Changeset 1919 for inundation/pyvolution/test_data_manager.py

Timestamp:

Oct 14, 2005, 11:26:21 AM (19 years ago)

Author:

ole

Message:

Implemented arbitrary expressions for sww2dem using code from changeset:1916

File:

• inundation/pyvolution/test_data_manager.py (modified) (1 diff)

inundation/pyvolution/test_data_manager.py

@@ -1351 +1351 @@
 
 
+    def test_sww2dem_asc_derived_quantity(self):
+        """Test that sww information can be converted correctly to asc/prj
+        format readable by e.g. ArcView
+
+        This tests the use of derived quantities
+        """
+
+        import time, os
+        from Numeric import array, zeros, allclose, Float, concatenate
+        from Scientific.IO.NetCDF import NetCDFFile
+
+        #Setup
+        self.domain.filename = 'datatest'
+
+        prjfile = self.domain.filename + '_depth.prj'
+        ascfile = self.domain.filename + '_depth.asc'
+        swwfile = self.domain.filename + '.sww'
+
+        self.domain.set_datadir('.')
+        self.domain.format = 'sww'
+        self.domain.smooth = True
+        self.domain.set_quantity('elevation', lambda x,y: -x-y)
+        self.domain.set_quantity('stage', 0.0)
+
+        self.domain.geo_reference = Geo_reference(56,308500,6189000)
+
+
+        sww = get_dataobject(self.domain)
+        sww.store_connectivity()
+        sww.store_timestep('stage')
+
+        self.domain.evolve_to_end(finaltime = 0.01)
+        sww.store_timestep('stage')
+
+        cellsize = 0.25
+        #Check contents
+        #Get NetCDF
+
+        fid = NetCDFFile(sww.filename, 'r')
+
+        # Get the variables
+        x = fid.variables['x'][:]
+        y = fid.variables['y'][:]
+        z = fid.variables['elevation'][:]
+        time = fid.variables['time'][:]
+        stage = fid.variables['stage'][:]
+
+
+        #Export to ascii/prj files
+        sww2dem(self.domain.filename,
+                basename_out = 'datatest_depth',
+                quantity = 'stage - elevation',
+                cellsize = cellsize,
+                reduction = min,
+                format = 'asc',
+                verbose = False)
+
+
+        #Check asc file
+        ascid = open(ascfile)
+        lines = ascid.readlines()
+        ascid.close()
+
+        L = lines[0].strip().split()
+        assert L[0].strip().lower() == 'ncols'
+        assert L[1].strip().lower() == '5'
+
+        L = lines[1].strip().split()
+        assert L[0].strip().lower() == 'nrows'
+        assert L[1].strip().lower() == '5'
+
+        L = lines[2].strip().split()
+        assert L[0].strip().lower() == 'xllcorner'
+        assert allclose(float(L[1].strip().lower()), 308500)
+
+        L = lines[3].strip().split()
+        assert L[0].strip().lower() == 'yllcorner'
+        assert allclose(float(L[1].strip().lower()), 6189000)
+
+        L = lines[4].strip().split()
+        assert L[0].strip().lower() == 'cellsize'
+        assert allclose(float(L[1].strip().lower()), cellsize)
+
+        L = lines[5].strip().split()
+        assert L[0].strip() == 'NODATA_value'
+        assert L[1].strip().lower() == '-9999'
+
+
+        #Check grid values (where applicable)
+        for j in range(5):
+            if j%2 == 0:
+                L = lines[6+j].strip().split()
+                jj = 4-j
+                for i in range(5):
+                    if i%2 == 0:
+                        index = jj/2 + i/2*3
+                        val0 = stage[0,index] - z[index]
+                        val1 = stage[1,index] - z[index]
+
+                        #print i, j, index, ':', L[i], val0, val1
+                        assert allclose(float(L[i]), min(val0, val1))
+
+
+        fid.close()
+
+        #Cleanup
+        os.remove(prjfile)
+        os.remove(ascfile)
+        #os.remove(swwfile)
+
+
+
+
 
     def test_sww2dem_asc_missing_points(self):