class Carta:
def __init__(self, filepath, options=None):
self.raster = Raster(filepath)
self.ds = self.raster.ds
self.options = options
def bounds(self):
return self.raster.bounds()
def clip(self, shape):
return CartaArray(self.raster.clip_as_array(shape), self.options)
def band(self):
try:
return self.options.band
except:
return 1
def iter_band_blocks(self):
band = self.ds.GetRasterBand(self.band())
bSize = band.GetBlockSize()[0]
rows = band.YSize
cols = band.XSize
for i in range(0, rows, bSize):
if i + bSize < rows:
numRows = bSize
else:
numRows = rows - i
for j in range(0, cols, bSize):
if j + bSize < cols:
numCols = bSize
else:
numCols = cols - j
block = band.ReadAsArray(j, i, numCols, numRows)
yield(block)
def __init__(self, filepath, options=None):
self.raster = Raster(filepath)
self.ds = self.raster.ds
self.options = options