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problem() objects.
This new default portfolio – which can be manually specified using
add_default_portfolio() – involves simply generating a
single solution. The reason why this new default portfolio method was
chosen was because planning problems that contain insufficient data
(e.g., feature and cost data) to identify meaningful priorities can
sometimes result in solutions containing strange spatial artifacts
(e.g., lines or bands of selected planning units, see #205 and #268).
Since the presence of these spatial artifacts can indicate an
under-specified problem and shuffling optimization problems can suppress
them, we have decided to update the default portfolio so that it does
not shuffle problems. If users wish to prevent spatial artifacts from
appearing in solutions, then spatial penalties (e.g.,
add_boundary_penalties()), spatial constraints (e.g.,
add_neighbor_constraints()), or shuffle portfolios (e.g.,
add_shuffle_portfolio(number_solutions = 1)) can be
used.add_default_portfolio() function for specifying the
default behavior for generating a solution (see Notice above for further
details).solve() so that it provides information on the
optimality of solutions (#323). For example, you might specify a 10%
optimality gap for the optimization process (e.g., using
add_highs_solver(gap = 0.1)), and this might produce a
solution that is at least 7% from optimality. The resulting output from
solve() will now provide this information about the
solution (i.e., the 7% from optimality), and can be accessed using the
gap attribute (e.g., attr(x, "gap"), where
x is the output from solve()). Note that this
information is currently only available when using the Gurobi or HiGHS
solvers.add_linear_constraints() and
add_linear_penalties() that resulted in an incorrect error
message being shown (#324).add_shuffle_portfolio() that prevented
solvers from using a pre-specified starting solution (per the
start parameter) correctly. Please note that this bug did
not result in incorrect solutions, it only meant that any pre-specified
starting solutions were not used properly.add_cplex_solver() that caused solutions to
not provide runtime information for the optimization process.add_shuffle_portfolio() so that optimization
problems are randomly shuffled when a single solution is requested. This
update should help prevent “strange” solutions that contain long
horizontal lines/bands of planning units (#205, #268).add_contiguity_constraints() and
add_feature_contiguity_constraints() to be compatible with
updates to the igraph package.write_problem() so that it can use the
gurobi package to write problems (if desired). This
substantially reduces run time, because writing problems using the
Rsymphony packages also requires solving them.presolve_check() to throw warning if a problem
has a single feature (#309). Thanks to Sandra Neubert (@sandra-neubert)
for code contribution.print() and summary() for
problem() objects so that all text is printed at once
(rather than sequentially).write_problem() so that it works as expected
(#312).problem(),
add_linear_constraints(),
add_linear_penalties(),
add_locked_in_constraints(),
add_locked_out_constraints(),
adjacency_matrix(), binary_stack(),
category_layer(),
connectivity_matrix(),fast_extract(),
intersecting_units(), proximity_matrix(),
rij_matrix(), simulate_data(),
simulate_species(), simulate_cost(), and
zones() and other functions so that they will throw an
error if a categorical terra::rast() object is provided as
an argument (#313). This is because categorical rasters are not
supported. Thanks to Martin Jung (@Martin-Jung) for bug report.problem() not throwing multiple warnings
with unusual data (e.g., given cost and feature data with negative
values, previously only a single warning about negative costs would be
thrown). Thanks to Sandra Neubert (@sandra-neubert) for bug report.problem() to be more memory efficient when using
a sparse matrix (dgCMatrix) argument for the
rij_matrix parameter.Caused by error instead of
Caused by NULL.add_locked_in_constraints() and
add_locked_in_constraints() error messages when supplying
locked_in and locked_out objects that do not
spatially intersect with the planning units.scales::rescale() to
rescale such data. However, we now realize that this approach can
produce inconsistencies for boundary length data (e.g., the total
perimeter of a planning unit might not necessarily equal the sum of the
