GDAL - Versionsgeschichte

Stefan: /* gdal_merge for merging */

2015-04-02T13:54:23Z

gdal_merge for merging

← Nächstältere Version		Version vom 2. April 2015, 13:54 Uhr
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	gdal_translate -of XYZ elevation.tif elevation.xyz		gdal_translate -of XYZ elevation.tif elevation.xyz

	=== gdal_merge for merging ===		=== gdal_merge for merging maps ===

	gdal_merge -o eins.tif -co TILED=YES -co COMPRESS=LZW --optfile _filelist.txt -n 0 -init 255		gdal_merge -o eins.tif -co TILED=YES -co COMPRESS=LZW --optfile _filelist.txt -n 0 -init 255

	Note the use of -n 0 when merging to treat areas of zero value as nodata. The gdalwarp commands are used in this case to transform to WGS84 so the images will be in a common coordinate system.		Note the use of -n 0 when merging to treat areas of zero value as nodata. The gdalwarp commands are used in this case to transform to WGS84 so the images will be in a common coordinate system.

	=== gdal_warp for coordinate transformation ===		=== gdal_warp for coordinate transformation ===

Stefan: /* GDAL mit Python programmieren */

2015-04-02T13:53:31Z

GDAL mit Python programmieren

← Nächstältere Version		Version vom 2. April 2015, 13:53 Uhr
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	Blog post: http://blog.cleverelephant.ca/2015/02/geotiff-compression-for-dummies.html		Blog post: http://blog.cleverelephant.ca/2015/02/geotiff-compression-for-dummies.html

	=== GDAL ~~mit~~ Python ~~programmieren~~ ===		=== GDAL and Python ===

	See [[Geoprocessing mit Python]]		See [[Geoprocessing mit Python]]

Stefan: /* gdal_warp for transformation */

2015-04-02T13:52:57Z

gdal_warp for transformation

← Nächstältere Version		Version vom 2. April 2015, 13:52 Uhr
Zeile 58:		Zeile 58:
	Note the use of -n 0 when merging to treat areas of zero value as nodata. The gdalwarp commands are used in this case to transform to WGS84 so the images will be in a common coordinate system.		Note the use of -n 0 when merging to treat areas of zero value as nodata. The gdalwarp commands are used in this case to transform to WGS84 so the images will be in a common coordinate system.

	=== gdal_warp for transformation ===		=== gdal_warp for coordinate transformation ===

	gdalwarp img1.img img1_wgs84.img -t_srs WGS84		gdalwarp img1.img img1_wgs84.img -t_srs WGS84

Stefan: /* gdaladdo for pyramids */

2015-04-02T13:52:31Z

gdaladdo for pyramids

← Nächstältere Version		Version vom 2. April 2015, 13:52 Uhr
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	gdal_merge.py img1_wgs84.img img2_wgs84.img -o mosaic.tif -n 0		gdal_merge.py img1_wgs84.img img2_wgs84.img -o mosaic.tif -n 0

	=== gdaladdo for pyramids ===		=== gdaladdo for generating tile pyramids ===

	gdaladdo -r gauss C:\SG.tif 2 4 8 16 32 64 128 256		gdaladdo -r gauss C:\SG.tif 2 4 8 16 32 64 128 256

Stefan: /* GDAL How To */

2015-03-08T11:35:47Z

GDAL How To

← Nächstältere Version		Version vom 8. März 2015, 11:35 Uhr
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	== GDAL How To ==		== GDAL How To ==

	==~~= GeoTiff Compression~~ for ~~Dummies =~~==		== gdal_translate for format conversion ==

	~~Blog post: http://blog~~.~~cleverelephant.ca/2015/02/geotiff-compression-for-dummies~~.~~html~~		gdal_translate -of XYZ elevation.tif elevation.xyz

	=== gdal_merge for merging ===		=== gdal_merge for merging ===
Zeile 67:		Zeile 67:

	gdaladdo -r gauss C:\SG.tif 2 4 8 16 32 64 128 256		gdaladdo -r gauss C:\SG.tif 2 4 8 16 32 64 128 256

			=== GeoTiff Compression for Dummies ===

			Blog post: http://blog.cleverelephant.ca/2015/02/geotiff-compression-for-dummies.html

	=== GDAL mit Python programmieren ===		=== GDAL mit Python programmieren ===

Stefan: /* GDAL How To */

2015-02-20T10:03:03Z

GDAL How To

← Nächstältere Version		Version vom 20. Februar 2015, 10:03 Uhr
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	== GDAL How To ==		== GDAL How To ==

			=== GeoTiff Compression for Dummies ===

			Blog post: http://blog.cleverelephant.ca/2015/02/geotiff-compression-for-dummies.html

	=== gdal_merge for merging ===		=== gdal_merge for merging ===

Stefan am 20. Februar 2015 um 10:01 Uhr

2015-02-20T10:01:05Z

← Nächstältere Version		Version vom 20. Februar 2015, 10:01 Uhr
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	== Formate ==		== Formate ==

			Often used formats:
			# GeoTIFF
			# HGT
			# (VRT - s special GDAL file for input which points to the 'real' files)
			# (JPG/JPEG is a lossy file format suited for images but not for grid files like DTMs. Note that JPEG is also a compression option inside TIFF!)

