Latest Contributions by DuncanHornby

‎11-18-2022

Where is your shapefile, in some cloud storage place like dropbox? Remember shapefiles are old formats (over 20 years old) and come with all the idiosyncrasies of old formats.

‎11-18-2022

Have you tried updating the graphic drivers on your PC, especially if you have reinstalled ArcPro and nothing has changed?

‎11-18-2022

Thanks for confirming that it is the Get Field Value tool that is at fault. I agree if geometry is not honoured then the shape field should not be an option. I think the output data type list should be stream-lined to the only data types a Get Field Value tool can actually output. Also I would recommend that the help file is updated to explicitly state that geometry is not something that it can use.

‎11-15-2022

My original post is the workflow, its really that simple. In your reply your are extracting the extent of a layer I want to extract out a property of a geometry that happens to be in a featureclass at the first row. But it feels like you are getting distracted by the why case (which could be many). My question is simply does the model only tool Get Field Value honour the geometry column? I can choose polygons/points/lines but my simple model above fails and its not possible to determine if the Get Field tool is failing to output a geometry or its the Calculate Value tool failing to read a geometry object. You are passing in strings, I am not. Why would the Get Field tool allow me to choose the output data type if it can't actually pass it out as input into another tool?

‎11-14-2022

I'm with Dale on this, using centroid XY to create an ID. It is something I do when extracting nodes from a network as not only is it an ID it's also its location and you can remove duplicates by passing into sets for example. You can apply same logic to polygons and polylines. But always good to see other approaches.

‎11-13-2022

Are you expect negative Y values?

‎11-13-2022

I keep hitting a performance issue with ArcGIS Pro 3.0.2. I have a modern i7 computer with 32GB of Ram, so I'm pretty sure its not a hardware issue, or anything to do with graphic drivers. I do a lot of work with mapping rivers and something that works flawlessly in ArcMap is to colour code the river network by a specific attribute, such as catchment ID. In large network layers there may be many thousands of catchment ID's which means you have many thousands of symbols. ArcGIS Pro grinds to a halt when loading up >80,000 symbols to the point I just give up. Yet ArcMap loads that up no problem! How does a 32bit app out perform a modern, built from the ground up, 64bit app? Now before you all start saying who would want to visualise 80,000 symbols in a map layout, well no-one, including me, BUT it's very useful to colour code the data as such when analysing the data and visually working out why something else is happening. I've been throwing these sorts of symbology demands at ArcMap for years and its never let me down! ArcGIS Pro needs to be able to load up layers with tens of thousands of symbols in a couple of minutes, as right now I can't really do what I want to do. As way of example ArcMap loads up 80,000 symbols in about 2 minutes, Pro has been chugging away for over 30 minutes and nothing... DuncanHornby_0-1668382448879.png I'm going to bed... 😞

‎11-09-2022

Hi, I use the Get field tool as I only need to read the first row, which is what the tool does. My concern is that it appears that I can select the Shape field as the field to extract data from but it does not seem to output a geometry (polygon in my case) as when I feed it into the Calculate value tool it is Null? In your example what is a? I see you embed it in quotes. So from my testing its not clear if the Get Field tool is failing to output a geometry or its the Calculate Value tool failing to read a geometry object. In your example you are taking a string.

‎11-07-2022

Your model logic is flawed. Your sub-model with the iterator will loop as many times the iterator needs to loop, but the looping is occurring within the sub-model. Lets say there are 10 feature classes it loops 10 times and passes out the final shapefile to the master model which is feeding the shapefile into the Extract Values to Points tool. Typically sub-models would pass out a list of values using the collects value tool but the Extract Values to Points only takes a single layer as input. Therefore this tool needs to be directly connected to your iterator, i.e. your workflow does not require a sub-model.

‎11-04-2022

Hi All, Just wanted to check with someone to make sure I'm not making a school boy error. I have a very simple model in ArcPro 3.0.2, it is shown below. It uses the get field value tool to return the geometry which feeds into a Calculate value tool, in this simple case I am returning the area (to show the problem), but in reality I might actually be accessing some other property such as extent. DuncanHornby_0-1667566586747.png Note output of Get Field Value is a precondition to Calculate Value. The tools are as: DuncanHornby_1-1667566649009.png The input layer is nothing more than: DuncanHornby_2-1667566755951.png The model never completes as it appears to be returning a NULL geometry? Executing (Get Field Value): GetFieldValue test2 Shape Polygon # Start Time: 04 November 2022 13:00:44 Succeeded at 04 November 2022 13:00:44 (Elapsed Time: 0.01 seconds) Executing (Calculate Value): CalculateValue test(%polygon%) "def test(poly): return poly.area" Double Start Time: 04 November 2022 13:00:44 The process did not execute because the precondition is false. Succeeded at 04 November 2022 13:00:44 (Elapsed Time: 0.00 seconds) Tagging @ShitijMehta , @KoryKramer There is nothing in the help file to indicate that this tool does not work with the SHAPE field. I would have expected it to work with the SHAPE field as I am allowed to set the output data type to various geometry types?

‎11-02-2022

Reviewing your code, it looks like it should work, although you have unnecessary code within the loop. What does the line print (HR_FloodplainBounds_rasters) return?

‎11-02-2022

If you are asking to see a photo instead of a point on your map then I would suggest that is not a sensible idea. If you want to see the photo in the pop-up when you click on the point then yes this can be done. You need to read the help file on configuring the pop-up, have a look at the images section.

‎11-02-2022

Stefan, This is an IDEAS post not a place to ask questions, you need to be asking this under the appropriate question group, I'm guessing ArcGIS Online? Please migrate your question to there and delete your "idea" here.

‎10-28-2022

Just want to add to this thread, I discovered this technical article on the ESRI support site which enables developers to identify if layers have joins (including a spatial join). Unfortunately for ArcPro 3.0.2 it bombs out but the fix is easy! I have left feedback for the page to inform them the page is offering a bugged solution, lets hope someone reads it and corrects the error. For the record it is not source_table its SourceTable.

‎10-28-2022

You neglect to say which software you are using! If it is ArcMap then yes, you could create a python addin and create a combobox for a toolbar. If you are using ArcPro that's a bit more tricky, you could create a custom tool and add it favourites as discussed here. Alternatively you could explore creating a Task but I have personally not used these and for the sort of work I do see little value in them but they may be ideal for your situation?

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My Ideas

Latest Contributions by DuncanHornby

Re: Failing renaming shapefiles from catalog

Re: Model Builder GP tools showing black box

Re: Does the model only tool Get Field Value honour the geometry column in Arcpro 3.0?

Re: Does the model only tool Get Field Value honour the geometry column in Arcpro 3.0?

Re: Make a labelPoint function available in Arcade for attribute rules

Re: Problem with creating a Fishnet

Improve ArcGIS Pro performance when loading large number of unique values for symbology

Re: Does the model only tool Get Field Value honour the geometry column in Arcpro 3.0?

Re: iterate through shapefiles, raster with same names and perform extract multivalue to points using model builder

Does the model only tool Get Field Value honour the geometry column in Arcpro 3.0?

Re: Unable to loop through rasters to extract by mask

Re: Show Attachments from Related Table

Re: Arcade Endpoint() function

Re: Joins are changing name every time I run my script

Re: Model Builder Tool Question Simple Search

Re: GeoPackage (GPKG) versus File Geodatabase (GDB...

Re: GeoPackage (GPKG) versus File Geodatabase (GDB...

Re: Dissolve polygons only within a given distance...

Re: How do I remove purple border around chart?

Re: How do I remove purple border around chart?

ArcGIS Arcade

Coordinate Reference Systems