| blockmean |
L\(_2\) (x,y,z) table data filter/decimator |
| blockmedian |
L\(_1\) (x,y,z) table data filter/decimator |
| blockmode |
Mode estimate (x,y,z) table data filter/decimator |
| filter1d |
Time domain filtering of 1-D data tables |
| grdfilter |
Filter 2-D gridded data sets in the space domain |
| |
Plotting of 1-D and 2-D Data |
| gmtlogo |
Plot the GMT logo on maps |
| grdcontour |
Contouring of 2-D gridded data sets |
| grdimage |
Produce images from 2-D gridded data sets |
| grdvector |
Plotting of 2-D gridded vector fields |
| grdview |
3-D perspective imaging of 2-D gridded data sets |
| 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 raster files on a map |
| pslegend |
Plot a legend on a map |
| psmask |
Create overlay to mask out regions on maps |
| psrose |
Plot sector or rose diagrams |
| psscale |
Plot gray scale or color scale on maps |
| psternary |
Plot data on ternary diagrams |
| pstext |
Plot text strings 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 |
| |
Gridding of Data Tables |
| greenspline |
Interpolation with Green’s functions for splines in 1--3 D |
| nearneighbor |
Nearest-neighbor gridding scheme |
| sphinterpolate |
Spherical gridding in tension of data on a sphere |
| surface |
A continuous curvature gridding algorithm |
| triangulate |
Perform optimal Delauney triangulation and gridding |
| |
Sampling of 1-D and 2-D Data |
| gmtsimplify |
Line reduction using the Douglas-Peucker algorithm |
| grdsample |
Resample a 2-D gridded data set onto a new grid |
| grdtrack |
Sample 2-D gridded data sets at specified (x,y) locations |
| sample1d |
Resampling of 1-D table data sets |
| |
Projection and Map-transformation |
| grdproject |
Project gridded data sets onto a new coordinate system |
| mapproject |
Transformation of coordinate systems for table data |
| project |
Project table data onto lines or great circles |
| |
Retrieve Information |
| gmtdefaults |
List the current default settings |
| gmtget |
Retrieve selected parameters in current file |
| gmtinfo |
Get information about table data files |
| gmtset |
Change selected parameters in current file |
| grdinfo |
Get information about grid files |
| |
Mathematical Operations on Tables or Grids |
| gmtmath |
Mathematical operations on table data |
| makecpt |
Make color palette tables |
| spectrum1d |
Compute various spectral estimates from time-series |
| sph2grd |
Compute grid from spherical harmonic coefficients |
| sphdistance |
Create grid of NN or distances to nearest points on a sphere |
| sphtriangulate |
Delaunay or Voronoi construction of spherical (lon,lat) data |
| |
Convert or Extract Subsets of Data |
| gmtconnect |
Connect segments into more complete lines or polygons |
| gmtconvert |
Convert data tables from one format to another |
| gmtselect |
Select subsets of table data based on multiple spatial criteria |
| gmtspatial |
Geospatial operations on lines and polygons |
| gmtvector |
Operations on Cartesian vectors in 2-D and 3-D |
| grd2rgb |
Convert Sun raster or grid file to red, green, blue component grids |
| grd2xyz |
Conversion from 2-D grid file to table data |
| grdblend |
Blend several partially over-lapping grid files onto one grid |
| grdconvert |
Converts grid files into other grid formats |
| grdcut |
Cut a sub-region from a grid file |
| grdpaste |
Paste together grid files along a common edge |
| splitxyz |
Split xyz files into several segments |
| xyz2grd |
Convert an equidistant table xyz file to a 2-D grid file |
| |
Determine Trends in 1-D and 2-D Data |
| fitcircle |
Finds the best-fitting great or small circle for a set of points |
| gmtregress |
Linear regression of 1-D data sets |
| grdtrack |
Sample 2-D gridded data sets at specified (x,y) locations |
| trend1d |
Fits polynomial or Fourier trends to \(y = f(x)\) series |
| trend2d |
Fits polynomial trends to \(z = f(x,y)\) series |
| |
Other Operations on 2-D Grids |
| grd2cpt |
Make color palette table from a grid files |
| grdclip |
Limit the z-range in gridded data sets |
| grdedit |
Modify header information in a 2-D grid file |
| grdfft |
Perform operations on grid files in the frequency domain |
| grdgradient |
Compute directional gradient from grid files |
| grdhisteq |
Histogram equalization for grid files |
| grdlandmask |
Create masking grid files from shoreline data base |
| grdmask |
Reset grid nodes in/outside a clip path to constants |
| grdmath |
Mathematical operations on grid files |
| grdvolume |
Calculate volumes under a surface within specified contour |
| |
Miscellaneous Tools |
| gmt2kml |
Like psxy but plots KML for use in Google Earth |
| kml2gmt |
Extracts coordinates from Google Earth KML files |
| psconvert |
Crop and convert PostScript files to raster images, EPS, and PDF |