Latest Contributions by MervynLotter

A new capability was introduced into ArcGIS Pro 3.5 that allows you to create a spatial definition query. The definition query is defined spatially based on the spatial extent of another layer, or the extent of that layer in the map view. After opening up the layer properties, and the Definition Query tab, click on Add Clause and then select the new "Add Spatial Clause" drop-down. Then choose the layer and its spatial extent that you want to use for your definition query.  Importantly, once applied, do give it a unique name (instead Query 1) so that you can easily reuse this spatial query any other time again in the future.  Do see Spatially Filter Feature Layers with Definition Queries ... View more

Have you checked whether your point class contains any overlapping points? Maybe select one of the points in a "problem area", then open point attribute table to see how many points were selected. Something else to try would be running the polygon layer through the Repair Geometry tool to repair any errors in the layer that may be impacting the analysis. ... View more

If you have an Advanced license, then do consider trying the Tabulate Intersection tool for quickly finding the % overlap between two features classes. Do see Tabulate Intersection (Analysis)—ArcGIS Pro | Documentation The output percentage field may be over 100% if there are overlapping features so it will be important to first follow David's suggestion to assess the extent of overlapping polygons.  ... View more

We're concerned about how Esri plans to convert our perpetual concurrent licenses to temporary named user licenses. As our organization experiences financial challenges, we occasionally face significant delays in paying our annual maintenance. This shift could leave our users without access to ArcGIS Pro, creating significant frustration with us. We hope Esri will find a solution that benefits all users. ... View more

 Look into using Forest-based and Boosted Classification and Regression (Spatial Statistics)—ArcGIS Pro | Documentation. It may work for you. It is a rather amazing tool and can be used for prediction only, suggesting how important some variables are in explaining the phenomena you are assessing. Variables can be continuous or categorical.  It can even consider the distance form certain features as input variables (such as your specific land cover types) although you may need to extract these as individual layers.  Also look into creating scatterplots to simply assess correlations using scatterplots. These work on rasters too.  ... View more

Have you tried Select By Attributes?  Select Layer By Attribute (Data Management)—ArcGIS Pro | Documentation? I would use this tool to find all features meeting your requirements. You just need to set up the Where clause.  ... View more

When adding multiple rasters, look into using the Cell  Statistics GP tool  https://pro.arcgis.com/en/pro-app/3.4/tool-reference/image-analyst/cell-statistics.htm.  You can calculate mean, median, standard deviation, etc.  ... View more

Hi Albert The ability to calculate Unique values is very much part of these two tools, and I use it quite a bit. I agree that it is very important functionality in our workflows.    Can you not see the Unique option? ... View more

That does seem to be unusual behavior.  One can create "feature-linked annotation, where the annotation will update if the attribute changes, but that is not needed in this case. Simple annotation should work fine.  Once the annotation is created, you use the Annotation edit tool from the Modify Features options. You simply select and move the annotation and the annotation remains anchored to the actual feature. Perhaps you already tried this.    Another option to explore is using the Convert Labels to Graphics tool. This is very similar and you can also manually move the label around while the leader line remains anchored to the feature.  ... View more

Try running the Repair Geometry GP tool to see if that resolves it. What happens if you add these shapefiles to a new map? Do they still not show?  ... View more

Hi Craig A relate is quite different from a join in that a relate establishes a relationship between two features or a feature and a table, but it does not physically join them (if you were to open up the attribute table, you would not see the related features). You can query relates but the link/relationship is invisible. Joins on the other hand, add the fields from one feature to another feature or table. So if you open up the attribute table, you will see attributes from both.  I have used both but generally prefer Joins for my workflows.  As for data source, I am a little less sure about what Esri were intending, but I can guess to say that the features need to exist on disk somewhere (as opposed to Event layers or layers that are in memory only). You will notice in the next release of ArcGIS Pro, one can create temporary or in memory layers.  It is also possible that data source refers to its use in Model Builder, where the layer may not yet exist if the model has not run. And lastly, if you open up an attribute table in Fields View (Data Design > Fields), you can view the attributes based on the layer names, or the Data Source, and the Join tool will need to reference the actual raw attributes in the data source and not the layer in the map (which can be renamed to almost anything, with special characters, which are a nono in GIS). But this is my guess only and I may be wrong.  Best wishes, Mervyn ... View more

It sounds like you are trying to clip a tile package, not a raster.  I dont think you can use the Clip Raster tool for that.  I am aware that you can use th Create Mobile Map Package tool to clip a tile package using a polygon. There is a good chance it may work on a .tpkx file but I have not tested it.  Do see this thread for more details.  VTPK Clip - Esri Community ... View more

This great video from John Nelson may help Bing Videos Or go to YouTube and search for "How to Make this 3D Diorama of the Straits of Mackinac" ... View more

If the above approach does not work, do consider converting it to .tif using the Copy Raster GP tool (not the Clip Raster). Set the output extent in the environment settings. MrSid imagery is not a raster type that works well in Pro. ... View more