GeoTIFF - Versionsgeschichte

Das-g: /* General information */ make cogoe.org a link

2018-02-20T13:57:08Z

General information: make cogoe.org a link

← Nächstältere Version		Version vom 20. Februar 2018, 13:57 Uhr
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	==== General information ====		==== General information ====
	* cogeo.org		* http://cogeo.org
	* https://trac.osgeo.org/gdal/wiki/CloudOptimizedGeoTIFF		* https://trac.osgeo.org/gdal/wiki/CloudOptimizedGeoTIFF
	* [https://fosdem.org/2018/schedule/event/geo_gdal/ FOSDEM'18 talk "GDAL Tips and Tricks - GDAL installation, Python usage, and Cloud GeoTIFFs"] by Jeremy Mayeres, 00:09:10 to 00:13:18		* [https://fosdem.org/2018/schedule/event/geo_gdal/ FOSDEM'18 talk "GDAL Tips and Tricks - GDAL installation, Python usage, and Cloud GeoTIFFs"] by Jeremy Mayeres, 00:09:10 to 00:13:18

Das-g: /* usage */ fix markup

2018-02-06T11:21:05Z

usage: fix markup

← Nächstältere Version		Version vom 6. Februar 2018, 11:21 Uhr
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	gdalinfo /vsicurl/http://landsat-pds.s3.amazonaws.com/L8/001/003/LC80010032014272LGN00/LC80010032014272LGN00_B1.TIF		gdalinfo /vsicurl/http://landsat-pds.s3.amazonaws.com/L8/001/003/LC80010032014272LGN00/LC80010032014272LGN00_B1.TIF

	will only <~~tt<~~HTTP GET</tt> the beginning of the file (with the metadata), not the complete GeoTIFF. Some [http://www.cogeo.org/#implementations other software] supports this as well. Also fetching only up to the neede overview when viewing data "zoomed out".		will only <code>HTTP GET</code> the beginning of the file (with the metadata), not the complete GeoTIFF. Some [http://www.cogeo.org/#implementations other software] supports this as well. Also fetching only up to the neede overview when viewing data "zoomed out".

Das-g: /* "cloud optimized" GeoTIFF */ +usage

2018-02-06T11:20:21Z

"cloud optimized" GeoTIFF: +usage

← Nächstältere Version		Version vom 6. Februar 2018, 11:20 Uhr
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	http://www.cogeo.org/developers-guide.html uses <code>-co COMPRESS=DEFLATE</code> instead of <code>-co COMPRESS=LZW</code>. According to https://trac.osgeo.org/gdal/wiki/CloudOptimizedGeoTIFF#Unspecifiedpoints, either can be used.		http://www.cogeo.org/developers-guide.html uses <code>-co COMPRESS=DEFLATE</code> instead of <code>-co COMPRESS=LZW</code>. According to https://trac.osgeo.org/gdal/wiki/CloudOptimizedGeoTIFF#Unspecifiedpoints, either can be used.

			==== usage ====

			gdalinfo /vsicurl/http://landsat-pds.s3.amazonaws.com/L8/001/003/LC80010032014272LGN00/LC80010032014272LGN00_B1.TIF

			will only <tt<HTTP GET</tt> the beginning of the file (with the metadata), not the complete GeoTIFF. Some [http://www.cogeo.org/#implementations other software] supports this as well. Also fetching only up to the neede overview when viewing data "zoomed out".

