# Manual pages

Scope: GMT.

[ Alias ↣ ] Name (section) | Brief |
---|---|

backtracker(1gmt) | Generate forward and backward flowlines and hotspot tracks. |

blockmean(1gmt) | Block average (x, y, z) data tables by L2 norm. |

blockmedian(1gmt) | Block average (x, y, z) data tables by L1 norm. |

blockmode(1gmt) | Block average (x, y, z) data tables by mode estimation. |

dimfilter(1gmt) | Directional filtering of 2-D gridded files in the space (or time) domain. |

filter1d(1gmt) | Do time domain filtering of 1-D data tables. |

fitcircle(1gmt) | Find mean position and pole of best-fit great [or small] circle to points on a sphere. |

gmt(1gmt) | The Generic Mapping Tools data processing and display software package. |

gmt.conf(5gmt) | Configuration for GMT. |

gmt2kml(1gmt) | Convert GMT data tables to KML files for Google Earth. |

gmt5syntax(1gmt) | Convert old GMT script to use new 'gmt ' syntax. |

gmt_shell_functions.sh(1gmt) | Practical functions to be used in GMT bourne shell scripts. |

gmtcolors(5gmt) | Explanation of color codes in GMT. |

gmtconnect(1gmt) | Connect individual lines whose end points match within tolerance. |

gmtconvert(1gmt) | Convert, Paste, and/or Extract columns from data tables. |

gmtdefaults(1gmt) | List current GMT default parameters. |

gmtflexure(1gmt) | Compute flexural deformation of 2-D loads, forces, bending and moments. |

gmtget(1gmt) | Get individual GMT default parameters. |

gmtgravmag3d(1gmt) | Compute the gravity/magnetic effect of a body by the method of Okabe. |

gmtinfo(1gmt) | Return information about data tables. |

gmtlogo(1gmt) | Adding a GMT graphics logo overlay to an illustration. |

gmtmath(1gmt) | Reverse Polish Notation (RPN) calculator for data tables. |

gmtpmodeler(1gmt) | Evaluate a plate motion model at given locations. |

gmtregress(1gmt) | Linear regression of 1-D data sets. |

gmtselect(1gmt) | Select data table subsets based on multiple spatial criteria. |

gmtset(1gmt) | Change individual GMT default parameters. |

gmtsimplify(1gmt) | Line reduction using the Douglas-Peucker algorithm. |

gmtspatial(1gmt) | Do geospatial operations on lines and polygons. |

gmtswitch(1gmt) | Switching between different GMT versions. |

gmtvector(1gmt) | Basic manipulation of Cartesian vectors. |

gmtwhich(1gmt) | Find full path to specified files. |

gpsgridder(1gmt) | Interpolate GPS strain vectors using Green's functions for elastic deformation. |

gravfft(1gmt) | Compute gravitational attraction of 3-D surfaces in the wavenumber (or frequency) domain. |

grd2cpt(1gmt) | Make linear or histogram-equalized color palette table from grid. |

grd2rgb(1gmt) | Write r/g/b grid files from a grid file, a raw RGB file, or SUN rasterfile. |

grd2xyz(1gmt) | Convert grid file to data table. |

grdblend(1gmt) | Blend several partially over-lapping grids into one large grid. |

grdclip(1gmt) | Clip the range of grids. |

grdcontour(1gmt) | Make contour map using a grid. |

grdconvert(1gmt) | Convert between different grid formats. |

grdcut(1gmt) | Extract subregion from a grid. |

grdedit(1gmt) | Modify header or content of a grid. |

grdfft(1gmt) | Do mathematical operations on grids in the wavenumber (or frequency) domain. |

grdfilter(1gmt) | Filter a grid in the space (or time) domain. |

grdflexure(1gmt) | Compute flexural deformation of 3-D surfaces for various rheologies. |

grdgradient(1gmt) | Compute directional derivative or gradient from a grid. |

grdgravmag3d(1gmt) | Compute the gravity effect of a grid by the method of Okabe. |

grdhisteq(1gmt) | Perform histogram equalization for a grid. |

grdimage(1gmt) | Project grids or images and plot them on maps. |

grdinfo(1gmt) | Extract information from grids. |

grdlandmask(1gmt) | "Create a ""wet-dry"" mask grid from shoreline data base". |

grdmask(1gmt) | Create mask grid from polygons or point coverage. |

grdmath(1gmt) | Reverse Polish Notation (RPN) calculator for grids (element by element). |

grdpaste(1gmt) | Join two grids along their common edge. |

grdpmodeler(1gmt) | Evaluate a plate motion model on a geographic grid. |

grdproject(1gmt) | Forward and inverse map transformation of grids. |

grdraster(1gmt) | Extract subregion from a binary raster and save as a GMT grid. |

grdredpol(1gmt) | Compute the Continuous Reduction To the Pole, AKA differential RTP. |

grdrotater(1gmt) | Finite rotation reconstruction of geographic grid. |

grdsample(1gmt) | Resample a grid onto a new lattice. |

grdseamount(1gmt) | Compute synthetic seamount (Gaussian or cone, circular or elliptical) bathymetry. |

grdspotter(1gmt) | Create CVA image from a gravity or topography grid. |

grdtrack(1gmt) | Sample grids at specified (x,y) locations. |

grdtrend(1gmt) | Fit trend surface to grids and compute residuals. |

grdvector(1gmt) | Plot vector field from two component grids. |

grdview(1gmt) | Create 3-D perspective image or surface mesh from a grid. |

grdvolume(1gmt) | Calculate grid volume and area constrained by a contour. |

greenspline(1gmt) | Interpolate using Green's functions for splines in 1-3 dimensions. |

