Add v.kernel algorithm

Author: Médéric RIBREUX

python/plugins/processing/algs/grass7/description/v.kernel.rast.txt

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+v.kernel
+v.kernel.rast - Generates a raster density map from vector points map.
+Vector (v.*)
+ParameterVector|input|Name of input vector map with training points|0|False
+ParameterNumber|radius|Kernel radius in map units|0.0|None|10.0|False
+ParameterNumber|dsize|Discretization error in map units|0.0|None|0.0|True
+ParameterNumber|segmax|Maximum length of segment on network|0.0|None|100.0|True
+ParameterNumber|distmax|Maximum distance from point to network|0.0|None|100.0|True
+ParameterNumber|multiplier|Multiply the density result by this number|0.0|None|1.0|True
+ParameterSelection|node|Node method|none;split|0
+ParameterSelection|kernel|Kernel function|cosine;gaussian;epanechnikov;quartic;triangular;triweight;uniform|1
+*ParameterBoolean|-o|Try to calculate an optimal radius with given 'radius' taken as maximum (experimental)|False
+OutputRaster|output|Kernel

python/plugins/processing/algs/grass7/description/v.kernel.vect.txt

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+v.kernel
+v.kernel.vector - Generates a vector density map from vector points on a vector network.
+Vector (v.*)
+ParameterVector|input|Name of input vector map with training points|0|False
+ParameterVector|net|Name of input network vector map|1|False
+ParameterNumber|radius|Kernel radius in map units|0.0|None|10.0|False
+ParameterNumber|dsize|Discretization error in map units|0.0|None|0.0|True
+ParameterNumber|segmax|Maximum length of segment on network|0.0|None|100.0|True
+ParameterNumber|distmax|Maximum distance from point to network|0.0|None|100.0|True
+ParameterNumber|multiplier|Multiply the density result by this number|0.0|None|1.0|True
+ParameterSelection|node|Node method|none;split|0
+ParameterSelection|kernel|Kernel function|cosine;gaussian;epanechnikov;quartic;triangular;triweight;uniform|1
+*ParameterBoolean|-o|Try to calculate an optimal radius with given 'radius' taken as maximum (experimental)|False
+*ParameterBoolean|-n|Normalize values by sum of density multiplied by length of each segment.|False
+*ParameterBoolean|-m|Multiply the result by number of input points|False
+OutputVector|output|Kernel