GIS to GRASS command translation - Revision history

⚠️Wenzeslaus: content was obsolete, redirect to closest page content-wise (alternative would be intention-wise which is GRASS migration hints)

2015-08-22T14:59:47Z

content was obsolete, redirect to closest page content-wise (alternative would be intention-wise which is GRASS migration hints)

← Older revision		Revision as of 14:59, 22 August 2015
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	~~==Translation Quick Reference Table==~~		#REDIRECT [[GRASS GIS for ArcGIS users]]
	~~{\| border="1"~~
	~~! GIS Software/Module !! GIS command/feature !! GRASS command(s) !! [[~~#~~Notes on discrepancies\|Discrepancies*]]~~
	\|-
	~~\| ESRI ARC-INFO (GRID) \|\|~~ [[~~#GRID operators\|GRID operators]] \|\| r.mapcalc \|\|~~
	\|-
	~~\| ESRI ARC-INFO (ARC) \|\| [[#LATTICESPOT\|LATTICESPOT]] \|\| v.what.rast \|\| Major~~
	\|}

	~~<small>~~
	~~=====Notes on discrepancies=====~~
	Clever GRASS users should be able to perfectly replicate commands from other software packages, either through coding or by adding new lines to the GRASS translation commands listed below. Over time, discrepancies listed below should not exist as new ideas/code are added, but until then we rank the degree of discrepancy as follows:
	* None: GRASS command(s) in the Translation Discussion should perfectly replicate the output of the GIS software command/feature.
	* Minor: GRASS command(s) in the Translation Discussion should perfectly replicate the output of the GIS software command/feature with minor database/mapcalc post-processing of the outputs, or GRASS command(s) listed do not cover all possible options available from the GIS software/feature.
	* Major: While basic functionality is analagous between the GIS software and GRASS ~~commands listed, significant algorithmic differences exit that will result in different outputs.~~
	* Missing: The GIS ~~software has a feature that is essentially missing/nonexistant in GRASS GIS.~~
	~~</small>~~

	~~==Translation Discussion==~~
	~~===ESRI ARC-INFO===~~
	~~====GRID operators====~~
	~~{\| border="1"~~
	~~! GIS command/feature !! GRASS command(s)~~
	\|-
	~~\| <outfile>=<infile1><operator><infile2> \|\| r.mapcalc <outfile>="<infile1>"<operator>"<infile2>"~~
	\|}


	~~r.mapcalc and GRID operations are similar in how they are both called. Symbols used~~ for ~~operators, however, do differ in certain cases between GRID and GRASS:~~


	~~{\| border="1"~~
	~~! GRID operator !! Description of operator !! Precendence !! r.mapcalc operator~~
	\|-
	~~!Arithmetic:~~
	\|-
	~~\| - \|\| unary minus \|\| 12 \|\|~~
	\|-
	~~\| mod \|\| modulus \|\| 11 \|\| %~~
	\|-
	\| * \|\| multiplication \|\| 11 \|\| *
	\|-
	~~\| / \|\| division \|\| 11 \|\| /~~
	\|-
	~~\| div \|\| floating point division \|\| 11 \|\| /~~
	\|-
	~~\| + \|\| addition \|\| 10 \|\| +~~
	\|-
	~~\| - \|\| subtracts \|\| 10 \|\| -~~
	\|}


	~~====LATTICESPOT====~~
	~~{\| border="1"~~
	~~! GIS command/feature !! GRASS command(s)~~
	\|-
	~~\| LATTICESPOT <in_lattice> <in_cover> {spot_item} {z_factor} \|\| v.what.rast vector=<in_cover> raster=<in_lattice> layer=layer column={spot_item}~~
	\|}

	~~Discrepancies:~~
	*Minor:
	**{spot_item} defaults to "SPOT" for LATTICESPOT, but must be explicitly defined for v.what.rast.
	**{z_factor} must be applied to the GRASS vector database after-the-fact.
	*Major:
	**LATTICESPOT performs a bilinear interpolation to assign raster values to the output vector, whereas v.what.rast uses nearest neighbor.