gshhg(1gmt) | Extract data tables from binary GSHHG or WDBII data files. |

hotspotter(1gmt) | Create CVA image from seamount locations. |

img2grd(1gmt) | Extract subset of img file in Mercator or Geographic format. |

isogmt(1gmt) | Run GMT command or script in isolation mode. |

kml2gmt(1gmt) | Extract GMT table data from Google Earth KML files. |

makecpt(1gmt) | Make GMT color palette tables. |

mapproject(1gmt) | Do forward and inverse map transformations, datum conversions and geodesy. |

mgd77convert(1gmt) | Convert MGD77 data to other file formats. |

mgd77header(1gmt) | Create MGD77 headers from A77 files. |

mgd77info(1gmt) | Extract information about MGD77 files. |

mgd77list(1gmt) | Extract data from MGD77 files. |

mgd77magref(1gmt) | Evaluate the IGRF or CM4 magnetic field models. |

mgd77manage(1gmt) | Manage the content of MGD77+ files. |

mgd77path(1gmt) | Return paths to MGD77 cruises and directories. |

mgd77sniffer(1gmt) | Along-track quality control of MGD77 cruises. |

mgd77track(1gmt) | Plot track-line map of MGD77 cruises. |

nearneighbor(1gmt) | "Grid table data using a ""Nearest neighbor"" algorithm". |

originator(1gmt) | Associate seamounts with nearest hotspot point sources. |

postscriptlight(3gmt) | A PostScript based plotting library. |

project(1gmt) | Project table data onto lines or great circles, generate tracks, or translate coordinates. |

psbasemap(1gmt) | Plot PostScript base maps. |

psclip(1gmt) | Initialize or terminate polygonal clip paths. |

pscoast(1gmt) | Plot continents, shorelines, rivers, and borders on maps. |

pscontour(1gmt) | Contour table data by direct triangulation [method]. |

psconvert(1gmt) | Convert [E]PS file(s) to other formats using GhostScript. |

pscoupe(1gmt) | Plot cross-sections of focal mechanisms. |

pshistogram(1gmt) | Calculate and plot histograms. |

psimage(1gmt) | Place images or EPS files on maps. |

pslegend(1gmt) | Plot legends on maps. |

psmask(1gmt) | Use data tables to clip or mask map areas with no coverage. |

psmeca(1gmt) | Plot focal mechanisms on maps. |

pspolar(1gmt) | Plot polarities on the inferior focal half-sphere on maps. |

psrose(1gmt) | Plot a polar histogram (rose, sector, windrose diagrams). |

pssac(1gmt) | Plot seismograms in SAC format on maps. |

psscale(1gmt) | Plot a gray or color scale-bar on maps. |

pssegy(1gmt) | Plot a SEGY file on a map. |

pssegyz(1gmt) | Create imagemasked postscript from SEGY file. |

pssolar(1gmt) | Plot day-light terminators and other sunlight parameters. |

psternary(1gmt) | Plot data on ternary diagrams. |

pstext(1gmt) | Plot or typeset text on maps. |

psvelo(1gmt) | Plot velocity vectors, crosses, and wedges on maps. |

pswiggle(1gmt) | Plot z = f(x,y) anomalies along tracks. |

psxy(1gmt) | Plot lines, polygons, and symbols on maps. |

psxyz(1gmt) | Plot lines, polygons, and symbols in 3-D. |

rotconverter(1gmt) | Manipulate total reconstruction and stage rotations. |

sample1d(1gmt) | Resample 1-D table data using splines. |

segy2grd(1gmt) | Converting SEGY data to a GMT grid. |

spectrum1d(1gmt) | Compute auto- [and cross- ] spectra from one [or two] time-series. |

sph2grd(1gmt) | Compute grid from spherical harmonic coefficients. |

sphdistance(1gmt) | Make Voronoi distance, node, or nearest-neighbor grid on a sphere. |

sphinterpolate(1gmt) | Spherical gridding in tension of data on a sphere. |

sphtriangulate(1gmt) | Delaunay or Voronoi construction of spherical lon,lat data. |

splitxyz(1gmt) | Split xyz[dh] data tables into individual segments. |

surface(1gmt) | Grid table data using adjustable tension continuous curvature splines. |

talwani2d(1gmt) | Compute free-air, geoid or vertical gravity gradients anomalies over 2-D bodies. |

talwani3d(1gmt) | Compute free-air, geoid or vertical gravity gradients anomalies over 3-D bodies. |

trend1d(1gmt) | Fit a [weighted] [robust] polynomial [and/or Fourier] model for y = f(x) to xy[w] data. |

trend2d(1gmt) | Fit a [weighted] [robust] polynomial model for z = f(x,y) to xyz[w] data. |

triangulate(1gmt) | Do optimal (Delaunay) triangulation and gridding of Cartesian table data [method]. |

x2sys_binlist(1gmt) | Create bin index listing from track data files. |

x2sys_cross(1gmt) | Calculate crossovers between track data files. |

x2sys_datalist(1gmt) | Extract content of track data files. |

x2sys_get(1gmt) | Get track listing from the x2sys track index databases. |

x2sys_init(1gmt) | Initialize a new x2sys track database. |

x2sys_list(1gmt) | Extract subset from crossover data base. |

x2sys_merge(1gmt) | Merge an updated COEs table (smaller) into the main table (bigger). |

x2sys_put(1gmt) | Update track index database from track bin file. |

x2sys_report(1gmt) | Report statistics from crossover data base. |

x2sys_solve(1gmt) | Determine least-squares systematic correction from crossovers. |

xyz2grd(1gmt) | Convert data table to a grid file. |