# Nature Access TypeError: int() argument must be a string **URL:** \ **Category:** Software Support\ **Tags:** urban-nature-access\ **Created:** [May 2, 2023, 8:38pm UTC](https://community.naturalcapitalalliance.org/t/nature-access-typeerror-int-argument-must-be-a-string/3701 "2023-05-02T20:38:23Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Pibsen](https://avatars.discourse-cdn.com/v4/letter/p/a87d85/32.png) [@Pibsen](https://community.naturalcapitalalliance.org/u/Pibsen)\ **Post date:** [May 2, 2023, 8:38pm UTC](https://community.naturalcapitalalliance.org/t/nature-access-typeerror-int-argument-must-be-a-string/3701/1 "2023-05-02T20:38:23Z")
### What is the issue or question you have? I continue to get basic errors when trying to run the Nature Access Model. I am using an urban green space raster clipped to the extent of Los Angeles City. There are five land use attributes 0-4 (Zero is no urban nature, 1-4 is urban nature of different types), where lu attributes 2-4 have a nature access value of 1, and all others have zero. I am using the same search distance for all attributes. The population raster is from the EPA Dasymetric population data, also clipped to LA, and the administrative boundary is the city boundaries of Los Angeles. ### What do you expect to happen? I expect it to run and provide me the nature supply and demand outputs ### What have you tried so far? I have ran the model using a similar LU raster, but with only 4 attributes, excluding the zero-data attribute for no-data ### Attach the logfile here: 05/02/2023 14:18:05 natcap.invest.urban\_nature\_access INFO Starting Urban Nature Access Model 05/02/2023 14:18:05 natcap.invest.urban\_nature\_access INFO Using decay function dichotomy 05/02/2023 14:18:05 pygeoprocessing.geoprocessing INFO starting stats\_worker 05/02/2023 14:18:05 pygeoprocessing.geoprocessing INFO started stats\_worker \ 05/02/2023 14:18:06 pygeoprocessing.geoprocessing INFO 100.0% complete 05/02/2023 14:18:06 pygeoprocessing.geoprocessing INFO Waiting for raster stats worker result. 05/02/2023 14:18:06 pygeoprocessing.geoprocessing INFO starting stats\_worker 05/02/2023 14:18:06 pygeoprocessing.geoprocessing INFO started stats\_worker \ 05/02/2023 14:18:06 pygeoprocessing.geoprocessing INFO 100.0% complete 05/02/2023 14:18:06 pygeoprocessing.geoprocessing INFO Waiting for raster stats worker result. 05/02/2023 14:18:06 pygeoprocessing.geoprocessing INFO starting stats\_worker 05/02/2023 14:18:06 pygeoprocessing.geoprocessing INFO started stats\_worker \ 05/02/2023 14:18:06 pygeoprocessing.geoprocessing INFO 100.0% complete 05/02/2023 14:18:06 pygeoprocessing.geoprocessing INFO Waiting for raster stats worker result. 05/02/2023 14:18:06 pygeoprocessing.geoprocessing INFO starting stats\_worker 05/02/2023 14:18:06 pygeoprocessing.geoprocessing INFO started stats\_worker \ 05/02/2023 14:18:06 pygeoprocessing.geoprocessing INFO 100.0% complete 05/02/2023 14:18:06 pygeoprocessing.geoprocessing INFO Waiting for raster stats worker result. 05/02/2023 14:18:06 pygeoprocessing.geoprocessing INFO starting stats\_worker 05/02/2023 14:18:06 pygeoprocessing.geoprocessing INFO started stats\_worker \ 05/02/2023 14:18:06 pygeoprocessing.geoprocessing ERROR exception encountered in raster\_calculator Traceback (most recent call last): File “pygeoprocessing\geoprocessing.py”, line 517, in raster\_calculator File “natcap\invest\urban\_nature\_access.py”, line 2612, in \_mask TypeError: int() argument must be a string, a bytes-like object or a real number, not ‘NoneType’ 05/02/2023 14:18:06 pygeoprocessing.geoprocessing INFO Waiting for raster stats worker result. 05/02/2023 14:18:06 pygeoprocessing.geoprocessing\_core WARNING No valid pixels were received, sending None. 05/02/2023 14:18:06 taskgraph.Task ERROR Something went wrong when adding task Mask lulc to the known valid pixels (4), terminating taskgraph. Traceback (most recent call last): File “taskgraph\Task.py”, line 674, in add\_task File “taskgraph\Task.py”, line 1093, in \_call File “natcap\invest\urban\_nature\_access.py”, line 2615, in \_mask\_raster File “pygeoprocessing\geoprocessing.py”, line 517, in raster\_calculator File “natcap\invest\urban\_nature\_access.py”, line 2612, in \_mask TypeError: int() argument must be a string, a bytes-like object or a real number, not ‘NoneType’ 05/02/2023 14:18:06 natcap.invest.utils ERROR Exception while executing