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This R package is to facilitate Vegetation Imaging Spectroscopy
Analysis (VISA). For more details of this package, you can
browseVignettes("visa")
.
The very first version of visa (0.1.0) is on CRAN.
install.packages("visa")
You might encounter problem of package dependencies, such as some
functions depend on ggplot2
, ggpmisc
. In such
cases, you would have to install all the dependencies.
The current version on GitHub is v1.0.0.
if (!require("devtools")) install.packages("devtools")
::install_github("kang-yu/visa") devtools
library(visa)
data(NSpec.DF)
x <- NSpec.DF$N # nitrogen
S <- NSpec.DF$spectra[, seq(1, ncol(NSpec.DF$spectra), 10)] # resampled to 10 nm steps
cm.nsr(S, x, cm.plot = TRUE)
You can report your issues of using visa here. Don’t know how to report a bug? Check RStudio’s Instructions on Writing Good Bug Reports.
You might find useful information by checking the issues reported by others.
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.