Latest Contributions by MarkBoucher

ArcHydro is a free add-on that uses Spatial Analyst License to do these things. I have not used it in Pro. You can do these things just using Spatial Analyst w/o ArcHydro. ... View more

Hi Mark,  Thanks very much. This is quite helpful! Using my original 10 x 10 m DEM instead of resampling to 1x1 m saved a ton of processing time and hard drive space. To clarify my understanding-- Since my project is in meters, then 2 Z units should equal 2 meters?  My results support this notion! 🙂 Below is my original DEM "DEM_Nooksack" and my DEM Reconditioning tool output "DEM_AGREE".        Follow-up question: I already filled sinks in the original DEM before using it as input for the DEM Reconditioning tool. Do I need to fill sinks again? My best guess is no. I'm studying a coastal watershed with lots of low-lying land, so it seems accurate to me that some of the agricultural canals that I burned would be changed from 0 to -2 m elevation.   Thanks again for your help! ... View more

In Pro 2.8.2, I can successfully create one feature by tracing. However, for an additional feature, the trace tool for feature construction will not work without quitting and restarting the software. After one feature, the software does not respect my trace preferences. It behaves as if "trace selected features only" was selected. Also the software stops respecting user snapping preferences. It is not able to create any feature after the first one by tracing. Quit, restart. My trick (when stuck on feature construction) dealing with other bugs was to temporarily select a different feature template in a different feature class, then switch back to the template required, though this isn't a fix for the trace tool bug. ... View more

Thank you for sharing the data and for reporting this issue BabakJfard. It seems like the ZonalStatisticsAsTable tool has some issue in ArcGIS Pro 2.8.2 with the MakeNetCDFRasterLayer tool output as a value raster input. We will take a closer look and will address it in the upcoming release. For a workaround, please use the new MakeMultidimensionalRasterLayer tool to add the PM25 layer to your analysis in Pro. This tool creates a raster layer from a netCDF file with specified variables and dimensions: Try, arcpy.md.MakeMultidimensionalRasterLayer(r"C:\data\V4NA03_PM25_NA_200007_200007-RH35.nc", "PM25_MMRL", "PM25") Then use the raster layer in your Zonal tool, as you have done above. Your new output should contain the same number of zones, as in your CONUS counties dataset. Hope that helps! Thanks, Sarmistha ... View more

I do this using Spatial Analyst, so it takes that license.  You don't have to clip or buffer the rasters unless there is some other reason to do so. I like to use model builder. You could build one like this and then copy and paste it and replace the value raster with the successive rasters and change the field in the calculation to polygon field. I'm sure there is a way to do this with an iterator (iterate through the polygons or something like that) and or in python, but the general idea would be the same: do zonal statistics to a table, the join that table with the polygon layer and use the calculate tool to transfer the statistics you want from the table to the polygon layer and then remove the join. I believe that if there is more than one polygon in the polygon layer this will work unless they overlap. I think that If they overlap you will need to iterate through the features.     ... View more

Tania, I tried that, but the Con function wouldn't create an unsigned 8-bit integer raster. The signed 8-bit raster can't have 128 and so it for some reason defaults to -128. When I started over this second time I didn't change the folder, I simply deleted the fil and fdr rasters as well as the project's .gdb. This seemed to fix the fdr issue without having to "really" start over. Thanks, Mark ... View more

@FauzanAldi  - This is a very common error. I think it means that the process can't find the data it is looking for. This is because: the data connection is broken - possibly the latent time between the server and your PC is too long and something times out - this is my guess as to why it works with fewer errors on your local PC compare to over the network to a server - faster on a local drive anyway, a data or filename is too long for one of the processes - some older ArcHydro routines have legacy file/path/layer name length restrictions - a reason to use the local drive an a simple directory name- raster names have restrictions, you missed a process in the sequence - check that you are not missing a key step you or some process deleted some intermediate data - in retrying processes this can happen - I sometimes delete all the intermediate data and start again with a clean slate. the processing extent has been changed for some reason and the data you want to use exists but is not in the processing extent. I have struggled to understand the root cause of this error in the ArcHydro process, and the above are some "theories" I try to work with in debugging the error. I've actually made a Model Builder model of a key process using logic and Spatial Analyst tools (a workaround). I've had success with this, but it is time consuming to do this "programing" and using it on the next project requires a lot of checking to make sure file paths are correct or I'll overwrite data in the last project. Learning python better would help in this, I'm sure. I have not had the chance to use ArcHydro for many months, so I won't offer to take your data and work with it. Possibly someone else has time to do that. I hope this helps. Best, Mark  ... View more

The exceptions should only be lost if you edit the geometry of the feature that is excepted and then validate. Make sure you have dirty areas turned on and see if anything goes "dirty" during your edits. That could tell you more about what is happening. Esri should have dirty areas on by default. ... View more

This thread is a but old now but i am running into this same issue with ArcMap 10.8.1. I have tried re-downloading hydrotools from https://downloads.esri.com/archydro/archydro/Setup/10.8/10.8.0.33/ and my DEM comes from SRTM (.hgt) files. The Solution proposed by christine seems to take me back to an older version of Hydrotools and I also tried Mark's solution and ensured my streams layer (downloaded from WWF hydrosheds) has unique study id's.  Any help would be greatly appreciated  ... View more

Hi Mahmoud, I am having the latest version of ArcGIS Pro so kindly tell how I perform the above step as per the latest version? ... View more

hi, when i am trying to catchment polygon processing in arcgis 10.2 , i have got encountered with an error "Error HRESULT E_FAIL has been returned from a call to a COM component". So, help me from this error. ... View more

Hi Mark,  I have tried to run DEM RECONDITIONING, I have tried all the solutions posted here, but I couldn't run the tool. I'm using ArcGIS 10.7, windows 10. The process starts, but I have noticed in Results that after the "Eculidean Allocations", the process "IsNull" can't be completed, as follows: ... View more

Hey everyone, I can't find batch subbasin delineation tool.. Is it the same as batch watershed delineation tool or something else? ... View more

Good question, David Wheelock‌.  We answer that in https://community.esri.com/community/arcgis-ideas/blog/2020/08/27/arcgis-ideas-a-home-remodel  Idea scores today are scaled by a factor of 10.  Score is obviously really important when it comes to ideas, so it will of course carry over through the migration.  But since the new site uses 1 kudo = 1 vote, today's scores will essentially get divided by 10.  If an idea today has 15 upvotes, giving a score of 150, when you see it on the new site, it will have 15 kudos. Comments, content such as attachments/embedded screenshots and number of views are also all carried over.  This is important metadata that is often considered by teams when reviewing ideas.  Note that some ideas that have already been addressed, or if a team has decided that something will not be considered, or if there has been no activity for more than 5 years, will be archived. I hope this helps! ... View more