edge lengths). In some cases, these inconsistencies can cause solutions
generated with high boundary penalties (i.e., using
add_boundary_penalties() with a high penalty
value) to contain a large reserve (i.e., a spatial cluster of selected
of planning units) with a single unselected planning unit in the middle
of the reserve. In the the worst case, these inconsistencies produce a
situation where increasing boundary penalties (i.e., generating multiple
solutions with add_boundary_penalties() and increasing
penalty values) does not alter the spatial configuration of
solutions. Although use of scales::rescale() did not
produce such behavior prior to version 8.0.0, changes to the output
format for boundary_matrix() in subsequent versions now
mean that scales::rescale() can cause these issues. We now
recommend using the new rescale_matrix() function to
rescale boundary length data to avoid numerical issues, whilst also
avoid such inconsistencies.rescale_matrix() function to help with rescaling
boundary length (e.g., generated using boundary_matrix())
and connectivity (e.g., generated using
connectivity_matrix()) data so avoid numerical issues
during optimization (#297). Thanks to Jason Flower (@jflowernet) and
Joan Giménez Verdugo for bug reports.print() and summary() methods
for problem() objects so that they will now better describe
situations when the planning cost data all contain a constant value
(e.g., all costs equal to 1).rescale_matrix() function instead of the
scales::rescale() function for rescaling boundary length
and connectivity data (#297).add_neighbors_constraints() so that it has an
additional clamp argument so the minimum number of
neighbors permitted for each planning unit in the solution is clamped to
the number of neighbors that each planning unit has. For example, if a
planning unit has 2 neighbors, k = 3, and
clamp = FALSE, then the planning unit could not ever be
selected in the solution. However, if clamp = TRUE, then
the planning unit could potentially be selected in the solution if both
of its 2 neighbors were also selected.problem() that prevents
features being supplied as a data.frame that
contains feature names stored as a factor (#295). Thanks to
Carl Boetigger (@cboettig) for bug report.problem() so that it will throw a meaningful
error message if the user accidentally specifies the geometry column for
sf planning unit data as a feature.rij_matrix() so that it works when none of the
raster layers being processed fit into memory (#290). Thanks to Edwards
Marc (@edwardsmarc) for bug report.get_sim_pu_raster(),
get_sim_locked_in_raster(),
get_sim_locked_out_raster(),
get_sim_zones_pu_raster(), get_sim_features(),
get_sim_zones_features()).add_manual_locked_constraints() and
add_manual_bounded_constraints() so that the indices in the
specified in the argument data$pu should consistently refer
to the total units. In other words, the indices in data$pu
should refer to the row numbers (for planning units in sf
or data.frame format) or cell numbers (for planning units
in Raster or SpatRaster format) of the
planning units that should be locked.solve.ConservationProblem() so that it can be
called directly (#283). Thanks to Tin Buenafe (@SnBuenafe) for bug
report.problem() so that an error will be thrown if
argument to features contains only missing
(NA) values (e.g., an sf object is supplied that
has NA values in all rows for a feature’s column).raster::stack() and
sp::SpatialPolyonsDataFrame()) are still supported, the
prioritizr package will now throw deprecation warnings. Since
support for the sp and raster package classes will be
fully deprecated and removed in a later version this year, we recommend
updating code to use the sf and terra packages.problem() objects can now contain many more constraints and
penalties. Note that any problem() objects that were
produced using earlier versions of the package are no longer compatible.
Thanks to Jason Flower (@jflowernet) for bug report on memory
issues.library(sf)).get_sim_pu_raster(),
get_sim_pu_polygons(), get_sim_pu_lines(),
get_sim_pu_points(),,
get_sim_locked_in_raster(),
get_sim_locked_out_raster(),
get_sim_zones_pu_raster(),
get_sim_zones_pu_polygons(),
get_sim_phylogeny(), get_sim_features(),
get_sim_zones_features()). These functions now return
sf::st_sf(), terra::rast(),
ape::read.tree() and zones() objects. Note
that these functions are provided because data(...) cannot
be used with terra::rast() objects. See ?data
for more information.boundary_matrix() output format has been updated.
