DESCRIPTION
The r.reclass.attr plugin let you reclass/recode a raster
layer based on values in a csv table. The csv file should include at
least two columns. The first column should correspond to (part of)
the raster values. The other columns should hold the
reclassification values.
For each column in the csv (comma separated text) file (except
the first one) a new map will be created, replacing the raster
values corresponding to the first column with those in the second
(3rd, 4th, etc) column.
The user can define the names of the output map(s). If only one
output name is provided and the rules file contains more than two
columns, the function will create output names by appending for each
recode layer the corresponding column name to the output name
provided by the user.
NOTES
The script uses r.recode to allow the user to reclass integer values
to floating point values. However, like r.reclass
you can only convert number one to one (and not like r.recode
ranges of values to one value or a new range of values)
TODO
- Use r.reclass instead of r.recode when possible (if input
raster is integer and all reclass values are integers)
- Allow text files with different types of separators (now only
comma separated files)
EXAMPLES
See this blog post for an example.
SEE ALSO
r.reclass,
r.recode
AUTHOR
Paulo van Breugel, paulo at ecodiv.org
Last changed: $Date: 2014-12-13 09:11:08 +0100 (za, 13 dec
2014)