GMT summary

The following is a summary of all the programs supplied with GMT and a very short description of their purpose. For more details, see the individual UNIX manual pages or the online web documentation. For a listing sorted by program purpose, see Section 3.2.

blockmean  		 L2 (x,y,z) table data filter/decimator 
blockmedian  		 L1 (x,y,z) table data filter/decimator 
blockmode  		 Mode estimate (x,y,z) table data filter/decimator 
filter1d  		 Filter 1-D table data sets (time series) 
fitcircle  		 Finds the best-fitting great or small circle for a set of points 
gmtconvert  		 Convert data tables from one format to another 
gmtdefaults  		 List the current default settings 
gmtmath  		 Mathematical operations on table data 
gmtselect  		 Select subsets of table data based on multiple spatial criteria 
gmtset  		 Change selected parameters in current .gmtdefaults file 
grd2cpt  		 Generate a GMT color palette table from a gridded file 
grd2xyz  		 Conversion from 2-D gridded file to table data 
grdclip  		 Limit the z-range in gridded data sets 
grdcontour  		 Contouring of 2-D gridded data sets 
grdcut  		 Cut a sub-region from a gridded file 
grdedit  		 Modify header information in a 2-D gridded file 
grdfft  		 Perform operations on gridded files in the frequency domain 
grdfilter  		 Filter 2-D gridded data sets in the space domain 
grdgradient  		 Compute directional gradient from gridded files 
grdhisteq  		 Histogram equalization for gridded files 
grdimage  		 Produce images from 2-D gridded data sets 
grdinfo  		 Get information about gridded files 
grdlandmask  		 Create masking gridded files from shoreline data base 
grdmask  		 Reset grid nodes in/outside a clip path to constants 
grdmath  		 Mathematical operations on gridded files 
grdpaste  		 Paste together gridded files along a common edge 
grdproject  		 Project gridded data sets onto a new coordinate system 
grdreformat  		 Converts gridded files into other grid formats 
grdsample  		 Resample a 2-D gridded data set onto a new grid 
grdtrack  		 Sampling of 2-D gridded data set along 1-D track 
grdtrend  		 Fits polynomial trends to gridded files 
grdvector  		 Plotting of 2-D gridded vector fields 
grdview  		 3-D perspective imaging of 2-D gridded data sets 
grdvolume  		 Calculate volumes under a surface within specified contour 
makecpt  		 Make GMT color palette tables 
mapproject  		 Transformation of coordinate systems for table data 
minmax  		 Report extreme values in table data files 
nearneighbor  		 Nearest-neighbor gridding scheme 
project  		 Project table data onto lines or great circles 
psbasemap  		 Create a basemap plot 
psclip  		 Use polygon files to define clipping paths 
pscoast  		 Plot [and fill] coastlines, borders, and rivers on maps 
pscontour  		 Contour or image raw table data by triangulation 
pshistogram  		 Plot a histogram 
psimage  		 Plot Sun rasterfiles on a map 
psmask  		 Create overlay to mask out regions on maps 
psrose  		 Plot sector or rose diagrams 
psscale  		 Plot grayscale or colorscale on maps 
pstext  		 Plot textstrings on maps 
pswiggle  		 Draw table data time-series along track on maps 
psxy  		 Plot symbols, polygons, and lines on maps 
psxyz  		 Plot symbols, polygons, and lines in 3-D 
sample1d  		 Resampling of 1-D table data sets 
spectrum1d  		 Compute various spectral estimates from time-series 
splitxyz  		 Split xyz files into several segments 
surface  		 A continuous curvature gridding algorithm 
trend1d  		 Fits polynomial or Fourier trends to y = f(x) series 
trend2d  		 Fits polynomial trends to z = f(x,y) series 
triangulate  		 Perform optimal Delauney triangulation and gridding 
xyz2grd  		 Convert an equidistant table xyz file to a 2-D gridded file