This means that users will not be able to use boundary data generated
using previous versions of the package.add_lpsymphony_solver() now throws an error,
instead of a warning, if an old version of the lpsymphony
package is installed that is known to produce incorrect results.marxan_boundary_data_to_matrix() function is no
longer compatible with boundary data for multiple zones.distribute_load() function has been deprecated,
because it is no longer used. For equivalent functionality, See
parallel::splitIndices().new_optimization_problem() and
predefined_optimization_problem() functions have been
superseded by the new optimization_problem() function.is.Waiver(),
add_default_decisions() new_id(),
is.Id(), print.Id(),
pproto()."bad error message"!print() function for problem(),
optimization_problem(), and zones() objects
has been updated to provide more information.summary() function to provide extensive detail on
problem() objects.add_feature_weights() when applied to
problems with an add_max_phylo_div_objective() or
add_max_phylo_end_objectve(). Specifically, the bug meant
that weights weren’t being applied to problems with these particular
objectives.add_gurobi_solver() documentation
for opening vignette.add_extra_portfolio()) default to generating 10
solutions.solve() function will now output
tibble::tibble() objects (instead of
data.frame() objects), when the planning unit data are
tibble::tibble() objects.boundary_matrix() function now uses
terra::sharedPaths() for calculations, providing greater
performance (#257). Thanks to Jason Flower (@jflowernet) for bug
report.eval_ferrier_importance() function can now be used
with any objective function that uses targets and a single zone.add_shuffle_portfolio() and
eval_replacement_importance() functions.add_highs_solver() function for the HiGHS
optimization software (#250).add_default_solver() to use the HiGHS solver if
the Gurobi, IBM CPLEX, and CBC solvers aren’t available.add_default_solver() so that the
add_lpsymphony_solver() is used instead of
add_rsymphony_solver().problem() and
eval_feature_representation_summary() to avoid needlessly
converting sparse matrices to regular matrices (#252).NEWS.md.boundary_matrix() to use STR query trees by
default.simulate_data(), simulate_cost()
and simulate_species() functions to improve performance
using the fields package.add_cbc_solver() to throw a
segfault when solving a problem wherein the rij_matrix(x)
has a zero amount for the last feature in the last planning unit (#247).
Thanks to Jason Everett (@jaseeverett) for bug report.boundary_matrix() to use the
geos package (#218).simulate_cost() and
simulate_species() so that they no longer depend on the
RandomFields package. Note that these functions will now
produce different outputs from previous versions (even when controlling
for the random number generator state).presolve_check() function to (i) reduce
chances of it incorrectly throwing an error when the input data won’t
actually cause any issues, and (ii) provide recommendations for
addressing issues.add_min_largest_shortfall_objective() so that examples
complete in a shorter period of time.x that are
numeric or matrix format, (ii) x
that contain missing (NA) values, and (iii)
rij_matrix that are in dgCMatrix format. This
bug only occurred when all three of these specific conditions were met.
When it occurred, the bug caused planning units with NA
cost values to receive very high cost values (e.g., 1e+300). This bug
meant that when attempting to solve the problem, the presolve checks
(per presolve_check()) would throw an error complaining
about very high cost values (#236). Thanks to @lmathon for bug
report.add_connectivity_penalties() function and
documentation so that it is designed specifically for symmetric
connectivity data.add_asym_connectivity_penalties() function that is
designed specifically for asymmetric connectivity data. This function
has been created to help ensure that asymmetric connectivity data are
handled correctly. For instance, using asymmetric connectivity data with
add_connectivity_penalties() function in previous versions
of the package sometimes resulted in the data being incorrectly treated
as symmetric data. Additionally, this function uses an updated
mathematical formulation for handling asymmetric connectivity so that it
provides similar results to the Marxan software (#223). Thanks
to Nina Faure Beaulieu (@ninzyfb) for bug report.add_locked_in_constraints() and
add_locked_out_constraints() to ensure that a meaningful
error message is provided when no planing units are locked (#234).
Thanks to Alec Nelson (@AlecNelson) for bug report.presolve_check() so that it does not throw a
meaningless warning when the mathematical objective function only
contains zeros.presolve_check() to help reduce chances of
mis-attributing high connectivity/boundary values due to planning unit
costs.marxan_problem() function so that it can be used
with asymmetric connectivity data. This is now possible because there
are dedicated functions for symmetric and asymmetric connectivity.zones parameter of the
add_connectivity_penalties() function.eval_ferrier_importance()
(#220). Although this function is now recommended for general use, the
documentation contained an outdated warning and so the warning has now
been removed.eval_n_summary() function now
returns a table with the column name "n" (instead of
"cost") for the number of selected planning units
(#219).marxan_problem() for importing Marxan data
files.sim_pu_sf and
sim_pu_zones_sf data given class updates to the sf
package (compatible with version 1.0.3+).write_problem() function.eval_ferrier_importance() function with verified
code.presolve_check() function to throw warning when
really high values specified in
add_neighbor_constraints().Update add_cbc_solver() function so that it can use a
starting solution to reduce run time (via the
start_solution parameter).
