Latest Contributions by MalloryGill

Thanks Gina! This does make total sense. Consider it user error - I was misunderstanding how the No Data areas would be treated in the outputs. Initially I was expecting there to be "no data" pixels in the outputs as well as the predicted 0 and 1 classes, which in hindsight doesn't make sense, so your explanation set me straight. Thank you! ... View more

Awesome - thanks for the heads up! ... View more

Sure thing! Code is below, it's part of a larger python toolbox I'm building. We'll be iterating through different geographic areas and running the tools, so the class dictionary just allows for flexibility in how many classes there might be in a raster. If you had just a single location or a consistent set of classes you could hard code a single sampling percentage string and cut out everything above line 21 # build class dictionary for sampling percents class_dict = {} class_dict[9] = "0 25;1 50;2 50;3 50;4 50;5 50;6 50;7 50;8 50;9 50" class_dict[8] = "0 25;1 50;2 50;3 50;4 50;5 50;6 50;7 50;8 50" class_dict[7] = "0 25;1 50;2 50;3 50;4 50;5 50;6 50;7 50" class_dict[6] = "0 25;1 50;2 50;3 50;4 50;5 50;6 50" class_dict[5] = "0 25;1 50;2 50;3 50;4 50;5 50" class_dict[4] = "0 25;1 50;2 50;3 50;4 50" class_dict[3] = "0 25;1 50;2 50;3 50" class_dict[2] = "0 25;1 50;2 50" class_dict[1] = "0 25;1 50" # determine how many classes are present in raster ds = gdal.Open(wetland_path) arcpy.AddMessage(ds) band = ds.GetRasterBand(1) arcpy.AddMessage(band) max_val = band.GetMaximum() arcpy.AddMessage(max_val) if max_val in class_dict: sample_pct = class_dict[max_val] arcpy.AddMessage(f'{wetland_name} has {max_val} wetland classes - sampling perentages {sample_pct}') # train test split arcpy.AddMessage(f'Building train and test split for grid {pagenum}...') train_name = f'grid_{pagenum}_train.tif' test_name = f'grid_{pagenum}_test.tif' train_path = os.path.join(model_folder_path, train_name) test_path = os.path.join(model_folder_path, test_name) p_traintest = traintestsplit.TrainTestSplit() ret_traintest = p_traintest.executeAH(in_gt_ras=wetland_path, out_train=train_path, out_test=test_path, in_class_sampling_percent=sample_pct) else: arcpy.AddError(f'Sampling percentages not found for {max_val} class raster. Exiting.')   ... View more

Thanks so much Gina! I ended up finding a workaround - I'm working on a standalone python script that predicts wetlands (using the WIM tools) and calculates impacted wetland areas for project locations. And I was able to call the Train Test Split tool successfully from my standalone python script to generate the train and test rasters without getting the error message. I'll definitely keep an eye out for the upgrade in the next few weeks, thanks again for your help! ... View more

For anyone still having issues with the second example where an apostrophe causes the custom URL to break and stop auto-populating subsequent fields - Lance Cole‌ provided a great workaround. You can read his full response here Custom URL from Collector Passing Attribute Values with Special Characters to Survey123‌. ... View more

Lance Cole- this worked! I had to tweak the arcade expression just a bit, the expression I ended up using is below Var t = $feature["Trail_Name"] IIf (Find("'", t)>0, Replace(t, "'", "%27"), t)‍‍‍‍‍‍ And a couple Esri quirks I found as well - when using the custom URL link from a web map, the link attempts to encode the % sign that I'm manually inserting above, adding some extra unexpected characters to the Survey123 form, BUT when the link is clicked from Collector, it works exactly as expected. I also found that this is currently only supported in Collector for iOS devices. For android devices, the Collector app doesn't honor the arcade expression being sent through (yet) and that field just shows up as a blank line. However, the Beta version of Collector for android (also available in the Google Play Store) does support the arcade expression, so the link and resulting population in Survey123 shows the expected result. Thanks again for all of your help! Mallory ... View more

Lance Colethis looks like exactly what I need - thank you!! I'll give this a go later this week Thanks for all of your help! Mallory ... View more

Hey Lance Cole - I had the same thought, but we're passing through a field name rather than a specific value for the field. So the URL reads arcgis-survey123://?itemID=abcdefghijklmnopqrstuvwxyz&field:TrailName={trail_name} rather than arcgis-survey123://?itemID=abcdefghijklmnopqrstuvwxyz&field:TrailName="Mary's Rock". I couldn't think of any way to add this encoding on a conditional basis anytime an apostrophe comes up in the passed field's value. But I'm definitely open to any ideas or possible workarounds I've missed! Thanks for your help! Mallory ... View more

Has there been any resolution to the second behavior in the original post? I'm having the same issue in a Survey123 Form - where an apostrophe is passed through as an attribute value by the URL parameters and the Survey 123 form stops populating anything else after that. This behavior doesn't show up in the windows version of the Survey123, but does on the iPad and android devices we've tested. ... View more