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Links contour map generation with ODM DEM model #1

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Links contour map generation with ODM DEM model #1

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39 changes: 8 additions & 31 deletions contrib/grass/odm_grass.py
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,6 @@
import grass.script.core
import grass.script.setup

vlidarName = 'odm_vlidar'
rsurfName = 'odm_rsurf'
contourName = 'odm_contour'
orthophotoName = 'odm_orthophoto'
Expand Down Expand Up @@ -65,47 +64,25 @@ def main():
gscript.run_command('g.region', flags='s', n=n, s=s, e=e, w=w, res=0.01,
res3=0.01, overwrite=overwrite)

dem(projectHome)
contour(projectHome)
relief(projectHome)

os.remove(gisrc)


def dem(projectHome):
"""
Creates a DEM in GeoTIFF format.
NB: this is a data raster, not an RGBA raster
and so is normally only readable by GIS and not image software.
"""
print 'Creating DEM'

step = 0.5
gscript.run_command('v.in.lidar', flags='beo',
input=projectHome +
'/odm_georeferencing/odm_georeferenced_model.ply.las',
output=vlidarName, overwrite=overwrite)

gscript.run_command('v.surf.bspline', input=vlidarName,
raster_output=rsurfName,
ew_step=step, ns_step=step, method='bicubic',
memory=4096, overwrite=overwrite)

gscript.run_command('r.out.gdal', flags='cfm', input=rsurfName,
output=projectHome+'/odm_georeferencing/odm_dem.tif',
format='GTiff', type='Float32',
createopt='TILED=yes,COMPRESS=DEFLATE,PREDICTOR=2,' +
'BLOCKXSIZE=512,BLOCKYSIZE=512', nodata=0,
overwrite=overwrite)


def contour(projectHome):
"""
Creates a contour map.
Creates a contour map based on the ODM project DEM model.
"""
print 'Creating contour map'

step = 0.25

gscript.run_command('r.in.gdal', flags='o',
input=projectHome+'/odm_georeferencing/odm_georeferencing_model_dem.tif',
output=rsurfName, memory=2047,
overwrite=overwrite)

gscript.run_command('r.contour', input=rsurfName, output=contourName,
step=step, overwrite=overwrite)

Expand All @@ -122,7 +99,7 @@ def relief(projectHome):
"""
print 'Creating relief map'

gscript.run_command('r.in.gdal', flags='e',
gscript.run_command('r.in.gdal', flags='o',
input=projectHome+'/odm_orthophoto/odm_orthophoto.tif',
output=orthophotoName, memory=2047,
overwrite=overwrite)
Expand Down