FILTERING OF 1-D AND 2-D DATA | |
blockmean | L2 estimate (x, y, z) data filters/decimators |
blocmedian | L1 estimate (x, y, z) data filters/decimators |
blockmode | Mode estimate (x, y, z) data filters/decimators |
filter1d | Filter 1-D data (time series) |
grdfilter | Filter 2-D data in space domain |
PLOTTING OF 1-D and 2-D DATA | |
grdcontour | Contouring of 2-D gridded data |
grdimage | Produce images from 2-D gridded data |
grdvector | Plot vector fields from 2-D gridded data |
grdview | 3-D perspective imaging of 2-D gridded data |
psbasemap | Create a basemap frame |
psclip | Use polygon files as clipping paths |
pscoast | Plot coastlines, filled continents, rivers, and political borders |
pscontour | Direct contouring or imaging of xyz data by triangulation |
pshistogram | Plot a histogram |
psimage | Plot Sun rasterfiles on a map |
psmask | Create overlay to mask specified regions of a map |
psrose | Plot sector or rose diagrams |
psscale | Plot grayscale or colorscale |
pstext | Plot textstrings |
pswiggle | Draw anomalies along track |
psxy | Plot symbols, polygons, and lines in 2-D |
psxyz | Plot symbols, polygons, and lines in 3-D |
GRIDDING OF (X,Y,Z) TABLE DATA | |
nearneighbor | Nearest-neighbor gridding scheme |
surface | Continuous curvature gridding algorithm |
triangulate | Perform optimal Delauney triangulation on xyz data |
SAMPLING OF 1-D AND 2-D DATA | |
grdsample | Resample a 2-D gridded data onto new grid |
grdtrack | Sampling of 2-D data along 1-D track |
sample1d | Resampling of 1-D data |
PROJECTION AND MAP-TRANSFORMATION | |
grdproject | Transform gridded data to a new coordinate system |
mapproject | Transform table data to a new coordinate system |
project | Project data onto lines or great circles |
INFORMATION | |
gmtdefaults | List the current default settings |
gmtset | Command-line editing of parameters in the .gmtdefaults file |
grdinfo | Get information about the content of gridded files |
minmax | Report extreme values in table data files |
MISCELLANEOUS | |
gmtmath | Reverse Polish Notation (RPN) calculator for table data |
makecpt | Create GMT color palette tables |
spectrum1d | Compute spectral estimates from time-series |
triangulate | Perform optimal Delauney triangulation on xyz data |
CONVERT OR EXTRACT SUBSETS OF DATA | |
gmtconvert | Convert table data from one format to another |
gmtselect | Select table data subsets based on multiple spatial criteria |
grd2xyz | Convert 2-D gridded data to table data |
grdcut | Cut a sub-region from a gridded file |
grdpaste | Paste together gridded files along common edge |
grdreformat | Convert from one grid format to another |
splitxyz | Split (x, y, z) table data into several segments |
xyz2grd | Convert table data to 2-D gridded file |
DETERMINE TRENDS IN 1-D AND 2-D DATA | |
fitcircle | Finds best-fitting great or small circles |
grdtrend | Fits polynomial trends to gridded files ( z = f(x, y)) |
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 gridded file |
grdclip | Limit the z-range in gridded data sets |
grdedit | Modify grid header information |
grdfft | Operate on gridded files in frequency domain |
grdgradient | Compute directional gradients from gridded files |
grdhisteq | Histogram equalization for gridded files |
grdlandmask | Creates mask gridded file from coastline database |
grdmask | Set grid nodes in/outside a clip path to constants |
grdmath | Reverse Polish Notation (RPN) calculator for gridded files |
grdvolume | Calculate volume under a surface within a contour |
STANDARDIZED COMMAND LINE OPTIONS | |
-B xtick[ :text:][ /ytick[ :text:]][ /ztick[ :text:]][ WESNZwesnz+][ :.title:] Tickmarks | |
– -H [n_headers] | ASCII tables have header record[s] |
– -J (upper case for width, lower case for scale) | Map projection (see below) |
–– -JA lon0/lat0/width | Lambert azimuthal equal area |
-JB lon0/lat0/lat1/lat2/width | Albers conic equal area |
-JC lon0/lat0/width | Cassini cylindrical |
-JD lon0/lat0/lat1/lat2/width | Equidistant conic |
-JE lon0/lat0/width | Azimuthal equidistant |
-JF lon0/lat0/horizon/width | Azimuthal Gnomonic |
-JG lon0/lat0/width | Azimuthal orthographic |
-JH lon0/width | Hammer equal area |
-JI lon0/width | Sinusoidal equal area |
-JJ lon0/width | Miller cylindrical |
-JKf lon0/width | Eckert IV equal area |
-JKs lon0/width | Eckert VI equal area |
-JL lon0/lat0/lat1/lat2/width | Lambert conic conformal |
-JMwidth or – -JM lon0/lat0/width | Mercator cylindrical |
-JN lon0/width | Robinson |
-JOa lon0/lat0/az/width | Oblique Mercator, 1: origin and azimuth |
-JOb lon0/lat0/lon1/lat1/width | Oblique Mercator, 2: two points |
-JOc lon0/lat0/lonp/latp/width | Oblique Mercator, 3: origin and pole |
-JPwidth | Polar (![]() |
-JQ lon0/width | Equidistant cylindrical (Plate Carrée) |
-JR lon0/width | Winkel Tripel |
-JS lon0/lat0/width | General stereographic |
-JT lon0/width | Transverse Mercator |
-JU zone/width | Universal Transverse Mercator (UTM) |
-JV lon0/width | Van der Grinten |
-JW lon0/width | Mollweide |
-JXwidth[ l| p][/height[ l| p]][ d] | Linear, log10, and xa-–yb (exponential) |
-JY lon0/lats/width | General cylindrical equal area |
-K | Append more PS later |
– -O | This is an overlay plot |
– -P | Select Portrait orientation |
-R west/east/south/north[ /zmin/zmax][ r] | Specify Region of interest |
– -U[ /dx/dy/][ label] | Plot time-stamp on plot |
– -V | Run in verbose mode |
– -X[ a] off | Shift plot origin in x-direction |
– -Y[ a] off | Shift plot origin in y-direction |
–– -c copies | Set number of plot copies [1] |
-: | Expect y/ x input rather than x/ y |