natcap.invest.urban\_nature\_access Traceback (most recent call last): File “natcap\invest\utils.py”, line 164, in prepare\_workspace File “invest\cli.py”, line 469, in main File “natcap\invest\urban\_nature\_access.py”, line 781, in execute File “taskgraph\Task.py”, line 674, in add\_task File “taskgraph\Task.py”, line 1093, in \_call File “natcap\invest\urban\_nature\_access.py”, line 2615, in \_mask\_raster File “pygeoprocessing\geoprocessing.py”, line 517, in raster\_calculator File “natcap\invest\urban\_nature\_access.py”, line 2612, in \_mask TypeError: int() argument must be a string, a bytes-like object or a real number, not ‘NoneType’ 05/02/2023 14:18:06 natcap.invest.utils INFO Elapsed time: 0.43s 05/02/2023 14:18:06 natcap.invest.utils INF ---
**Author:** ![swolny](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.naturalcapitalalliance.org/swolny/32/181_2.png) [@swolny](https://community.naturalcapitalalliance.org/u/swolny)\ **Post date:** [May 3, 2023, 4:22pm UTC](https://community.naturalcapitalalliance.org/t/nature-access-typeerror-int-argument-must-be-a-string/3701/2 "2023-05-03T16:22:50Z")
Welcome to the forum @Pibsen! In general, when posting about an error, please upload the entire log file, which has additional information (like a listing of your inputs) that could help us troubleshoot. This error message isn’t very helpful, and since this is a new model I don’t have a feel for what might be happening. So could you please package up your inputs and send them to me? The most useful way is like this: 1/ In InVEST Workbench, go to the tab where you’re entering your model inputs. 2/ Click on “Save As…” in the left side of the screen. 3/ In the “Datastack options” window that appears, click on “Parameters and data”. 4/ Give the output file a name (leaving it as the default is fine too), and make sure that the file extension is “.tgz”. 5/ Save the file and send it to me at swolny@stanford.edu. Thanks! ~ Stacie ---
**Author:** ![swolny](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.naturalcapitalalliance.org/swolny/32/181_2.png) [@swolny](https://community.naturalcapitalalliance.org/u/swolny)\ **Post date:** [May 4, 2023, 3:36pm UTC](https://community.naturalcapitalalliance.org/t/nature-access-typeerror-int-argument-must-be-a-string/3701/3 "2023-05-04T15:36:16Z")
Thanks for sending your data @Pibsen. I found a few things going on. The cause of the initial error was because the land use/land cover map does not have a NoData value set. I exported the LULC raster to a new file, added a NoData value, and got past that error. Then there was another error, due to there being a value of 255 in the LULC raster that is not present in _lulc\_attribute\_table\_csv.csv_. I added a value of 255 to the CSV (with an urban\_nature value of 0) and it fixed that problem. The last thing I noticed is that the _City\_Boundary_ shapefile has the geographic coordinate system WGS84, when it needs to have the same projected coordinate system as your other inputs (as noted in the [Data Needs section of the User Guide](https://storage.googleapis.com/releases.naturalcapitalproject.org/invest-userguide/latest/en/urban_nature_access.html#data-needs)). It seems to me that Workbench should be catching this when it’s entered into the user interface, since it usually does this kind of error-checking, but it’s not. So you’ll need to reproject the City\_Boundary layer to match the others. Then the model ran successfully. Please let us know if you run into anything else, it’s helpful to get feedback from users about new models. ~ Stacie ---
**Author:** ![Pibsen](https://avatars.discourse-cdn.com/v4/letter/p/a87d85/32.png) [@Pibsen](https://community.naturalcapitalalliance.org/u/Pibsen)\ **Post date:** [May 4, 2023, 9:53pm UTC](https://community.naturalcapitalalliance.org/t/nature-access-typeerror-int-argument-must-be-a-string/3701/4 "2023-05-04T21:53:08Z")
Thank you! That got the model working 🙂 ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex031/uploads/naturalcapitalproject/original/2X/8/8d95591aa074da87ea0fdd61ca47c1c3c0588aa7.png) [@system](https://community.naturalcapitalalliance.org/u/system)\ **Post date:** [May 11, 2023, 9:53pm UTC](https://community.naturalcapitalalliance.org/t/nature-access-typeerror-int-argument-must-be-a-string/3701/5 "2023-05-11T21:53:55Z")
Closed on May 11, 2023, 9:53pm UTC This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.