	~~[[Category:Documentation]]~~
	~~[[Category:FAQ~~]]

⚠️Landa: +category doc/faq

2008-04-13T21:39:08Z

+category doc/faq

← Older revision		Revision as of 21:39, 13 April 2008
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	*Major:		*Major:
	**LATTICESPOT performs a bilinear interpolation to assign raster values to the output vector, whereas v.what.rast uses nearest neighbor.		**LATTICESPOT performs a bilinear interpolation to assign raster values to the output vector, whereas v.what.rast uses nearest neighbor.

			[[Category:Documentation]]
			[[Category:FAQ]]

⚠️Jgrn307: /* Translation Discussion */

2006-06-20T01:21:31Z

Translation Discussion

← Older revision		Revision as of 01:21, 20 June 2006
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	\| - \|\| subtracts \|\| 10 \|\| -		\| - \|\| subtracts \|\| 10 \|\| -
	\|}		\|}


	====LATTICESPOT====		====LATTICESPOT====

⚠️Jgrn307: /* GRID operators */

2006-06-20T01:17:51Z

GRID operators

← Older revision		Revision as of 01:17, 20 June 2006
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	! GIS command/feature !! GRASS command(s)		! GIS command/feature !! GRASS command(s)
	\|-		\|-
	\| <outfile>=<infile1><operator><infile2> \|\| <outfile>="<infile1>"<operator>"<infile2>"		\| <outfile>=<infile1><operator><infile2> \|\| r.mapcalc <outfile>="<infile1>"<operator>"<infile2>"
	\|}		\|}

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	\| - \|\| subtracts \|\| 10 \|\| -		\| - \|\| subtracts \|\| 10 \|\| -
	\|}		\|}



	====LATTICESPOT====		====LATTICESPOT====

⚠️Jgrn307: /* Translation Quick Reference Table */

2006-06-20T01:12:20Z

Translation Quick Reference Table

← Older revision		Revision as of 01:12, 20 June 2006
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	! GIS Software/Module !! GIS command/feature !! GRASS command(s) !! [[#Notes on discrepancies\|Discrepancies*]]		! GIS Software/Module !! GIS command/feature !! GRASS command(s) !! [[#Notes on discrepancies\|Discrepancies*]]
	\|-		\|-
	\| ESRI ARC-INFO (GRID) \|\| [[#GRID operators\|GRID operators]] \|\| r.mapcalc \|\| ~~None~~		\| ESRI ARC-INFO (GRID) \|\| [[#GRID operators\|GRID operators]] \|\| r.mapcalc \|\|
	\|-		\|-
	\| ESRI ARC-INFO (ARC) \|\| [[#LATTICESPOT\|LATTICESPOT]] \|\| v.what.rast \|\| Major		\| ESRI ARC-INFO (ARC) \|\| [[#LATTICESPOT\|LATTICESPOT]] \|\| v.what.rast \|\| Major

⚠️Jgrn307: /* LATTICESPOT */

2006-06-20T01:11:45Z

LATTICESPOT

← Older revision		Revision as of 01:11, 20 June 2006
Line 49:		Line 49:
	\| - \|\| subtracts \|\| 10 \|\| -		\| - \|\| subtracts \|\| 10 \|\| -
	\|}		\|}



	====LATTICESPOT====		====LATTICESPOT====

⚠️Jgrn307: /* GRID operators */

2006-06-20T01:10:53Z

GRID operators

← Older revision		Revision as of 01:10, 20 June 2006
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	===ESRI ARC-INFO===		===ESRI ARC-INFO===
	====GRID operators====		====GRID operators====
			{\| border="1"
			! GIS command/feature !! GRASS command(s)
			\|-
			\| <outfile>=<infile1><operator><infile2> \|\| <outfile>="<infile1>"<operator>"<infile2>"
			\|}


			r.mapcalc and GRID operations are similar in how they are both called. Symbols used for operators, however, do differ in certain cases between GRID and GRASS:


	{\| border="1"		{\| border="1"
	! GRID operator !! Description of operator !! Precendence !! r.mapcalc operator		! GRID operator !! Description of operator !! Precendence !! r.mapcalc operator
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	\| - \|\| subtracts \|\| 10 \|\| -		\| - \|\| subtracts \|\| 10 \|\| -
	\|}		\|}


	====LATTICESPOT====		====LATTICESPOT====

⚠️Jgrn307 at 00:43, 20 June 2006

2006-06-20T00:43:58Z

← Older revision		Revision as of 00:43, 20 June 2006
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	! GIS Software/Module !! GIS command/feature !! GRASS command(s) !! [[#Notes on discrepancies\|Discrepancies*]]		! GIS Software/Module !! GIS command/feature !! GRASS command(s) !! [[#Notes on discrepancies\|Discrepancies*]]
	\|-		\|-
	\| ESRI ARC-INFO (GRID) \|\| [[#~~GRID_Operators~~\|~~GRIDoperators~~]] \|\| r.mapcalc \|\| None		\| ESRI ARC-INFO (GRID) \|\| [[#GRID operators\|GRID operators]] \|\| r.mapcalc \|\| None
	\|-		\|-
	\| ESRI ARC-INFO (ARC) \|\| [[#LATTICESPOT\|LATTICESPOT]] \|\| v.what.rast \|\| Major		\| ESRI ARC-INFO (ARC) \|\| [[#LATTICESPOT\|LATTICESPOT]] \|\| v.what.rast \|\| Major

⚠️Jgrn307 at 00:43, 20 June 2006

2006-06-20T00:43:23Z

← Older revision		Revision as of 00:43, 20 June 2006
Line 3:		Line 3:
	! GIS Software/Module !! GIS command/feature !! GRASS command(s) !! [[#Notes on discrepancies\|Discrepancies*]]		! GIS Software/Module !! GIS command/feature !! GRASS command(s) !! [[#Notes on discrepancies\|Discrepancies*]]
	\|-		\|-
	\| ESRI ARC-INFO (GRID) \|\| [[#~~GRID Operators~~\|GRIDoperators]] \|\| r.mapcalc \|\| None		\| ESRI ARC-INFO (GRID) \|\| [[#GRID_Operators\|GRIDoperators]] \|\| r.mapcalc \|\| None
	\|-		\|-
	\| ESRI ARC-INFO (ARC) \|\| [[#LATTICESPOT\|LATTICESPOT]] \|\| v.what.rast \|\| Major		\| ESRI ARC-INFO (ARC) \|\| [[#LATTICESPOT\|LATTICESPOT]] \|\| v.what.rast \|\| Major

⚠️Jgrn307: /* Translation Quick Reference Table */

2006-06-20T00:43:03Z

Translation Quick Reference Table

← Older revision		Revision as of 00:43, 20 June 2006
Line 3:		Line 3:
	! GIS Software/Module !! GIS command/feature !! GRASS command(s) !! [[#Notes on discrepancies\|Discrepancies*]]		! GIS Software/Module !! GIS command/feature !! GRASS command(s) !! [[#Notes on discrepancies\|Discrepancies*]]
	\|-		\|-
	\| ESRI ARC-INFO/ARC \|\| [[#LATTICESPOT\|LATTICESPOT]] \|\| v.what.rast \|\| Major		\| ESRI ARC-INFO (GRID) \|\| [[#GRID Operators\|GRIDoperators]] \|\| r.mapcalc \|\| None
			\|-
			\| ESRI ARC-INFO (ARC) \|\| [[#LATTICESPOT\|LATTICESPOT]] \|\| v.what.rast \|\| Major
	\|}		\|}