	Hier ein Auszug aus den verfügbaren Rasterformate ('ro' is read-only driver; 'rw' is read or write (ie. supports CreateCopy); 'rw+' is read, write and update (ie. supports Create)):		Hier ein Auszug aus den verfügbaren Rasterformate ('ro' is read-only driver; 'rw' is read or write (ie. supports CreateCopy); 'rw+' is read, write and update (ie. supports Create)):
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	== GDAL How To ==		== GDAL How To ==

	=== gdal_merge ===		=== gdal_merge for merging ===

	gdal_merge -o eins.tif -co TILED=YES -co COMPRESS=LZW --optfile _filelist.txt -n 0 -init 255		gdal_merge -o eins.tif -co TILED=YES -co COMPRESS=LZW --optfile _filelist.txt -n 0 -init 255
Zeile 48:		Zeile 54:
	Note the use of -n 0 when merging to treat areas of zero value as nodata. The gdalwarp commands are used in this case to transform to WGS84 so the images will be in a common coordinate system.		Note the use of -n 0 when merging to treat areas of zero value as nodata. The gdalwarp commands are used in this case to transform to WGS84 so the images will be in a common coordinate system.

	=== gdal_warp ===		=== gdal_warp for transformation ===

	gdalwarp img1.img img1_wgs84.img -t_srs WGS84		gdalwarp img1.img img1_wgs84.img -t_srs WGS84
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	gdal_merge.py img1_wgs84.img img2_wgs84.img -o mosaic.tif -n 0		gdal_merge.py img1_wgs84.img img2_wgs84.img -o mosaic.tif -n 0

	=== ~~gdal~~ pyramids ===		=== gdaladdo for pyramids ===

	gdaladdo -r gauss C:\SG.tif 2 4 8 16 32 64 128 256		gdaladdo -r gauss C:\SG.tif 2 4 8 16 32 64 128 256

Stefan am 20. Februar 2015 um 09:57 Uhr

2015-02-20T09:57:36Z

← Nächstältere Version		Version vom 20. Februar 2015, 09:57 Uhr
Zeile 53:		Zeile 53:
	gdalwarp img2.img img2_wgs84.img -t_srs WGS84		gdalwarp img2.img img2_wgs84.img -t_srs WGS84
	gdal_merge.py img1_wgs84.img img2_wgs84.img -o mosaic.tif -n 0		gdal_merge.py img1_wgs84.img img2_wgs84.img -o mosaic.tif -n 0

			=== gdal pyramids ===

			gdaladdo -r gauss C:\SG.tif 2 4 8 16 32 64 128 256

	=== GDAL mit Python programmieren ===		=== GDAL mit Python programmieren ===
Zeile 58:		Zeile 62:
	See [[Geoprocessing mit Python]]		See [[Geoprocessing mit Python]]


	~~=== gdal pyramids ===~~

	~~gdaladdo -r gauss C:\SG.tif 2 4 8 16 32 64 128 256~~

	[[Kategorie:Raster]] [[Kategorie:Konverter]]		[[Kategorie:Raster]] [[Kategorie:Konverter]]

Stefan am 20. Februar 2015 um 09:57 Uhr

2015-02-20T09:57:11Z

← Nächstältere Version		Version vom 20. Februar 2015, 09:57 Uhr
Zeile 58:		Zeile 58:
	See [[Geoprocessing mit Python]]		See [[Geoprocessing mit Python]]


			=== gdal pyramids ===

			gdaladdo -r gauss C:\SG.tif 2 4 8 16 32 64 128 256

	[[Kategorie:Raster]] [[Kategorie:Konverter]]		[[Kategorie:Raster]] [[Kategorie:Konverter]]

Stefan am 2. April 2014 um 23:08 Uhr

2014-04-02T23:08:24Z

← Nächstältere Version		Version vom 2. April 2014, 23:08 Uhr
Zeile 53:		Zeile 53:
	gdalwarp img2.img img2_wgs84.img -t_srs WGS84		gdalwarp img2.img img2_wgs84.img -t_srs WGS84
	gdal_merge.py img1_wgs84.img img2_wgs84.img -o mosaic.tif -n 0		gdal_merge.py img1_wgs84.img img2_wgs84.img -o mosaic.tif -n 0

			=== GDAL mit Python programmieren ===

			See [[Geoprocessing mit Python]]


	[[Kategorie:Raster]] [[Kategorie:Konverter]]		[[Kategorie:Raster]] [[Kategorie:Konverter]]