* Markus Metz <[email protected]> [2018-02-26 14:38:08 +0100]:
On Mon, Feb 26, 2018 at 1:31 PM, Nikos Alexandris <[email protected]> wrote:* Markus Metz <[email protected]> [2018-02-26 13:01:35 +0100]:On Mon, Feb 26, 2018 at 11:19 AM, Gra <[email protected]> wrote:Dear community I use r.cross to combine and then reclassify a set of indicators. I realised that r.cross doesn't work correctly. I have two inputs maps with values from 1 to 3 each. the problem is that r.category doesn't list the first combination (eg 1to 1)eg r.category map=myinput@in_data0 1 category 1; category 2 2 category 1; category 3 3 category 2; category 1 4 category 2; category 2 5 category 2; category 3 6 category 3; category 1 7 category 3; category 2 8 category 3; category 3 in reality the first combination exists (0 is empty but I should havethere category 1; category 1)the problem is that I have to iterate on 700 cases and I wont check andcorrect manually.could you fix it?Please try trunk r72281Works for me, thank you. What about the -z flag, though? The manual reads: With the -z flag zero data values are not crossed. This means that if a zero category value occurs in any input data layer, the combination is assigned to category zero in the resulting map layer, even if other data layers contain non-zero data. In the example given above, use of the -z option would cause 3 categories to be generated instead of 5.The -z flag does not behave as explained in the manual. It comes from the old days when there was no NULL encoding in GRASS, and zero was used as nodata. Now the -z flag means that with the -z flag, NULL values are not crossed, not that zero data are not crossed. This has been introduced in 2013 with r55276. The results of r.cross without the -z flag might look strange if any of the input maps contains NULL cells. Markus M
Maybe renaming to -n (in future versions) ? Nikos
By the way, it should be: "In the following example..." and not "In the example given above...". NikosMarkus Mthanks Grazia
-- Nikos Alexandris | Remote Sensing & GeomaticsGPG Key Fingerprint 6F9D4506F3CA28380974D31A9053534B693C4FB3
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