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Top Forums Shell Programming and Scripting Extract certain columns from big data Post 302821487 by rveri on Friday 14th of June 2013 02:56:01 PM
Old 06-14-2013
happypoker,
You can use gnu awk and use array for the desired columns to store and print the data.
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gdalinfo(1)						      General Commands Manual						       gdalinfo(1)

NAME
gdalinfo - gdalinfo lists information about a raster dataset SYNOPSIS
gdalinfo [--help-general] [-mm] [-stats] [-hist] [-nogcp] [-nomd] [-noct] [-nofl] [-checksum] [-proj4] [-mdd domain]* [-sd subdataset] datasetname DESCRIPTION
The gdalinfo program lists various information about a GDAL supported raster dataset. -mm Force computation of the actual min/max values for each band in the dataset. -stats Read and display image statistics. Force computation if no statistics are stored in an image. -hist Report histogram information for all bands. -nogcp Suppress ground control points list printing. It may be useful for datasets with huge amount of GCPs, such as L1B AVHRR or HDF4 MODIS which contain thousands of them. -nomd Suppress metadata printing. Some datasets may contain a lot of metadata strings. -noct Suppress printing of color table. -checksum Force computation of the checksum for each band in the dataset. -mdd domain Report metadata for the specified domain -nofl (GDAL >= 1.9.0) Only display the first file of the file list. -sd subdataset (GDAL >= 1.9.0) If the input dataset contains several subdatasets read and display a subdataset with specified number (starting from 1). This is an alternative of giving the full subdataset name. -proj4 (GDAL >= 1.9.0) Report a PROJ.4 string corresponding to the file's coordinate system. The gdalinfo will report all of the following (if known): o The format driver used to access the file. o Raster size (in pixels and lines). o The coordinate system for the file (in OGC WKT). o The geotransform associated with the file (rotational coefficients are currently not reported). o Corner coordinates in georeferenced, and if possible lat/long based on the full geotransform (but not GCPs). o Ground control points. o File wide (including subdatasets) metadata. o Band data types. o Band color interpretations. o Band block size. o Band descriptions. o Band min/max values (internally known and possibly computed). o Band checksum (if computation asked). o Band NODATA value. o Band overview resolutions available. o Band unit type (i.e.. 'meters' or 'feet' for elevation bands). o Band pseudo-color tables. EXAMPLE
gdalinfo ~/openev/utm.tif Driver: GTiff/GeoTIFF Size is 512, 512 Coordinate System is: PROJCS["NAD27 / UTM zone 11N", GEOGCS["NAD27", DATUM["North_American_Datum_1927", SPHEROID["Clarke 1866",6378206.4,294.978698213901]], PRIMEM["Greenwich",0], UNIT["degree",0.0174532925199433]], PROJECTION["Transverse_Mercator"], PARAMETER["latitude_of_origin",0], PARAMETER["central_meridian",-117], PARAMETER["scale_factor",0.9996], PARAMETER["false_easting",500000], PARAMETER["false_northing",0], UNIT["metre",1]] Origin = (440720.000000,3751320.000000) Pixel Size = (60.000000,-60.000000) Corner Coordinates: Upper Left ( 440720.000, 3751320.000) (117d38'28.21"W, 33d54'8.47"N) Lower Left ( 440720.000, 3720600.000) (117d38'20.79"W, 33d37'31.04"N) Upper Right ( 471440.000, 3751320.000) (117d18'32.07"W, 33d54'13.08"N) Lower Right ( 471440.000, 3720600.000) (117d18'28.50"W, 33d37'35.61"N) Center ( 456080.000, 3735960.000) (117d28'27.39"W, 33d45'52.46"N) Band 1 Block=512x16 Type=Byte, ColorInterp=Gray AUTHORS
Frank Warmerdam warmerdam@pobox.com, Silke Reimer silke@intevation.de GDAL
Tue Sep 18 2012 gdalinfo(1)
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