L (blockmeanx,y,z) table data filter/decimatorL (blockmedianx,y,z) table data filter/decimatorMode estimate (blockmodex,y,z) table data filter/decimatorFilter 1-D table data sets (time series)filter1dFinds the best-fitting great or small circle for a set of pointsfitcircleConvert Sun raster or grd file to red, green, blue component gridsgmt2rgbConvert data tables from one format to anothergmtconvertList the current default settingsgmtdefaultsMathematical operations on table datagmtmathSelect subsets of table data based on multiple spatial criteriagmtselectChange selected parameters in currentgmtset.gmtdefaults4fileGenerate a color palette table from a gridded filegrd2cptConversion from 2-D gridded file to table datagrd2xyzBlend several partially over-lapping grdfiles onto one gridgrdblendLimit thegrdclipz-range in gridded data setsContouring of 2-D gridded data setsgrdcontourCut a sub-region from a gridded filegrdcutModify header information in a 2-D gridded filegrdeditPerform operations on gridded files in the frequency domaingrdfftFilter 2-D gridded data sets in the space domaingrdfilterCompute directional gradient from gridded filesgrdgradientHistogram equalization for gridded filesgrdhisteqProduce images from 2-D gridded data setsgrdimageGet information about gridded filesgrdinfoCreate masking gridded files from shoreline data basegrdlandmaskReset grid nodes in/outside a clip path to constantsgrdmaskMathematical operations on gridded filesgrdmathPaste together gridded files along a common edgegrdpasteProject gridded data sets onto a new coordinate systemgrdprojectConverts gridded files into other grid formatsgrdreformatResample a 2-D gridded data set onto a new gridgrdsampleSampling of 2-D gridded data set along 1-D trackgrdtrackFits polynomial trends to gridded filesgrdtrendPlotting of 2-D gridded vector fieldsgrdvector3-D perspective imaging of 2-D gridded data setsgrdviewCalculate volumes under a surface within specified contourgrdvolumeMake color palette tablesmakecptTransformation of coordinate systems for table datamapprojectReport extreme values in table data filesminmaxNearest-neighbor gridding schemenearneighborProject table data onto lines or great circlesprojectCreate a basemap plotpsbasemapUse polygon files to define clipping pathspsclipPlot [and fill] coastlines, borders, and rivers on mapspscoastContour or image raw table data by triangulationpscontourPlot a histogrampshistogramPlot Sun rasterfiles on a mappsimagePlot a legend on a mappslegendCreate overlay to mask out regions on mapspsmaskPlot sector or rose diagramspsrosePlot grayscale or colorscale on mapspsscalePlot textstrings on mapspstextDraw table data time-series along track on mapspswigglePlot symbols, polygons, and lines on mapspsxyPlot symbols, polygons, and lines in 3-DpsxyzResampling of 1-D table data setssample1dCompute various spectral estimates from time-seriesspectrum1dSplitsplitxyzxyzfiles into several segmentsA continuous curvature gridding algorithmsurfaceFits polynomial or Fourier trends to seriestrend1dFits polynomial trends to seriestrend2dPerform optimal Delauney triangulation and griddingtriangulateConvert an equidistant tablexyz2grdxyzfile to a 2-D gridded file