[processing] modified saga ids description and fixed example script bug

Author: volaya

python/plugins/processing/saga/description/InverseDistanceWeighted.txt renamed to python/plugins/processing/saga/description/2.0.8_InverseDistanceWeighted.txt

@@ -0,0 +1,16 @@
+Inverse Distance Weighted
+grid_gridding
+ParameterVector|SHAPES|Points|0|False
+ParameterTableField|FIELD|Attribute|SHAPES|-1|False
+ParameterSelection|TARGET|Target Grid|[0] user defined
+ParameterSelection|WEIGHTING|Distance Weighting|[0] inverse distance to a power;[1] linearly decreasing within search radius;[2] exponential weighting scheme;[3] gaussian weighting scheme
+ParameterNumber|WEIGHT_POWER|Inverse Distance Power|0.0|None|2
+ParameterNumber|WEIGHT_BANDWIDTH|Exponential and Gaussian Weighting Bandwidth|0.0|None|1
+ParameterSelection|SEARCH_RANGE|Search Range|[0] search radius (local);[1] no search radius (global)
+ParameterNumber|SEARCH_RADIUS|Search Radius|None|None|100.0
+ParameterSelection|SEARCH_DIRECTION|Search Mode|[0] all directions;[1] quadrants
+ParameterSelection|SEARCH_POINTS_ALL|Number of Points|[0] maximum number of nearest points;[1] all points
+ParameterNumber|SEARCH_POINTS_MAX|Maximum Number of Points|None|None|10
+Extent USER_XMIN USER_XMAX USER_YMIN USER_YMAX
+ParameterNumber|USER_SIZE|Cellsize|None|None|100.0
+OutputRaster|USER_GRID|Grid

python/plugins/processing/saga/description/2.1_InverseDistanceWeighted.txt

@@ -9,4 +9,4 @@
 width = (input.extent().xMaximum() - input.extent().xMinimum())
 cellsize = width / numpolygons
 height = (input.extent().yMaximum() - input.extent().yMinimum())
-processing.runalg("qgis:creategrid", cellsize, height, width, height, centerx, centery, 1, polygons)
+processing.runalg("qgis:creategrid", cellsize, height, width, height, centerx, centery, 1, input.crs(), polygons)