<put algortithm description here>
Source Grid
[raster]Buffer distance
[number]<put parameter description here>
Default: 500.0
Equidistance
[number]<put parameter description here>
Default: 100.0
Distance Grid
[raster]Allocation Grid
[raster]Buffer Grid
[raster]processing.runalg('saga:gridproximitybuffer', source, dist, ival, distance, alloc, buffer)