Latest Contributions by AmyJ

‎05-31-2018

Thanks for the ideas Dan! After a lot of trials, I finally found that the following procedure works: 1. Download Terrestrial Mammals and Marine Mammals separately (Thanks for this idea Dan, I hadn't thought of it for some reason) 2. Repair Geometry (as I had done before) 3. Select by location (so this selected only the polygons that were located in the area that I wanted to clip it to) 4. Export selected data into a new shapefile 5. Split by Attribute Plug In (Split By Attribute Tool - Desktop Decision Support Tools) which split each polygon in the shapefile into a different feature class of a new geodatabase 6. Clip using Model Builder's feature class iterator And so far, it has been working!

‎05-24-2018

Hi! I am having issues clipping a very large polygon shapefile – can you all please help me? The error returned is “WARNING 000117: Warning empty output generated“. I have tried troubleshooting all of the usual suspects, including recommendations from the geonet community such as: The polygons are in the same projection I repaired the geometry (which fixed some issues but still got the error message when re-running) Since it is a large file – I created a new shapefile of subset data (Export data) that was much smaller and it is still not working The clip feature is just one single polygon not a multipart polygon The clip feature is contained within the shapefile of polygons that I am trying to clip (ie clip feature is for a small area in Central America and the polygons that I am trying to clip are for the entire world) Both are shapefiles as I know geodatabases can sometimes cause issues I have used the clip feature with other shapefiles without a problem so I know that nothing is wrong with this clip feature. Standard re-boot of computer, programs No features are selected when I am running this tool Located in a folder with no spaces and the file name is very short However the clip still returns the same error. The large dataset I am trying to clip is the MAMMALS file located at this link (the amphibians and reptiles files work just fine, but the Mammals does not): http://www.iucnredlist.org/technical-documents/spatial-data Thank you!

‎02-19-2018

Hi Xander, Thanks so much for all of your help! I really, really appreciate it! It worked perfectly! I am sorry that I misunderstood something minor in your first post and it wasn't working for me. But I was able to figure it out and it worked great. Also, sorry for not replying right away - I had to go work in the field (remote conservation work) for a few days and didn't have access to internet.

‎02-13-2018

Hi Xander! Thank you so much for all of your suggestions! They would be insanely helpful except for unfortunately this is not what I would like to do. I guess I was a bit unclear when I said that I wanted to create an "inverse." Essentially, the current raster contains areas closest to roads as smaller values and the areas furthest from roads as a very high value. However, I would like the raster to be the reverse of this - the areas closest to the roads should have the highest values and the areas furthest from the roads should have the lowest values. Specifically, the areas closest to the roads are 0.001 and the areas furthest from the roads are 3000. I would like the reverse - the areas closest to the roads to be 3000 and the areas furthest from the roads to be 0.001. Unfortunately for the analysis that I am doing, I can't have any negative numbers and they must be continuous, not integers. Do you know of any other ideas that could please help me? Thanks so much for taking the time to create all of the images and step-by-step instructions. That was so kind of you! I apologize that I wasn't clear enough in my question.

‎02-13-2018

Thanks Dan! What value would you suggest that I give the constant raster? Sorry but I am a little bit unclear as to how this might help solve the problem. If I divide the Euclidean distance by a constant raster (ie let's say I divide everything by 2), then I would still have the areas that are furthest away be the highest values and not the lowest values - they would all just be half the value that they were before. Maybe I am understanding this completely wrong? Can you please let me know what I am not understanding?

‎02-13-2018

Thank you Nawajish! My roads do not have unique values - they are all the same in terms of how influential they are to the analysis. At the moment, roads are labeled 1 and the background of the raster is 0. I tried running Euclidean Allocation on this and it didn't work. I tried using the FID unique value as the source field and running Euclidean Allocation again and this did not work either. Can you please let me know what you mean by what kind of unique values the roads should have in order to run the Euclidean Allocation tool? Thanks!

‎02-12-2018

Hi everyone, I am trying to do the reverse / inverse of a euclidean distance. For example, I am doing distance to roads analysis. The output from the distance raster shows roads as 0 and areas closest to roads as 0.1, 0.2, etc and the areas furthest from roads as a very high value. However, I would like the raster to be the reverse of this - the areas closest to the roads should have the highest values and the areas furthest from the roads should have the lowest values. Specifically, the areas closest to the roads are 0.001 and the areas furthest from the roads are 3000. I would like the reverse - the areas closest to the roads to be 3000 and the areas furthest from the roads to be 0.001. How do I create a raster that reverses the number? I would use reclass but this would be difficult to use as the values are continuous and not integers. Is there a way to do this in reclass or raster calculator that I am not aware of for continuous values without overgeneralizing them? Or is there a different tool that I can use? I am trying to do this in IDRISI so if any of you know how to do it in this program, that would be exceedingly helpful. If not, I am definitely happy with ideas on how to do this in ArcGIS, and then I can import the file into IDRISI after editing it in ArcGIS. Thank you!

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Date Last Visited	‎11-11-2020 02:24 AM

My Ideas

Latest Contributions by AmyJ

Re: Help with Clipping Data Error – Empty output generated – Troubleshooting has not fixed the problem – ArcGIS 10.5

Help with Clipping Data Error – Empty output generated – Troubleshooting has not fixed the problem – ArcGIS 10.5

Re: Inverse of Euclidean distance?

Re: Inverse of Euclidean distance?

Re: Inverse of Euclidean distance?

Re: Inverse of Euclidean distance?

Inverse of Euclidean distance?

Re: Help with Clipping Data Error – Empty output g...

Re: Inverse of Euclidean distance?