GRASS-Wiki - User contributions [en]

GIS to GRASS command translation

2006-06-20T01:21:31Z

⚠️Jgrn307: /* Translation Discussion */

==Translation Quick Reference Table==
{| 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
|}


=====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.


==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.

GIS to GRASS command translation

2006-06-20T01:17:51Z

⚠️Jgrn307: /* GRID operators */

GIS to GRASS command translation

2006-06-20T01:12:20Z

⚠️Jgrn307: /* Translation Quick Reference Table */

==Translation Quick Reference Table==
{| 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
|}


=====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.


==Translation Discussion==
===ESRI ARC-INFO===
====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"
! 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.

GIS to GRASS command translation

2006-06-20T01:11:45Z

⚠️Jgrn307: /* LATTICESPOT */

==Translation Quick Reference Table==
{| 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 || None
|-
| ESRI ARC-INFO (ARC) || [[#LATTICESPOT|LATTICESPOT]] || v.what.rast || Major
|}


=====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.


==Translation Discussion==
===ESRI ARC-INFO===
====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"
! 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.

GIS to GRASS command translation

2006-06-20T01:10:53Z

⚠️Jgrn307: /* GRID operators */

==Translation Quick Reference Table==
{| 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 || None
|-
| ESRI ARC-INFO (ARC) || [[#LATTICESPOT|LATTICESPOT]] || v.what.rast || Major
|}


=====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.


==Translation Discussion==
===ESRI ARC-INFO===
====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"
! 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.

GIS to GRASS command translation

2006-06-20T00:43:58Z

⚠️Jgrn307:

==Translation Quick Reference Table==
{| 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 || None
|-
| ESRI ARC-INFO (ARC) || [[#LATTICESPOT|LATTICESPOT]] || v.what.rast || Major
|}


=====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.


==Translation Discussion==
===ESRI ARC-INFO===
====GRID operators====
{| 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.

GIS to GRASS command translation

2006-06-20T00:43:23Z

⚠️Jgrn307:

==Translation Quick Reference Table==
{| border="1"
! 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 (ARC) || [[#LATTICESPOT|LATTICESPOT]] || v.what.rast || Major
|}


=====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.


==Translation Discussion==
===ESRI ARC-INFO===
====GRID operators====
{| 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.

GIS to GRASS command translation

2006-06-20T00:43:03Z

⚠️Jgrn307: /* Translation Quick Reference Table */

==Translation Quick Reference Table==
{| border="1"
! 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 (ARC) || [[#LATTICESPOT|LATTICESPOT]] || v.what.rast || Major
|}


=====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.


==Translation Discussion==
===ESRI ARC-INFO===
====GRID operators====
{| 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.

GIS to GRASS command translation

2006-06-20T00:41:19Z

⚠️Jgrn307: /* ESRI ARC-INFO */

==Translation Quick Reference Table==
{| border="1"
! GIS Software/Module !! GIS command/feature !! GRASS command(s) !! [[#Notes on discrepancies|Discrepancies*]]
|-
| ESRI ARC-INFO/ARC || [[#LATTICESPOT|LATTICESPOT]] || v.what.rast || Major
|}


=====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.


==Translation Discussion==
===ESRI ARC-INFO===
====GRID operators====
{| 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.

GIS to GRASS command translation

2006-06-20T00:06:57Z

⚠️Jgrn307: /* LATTICESPOT */

==Translation Quick Reference Table==
{| border="1"
! GIS Software/Module !! GIS command/feature !! GRASS command(s) !! [[#Notes on discrepancies|Discrepancies*]]
|-
| ESRI ARC-INFO/ARC || [[#LATTICESPOT|LATTICESPOT]] || v.what.rast || Major
|}


=====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.


==Translation Discussion==
===ESRI ARC-INFO===
====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.

GIS to GRASS command translation

2006-06-20T00:04:34Z

⚠️Jgrn307: /* Translation Quick Reference Table */

==Translation Quick Reference Table==
{| border="1"
! GIS Software/Module !! GIS command/feature !! GRASS command(s) !! [[#Notes on discrepancies|Discrepancies*]]
|-
| ESRI ARC-INFO/ARC || [[#LATTICESPOT|LATTICESPOT]] || v.what.rast || Major
|}


=====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.


==Translation Discussion==
===ESRI ARC-INFO===
====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:
*{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.
*LATTICESPOT performs a bilinear interpolation to assign raster values to the output vector, whereas v.what.rast uses nearest neighbor.

