* Moritz Lennert <[email protected]> [2018-08-20 18:08:18 +0200]:
On 20/08/18 17:59, Nikos Alexandris wrote:A mapcalc expression, involving somewhat long(er) temporary map names, stored in the output raster map's history, looks like: ``` Comments: if((tmp.32493.16.tmp.32493.11.tmp.32493.6.recreation_potential == 1 && tmp.32493.17.recreation_opportunity == 1), 1, if((tmp.32493.16.tmp.32493.11.tmp.32493.6.recreation_potential == 1 && tmp.32493.17.recreation_opportunity == 2), 2, if((tmp.32493.16.tmp.32493.11.tmp.32493.6.recreation_potential == 1 && tmp.32493.17.recreation_opportunity == 3), 3, if((tmp.32493.16.tmp.32493.11.tmp.32493.6.recreation_potential == 2 && tmp.32493.17.recreation_opportunity == 1), 4, if((tmp.32493.16.tmp.32493.11.tmp.32493.6.recreation_potential == 2 && tmp.32493.17.recreation_opportunity == 2), 5, if((tmp.32493.16.tmp.32493.11.tmp.32493.6.recreation_potential == 2 && tmp.32493.17.recreation_opportunity == 3), 6, if((tmp.32493.16.tmp.32493.11.tmp.32493.6.recreation_potential == 3 && tmp.32493.17.recreation_opportunity == 1), 7, if((tmp.32493.16.tmp.32493.11.tmp.32493.6.recreation_potential == 3 && tmp.32493.17.recreation_opportunity == 2), 8, if((tmp.32493.16.tmp.32493.11.tmp.32493.6.recreation_potential == 3 && tmp.32493.17.recreation_opportunity == 3), 9))))))))) ``` Any smart ideas on how to post-process this to get rid of all 'tmp.32493.16.tmp.32493.11.tmp.32493.6.' parts? Standard string manipulation utilities?I would guess so.Or, rather, build an "fake" expression with the original map names just for the sake of having a cleaner history?Using r.support ?
The above "history" string is actually passed using `r.support`.
Looking at your expression, I'm mostly wondering why you don't just use r.cross to get the same result ... ;-)
In my in-code comments, ever since I started writing this script: - Why not use `r.cross`? 1) I just "translated" someone else's code and hade fun using `eval`. 2) Look back some time, r.cross has had problems with zeroes and NULLs. As usual, your attention to details is much appreciated Moritz. Nikos
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