<put algortithm description here>
Input layer
[raster]Band number
[number]<put parameter description here>
Default: 1
Compute edges
[boolean]<put parameter description here>
Default: False
Use Zevenbergen&Thorne formula (instead of the Horn's one)
[boolean]<put parameter description here>
Default: False
Return trigonometric angle (instead of azimuth)
[boolean]<put parameter description here>
Default: False
Return o for flat (instead of -9999)
[boolean]<put parameter description here>
Default: False
Output file
[raster]processing.runalg('gdalogr:aspect', input, band, compute_edges, zevenbergen, trig_angle, zero_flat, output)