Das-g: add new Tipp /* "cloud optimized" GeoTIFF */

2018-02-06T11:03:59Z

add new Tipp "cloud optimized" GeoTIFF

← Nächstältere Version		Version vom 6. Februar 2018, 11:03 Uhr
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	% gdal_translate -of VRT your.tif work.vrt		% gdal_translate -of VRT your.tif work.vrt
	% gdal_translate work.vrt fixed_your.tif		% gdal_translate work.vrt fixed_your.tif

			=== "cloud optimized" GeoTIFF ===

			==== General information ====
			* cogeo.org
			* https://trac.osgeo.org/gdal/wiki/CloudOptimizedGeoTIFF
			* [https://fosdem.org/2018/schedule/event/geo_gdal/ FOSDEM'18 talk "GDAL Tips and Tricks - GDAL installation, Python usage, and Cloud GeoTIFFs"] by Jeremy Mayeres, 00:09:10 to 00:13:18

			==== creation: GeoTIFF to "cloud optimized GeoTIFF ====

			(According to above talk, 00:11:14)

			Create internal overviews (if not already created)

			gdaladdo -r average in.tif 2 4 8 16

			Then

			gdal_translate in.tif out.tif \
			-co TILED=YES \
			-co COPY_SRC_OVERVIEWS=YES \
			-co COMPRESS=LZW

			Host result on server supporting HTTP 1.1 Range Requests (Byte Serving). (Amazon S3, Google Cloud Storage, Azure all support this.)

			http://www.cogeo.org/developers-guide.html uses <code>-co COMPRESS=DEFLATE</code> instead of <code>-co COMPRESS=LZW</code>. According to https://trac.osgeo.org/gdal/wiki/CloudOptimizedGeoTIFF#Unspecifiedpoints, either can be used.

Das-g: make each HowTo/Tip a subsection

2018-02-06T10:46:43Z

make each HowTo/Tip a subsection

← Nächstältere Version		Version vom 6. Februar 2018, 10:46 Uhr
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	== Tipps ==		== Tipps ==

	* Howto convert Tiff to GeoTIFF~~: See [[GDAL]].~~		=== How to convert Tiff to GeoTIFF ===

	* How ~~can one~~ remove the nodata values from a GeoTIFF? I find many instructions on how to add the values, but none on how to remove them. => There isn't a direct way of accomplishing this. You could extract a work.vrt file, then manually edit it and remove the line(s) with the NoDataValue tags. Then convert back to geotiff:		See [[GDAL]].

			=== How to remove the nodata values from a GeoTIFF? ===

			I find many instructions on how to add the values, but none on how to remove them. => There isn't a direct way of accomplishing this. You could extract a work.vrt file, then manually edit it and remove the line(s) with the NoDataValue tags. Then convert back to geotiff:

	% gdal_translate -of VRT your.tif work.vrt		% gdal_translate -of VRT your.tif work.vrt
	% gdal_translate work.vrt fixed_your.tif		% gdal_translate work.vrt fixed_your.tif

Stefan: /* Tipps = */

2008-12-30T12:31:14Z

Tipps =

← Nächstältere Version		Version vom 30. Dezember 2008, 12:31 Uhr
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	* [[GDAL]] - Translator		* [[GDAL]] - Translator

	== Tipps ===		== Tipps ==

	* Howto convert Tiff to GeoTIFF: See [[GDAL]].		* Howto convert Tiff to GeoTIFF: See [[GDAL]].

Stefan: Die Seite wurde neu angelegt: See also: * GDAL - Translator == Tipps === * Howto convert Tiff to GeoTIFF: See GDAL. * How can one remove the nodata values from a GeoTIFF? I find many inst...

2008-12-30T12:31:04Z

Die Seite wurde neu angelegt: See also: * GDAL - Translator == Tipps === * Howto convert Tiff to GeoTIFF: See GDAL. * How can one remove the nodata values from a GeoTIFF? I find many inst...

Neue Seite

See also:
* [[GDAL]] - Translator

== Tipps ===

* Howto convert Tiff to GeoTIFF: See [[GDAL]].

* How can one remove the nodata values from a GeoTIFF? I find many instructions on how to add the values, but none on how to remove them. => There isn't a direct way of accomplishing this. You could extract a work.vrt file, then manually edit it and remove the line(s) with the NoDataValue tags. Then convert back to geotiff:

% gdal_translate -of VRT your.tif work.vrt
% gdal_translate work.vrt fixed_your.tif