add_linear_constraint() function to add arbitrary
constraints.add_min_shortfall_objective() and
add_min_largest_shortfall_objective() functions to handle
targets with a target threshold value of zero.eval_connectivity_summary() function, and tweaking the
header in the README.problem()
function.add_gurobi_solver() function so that it doesn’t
print excess debugging information (accidentally introduced in previous
version 7.0.1.1).add_gurobi_solver() function to support the
node_file_start parameter for the Gurobi software. This
functionality is useful solving large problems on systems with limited
memory (#192). Thanks to @negira and Alec Nelson (@AlecNelson) for bug
reports and suggestions.write_problem() function to save the mixed integer
programming representation of a conservation planning problem to a file.
This function is useful for manually executing optimization
solvers.rij_matrix() function documentation
(#189).add_gurobi_solver() function to allow
specification of a starting solution (#187). This functionality is
useful for conducting a boundary penalty parameter calibration exercise.
Specifically, users can specify the starting solution for a given
penalty value based on the solution obtained using a smaller penalty
value.solve() so it assigns layer names based on zone
names for solutions in raster format.add_cbc_solver() so that time_limit
and verbose parameters work as expected.add_gurobi_solver() function to report timings
following the same methods as the other solvers.add_lpsymphony_solver() function to be more
memory efficient (#183).add_default_solver() so that
add_cbc_solver() is now preferred over all other open
source solvers.add_cbc_solver() that resulted in incorrect
solutions to problems with equality constraints.add_cbc_solver() function to generate solutions
using the open source CBC solver via the rcbc package
(https://github.com/dirkschumacher/rcbc).add_rsymphony_solver() and
add_lpsymphony_solver() functions to have a default
time_limit argument set as the maximum machine integer for
consistency.add_rsymphony_solver(),
add_lpsymphony_solver(), and
add_gurobi_solver() functions to require
logical (TRUE/FALSE) arguments
for the first_feasible parameter.add_default_solver() function so that it prefers
add_lpsymphony_solver() over
add_rsymphony_solver(), and add_cbc_solver()
over all open source solvers.gap
parameter for the add_rsymphony_solver() and
add_lpsymphony_solver() corresponded to the maximum
absolute difference from the optimal objective value. This was an error
due to misunderstanding the SYMPHONY documentation. Under
previous versions of the package, the gap parameter
actually corresponded to a relative optimality gap expressed as a
percentage (such thatgap = 10 indicates that solutions must
be at least 10% from optimality). We have now fixed this error and the
documentation described for the gap parameter is correct.
We apologize for any inconvenience this may have caused.add_min_largest_shortfall() objective
function.solution
arguments are supplied to the evaluation functions (#176). Thanks to
Phil Dyer (@PhDyellow) for bug report.sf planning unit data.eval_) to
mention that the argument to solution should only contain
columns that correspond to the solution (#176). Thanks to Phil Dyer
(@PhDyellow) for bug report.sf data to documentation for
importance evaluation functions (#176).add_manual_targets()
documentation.eval_cost() function to calculate the cost of a
solution.eval_boundary() function to calculate the exposed
boundary length associated with a solution.eval_connectivity() function to calculate the
connectivity associated with a solution.eval_feature_representation() function to assess
how well each feature is represented by a solution. This function is
similar to the deprecated eval_feature_representation()
function, except that it follows conventions for other evaluation
functions (e.g. eval_cost).eval_target_representation() function to assess how
well each target is met by a solution. This function is similar to the
eval_feature_representation(), except that it corresponds
to the targets in a conservation planning problem.ferrier_score function as
eval_ferrier_importance() function for consistency.replacement_cost function as
eval_replacement_importance() function for
consistency.rarity_weighted_richness function as
eval_rare_richness_importance() function for
consistency.feature_representation() function. It is now
superseded by the eval_feature_representation()
function.add_locked_out_constraints() function to enable a
single planning unit from being locked out of multiple zones (when data
