Out of memory error

[AdamBorczyk]

Hi,

for the past few days I suddenly started to experience Out Of Memory error coming out of ArcMap. It happens when I'm working with raster Classification tool. I basically draw some training sites on a raster and press 'view histogram' of the sites or 'view scatterplot'. I was able to use it normally until recently. What is strange, I'm able to perform chosen classification with this data, just can't preview histogram/scatterplot/statistics (which is crucial). After some attempts to open these histograms etc., I get ArcMap crashed and a window to send the report appears.

The image I'm working on is ~800mb product of Landsat image (7 bands), but it also happens on any other image.

What I tried to do after getting the error:

- clean up Windows using Disk Cleanup (some temp files etc)

- clean the Default.gdb to zero (that was my scratch space)

- disable all extensions except one which is needed (Spatial Analyst)

- started new project, new .mxd file and load only the raster to work on into it

- create fresh new shapefile of training sites

- restart laptop and Arc of course

I run Windows 7 Pro x64 and ArcGIS 10.5.0.6491. I got 8GB of RAM and 4-core Sandy Bridge CPU. I have 20-30 GB free on my SSD disk. I would appreciate any help, since I cannot do my work at all because of it.

https://community.esri.com/community/gis/managing-data?sr=search&searchId=0f88668d-ed0b-4e6c-8bcf-95...‌

[DanPatterson_Retired]

check your specs against the recommended here

8 Gb of ram is not relevant unless you are using something that supports 64 bit background geoprocessing...

ArcMap is restricted to 4 max., in a perfect world

Check your video specs specifically

And if it works on a more uptodate machine and operating system with better specs you could rule out issues with the data itself

[AdamBorczyk]

Hi, thanks for the advice. Unfortunately my laptop has better specs than recommended and it doesn't help. E.g. I run ArcMap with 1GB NVidia card. I'll try to find some new machine to try it, but what puzzles me is that I was successfully using this tool for a few months already! And it suddenly stopped - there must be a way to repair it.

[DanPatterson_Retired]

If it worked with that exact same file previously, then it has something to do with your environment or you may need to Repair arcmap (through your operating system in the ininstall/install section, there is a repair... can't remember where exactly in win 7)

[AdamBorczyk]

Thank you for your suggestion. I tried both to reinstall ArcGIS package and repairing the installation and so far it works. I hope it won't crash again - then I'll try another machine.

[AdamBorczyk · Accepted solution]

I think I got this. When processing images, there was a field to (optionally) specify NoData value. There was some value input already and I left it untouched since it was default. This value was 2147483647 (or -2147483647). This got my raster promoted to 32-bit signed integer, because it was 16-bit signed int before. I suppose 32-bit ArcGIS geoprocessing won't handle 2^32 value range in raster, hence the error. Not sure if it's correct what I think, but it behaves like this.

So the point is to observe and take action if some tool wants your NoData to have a value that is above the range of your current raster, because otherwise it promotes it to the next pixel depth range.

I personally used a Copy Raster tool afterwards, where you can specify pixel depth and NoData value.

[DanPatterson_Retired]

nodata... environment setting mentions bit promotion and some options on how to avoid it... glad it worked out

[AdamBorczyk]

You're right, but the Pricipal Components just doesn't honour this Environment setting.

[XanderBakker]

You could create a mask for the area that contains data and use the mask setting which is support by Principal Components—Help | ArcGIS Desktop  

[AdamBorczyk]

Hi, thanks. This doesn't have any effect on pixel depth though. The advantage is only that you don't need to run separate Clip Raster tool (which takes a long time) - of course in case you actually need any clip.