The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
NAME grdgradient – Compute directional derivative or gradient from a grid SYNOPSIS grdgradient 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…
NAME grdflexure – Compute flexural deformation of 3-D surfaces for various rheologies SYNOPSIS grdflexure 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…
NAME grdfilter – Filter a grid in the space (or time) domain SYNOPSIS grdfilter 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. DESCRIPTION grdfilter will filter a grid file…
NAME grdfft – Do mathematical operations on grids in the wavenumber (or frequency) domain SYNOPSIS grdfft 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…
NAME grdedit – Modify header or content of a grid SYNOPSIS grdedit 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] ]…
NAME grdcut – Extract subregion from a grid SYNOPSIS grdcut 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. DESCRIPTION grdcut will produce a new outgrid file which is a subregion of ingrid….
NAME grdconvert – Convert between different grid formats SYNOPSIS grdconvert 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. DESCRIPTION grdconvert reads a grid file in one format and writes it out using another format. As an option…
NAME grdcontour – Make contour map using a grid SYNOPSIS grdcontour 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]…
NAME grdclip – Clip the range of grids SYNOPSIS grdclip 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. DESCRIPTION grdclip will set values < low to below and/or values >…
NAME grdblend – Blend several partially over-lapping grids into one large grid SYNOPSIS grdblend [ blendfile | grid1 grid2 … ] outgrid [ increment ] [ region ] [ f|l|o|u ] [ nodata ] [ ] [ scale ] [ [level] ] [ [z] ] [ -f<flags> ] [ -r ] Note: No space is…
NAME grd2xyz – Convert grid file to data table SYNOPSIS grd2xyz 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…
NAME grd2rgb – Write r/g/b grid files from a grid file, a raw RGB file, or SUN rasterfile SYNOPSIS grd2rgb 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. DESCRIPTION grd2rgb reads…
NAME grd2cpt – Make linear or histogram-equalized color palette table from grid SYNOPSIS grd2cpt grid [ [+]transparency ] [ cpt ] [ [i|o] ] [ nlevels ] [ [R|r|h|c ] [ zlo/zhi ] [ ] [ minlimit/maxlimit ] [ ] [ ] [ [i|o] ] [ region ] [ zstart/zstop/zinc ] [ –|+|_|= ] […
NAME grconvert DESCRIPTION grconvert converts old binary project files from Xmgr 4.0 to an ASCII format understood by late versions of Xmgr and Grace 5.x SYNOPSIS grconvert <infile> <outfile> OPTIONS None. SEE ALSO grace(1), gracebat(1), xmgrace(1) HOME PAGE http://plasma-gate.weizmann.ac.il/Grace/ BUGS The best way to submit a bug report is using the "Help/Comments" menu entry of…
NAME gravfft – Compute gravitational attraction of 3-D surfaces in the wavenumber (or frequency) domain SYNOPSIS gravfft 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] ] […
NAME grass63 – The GRASS startup program SYNOPSIS grass63 [–] [-v] [-h | -help | –help] [-text | -gui | -oldgui]] [[[/]/] ] DESCRIPTION This 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…
Creating a SQLite database GRASS 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 SQLite The 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…
The driver name is ‘pg’. Creating a PostgreSQL database A 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 commands All SQL commands supported by PostgreSQL. Operators available…
Communication between GRASS and ODBC database for attribute management: | GRASS module | | ODBC Interface | | RDBMS | GRASS | DBMI driver | unixODBC | ODBC driver | PostgreSQL | Oracle | … Supported SQL commands All SQL commands supported by ODBC. Operators available in conditions All SQL operators supported by ODBC. EXAMPLE…
MySQL database driver in GRASS enables GRASS to store vector attributes in MySQL server. Because vector attribute tables are created automaticaly when a new vector is written and the name of the table is the same as the name of the vector it is good practice to create a new database for each GRASS mapset….