def test_readasarray(self):
with LibVips.disable_warnings():
vips_ds = VipsDataset(inputfile=self.upsamplingfile)
gdal_ds = Dataset(inputfile=self.upsamplingfile)
# Reading the whole file
self.assertEqual(
vips_ds.ReadAsArray(xoff=0, yoff=0).all(),
gdal_ds.ReadAsArray(xoff=0, yoff=0).all())
# Reading from an offset
vips_data = vips_ds.ReadAsArray(xoff=128, yoff=128)
gdal_data = gdal_ds.ReadAsArray(xoff=128,
yoff=128,
xsize=128,
ysize=128)
self.assertEqual(vips_data.all(), gdal_data.all())
vips_blue = vips_ds.GetRasterBand(3)
gdal_blue = gdal_ds.GetRasterBand(3)
# Reading the whole band
self.assertEqual(
vips_blue.ReadAsArray(xoff=0, yoff=0).all(),
gdal_blue.ReadAsArray(xoff=0, yoff=0).all())
# Reading from an offset
vips_band_data = vips_blue.ReadAsArray(xoff=128, yoff=128)
gdal_band_data = gdal_blue.ReadAsArray(xoff=128,
yoff=128,
win_xsize=128,
win_ysize=128)
self.assertEqual(vips_band_data.all(), gdal_band_data.all())
# Test for errors
self.assertRaises(ValueError,
vips_ds.ReadAsArray,
xoff=0,
yoff=0,
buf_obj=[])
self.assertRaises(ValueError,
vips_blue.ReadAsArray,
xoff=0,
yoff=0,
buf_xsize=1,
buf_ysize=1)
