I am trying to do a very simple thing - convert a raster to a polygon where positive values are one set of polygons, and negative values are another set of polygons. The raster ranges from a minimum value of -8.00857 to a maximum of 9.4592. Here's what I have tried:

  1. Convert floating point Raster to Int (Int does not work).
  2. Multiply raster by a large number to remove decimal places then Convert Raster to Int (Int does not work)
  3. Reclassify into two classes: 0 for negative, 1 for positive (Reclassify does not work)
    1. Extract positive and negative values using Extract by Attribute and then apply steps 1-3 to them. Extract by attribute works, but none of steps 1-3 work.

The error messages do not indicate why the tools are not working.

  • Here is a link to the file on Google Drive: drive.google.com/open?id=1MXyY3wN6pU9hY23fBPxeiRJHH5YUKLwE Commented Apr 17, 2018 at 19:22
  • Sounds like you are looking for just two polygons... Suppose your raster is a mix of positive/negative values distributed throughout the raster with no clearly defined zones?
    – ZrSiO4
    Commented Apr 17, 2018 at 19:57
  • Reclass worked just fine using your data. What is your error message?
    – GBG
    Commented Apr 17, 2018 at 20:02
  • Yes, that is correct. When I say two polygons I mean two sets of polygons. One set of negative polygons and another set of positive polygons. Commented Apr 17, 2018 at 20:02
  • @GBG the error message is 999999: Error executing function. May I ask how you entered the 'old classes' in order to have the tool work successfully? Commented Apr 17, 2018 at 20:11

1 Answer 1


The following parameters resulted in a successful reclassification of your data. I also found Trouble with Reclassify tool when I did a Google search on 999999 error using reclassify.reclass paramaters

  • This is exactly what I have done and it does not work. How strange, I cannot think what else could be the issue. Commented Apr 17, 2018 at 21:53
  • Thank you for looking at this. I may just restart my analysis from the beginning and see if I run into the same issue. Commented Apr 17, 2018 at 21:54
  • Alright I just got it working. All I changed was the directory where I was saving it. Must be some kind of pathway issue. Thank you again. Commented Apr 17, 2018 at 21:57

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