Importing large GADM vector data - Revision history

Neteler: Neteler moved page Importing large vector data to Importing large GADM vector data: more meaningful title

2016-09-18T20:05:08Z

Neteler moved page Importing large vector data to Importing large GADM vector data: more meaningful title

← Older revision		Revision as of 20:05, 18 September 2016
(No difference)

Neteler at 18:05, 31 December 2013

2013-12-31T18:05:08Z

← Older revision		Revision as of 18:05, 31 December 2013
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	[[Category: massive data analysis]]		[[Category: massive data analysis]]
	[[Category: Import]]		[[Category: Import]]
			[[Category: Vector]]

Neteler: +category

2013-06-02T19:48:55Z

+category

← Older revision		Revision as of 19:48, 2 June 2013
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	[[Category:FAQ]]		[[Category: FAQ]]
	[[Category: massive data analysis]]		[[Category: massive data analysis]]
			[[Category: Import]]

⚠️Wenzeslaus at 14:13, 11 February 2013

2013-02-11T14:13:35Z

← Older revision		Revision as of 14:13, 11 February 2013
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	v.in.ogr ... snap=1e-7		v.in.ogr ... snap=1e-7

	Important: You should use the improved [http://grass.osgeo.org/download/software/ GRASS GIS 7] for the import of large vector data, because the import may not work with GRASS GIS 6.		Important: You should use the improved [http://grass.osgeo.org/download/software/ GRASS GIS 7] for the import of large vector data, because the import may not work with GRASS GIS 6. To be able to use imported data in GRASS GIS 6, just rebuild vector topology (e.g., {{cmd\|v.build}}).


	[[Category:FAQ]]		[[Category:FAQ]]
	[[Category: massive data analysis]]		[[Category: massive data analysis]]

Neteler: wording, +download url

2013-02-11T12:53:48Z

wording, +download url

← Older revision		Revision as of 12:53, 11 February 2013
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	'''Q:''' How do I import very large data in GRASS? I.e. from [http://www.gadm.org/ GADM] ~~<br\>~~		'''Q:''' How do I import very large data into GRASS GIS? I.e. from [http://www.gadm.org/ GADM]
	'''A:''' In contrast to GADM v1, GADM v2 contains a lot of floating point representation errors in the coordinates, most probably created by the software used to create GADM v2. You need to perform additional cleaning with snapping to a very small threshold, i.e.

	v.in.~~ogr snap=1e-7~~		'''A:''' In contrast to the older GADM v1, GADM v2 contains a lot of ''floating point representation errors'' in the coordinates, most probably caused by the software used to create GADM v2. You need to perform additional cleaning with snapping to a very small threshold, i.e.

	~~And you~~ should use GRASS 7 for the import of large vector data, because the import may not work with GRASS 6.		v.in.ogr ... snap=1e-7

			Important: You should use the improved [http://grass.osgeo.org/download/software/ GRASS GIS 7] for the import of large vector data, because the import may not work with GRASS GIS 6.


	[[Category:FAQ]]		[[Category:FAQ]]
	[[Category: massive data analysis]]		[[Category: massive data analysis]]

⚠️Madi at 12:46, 11 February 2013

2013-02-11T12:46:45Z

← Older revision		Revision as of 12:46, 11 February 2013
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	'''Q:''' How do I import very large data in GRASS? I.e. from [http://www.gadm.org/ GADM] <br\>		'''Q:''' How do I import very large data in GRASS? I.e. from [http://www.gadm.org/ GADM] <br\>
	'''A:''' In contrast to GADM v1, GADM v2 contains a lot of floating point representation errors in the coordinates, most probably created by the software used to create GADM v2. You need to perform additional cleaning with snapping to a very small threshold, i.e. v.in.ogr snap=1e-7. And you should use GRASS 7 for the import of large vector data, because the import may not work with GRASS 6.		'''A:''' In contrast to GADM v1, GADM v2 contains a lot of floating point representation errors in the coordinates, most probably created by the software used to create GADM v2. You need to perform additional cleaning with snapping to a very small threshold, i.e.

			v.in.ogr snap=1e-7

			And you should use GRASS 7 for the import of large vector data, because the import may not work with GRASS 6.


	[[Category:FAQ]]		[[Category:FAQ]]
	[[Category: massive data analysis]]		[[Category: massive data analysis]]

⚠️Madi: Created page with "'''Q:''' How do I import very large data in GRASS? I.e. from [http://www.gadm.org/ GADM] '''A:''' In contrast to GADM v1, GADM v2 contains a lot of floating point repres..."

2013-02-11T12:45:11Z

Created page with "'''Q:''' How do I import very large data in GRASS? I.e. from [http://www.gadm.org/ GADM] <br\> '''A:''' In contrast to GADM v1, GADM v2 contains a lot of floating point repres..."

New page

'''Q:''' How do I import very large data in GRASS? I.e. from [http://www.gadm.org/ GADM] <br\>
'''A:''' In contrast to GADM v1, GADM v2 contains a lot of floating point representation errors in the coordinates, most probably created by the software used to create GADM v2. You need to perform additional cleaning with snapping to a very small threshold, i.e. v.in.ogr snap=1e-7. And you should use GRASS 7 for the import of large vector data, because the import may not work with GRASS 6.

[[Category:FAQ]]
[[Category: massive data analysis]]