are specified in raster format).problem() function to reduce memory consumption
for sparse matrix arguments (#164).add_cplex_solver() function to generate solutions
using IBM
CPLEX (via the cplexAPI package).add_loglinear_targets() and
loglinear_interpolation() functions. Previously they used a
natural logarithm for log-linear interpolation. To follow target setting
approaches outlined by Rodrigues et al. (2004), they now use the decadic
logarithm (i.e. log10()).add_gap_portfolio() documentation to note that
it only works for problems with binary decisions (#159). Thanks to
@kkemink for report.ferrier_score() function. It
no longer incorrectly states that these scores can be calculated using
CLUZ and now states that this functionality is experimental until the
formulation can be double checked.--run-donttest).feature_representation() bug incorrectly throwing
error with vector planning unit data (e.g. sf-class
data).rij_matrix() to throw an error for
large raster data (#151).add_linear_penalties() to add penalties that
penalize planning units according to a linear metric.connectivity_matrix() documentation to provide
an example of how to generate connectivity matrices that account for
functional connectivity.solve() function.solve() function
to the Salt Spring Island and Tasmania vignettes.compile() to throw warning when compiling
problems that include feature weights and an objective function that
does not use feature weights.add_gurobi_solver() function to provide more
options for controlling the pre-solve step when solving a problem.ferrier_score() function to compute
irreplaceability scores following Ferrier et al (2000).proximity_matrix() function to generate matrices
indicating which planning units are within a certain distance of each
other (#6).add_extra_portfolio(),
add_top_portfolio(), add_gap_portfolio()
functions to provide specific options for generating portfolios
(#134).connected_matrix() function to
adjacency_matrix() function to follow the naming
conventions of other spatial association functions (#6).set_number_of_threads(),
get_number_of_threads(), and is.parallel()
functions since they are no longer used with new data extraction
methods.add_pool_portfolio() function because the new
add_extra_portfolio() and add_top_portfolio()
functions provide this functionality (#134).intersecting_units and
fast_extract functions to use the exactextractr
and fasterize packages to speed up raster data extraction
(#130).boundary_matrix() function when handling
SpatialPolygon planning unit data that contain multiple
polygons (e.g. a single planning unit contains to two separate islands)
(#132).add_rsymphony_solver() and
add_lpsymphony_solver() throwing an an infeasible error
message for feasible problems containing continuous or semi-continuous
variables.presolve_check() function more
informative (#124). Thanks to Amanda Liczner (@aliczner) for bug
report.rij_matrix() so that amounts are calculated
correctly for vector-based planning unit data.fast_extract().add_locked_in_constraints() and
add_locked_out_constraints() functions so that they no
longer throw an unnecessary warning when when they are added to
multi-zone problems using raster data with NA values.add_locked_in_constraints()
and add_locked_out_constraints() functions to provide
recommended practices for raster data.rarity_weighted_richness() returning
incorrect scores when the feature data contains one feature that has
zeros amounts in all planning units (e.g. the tas_features
object in the prioritizrdata package; #120).add_gurobi_solver() returning solution
statuses that are slightly larger than one (e.g. 1+1.0e-10) when solving
problems with proportion-type decisions (#118). Thanks to Martin Jung
(@Martin-Jung) for bug report.add_manual_bounded_constraints() function to apply
lower and upper bounds on planning units statuses in a solution (#118).
Thanks to Martin Jung (@Martin-Jung) for suggestion.replacement_cost() function to use parallel
processing to speed up calculations (#119).add_gurobi_solver(),
add_lpsymphony_solver(), and
add_rsymphony_solver() functions so that they will not
return solutions with values less than zero or greater than one when
solving problems with proportion-type decisions. This issue is the
result of inconsistent precision when performing floating point
arithmetic (#117). Thanks to Martin Jung (@Martin-Jung) for bug
report.add_locked_in_constraints() and
add_locked_out_constraints() functions to provide a more
helpful error message the locked_in/locked_out
argument refers to a column with data that are not logical (i.e.
