GMT Online Man Pages

These man pages are html-versions of the Unix man pages for GMT. They are grouped by function.
For an alphabetical order, click here.

Thematic listing of GMT Unix man pages

• blockmean L2 (x,y,z) data filter/decimator
• blockmedian L1 (x,y,z) data filter/decimator
• 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 datar
• 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
• 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) ASCII 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 Project gridded data onto new coordinate system
• mapproject Transformation of coordinate systems
• project Project data onto lines/great circles

INFORMATION:

• gmtdefaults List the current default settings
• gmtset Edit parameters in the .gmtdefaults file
• grdinfo Get information about grd files
• minmax Report extreme values in ASCII datafiles

CONVERT OR EXTRACT SUBSETS OF DATA:

• grd2xyz Convert 2-D gridded data to ASCII table
• grdcut Cut a sub-region from a grd file
• grdpaste Paste together grdfiles along common edge
• grdreformat Convert from one grdformat to another
• splitxyz Split xyz files into several segments
• xyz2grd Convert ASCII table to 2-D grd file

MISCELLANEOUS:

• psmegaplot Create poster-size plots from postscript files
• makecpt Create GMT color palette tables
• spectrum1d Compute spectral estimates from time-series
• triangulate Perform optimal Delauney triangulation on xyz data

DETERMINE TRENDS IN 1-D AND 2-D DATA:

• fitcircle Finds best-fitting great or small circles
• grdtrend Fits polynomial trends to grdfiles (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 grdfile
• grdclip Limit the z-range in gridded data sets
• grdedit Modify grd header information
• grdfft Operate on grdfiles in frequency domain
• grdgradient Compute directional gradient from grdfiles
• grdhisteq Histogram equalization for grdfiles
• grdlandmask Creates mask grdfile from coastline database
• grdmask Set nodes outside a clip path to a constant
• grdmath Reverse Polish calculator for grdfiles

Alphabetical listing of GMT Unix man pages

1. blockmean
2. blockmedian
3. filter1d
4. fitcircle
5. gmtdefaults
6. gmtset
7. grd2cpt
8. grd2xyz
9. grdfilter
10. grdclip
11. grdcontour
12. grdcut
13. grdedit
14. grdfft
15. grdgradient
16. grdhisteq
17. grdimage
18. grdinfo
19. grdlandmask
20. grdmask
21. grdmath
22. grdpaste
23. grdproject
24. grdreformat
25. grdsample
26. grdtrack
27. grdtrend
28. grdvector
29. grdview
30. makecpt
31. mapproject
32. minmax
33. nearneighbor
34. psbasemap
35. psclip
36. pscoast
37. pscontour
38. pshistogram
39. pslib
40. psmask
41. psmegaplot
42. psrose
43. psscale
44. pstext
45. pswiggle
46. psxy
47. psxyz
48. sample1d
49. spectrum1d
50. splitxyz
51. surface
52. trend1d
53. trend2d
54. triangulate
55. xyz2grd
56. project
57. gmt

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