grdgravmag3d – Compute the gravity effect of a grid by the method of Okabe Synopsisgrdgravmag3d grdfile_top [grdfile_bot] [ density ] [ thick ] [ xy_file ] [ outgrid ] [ <…> ] [ increment ] [ z_obs ] [ [nn_pad]|[pad_dist]|[<w/e/s/n>] ] [ region ] [ radius ] [ [level] ] [ level[b|t] ] [ -fg…
grdgradient – Compute directional derivative or gradient from a grid Synopsisgrdgradient in_grdfile out_grdfile [ azim[/azim2] ] [ [a][c][o][n] ] [ [s|p]azim/elev[/ambient/diffuse/specular/shine] ] [ flag ] [ [e][t][amp][/sigma[/offset]] ] [ region ] [ slopefile ] [ [level] ] [ -fg ] [ -n<flags> ] Note: No space is allowed between the option flag and the associated…
grdflexure – Compute flexural deformation of 3-D surfaces for various rheologies Synopsisgrdflexure topogrd rm/rl[/ri]/rw Te[u] outgrid [ Nx/Ny/Nxy ] [ ppoisson ] [ yYoung ] [ nu_a[/h_a/nu_m] ] [ list ] [ [f|q|s|nx/ny][+a|d|h|l][+e|n|m][+twidth][+w[suffix]][+z[p]] [ beta ] [ -Tt0[u][/t1[u]/dt[u]|n][+l] ] [ [level] ] [ wd] [ zm] [ -fg ] Note: No space is allowed between…
grdfilter – Filter a grid in the space (or time) domain Synopsisgrdfilter ingrid distance_flag xwidth[/width2][modifiers] outgrid [ increment ] [ i|p|r ] [ region ] [ ] [ [level] ] [ -f<flags> ] Note: No space is allowed between the option flag and the associated arguments. Descriptiongrdfilter will filter a grid file in the time…
grdfft – Do mathematical operations on grids in the wavenumber (or frequency) domain Synopsisgrdfft ingrid [ ingrid2 ] outfile [ azimuth ] [ zlevel ] [ [scale|g] ] [ [r|x|y][w[k]] ] [ [r|x|y]params ] [ [scale|g] ] [ [f|q|s|nx/ny][+a|d|h|l][+e|n|m][+twidth][+w[suffix]][+z[p]] ] [ scale ] [ [level] ] [ -fg ] Note: No space is allowed between…
grdedit – Modify header or content of a grid Synopsisgrdedit grid [ ] [ xname/yname/zname/scale/offset/invalid/title/remark ] [ [a|h|l|r|t|v] ] [ outgrid ] [ parameters ] [ table ] [ region ] [ ] [ ] [ [level] ] [ -bi<binary> ] [ -di<nodata> ] [ -f<flags> ] [ -i<flags> ] [ -:[i|o] ] Note: No…
grdcut – Extract subregion from a grid Synopsisgrdcut ingrid outgrid region [ [nodata] ] [ [n]lon/lat/radius[unit] ] [ [level] ] [ [n|r]min/max ] [ -f<flags> ] Note: No space is allowed between the option flag and the associated arguments. Descriptiongrdcut will produce a new outgrid file which is a subregion of ingrid. The subregion is…
grdconvert – Convert between different grid formats Synopsisgrdconvert ingrdfile[=id[/scale/offset[/NaNvalue]]] outgrdfile[=id[/scale/offset[/NaNvalue]][:driver[/datatype]]] [ ] [ region ] [ [level] ] [ -f<flags> ] Note: No space is allowed between the option flag and the associated arguments. Descriptiongrdconvert reads a grid file in one format and writes it out using another format. As an option the user may…
grdcontour – Make contour map using a grid Synopsisgrdcontour grid [+]cont_int|cpt parameters [ [–|[+]annot_int][labelinfo] ] [ [p|s]parameters ] [ <template> ] [ [l|r] ] [ [d|f|n|l|L|x|X]params ] [ z|Zparameters ] [ ] [ low/high ] [ ] [ ] [ cut ] [ west/east/south/north[/zmin/zmax][r] ] [ smoothfactor ] [ [+|-][+dgap[/length]][+l[labels]] ] [ [just/dx/dy/][c|label] ] […
grdclip – Clip the range of grids Synopsisgrdclip ingrid outgrid [ region ] [ ahigh/above ] [ blow/below ] [ ilow/high/between ] [ rold/new ] [ [level] ] Note: No space is allowed between the option flag and the associated arguments. Descriptiongrdclip will set values < low to below and/or values > high to above….
