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Hey Mervyn, Yes exactly basically how endangered which species is. Thanks a lot I basically followed your advice just tweeked it a bit. I left out the count overlap in the beginning. Because I want to produce two maps. One for how many species can be found in an area (for this I use the count overlap tool) and then one map with the accumulated threat level of all species in one area (e.g. S1 (lv. 3) + S2 (lv.4) + S3 (lv.3) + S4 (lv.2) + S5 (lv.2)). So if I would use the count overlap before hand and combine all species from one threat level I assume I could not add up the threat levels of each species invidually anymore? Either way also just doing the Union and then the Field Calculator gave me exactly the result I needed. Thanks so much for your quick and amazing help! All the best, Mo
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05-19-2020
06:07 PM
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Hi Mervyn, Thanks a lot! I just had to update my GIS and then I found the tool and it worked really well. Do you have an idea how I could include the threat level in this as well. Like for every species layer (polygon) I have the threat levle as a number in the attribute table. If they were Rasters I could simply do Raster calculation but since they are Polygons I do not know how to add the values together. Also I would then need to display how high the accumulated threat level of the overlaying layers is, rather than showing how many layers are overlapping. Thanks a lot, Mo
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05-17-2020
05:05 PM
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Hey, I am planning to create something like a biodiversity map on ArcGIS Pro. For that purpose I downlaoded the shapefiles for the range of various species, in form of polygons. Now I am planning to merge all this data together. Basically, what I am trying to do is to colour the map differently depending on how many layers (polygons) are overlaying in one area (e.g. the more overlay the redder). Meaning I am trying to show how many species are found in a certain area. Is there any tool that can do this. I was playing a round for a while but didn't find anything. On top of this I would also like to include the RedList threat level for every species (i.e. layer) in the attribute table, in form of numbers the higher the more endangered. With those I then would liek to create a second map showing the accumulated threat level in certain areas, so once again showing different colour (e.g. the higher the accumulated threat level the redder the area). Generally I have amn idea how to do it but I would first have to create those overlapping layers, and then I would be wondering how to calculate the accumulaed threat level number. I hope everything is clear and someone can help me out. Thanks a lot, Mo
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05-16-2020
08:15 PM
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