Changes between Version 14 and Version 15 of Grass8/NewFeatures80

Timestamp:

12/12/21 14:51:34 (3 years ago)

Author:

veroandreo

Comment:

more details - wip

Grass8/NewFeatures80

@@ -58 +58 @@
 See ... TODO
 
-||[[Image(wiki:Grass8/NewFeatures80/first-time_user_world.png, align=center, 300px)]]
-||''New startup and dark theme support''
+||[[Image(wiki:Grass8/NewFeatures80:first-time_user_world.png, align=center, 300px)]]
+||''New first time user startup and dark theme support''
 
 == Modules (commands) ==
@@ -70 +70 @@
 
 === Raster modules ===
- 
+
+A new class of metadata can now be added to raster maps. We called it semantic labels. Examples of semantic labels are satellite bands, dataset names in remote sensing products, or whatever the user wants to use to identify raster maps. This new feature brings in a series of and advantages. Users can register time series of satellite images and then select which bands or semantic labels to work with, for example, estimate NDVI from a Sentinel 2 time series:
+
+`t.rast.mapcalc inputs=test.S2_8,test.S2_4 output=ndvi basename=ndvi expression="float(test.S2_8 - test.S2_4) / (test.S2_8 + test.S2_4)"`
+
+The other great advantage is that now the signature files will include these semantic labels, and therefore, signature files of one imagery or raster group can be used to classify a different group with identical semantic labels.
+
+New modules:
+ * G80:r.semantic.label: manages semantic label information assigned to a single raster map or to a list of raster maps
+
+A number of modules in the raster family received significant modifications. Here the most relevant:
  * G80:r.geomorphon: Add geomorphon profiling feature and two zenith/nadir comparison modes. Remove the multires mode, which was broken. Refine documentation and code style.
  * G80:...
@@ -82 +92 @@
 All raster classification modules now generate signature files with embedded semantic labels. This allows to apply signature file from one imagery scene to any number of other scenes as long as they consist of same bands (as identified by their semantic labels).
 
+ * G80:i.band.library
  * G80:...
+
+||[[Image()]]
+|| ''New enhanced classification workflow''
 
 === Temporal GIS modules ===