Difference between revisions of "GRASS GIS Standardized Sample Datasets"

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(create placeholder for now, should contain a list of datasets (not all of them suitable for main site, certainly not now), explanation of the concept, example commands and outputs for different datasets, its not clear where should be a list of maps)
 
(→‎Example: add NC and Piemonte examples for r.slope.aspect and r.relief)
Line 5: Line 5:
== List of datasets ==
== List of datasets ==


== Example ==
== Examples ==
 
=== Computing slope and aspect ===
 
Compute slope, aspect and profile curvature of the terrain:
 
g.region raster=elevation
r.slope.aspect elevation=elevation slope=slope aspect=aspect pcurvature=profile_curvature
 
<!--
Piemonte display region:
north:      5136489.9425
south:      5035337.95613
west:      321279.974525
east:      448051.241282
rows=458
cols=574
 
NC display region:
north:      228500
south:      215000
west:      630000
east:      645000
rows=458
cols=574
-->
 
<gallery mode=packed>
File:std_dataset_nc_aspect.png|Aspect (North Carolina, USA)
File:std_dataset_nc_slope.png|Slope (North Carolina, USA)
File:std_dataset_nc_profile_curvature.png|Profile curvature (North Carolina, USA)
File:std_dataset_piemonte_aspect.png|Aspect (Piemonte, Italy)
File:std_dataset_piemonte_slope.png|Slope (Piemonte, Italy)
File:std_dataset_piemonte_profile_curvature.png|Profile curvature (Piemonte, Italy)
</gallery>
 
=== Visualizing shaded relief ===
 
Visualize digital elevation model with shaded relief:
 
g.region raster=elevation
r.relief input=elevation output=shade
d.shade shade=shade color=elevation
 
<gallery mode=packed>
File:std_dataset_nc_shaded_elevation.png|North Carolina, USA
File:std_dataset_piemonte_shaded_elevation.png|Piemonte, Italy
</gallery>

Revision as of 17:47, 25 March 2015

See Trac wiki page for the development of the dataset.

List of datasets

Examples

Computing slope and aspect

Compute slope, aspect and profile curvature of the terrain:

g.region raster=elevation
r.slope.aspect elevation=elevation slope=slope aspect=aspect pcurvature=profile_curvature


Visualizing shaded relief

Visualize digital elevation model with shaded relief:

g.region raster=elevation
r.relief input=elevation output=shade
d.shade shade=shade color=elevation