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kml2gmt(1gmt) [debian man page]

KML2GMT(1gmt)						       Generic Mapping Tools						     KML2GMT(1gmt)

kml2gmt - Extract GMT table data from Google Earth KML files SYNOPSIS
kml2gmt [ infile ] [ -V ] [ -Z ] [ -:[i|o] ] [ -bo[s|S|d|D[ncol]|c[var1/...]] ] DESCRIPTION
kml2gmt reads a Google Earth KML file and outputs a GMT table file. Only KML files that contain points, lines, or polygons can be pro- cessed. This is a bare-bones operation that aims to extract coordinates and possibly the name and description tags of each feature. The main use intended is to capture coordinates modified in Google Earth and then reinsert the modified data into the original GMT data file. For a more complete reformatting, consider using ogr2ogr -f "GMT" somefile.gmt somefile.kml. infile Name of the KML file to work on. If not given, standard input is read. OPTIONS
No space between the option flag and the associated arguments. -Z Output the altitude coordinates as GMT z coordinates [Default will output just longitude and latitude]. -V Selects verbose mode, which will send progress reports to stderr [Default runs "silently"]. -: Toggles between (longitude,latitude) and (latitude,longitude) input and/or output. [Default is (longitude,latitude)]. Append i to select input only or o to select output only. [Default affects both]. -bo Selects binary output. Append s for single precision [Default is d (double)]. Uppercase S or D will force byte-swapping. Option- ally, append ncol, the number of desired columns in your binary output file. EXAMPLES
gmtdefaults(1), GMT(1), img2google(1), ps2raster(1) gmt2kml(1) GMT 4.5.7 15 Jul 2011 KML2GMT(1gmt)

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BLOCKMEAN(l)															      BLOCKMEAN(l)

blockmean - filter to block average (x,y,z) data by L2 norm SYNOPSIS
blockmean [ xyz[w]file(s) ] -Ix_inc[m|c][/y_inc[m|c]] -Rwest/east/south/north[r] [ -C ] [ -F ] [ -H[nrec] ] [ -L ] [ -S ] [ -V ] [ -W[io] ] [ -: ] [ -bi[s][n] ] [ -bo[s][n] ] DESCRIPTION
blockmean reads arbitrarily located (x,y,z) triples [or optionally weighted quadruples (x,y,z,w)] from standard input [or xyz[w]file(s)] and writes to standard output a mean position and value for every non-empty block in a grid region defined by the -R and -I arguments. Either blockmean, blockmedian, or blockmode should be used as a pre-processor before running surface to avoid aliasing short wavelengths. These routines are also generally useful for decimating or averaging (x,y,z) data. You can modify the precision of the output format by editing the D_FORMAT parameter in your .gmtdefaults file, or you may choose binary input and/or output using single or double precision storage. xyz[w]file(s) 3 [or 4] column ASCII file(s) [or binary, see -b] holding (x,y,z[,w]) data values. [w] is an optional weight for the data. If no file is specified, blockmean will read from standard input. -I x_inc [and optionally y_inc] is the grid spacing. Append m to indicate minutes or c to indicate seconds. -R west, east, south, and north specify the Region of interest. To specify boundaries in degrees and minutes [and seconds], use the dd:mm[:ss] format. Append r if lower left and upper right map coordinates are given instead of wesn. OPTIONS
-C Use the center of the block as the output location [Default uses the mean location]. -F Block centers have pixel registration. [Default: grid registration.] (Registrations are defined in GMT Cookbook Appendix B on grid file formats.) Each block is the locus of points nearest the grid value location. For example, with -R10/15/10/15 and and -I1: with the -F option 10 <= (x,y) < 11 is one of 25 blocks; without it 9.5 <= (x,y) < 10.5 is one of 36 blocks. -H Input file(s) has Header record(s). Number of header records can be changed by editing your .gmtdefaults file. If used, GMT default is 1 header record. Not used with binary data. -L Indicates that the x column contains longitudes, which may differ from the region in -R by [multiples of] 360 degrees [Default assumes no periodicity]. -S Report the sum of all z-values inside a block [Default reports mean value]. -V Selects verbose mode, which will send progress reports to stderr [Default runs "silently"]. -W Weighted modifier[s]. Unweighted input and output has 3 columns x,y,z; Weighted i/o has 4 columns x,y,z,w. Weights can be used in input to construct weighted mean values in blocks. Weight sums can be reported in output for later combining several runs, etc. Use -W for weighted i/o, -Wi for weighted input only, -Wo for weighted output only. [Default uses unweighted i/o] -: Toggles between (longitude,latitude) and (latitude,longitude) input/output. [Default is (longitude,latitude)]. Applies to geo- graphic coordinates only. -bi Selects binary input. Append s for single precision [Default is double]. Append n for the number of columns in the binary file(s). [Default is 3 (or 4 if -W is set)]. -bo Selects binary output. Append s for single precision [Default is double]. EXAMPLES
To find 5 by 5 minute block means from the ASCII data in hawaii.xyg, try blockmean hawaii.xyg -R198/208/18/25 -I5m > hawaii_5x5.xyg SEE ALSO
blockmedian(1gmt), blockmode(1gmt), gmtdefaults(1gmt), gmt(1gmt), nearneighbor(1gmt), surface(1gmt), triangulate(1gmt) 1 Jan 2004 BLOCKMEAN(l)
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