Lowering error using pyDEM dem processor

问题

Executing this script in Spyder :

import os
from pydem.dem_processing import DEMProcessor
filename__geotiff = 'D:\temp\CH_DTED_l0.tif'
if os.path.exists(filename__geotiff):
  dem_proc = DEMProcessor(filename__geotiff)
mag, aspect = dem_proc.calc_slopes_directions()

Gets me the following error :

Failed at object (object mode backend)

slc0.8

File "........\Programs\Anaconda\lib\site-packages\pydem\dem_processing.py", line 2176

[1] During: lowering "$1309 = call $1308(ang_adj, dX, dY, data, direction, facets, mag, shp, slc0.8)" at D:\Programs\Anaconda\lib\site-packages\pydem\dem_processing.py (2176)

I'm using spyder launched in an Anaconda virtual environment with gdal, numba and pyDEM installed.

来源：https://stackoverflow.com/questions/39510509/lowering-error-using-pydem-dem-processor