PlotSphericalHarmonicsTriangle

Plot the potential coefficients of a spherical harmonic expansion using the GMT Generic Mapping Tools (https://www.generic-mapping-tools.org). A variety of image file formats are supported (e.g. png, jpg, eps) determined by the extension of outputfile.

This program plots the formal errors (sigmas). If gravityfield provides no sigmas e.g. with setSigmasToZero in gravityfield:potentialCoefficients the coefficients itself are plotted instead.

The plot programs create a temporary directory in the path of outputfile, writes all needed data into it, generates a batch/shell script with the GMT commands, execute it, and remove the temporary directory. With setting options:removeFiles=false the last step is skipped and it is possible to adjust the plot manually to specific publication needs. Individual GMT settings are adjusted with options:options="FORMAT=value", see https://docs.generic-mapping-tools.org/latest/gmt.conf.html.

Name	Type	Annotation
outputfile	filename	*.png, *.jpg, *.eps, ...
title	string
gravityfield	gravityfield	use sigmas, if not given use signal (cnm,snm)
time	time	at this time the gravity field will be evaluated
minDegree	uint
maxDegree	uint
majorTickSpacing	double	boundary annotation
minorTickSpacing	double	frame tick spacing
gridLineSpacing	double	gridline spacing
gridLine	plotLine	The style of the grid lines.
colorbar	plotColorbar
options	sequence	further options...
width	double	in cm
height	double	in cm
titleFontSize	uint	in pt
marginTitle	double	between title and figure [cm]
drawGridOnTop	boolean	grid lines above all other lines/points
options	string
transparent	boolean	make background transparent
dpi	uint	use this resolution when rasterizing postscript file
removeFiles	boolean	remove .gmt and script files