TRUE/FALSE; #118). Thanks to Martin Jung
(@Martin-Jung) for bug report.solve() function to throw a more accurate and
helpful error message when no solutions are found (e.g. due to problem
infeasibility or solver time limits).add_max_phylo_objective() function to
add_max_phylo_div_objective().add_max_phylo_end_objective() function to maximize
the phylogenetic endemism of species adequately represented in a
prioritization (#113). Thanks to @FerreiraPSM for suggestion.sim_phylogeny).add_max_phylo_end_objective(),
replacement_cost(), and
rarity_weighted_richness() functions to the Prioritizr
vignette.add_max_phylo_div_objective()
function.replacement_cost() function to calculate
irreproducibility scores for each planning unit in a solution using the
replacement cost method (#26).rarity_weighted_richness() function to calculate
irreproducibility scores for each planning unit in a solution using
rarity weighted richness scores (#26).irreplaceability manual entry to document functions
for calculating irreproducibility scores.add_min_shortfall_objective() function to find
solutions that minimize target shortfalls.problem() tests so that they work when no solvers
are installed.add_min_shortfall_objective() function to main
vignette.feature_representation() function now requires
missing (NA) values for planning unit statuses in a
solution for planning units that have missing (NA) cost
data.presolve_check() function to investigate potential
sources of numerical instability before trying to solve a problem. The
manual entry for this function discusses common sources of numerical
instability and approaches for fixing them.solve() function will now use the
presolve_check() function to verify that problems do not
have obvious sources of numerical instability before trying to solve
them. If a problem is likely to have numerical instability issues then
this function will now throw an error (unless the
solve(x, force = TRUE)).add_rsymphony_solver() function now uses sparse
matrix formats so that attempts can be made to solve large problems with
SYMPHONY—though it is unlikely that SYMPHONY will be able to
solve such problems in a feasible period of time.tibble::as.tibble() instead of
tibble::as_tibble().solve() (#110). Thanks to Martin
Jung (@Martin-Jung) for suggestion.add_boundary_penalties()
and add_connectivity_penalties() function (#106).add_rsymphony_solver() and
add_lpsymphony_solver() sometimes returned infeasible
solutions when subjected to a time limit (#105). Thanks to @magalicombes
for bug report.ConservationProblem-class objects. These
methods were implemented to be used in future interactive applications
and are not currently used in the package. As a consequence, these bugs
do not affect the correctness of any results.bad error message error being thrown when input
rasters are not comparable (i.e. same coordinate reference system,
extent, resolutions, and dimensionality) (#104). Thanks to @faengl for
bug report.solve() printing annoying text about
tbl_df (#75). Thanks to Javier Fajardo (@javierfajnolla)
for bug report.add_max_features_objective() example code.add_neighbor_constraints() and
add_contiguity_constraints() functions used more memory
than they actually needed (#102). This is because the argument
validation code converted sparse matrix objects
(i.e. dgCMatrix) to base objects (i.e. matrix)
class temporarily. This bug only meant inefficient utilization of
computer resources—it did not affect the correctness of any
results.add_mandatory_allocation_constraints() function.
This function can be used to ensure that every planning unit is
allocated to a management zone in the solution. It is useful when
developing land-use plans where every single parcel of land must be
assigned to a specific land-use zone.$find(x) method for
Collection prototypes that caused it to throw an error
incorrectly. This method was not used in earlier versions of this
package.add_mandatory_allocation_constraints() to the
Management Zones and Prioritizr vignettes.feature_representation() function that
caused the “amount_held” column to have NA values instead of the correct
values. This bug only affected problems with multiple zones.category_layer() function that it this function to
incorrectly throw an error claiming that the input argument to
x was invalid when it was in fact valid. This bug is
encountered when different layers the argument to x have
non-NA values in different cells.add_contiguity_constraints() function now uses
sparse matrix formats internally for single-zone problems. This means
that the constraints can be applied to single-zoned problem with many
more planning units.add_connectivity_penalties() function now uses
sparse matrix formats internally for single-zone problems. This means
that connectivity penalties can be applied to single-zoned problem with
many more planning units.add_max_utility_objective() and