GIS to GRASS command translation

2006-06-19T23:51:04Z

⚠️Jgrn307: /* Translation Quick Reference Table */

==Translation Quick Reference Table==
{| border="1"
! GIS Software/Module !! GIS command/feature !! GRASS command(s) !! [[#Notes on discrepancies|Discrepancies*]]
|-
| ESRI ARC-INFO/ARC || [[#LATTICESPOT|LATTICESPOT]] || v.what.rast || Major
|}

==Translation Discussion==
===ESRI ARC-INFO===
====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:
*{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.
*LATTICESPOT performs a bilinear interpolation to assign raster values to the output vector, whereas v.what.rast uses nearest neighbor.

GRASS Help

2006-06-19T23:10:23Z

⚠️Jgrn307: /* Migration from other GIS Software */

== Getting Started ==

=== Installation ===

* Covered in the [[Installation Guide]]

=== First Day Documentation ===
* [http://grass.ibiblio.org/grass61/manuals/html61_user/helptext.html "''GRASS Quickstart''"] by M. Neteler (in the GRASS help pages)

* [http://wwwamb.bologna.enea.it/forgrass/documents/Grass-6-Visual-Tutorial.pdf "''Visual Tutorial for GRASS 6''"] by L. Moretti (for non-UNIX people, GUI)

* [[Gis Concepts|Basic GIS concepts]] and how GRASS implements them

* [http://mpa.itc.it/markus/osg05/ "''GRASS 6 in a nutshell''"] by M. Neteler (short tutorial)

* [http://www.gdf-hannover.de/lit_html/grass60_v1.2_en/index.html "''An introduction to the practical use of the Free Geographical Information System GRASS 6.0''"] by GDF Hannover

* [http://www.gdf-hannover.de/media.php?id=0&lg=en More tutorials] from GDF Hannover

* [http://mpa.itc.it/grassbook2 "''Open Source GIS: A GRASS GIS Approach.'' 2nd ed."] by M. Neteler and H. Mitasova (Book; focus is on GRASS 5, but all chapters still valid except vector/sites)

* GRASS module [http://grass.ibiblio.org/grass61/manuals/html61_user/index.html reference manuals]

* More GRASS [http://grass.ibiblio.org/gdp/index.php documentation and tutorials]

=== Sample Dataset ===

* [http://grass.ibiblio.org/download/data6.php Spearfish County, ND] (Mount Rushmore)
* [http://grass.ibiblio.org/download/data.php More sample data]

=== Migration from other GIS Software ===

* [[GRASS_migration_hints|GRASS migration hints]]
* [[GIS to GRASS command translation|GIS Software to GRASS command translation table and discussion]]

== Further Reading ==

* [[Documents|Full GRASS Documentation]]

== Misc. Help ==

* [[GRASS FAQ]] (see also: [[GRASS 6 Tutorial]])
* [[Tips and Tricks]]
* [[Compile and install GRASS and QGIS with GDAL/OGR Plugin]]
* [[How to interpolate point value using kriging method with R and GRASS 6]]

--------
* Wiki [[Help]] (how to edit pages after registration)

GIS to GRASS command translation

2006-06-19T23:06:44Z

⚠️Jgrn307: /* Discussion */

==Translation Quick Reference Table==
{| border="1"
! GIS Software/Module !! GIS command/feature !! GRASS command(s)
|-
| ESRI ARC-INFO/ARC || [[#LATTICESPOT|LATTICESPOT]] || v.what.rast
|}

==Translation Discussion==
===ESRI ARC-INFO===
====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:
*{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.
*LATTICESPOT performs a bilinear interpolation to assign raster values to the output vector, whereas v.what.rast uses nearest neighbor.

GIS to GRASS command translation

2006-06-19T23:05:13Z

⚠️Jgrn307: /* LATTICESPOT */

==Translation Quick Reference Table==
{| border="1"
! GIS Software/Module !! GIS command/feature !! GRASS command(s)
|-
| ESRI ARC-INFO/ARC || [[#LATTICESPOT|LATTICESPOT]] || v.what.rast
|}

==Discussion==
===ESRI ARC-INFO===
====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:
*{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.
*LATTICESPOT performs a bilinear interpolation to assign raster values to the output vector, whereas v.what.rast uses nearest neighbor.

