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Mario Chirinos Colunga
GeoSentinel
Commits
5cb902ca
Commit
5cb902ca
authored
Oct 09, 2018
by
Mario Chirinos Colunga
💬
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wkt raster
parent
3569cdd5
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31 additions
and
18 deletions
+31
-18
rasterWkt.py
geosentinel/rasterWkt.py
+31
-18
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geosentinel/rasterWkt.py
View file @
5cb902ca
...
...
@@ -25,27 +25,40 @@ def createLayer(wkt, layerName="wkt"):
feature
=
None
return
layer
#-------------------------------------------------------------------------------
def
getPolygonArray
(
image
,
wkt
):
def
getPolygonArray
(
image
,
wkt
_geom
):
rows
,
cols
,
geotransform
=
image
.
RasterYSize
,
image
.
RasterXSize
,
image
.
GetGeoTransform
()
print
(
rows
,
cols
,
geotransform
)
sr
=
osr
.
SpatialReference
()
sr
.
ImportFromWkt
(
image
.
GetProjection
())
# shapefile
driverShp
=
ogr
.
GetDriverByName
(
"ESRI Shapefile"
)
data_source
=
driverShp
.
CreateDataSource
(
"myShape.shp"
)
#
# shapefile
#
driverShp = ogr.GetDriverByName("ESRI Shapefile")
#
data_source = driverShp.CreateDataSource("myShape.shp")
srs
=
osr
.
SpatialReference
()
srs
.
ImportFromEPSG
(
4326
)
layer
=
data_source
.
CreateLayer
(
"wkt"
,
srs
,
ogr
.
wkbPolygon
)
geometry
=
ogr
.
CreateGeometryFromWkt
(
wkt
)
feature
=
ogr
.
Feature
(
layer
.
GetLayerDefn
())
#
srs = osr.SpatialReference()
#
srs.ImportFromEPSG(4326)
#
layer = data_source.CreateLayer("wkt", srs, ogr.wkbPolygon)
#
geometry = ogr.CreateGeometryFromWkt(wkt)
#
feature = ogr.Feature(layer.GetLayerDefn())
# feature.SetStyleString("PEN(c:#FF0000,w:5px);")
feature
.
SetGeometry
(
geometry
)
layer
.
CreateFeature
(
feature
)
## feature.SetStyleString("PEN(c:#FF0000,w:5px);")
# feature.SetGeometry(geometry)
# layer.CreateFeature(feature)
#
# data_source = None
rast_ogr_ds
=
ogr
.
GetDriverByName
(
'Memory'
)
.
CreateDataSource
(
'wrk'
)
rast_mem_lyr
=
rast_ogr_ds
.
CreateLayer
(
'poly'
,
srs
=
sr
)
feat
=
ogr
.
Feature
(
rast_mem_lyr
.
GetLayerDefn
()
)
feat
.
SetGeometryDirectly
(
ogr
.
Geometry
(
wkt
=
wkt_geom
)
)
rast_mem_lyr
.
CreateFeature
(
feat
)
# Run the algorithm.
# err = gdal.RasterizeLayer( target_ds, [3,2,1], rast_mem_lyr, burn_values = [200,220,240] )
#Set up polygon raster
driverTiff
=
gdal
.
GetDriverByName
(
'GTiff'
)
...
...
@@ -53,18 +66,18 @@ def getPolygonArray(image, wkt):
polygonRaster
.
GetRasterBand
(
1
)
.
SetNoDataValue
(
-
99
)
polygonRaster
.
GetRasterBand
(
1
)
.
WriteArray
(
np
.
zeros
((
rows
,
cols
)))
polygonRaster
.
GetRasterBand
(
1
)
.
FlushCache
()
# polygonRaster.SetGeoTransform(geotransform)
# polygonRaster.SetProjection(sr.ExportToWkt())
polygonRaster
.
SetProjection
(
image
.
GetProjectionRef
())
polygonRaster
.
SetGeoTransform
(
image
.
GetGeoTransform
())
#Burn Polygon
gdal
.
RasterizeLayer
(
polygonRaster
,
[
1
],
laye
r
,
burn_values
=
[
255
])
gdal
.
RasterizeLayer
(
polygonRaster
,
[
1
],
rast_mem_ly
r
,
burn_values
=
[
255
])
polygonRaster
.
GetRasterBand
(
1
)
.
FlushCache
()
np_polygon
=
polygonRaster
.
GetRasterBand
(
1
)
.
ReadAsArray
(
0
,
0
,
cols
,
rows
)
feature
=
None
data_source
=
None
rast_ogr_ds
=
None
#
data_source = None
polygonRaster
=
None
return
np_polygon
...
...
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