How to get data only inside polygon created by points which is part of whole data from file?

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kml2gmt

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

NAME

       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

SEE ALSO

       gmtdefaults(1), GMT(1), img2google(1), ps2raster(1) gmt2kml(1)

GMT 4.5.7							    15 Jul 2011 						     KML2GMT(1gmt)

UNIX for Dummies Questions & Answers