<put algortithm description here>
Grid
[raster]Minimum Contour Value
[number]<put parameter description here>
Default: 0.0
Maximum Contour Value
[number]<put parameter description here>
Default: 10000.0
Equidistance
[number]<put parameter description here>
Default: 100.0
Contour Lines
[vector]processing.runalg('saga:contourlinesfromgrid', input, zmin, zmax, zstep, contour)