What is the configuration and extension (.txt, .csv ...) of the Pairwise comparisons table file requested by the SAGA AHP tool- Analytical Hierarchy Process - in QGIS? Are there examples of applications available?
1 Answer
As of today, working with SAGA through QGIS 2.18 Processing Toolbox would be safer than the latest QGIS 3 (I appreciate your [qgis-2] tag for that reason).
You can use any text format to create the Pairwise Comparisons Table, as far as it can be read by QGIS. I would suggest csv format, as I can just drag and drop it onto QGIS window.
(1) Create csv file;
Please make sure you have one header row, which indicates each input layer. Also note the order of the row (rows 2, 3, 4 in this example) should follow the same layer order. (I mean, row number 2 represents Layer1).
(2) Drag and drop the above csv file onto QGIS
(3) Start Analytical hierarchy process tool and;
(3A)....... select the layer in the order according to the table
(3B)....... select the table layer as the Pairwise Comparison Table.
then, Run the tool.
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The Analytical Hierarchi Process tool with the suggested table worked fine in QGIS 2.14.18. On the other hand, in QGIS 2.18.27 the SAGA tool has responded: 'NoneType' object has no attribute 'crs' See log for more details– SergioApr 12, 2019 at 18:47
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I understand that the table works fine in QGIS 2.18.27 as well. However, I noticed that in my machine several SAGA tools fail in QGIS 2.18.27, among them: raster calculator, analytical hierarchy process, reclassify values ... and so on. Always with the same answer: 'NoneType' object has no attribute 'crs' See log for more details. I would appreciate it if you can help me with this problem too.– SergioApr 15, 2019 at 18:54
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@Sergio Have you searched this site with
[mac][saga]tags? If you find no solution then you can post a new question.– KazuhitoApr 15, 2019 at 22:02