French Forest Sector Model (FFSM++)

Laboratoire d'Economie Forestière - LEF - Nancy, France

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en:doc:gisdata

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en:doc:gisdata [2015/07/01 10:17]
Antonello Lobianco [DTM (Digital Terrain Model)]
en:doc:gisdata [2018/06/18 16:45] (current)
Line 32: Line 32:
   * Save the second shapefile "save as shapefile"​ and change the projection field option in "​project projections"​.   * Save the second shapefile "save as shapefile"​ and change the projection field option in "​project projections"​.
    
-=== Clip a shapefile ===+==== Clip a shapefile ​====
 In order to e.g. clip the CLC06 shapefile only on France borders, the command in QGis is:\\  In order to e.g. clip the CLC06 shapefile only on France borders, the command in QGis is:\\ 
 Vector → Geo-processing tools → Intersection Vector → Geo-processing tools → Intersection
  
-=== Map dissolve ===+==== Map dissolve ​====
 In order to dissolve a shapefile (e.g. to dissolve selected nuts2 for metro France in a single nuts1 map): \\ In order to dissolve a shapefile (e.g. to dissolve selected nuts2 for metro France in a single nuts1 map): \\
 Vector → Geo-processing tools → Dissolve\\ Vector → Geo-processing tools → Dissolve\\
 To add to the newly created map the correct area column (in square meters): \\ To add to the newly created map the correct area column (in square meters): \\
 Vector → Geometry tools → Add or delete geometric columns Vector → Geometry tools → Add or delete geometric columns
 +
 +==== Report stats on a raster using a second raster as a base ====
 +Let's say in grass we have a raster layer "​regionId"​ (integer) and a raster layer "​forestArea",​ where we store the ha of forest within the pixel (float).\\
 +How can we get a table summing up the forest area by region ? For example with this:
 +    r.univar -t map=mixedBC zones=nut_l2_inra2016 separator=comma output=mixedBC_by_region.csv
 +
  
 ===== DTM (Digital Terrain Model) ===== ===== DTM (Digital Terrain Model) =====
en/doc/gisdata.txt · Last modified: 2018/06/18 16:45 (external edit)