<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
Z factor (vertical exaggeration)
[number]<put parameter description here>
Default: 1.0
Scale (ratio of vert. units to horiz.)
[number]<put parameter description here>
Default: 1.0
Azimuth of the light
[number]<put parameter description here>
Default: 315.0
Altitude of the light
[number]<put parameter description here>
Default: 45.0
Output file
[raster]processing.runalg('gdalogr:hillshade', input, band, compute_edges, zevenbergen, z_factor, scale, azimuth, altitude, output)