add_max_cover_objective() functions to make it clearer that
they do not use targets (#94).add_locked_in_constraints() and
add_locked_out_constraints() that incorrectly threw an
error when using logical locked data
(i.e. TRUE/FALSE) because it incorrectly
thought that valid inputs were invalid.add_locked_in_constraints(),
add_locked_out_constraints(), and
add_manual_locked_constraints() where solving the same
problem object twice resulted in incorrect planning units being locked
in or out of the solution (#92). Thanks to Javier Fajardo
(@javierfajnolla) for bug report.feature_abundances() that caused the solve
function to throw an error when attempting to solve problems with a
single feature.add_cuts_portfolio() that caused the
portfolio to return solutions that were not within the specified
optimality gap when using the Gurobi solver.add_pool_portfolio() function.feature_representation() function now allows
numeric solutions with attributes (e.g. when output by the
solve() function) when calculating representation
statistics for problems with numeric planning unit data
(#91). Thanks to Javier Fajardo (@javierfajnolla) for bug report.add_manual_targets() function threw a warning when
some features had targets equal to zero. This resulted in an excessive
amount of warnings. Now, warnings are thrown for targets that are less
then zero.problem() function sometimes incorrectly threw a
warning that feature data had negative values when the data actually did
not contain negative values. This has now been addressed.problem function now allows negative values in the
cost and feature data (and throws a warning if such data are
detected).add_absolute_targets() and
add_manual_targets() functions now allow negative targets
(but throw a warning if such targets are specified).compile function throws an error if a problem is
compiled using the expanded formulation with negative feature data.add_absolute_targets() function now throws an
warning—instead of an error—if the specified targets are greater than
the feature abundances in planning units to accommodate negative values
in feature data.add_max_cover_objective() in prioritizr
vignette (#90).add_loglinear_targets() function now includes a
feature_abundances() parameter for specifying the total
amount of each feature to use when calculating the targets (#89). Thanks
to Liz Law (@lizlaw) for suggestion.add_relative_targets() documentation now makes it
clear that locked out planning units are included in the calculations
for setting targets (#89).feature_abundances() function to calculate the
total amount of each feature in the planning units (#86). Thanks to
Javier Fajardo (@javierfajnolla) for suggestion.add_cuts_portfolio() function uses the
Gurobi solution pool to generate unique solutions within a
specified gap of optimality when tasked with solving problems with
Gurobi (version 8.0.0+) (#80).add_pool_portfolio() function to generate a
portfolio of solutions using the Gurobi solution pool
(#77).boundary_matrix() function now has the experimental
functionality to use GEOS STR trees to speed up processing (#74).feature_representation() function to how well
features are represented in solutions (#73).solve() function printing
superfluous text (#75).problem() function.sim_pu_zones_stack,
sim_pu_zones_polygons, and sim_features_zones
for exploring conservation problems with multiple management zones.zones function and Zones class to
organize data with multiple zones.add_manual_targets() function for creating targets
that pertain to multiple management zones.add_manual_locked_constraints() function to
manually specify which planning units should or shouldn’t be allocated
to specific zones in solutions.binary_stack(), category_layer(), and
category_vector() functions have been provided to help work
with data for multiple management zones.problem() function now accepts Zone
objects as arguments for feature to create problems with
multiple zones.add_relative_targets() and
add_absolute_targets() functions for adding targets to
problems can be used to specify targets for each feature in each
zone.solve() function now returns a list of
solutions when generating a portfolio of solutions.zones parameter) and specify how
they they should be applied (using the data parameter. All
of these functions have default arguments that mean that problems with a
single zone should have the same optimal solution as problems created in
the earlier version of the package.add_locked_in_constraints() and
add_locked_out_constraints() functions for specifying which
planning units are locked in or out now accept matrix
arguments for specifying which zones are locked in or out.add_feature_weights() function can be used to
weight different the representation of each feature in each zone.?prioritizr), and README.marxan_problem() has been updated with more
comprehensive documentation and to provide more helpful error messages.