grdblend – Blend several partially over-lapping grids into one large grid Synopsisgrdblend [ blendfile | grid1 grid2 … ] outgrid [ increment ] [ region ] [ f|l|o|u ] [ nodata ] [ ] [ scale ] [ [level] ] [ [z] ] [ -f<flags> ] [ -r ] Note: No space is allowed between…
grd2xyz – Convert grid file to data table Synopsisgrd2xyz grid [ [f|i] ] [ region ] [ [level] ] [ [weight] ] [ [flags] ] [ -bo<binary> ] [ -d<nodata> ] [ -f<flags> ] [ -ho[n] ] [ -o<flags> ] [ -s<flags> ] Note: No space is allowed between the option flag and the associated…
grd2rgb – Write r/g/b grid files from a grid file, a raw RGB file, or SUN rasterfile Synopsisgrd2rgb infile template [ cpt ] [ xinc[m|s][/yinc[m|s]] ] [ layer ] region [level] [ width/height[/n_bytes] ] [ -r ] Note: No space is allowed between the option flag and the associated arguments. Descriptiongrd2rgb reads one of three…
grd2cpt – Make linear or histogram-equalized color palette table from grid Synopsisgrd2cpt grid [ [+]transparency ] [ cpt ] [ [i|o] ] [ nlevels ] [ [R|r|h|c ] [ zlo/zhi ] [ ] [ minlimit/maxlimit ] [ ] [ ] [ [i|o] ] [ region ] [ zstart/zstop/zinc ] [ –|+|_|= ] [ [level] ]…
grconvert Descriptiongrconvert converts old binary project files from Xmgr 4.0 to an ASCII format understood by late versions of Xmgr and Grace 5.x Synopsisgrconvert <infile> <outfile> OptionsNone. See Alsograce(1), gracebat(1), xmgrace(1) Home Pagehttp://plasma-gate.weizmann.ac.il/Grace/ BugsThe best way to submit a bug report is using the "Help/Comments" menu entry of xmgrace (GUI version of Grace). Alternatively, see…
gravfft – Compute gravitational attraction of 3-D surfaces in the wavenumber (or frequency) domain Synopsisgravfft ingrid [ ingrid2 ] outfile [ n/wavelength/mean_depth/tbw ] [ density|rhogrid ] [ n_terms ] [ [f[+]|g|v|n|e] ] [ w|b|c|t |k ] [ [f|q|s|nx/ny][+a|d|h |l][+e|n|m][+twidth][+w[suffix]][+z[p]] [ ] [ te/rl/rm/rw[+m] ] [ [level] ] [ wd] [ zm[zl] ] [ -fg ]…
grass63 – The GRASS startup program Synopsisgrass63 [–] [-v] [-h | -help | –help] [-text | -gui | -oldgui]] [[[/]/] ] DescriptionThis program is used to start GRASS. It will parse the command line arguments and then initialize GRASS for the user. Since GRASS programs require a specific environment, this program must be called before…
Creating a SQLite databaseGRASS is automatically creating the SQLite database if it is not yet existing. It is sufficient to define the connection (see next step). Connecting GRASS to SQLiteThe database name ‘sqlite.db’ is at user’s choice. Also the file storage location can be freely chosen. If the database does not exist, it will be…
The driver name is ‘pg’. Creating a PostgreSQL databaseA new database is created with ‘createdb’, see the PostgreSQL manual for details. Connecting GRASS to PostgreSQL# example for connecting to a PostgreSQL server: db.connect driver=pg database="host=myserver.itc.it,dbname=mydb" db.login user=myname pass=secret db.connect -p db.tables -p Supported SQL commandsAll SQL commands supported by PostgreSQL. Operators available in conditionsAll SQL…
Communication between GRASS and ODBC database for attribute management: | GRASS module | | ODBC Interface | | RDBMS | GRASS | DBMI driver | unixODBC | ODBC driver | PostgreSQL | Oracle | … Supported SQL commandsAll SQL commands supported by ODBC. Operators available in conditionsAll SQL operators supported by ODBC. ExampleIn this example…