Latest Contributions by FelixPertziger

I have map document which I use as workbench for processing only, not map making. I remove all layers from table of content when done with processing. Document has a couple of custom menus. They point to frequently used system tools and to my own tools (Python scripts) in custom toolboxes. I've checked 'Save all customization to the document' in Customize-Options. Still from time to time I am losing customizations, i.e. menu items pointing to scripts stop showing parameters window. Other items in the same menu, which point to system tools, work as expected. What I tried: stop folders indexing in ArcCatalog and ArcMap itself, but it doesn't help. tried to remove read-only attribute on folder with toolbars and failed So my workaround is to keep working version of above map document and use it to overwrite original. I use in_memory workspace when possible, but I don't think this is a reason, it happens randomly, even when I use SSD only. Please help, if you know how to fix it. ... View more

Not long ago I updated ArcGIS to version 10.8 and found some major improvements in Spatial Analyst tools. For example in version 10.5 I struggled to compute Cost Back Link for large rasters due to memory error. It works now and it's very fast. Unfortunately there are some bad flaws. Attached picture shows tiny extract from Cost Distance surface and one out of 6500 sources. Source point labelled by value sampled from Distance surface. This means that cost path exists between this point and some destination cell. Picture also show 2 gaps in Distance surface (same is true for Back Link surface), as a result ArcGIS fails to complete Cost Paths. It gets to the stage "Tracing Cost Paths...", shows progress bar and nothing is happening afterwards. The longest I waited was 30 minutes before killing the process. I am able to isolate very few sources (3 out of 6500 in this case) and find cost paths from them, but a) this is a pain, because it involves some map algebra on big rasters and b) Cost Path tool that worked like a charm on any size surfaces in version 10.5 is so slow now that I was forced to develop my own tracing script that read-write from/to binary floating-point files. I found that there are only 13 cells with missing values over a huge 25194*26924 cost raster and I can semi-manually fix it, but it is not how it should be. Are you aware of patch fix for that? If not I hope this post will get to ESRI developers. Regards, Felix ... View more

I am using ArcGIS 10.8. When I use point feature class from file geodatabase as input to Sample tool (using OBJECTID as unique ID field, see 1st attachment) output sample table has duplicate rows for point with same OBJECTID (2nd attachment). Environment setting extent, cell size and snap raster all set to raster in question. I can get sensible output by converting points to raster, but it is an extra step I am trying to avoid. Anyone has the same experience? ... View more