<put algorithm description here>
<put parameter description here>
Default: 0.0
<put parameter description here>
Default: 0.0
processing.runalg('saga:vegetationindexdistancebased', nir, red, slope, intercept, pvi, pvi1, pvi2, pvi3)
<put algorithm description here>
processing.runalg('saga:vegetationindexslopebased', nir, red, ndvi, ratio, tvi, ctvi, ttvi, nratio)