johanez

##input_polygons=vector
##ref_x=number 5
##ref_y=number 4
##out_pnt_file=output vector
##out_ln_file=output vector

# Extract polygon nodes from polygons in a vector layer
# creates a point layer for the nodes, and a lien layer with
# with lies to the reference point from the closest node and the following node.
# Both out puts have four attributes:

johanez

##input_polygons=vector
##node_field_name=string

from PyQt4.QtCore import *
from qgis.core import *

# get layer
layer = processing.getObjectFromUri(input_polygons)
progress.setInfo(node_field_name)

johanez

# paralell RF with foreach
#       careful: no confusion, err.rate, mse and rsq components 
#       (as well as the corresponding components in the test compnent, if exist) 
rf_parallel <- function(x, y, ntree=500, ncore=4, ...){
  require(foreach)
  require(randomForest)
  # optional parallel backend
  if (ncore > 1) {
    require(doParallel)
    registerDoParallel(ncore)