For clarity, it will now only work with tabular data in the standard
Marxan format.add_boundary_penalties()
(#62). Thanks to Liz Law (@lizlaw) for report.add_locked_in_constraints() and
add_locked_out_constraints() throw an exception when used
with semi-continuous-type decisions (#59).compile() thrown when the same
planning unit is locked in and locked out now prints the planning unit
indices in a readable format.add_locked_in_constraints() and
add_locked_out_constraints() are ignored when using
proportion-type decisions (#58).predefined_optimization_problem() which
incorrectly recognized some inputs as invalid when they were in fact
valid.R CMD check related to proto
package in Depends.add_lpsymphony_solver() to throw warnings to
alert users to potentially incorrect solutions (partially addressing
#40).add_*_objectives now pass when executed
with slow solvers (partially addressing #40).compile() to work when no solvers are installed
(#41).add_*_solvers are now unbounded and
can accept values larger than 1 (#44).add_max_cover_objective() function has been renamed
to the add_max_utility_objective(), because the formulation
does not follow the historical formulation of the maximum coverage
reserve selection problem (#38).add_max_cover_objective() function now follows the
historical maximum coverage objective. This fundamentally changes
add_max_cover_objective() function and breaks compatibility
with previous versions (#38).add_lpsymphony_solver() examples and tests to
skip on Linux operating systems.add_lpsymphony_solver() causing error when
attempting to solve problems.numeric vector data
that caused an error.numeric vector input
with rij data containing NA values.cran-comments.md
file.apply_boundary_penalties() and
add_connectivity_penalties() causing the function to throw
an error when the number of boundaries/edges is less than the number of
planning units.boundary_matrix() calculations (#30).ScalarParameter and
ArrayParameter prototypes to check that functions for
generating widgets have their dependencies installed.numeric planning unit data and portfolios
that caused the solve() to throw an error.add_max_phylo_objective()
(#24).Spatial*DataFrame input to
marxan_problem() would always use the first column in the
attribute table for the cost data. This bug is serious
so analysis that used Spatial*DataFrame inputs in
marxan_problem() should be rerun.problem() objects.add_cuts_portfolio() on Travis.add_cuts_portfolio() and
add_shuffle_portfolio() tests on CRAN.data.frame and Spatial*DataFrame
objects are now stored in columns named “solution_*” (e.g. “solution_1”)
to store multiple solutions.README.Rmd for examples on
accessing this information.verbose argument to all solvers. This
replaces the verbosityadd_lpsymphony_solver() and
add_rsymphony_solver() is reduced.add_gurobi_solver.R,
add_lpsymphony_solver.R,
add_rsymphony_solver.R, and solvers.R.
argument in add_lpsymphony_solver() and
add_rsymphony_solver().ConservationProblem$print() now only prints the first
three species names and a count of the total number of features. This
update means that ConservationProblem objects with lots of
features can now safely be printed without polluting the R console.time_limit.marxan_problem() to work with absolute file
paths and the INPUTDIR in Marxan input files (#19). Thanks
to Dan Rosauer (@DanRosauer) for bug report.solve() when the rij data does not contain
the highest planning unit identifier specified when building the
problem() (#20).devtools::build_vignettes(). Earlier versions needed the
vignettes to be compiled using the Makefile to copy files
around to avoid tangled R code causing failures during R CMD CHECK.
Although no longer needed, the vignettes can still be compiled using the
shell command make vigns if desired.README.Rmd now lives in the top-level directory
following standard practices. It should now be complied using
rmarkdown::render("README.Rmd") or using the shell command
make readme. Note that the figures for
README.md can be found in the directory
man/figures.prshiny will now only be run if
executed during an interactive R session. Prior to this R CMD CHECK
would hang.quick_start.Rmd showing how to
run marxan_problem() using input data.frame()
objects.quick_start.Rmd counting number of
selected planning unitsREADME.Rmd tweaks to make it look prettier on
website.compile()
function.problem.data.frame that meant that it did
not check for missing values in rij$pu.add_absolute_targets() and
add_relative_targets` related to their standardGeneric being incorrectly
definedadd_corridor_targets() when argument
connectivities is a list. The elements in the
list are assumed to be dsCMatrix objects (aka symmetric
sparse matrices in a compressed format) and are coerced to
dgCMatrix objects to reduce computational burden. There was
a typo, however, and so the objects were coerced to
dgCmatrix and not dgCMatrix. This evidently
was ok in earlier versions of the RcppArmadillo and/or
Matrix packages but not in the most recent versions.problem() causing node stack overflows
(#21). Thanks to Dan Rosauer () for bug report.parallel::detectCores() returns
NA on some systems preventing users from using the Gurobi
solver–even when one thread is specified.structure(NULL, ...) with
structure(list(), ...).new_waiver().add_default_objectives() and
add_default_targets() private functions.add_default_decisions() and
add_default_solver() to own help file.rij_matrix() duplicating feature data
(#13).add_corridor_constraints() that fails to
actually add the constraints with argument to connectivity
is a list.make install command so that it now actually
installs the package.These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.