GIS to GRASS command translation

2006-06-19T23:04:40Z

⚠️Jgrn307: /* ARC-INFO */

==Translation Quick Reference Table==
{| border="1"
! GIS Software/Module !! GIS command/feature !! GRASS command(s)
|-
| ESRI ARC-INFO/ARC || [[#LATTICESPOT|LATTICESPOT]] || v.what.rast
|}

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

GIS to GRASS command translation

2006-06-19T22:56:23Z

⚠️Jgrn307:

==Translation Quick Reference Table==
{| border="1"
! GIS Software/Module !! GIS command/feature !! GRASS command(s)
|-
| ESRI ARC-INFO/ARC || [[#LATTICESPOT|LATTICESPOT]] || v.what.rast
|}

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

GIS to GRASS command translation

2006-06-19T22:53:16Z

⚠️Jgrn307: /* Translation Table */

==Translation Table==
{| border="1"
! GIS Software/Module !! GIS command/feature !! GRASS command(s)
|-
| ESRI ARC-INFO/ARC || [[#LATTICESPOT|LATTICESPOT]] || v.what.rast
|}

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

GIS to GRASS command translation

2006-06-19T22:52:47Z

⚠️Jgrn307: /* LATTICESPOT */

==Translation Table==
{| border="1"
! GIS Software/Module !! GIS command/feature !! GRASS command(s)
|-
| ESRI ARC-INFO/ARC || [[#LATTICESPOT|LATTICESPOT]] || v.to.rast
|}

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

GIS to GRASS command translation

2006-06-19T22:43:08Z

⚠️Jgrn307:

GIS to GRASS command translation

2006-06-19T22:42:18Z

⚠️Jgrn307:

GIS Software to GRASS command translation table and discussion

In progress!

{| border="1"
! GIS Software/Module !! GIS command/feature !! GRASS command(s)
|-
| ESRI ARC-INFO/ARC || [[#LATTICESPOT|LATTICESPOT]] || v.to.rast
|}

==Discussion==
===ARC-INFO===
====LATTICESPOT====

GIS to GRASS command translation

2006-06-19T22:35:56Z

⚠️Jgrn307:

GIS Software to GRASS command translation table and discussion

In progress!

{| border="1"
! GIS Software/Module !! GIS command/feature !! GRASS command(s)
|-
| ARCINFO/ARC || LATTICESPOT || v.to.rast
|}

GIS to GRASS command translation

2006-06-19T22:30:29Z

⚠️Jgrn307:

GIS Software to GRASS command translation table and discussion

In progress!

{| border="1"
! GIS Software/Module !! GRASS command(s)
|-
| LATTICESPOT || v.to.rast
|}

GIS to GRASS command translation

2006-06-19T22:30:15Z

⚠️Jgrn307:

GIS Software to GRASS command translation table and discussion

In progress!

{| border="1"
|+ The table's caption
! GIS Software/Module !! GRASS command(s)
|-
| LATTICESPOT || v.to.rast
|}

GIS to GRASS command translation

2006-06-19T22:26:30Z

⚠️Jgrn307:

GIS Software to GRASS command translation table and discussion

In progress!

GRASS migration hints

2006-06-19T22:25:58Z

⚠️Jgrn307:

== Migrating to GRASS ==

Welcome! There is a lot of help on the web and a wealth of expertise available on the mailing lists and via IRC.

== GIS "The GRASS way" ==

=== Interoperability ===
Collaboration with external software is highly encouraged.

* [http://www.gdal.org GDAL/OGR] for Import/Export
* R statistics: GRASS/R interface
* DXF: v.in.dxf, v.out.dxf
* Matlab/Octave: r.in.mat, r.out.mat, v.in.mapgen, v.in.ascii, v.out.ascii
* POVray: r.out.pov, v.out.pov
* VMRL: p.out.vrml
* GMT - Generic Mapping Tools for cartography: r.in.bin, r.out.bin
* Google Earth/KML: v.out.ogr
* VTK (Paraview, etc): r3.out.vtk, r.out.vtk, v.out.vtk
* V5D: r3.in.v5d, r3.out.v5d

=== Portability ===
* All code POSIX C and generic UNIX compatible
* Most code [http://www.mingw.org/ MinGW] compatible for native MS-Windows

=== Scriptability ===
* GRASS is made up of modular tools specifically designed for easy scriptability in any number of common scripting languages
* SWIG interface for direct hooks into higher scripting languages

=== Freedom ===
* [[Gis_Concepts#How_the_Open_Source_software_development_model_works|How the Open Source software development model works]]

== GRASS Concepts ==

* [[Gis_Concepts|GIS concepts]]

== Tips for recent migrants ==

* [[Tips for Arc users|Tips for ArcGIS users]]
* [[GIS to GRASS command translation|GIS Software to GRASS command translation table and discussion]]
* GRASS 4 and 5 users: [[GRASS Module Porting List]] (check here if you don't find a certain command in GRASS 6)

[[Category:Community]]