# Methods for Calculating Gradient Surface Metrics

## Documentation for package ‘geodiv’ version 1.0.5

- DESCRIPTION file.
- User guides, package vignettes and other documentation.
- Package NEWS.

## Help Pages

.calculate_met_focal | Calculate Texture Metric for Single Pixel
.deg2rad | Degree to Radian Conversion
.maxdist | Estimate Maximum Correlation Length
.mindist | Estimate Minimum Correlation Length
.rad2deg | Radian to Degree Conversion
aacf | Estimate the Areal Autocorrelation Function
area_above | Area Above the Bearing Area Curve
bearing_area | Calculates the Rotated Bearing Area Curve
bestfitplane | Finds the Best Fit Polynomial Surface
fftshift | Fourier Transform Shift
findpeaks | Find Local Peaks
findvalleys | Find Local Valleys
find_flat | Finds the Flattest Part of the Bearing Area Curve
fitplane | Calculate a Least Squares Polynomial Surface
flatsa | Flattened Surface Area
focal_metrics | Calculate Texture Metrics per Pixel
height_ba | Value of the Bearing Area Curve at a Specified Value
normforest | NDVI errors for a portion of southwestern Oregon, USA.
orelevation | SRTM elevation for a portion of southwestern Oregon, USA.
orforest | NDVI for a portion of southwestern Oregon, USA.
pad_edges | Extend edges of a matrix.
plot_ba_curve | Plots the Bearing Area Curve
remove_plane | Removes the Best Fit Polynomial Surface
rotate | Rotates a matrix 180 degrees.
s10z | Ten-Point Height
sa | Calculates the Average Roughness of a Surface
sbi | Surface Bearing Index
sci | Core Fluid Retention Index
scl | Calculate Correlation Length
sdc | Height Intervals of the Bearing Area Curve
sdq | Root Mean Square Slope of Surface
sdq6 | Root Area Mean Square Slope of Surface
sdr | Surface Area Ratio
sds | Summit Density
sfd | Calculate the fractal dimension of a raster.
sfd_ | Calculate the fractal dimension of a raster (C function).
simpsons | Simpson's Rule Empirical Area Under a Curve
sk | Core Roughness Depth
sku | Calculates the Kurtosis of Raster Values
slopecalc | Determines the Slopes Along the Bearing Area Curve
slopemeans | Determines the Average Slope Along Larger Segments of the Bearing Area Curve
smean | Calculates the Mean Peak Height of a Surface Image
sph | Calculates the Maximum Peak Height of a Surface Image
spk | Reduced Peak Height
sq | Calculates the Root Mean Square Roughness of a Surface
srw | Radial Wavelength Metrics
ssc | Mean Summit Curvature
ssk | Calculates the Skewness of Raster Values
std | Texture Direction Metrics
stxr | Estimate Texture Aspect Ratio
surface_area | Surface Area
sv | Calculates the Maximum Valley Depth of a Surface Image
svi | Valley Fluid Retention Index
svk | Reduced Valley Depth
texture_image | Calculate Texture Metrics per Pixel
window_metric | Calculate Texture Metric for Single Pixel
zshift | Offset Raster or Matrix Values