Latest Contributions by DuncanHornby

‎05-03-2024

If it really is one point and the label you want to display is information that does not exist in any part of any attribute then you can simply type the text as shown below. But this approach in my opinion is you being slack and that will only come back and bite you... What happens if you want to share this data or some other might want to do some spatial processing with your data? Your label exists nowhere but in the layer in the project. I would create a new field and populate it with the text that will become the label. Then it is clear where the label is coming from and becomes useful information that you or others can take advantage of.

‎05-03-2024

I suspect there are several ways to resolve this and some clever SQL. But this is how I would do it. Firstly the table needs to be a file geodatabase table so you can add a new field. So If your data is in Excel then you need to export it. Add a new field, call it keep and set it to SHORT. The following logic takes advantage of the fact you have pre-sorted the data. Open field Calculate tool and apply the following to keep field. The code block is: count = 0 last = 0 def tag(month): global count,last if last == 0: # First row last = month count = 1 keep = 1 elif (month == last) and (count < 5): keep = 1 count += 1 elif (month == last) and (count >= 5): keep = 0 count += 1 elif (month != last): keep = 1 count = 1 last = month return keep Now run a simple select by attribute to select rows where keep = 1 Export selection to a new table.

‎05-02-2024

Your model is using inline variable substitution as you have %Name% at the end of the raster dataset name. But nowhere in your model do you have a variable called Name with a value to substitute into. Add a text variable called Name to your model, fill it with simple text, e.g. water and the output raster will ultimate be called dp_water.

‎05-02-2024

To add to Dales answer you probably want to export the data to make it permanent otherwise it only exists as temporary layer in the map.

‎04-25-2024

A possible solution to this is to reclassify your rasters before you do the mosaic. You want to be reclassifying the VALUE field (this being the field that holds the pixel value) into the value you have in your CLASSVALUE field. So taking your P71 example VALUE becomes 1 when it was 0, 2 when is was 1 and so for. I would do all this from backed up versions just in case you mess up the reclassify. Then when happy delete the backups.

‎04-25-2024

Looks like you have found a possible bug in Arcpro and how the different tools reconcile the relation Are Identical to. I would say you should edit your question and include the test data as a zip file for people to test to see if others can replicate the issue and discount if it is a hardware issue.

‎03-27-2024

Want to bump this up as recently I have found the need to reclassify range of pixel values into floats and was surprised to discover the reclassify tool only supports integer format as output. I have a work around but it would be good if the reclassify and reclassify by table accept floats as an output format.

‎03-27-2024

I think may be an alternative approach to this idea that achieves the same end result is to continue allowing tools to export with metadata but have a tool (and a UI button) that clears the metadata to a default "nothing", as if you have just created the dataset for the first time.

‎03-27-2024

On the back on this Q&A I wish to suggest the following idea, allow users to choose a larger number of bins in a histogram and not be constrained to 64 bins. I understand performance may degrade but sometime its helpful to push the number up. If a larger number is selected it would not be unreasonable for a warning to pop up and warn you that arcpro may become slower or unresponsive?

‎03-26-2024

I have a large float raster, there are 903,908,029 cells with a float value and using the create chart from the contents pane for the raster layer I can create a histogram. There is a slider to change the number of bins. I cannot move it beyond 34. By that I mean if I drag it to the end it says 64 then after it has recomputed the histogram it jumps back to 34. Why can't I change it to say 100 bins? The help file states: The number of bins defaults to the square root of the number of records in your dataset. You can adjust this by changing theBinsvalue on theDatatab of theChart Propertiespane. Changing the number of bins allows you to see more or less detail in the structure of your data. This statement seems to imply I can change it to what ever I like, but clearly it's constraining it in some way. Can someone from esri explain why this is happening as it appears not be documented in the help file (or I missed it)?

‎03-14-2024

Anyone from the geoprocessing\python esri team have a solution to this? If you have a toolbox (atbx) with dozens of embedded scripts how to do you en masse encrypt all scripts? I'm regularly hitting this problem and in need of a solution.

‎03-14-2024

Whilst ESRI ruminate on this idea, are you aware of whitebox tools? They have a tool that does exactly what you want RasterToVectorPolygons that will take a float raster. Its free and has been exposed as a geoprocessing toolbox which you can download here. You will be forced to accept it's limitations, for example it takes a tif as input and outputs shapefile, which are known to have size limitations. I tested on a small section of a DEM which is float32 The result is: I tried it on a larger section of DEM and it seemed to lock up but that was probably me being impatient. You might find if you have to process large rasters your existing work flow whilst irritating may be the fastest approach?

‎03-13-2024

Seems alright to me. Remember a multi-value comes back as semi-colon separated, so first thing I tend to do split it into a list. You can add the following line to your execute function to get an idea of what is returned. arcpy.AddMessage(account_numbers.split(";"))

‎03-13-2024

Your idea is unlikely to get traction. A float raster is typically some sort of surface where every pixel has a different value. Yes you might get areas where there are clusters of pixels with the same value but I would imagine that is an exception rather than a rule. So taking an elevation raster I have at hand it has 6558 cols by 12150 rows. That could very easily end up outputting a polygon dataset with 79,679,700 polygons! Start messing around with lidar derived data and you could end up with billions of polygons.

‎03-13-2024

When you select a feature layer in the Contents pane the Ribbon shows a Data tab for which you can access a variety of tools, a button I use almost hourly is the Attribute Table button that simply opens the attribute table. Yes I know I could have done CRTL+T or right clicked on the layer but the ribbon is what I tend to use. Now an Integer raster typically has an attribute table which I will want to view and interact with it. For example select a row and that selection feeds into the zonal stats tool. The ArcPro user experience is not the same when you access a raster layer, there is no button to open the attribute table associated with the raster. I would like to see an open attribute table button in the ribbon. Happy for it to be greyed out when raster is a float, that makes sense. Now I know I can customise the ribbon and add such a button but for the sake of having a consistent user experience such a button should be part of the default interface, no one should need to be messing around with creating custom groups for a button that gets used by everyone every day!

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My Ideas

Latest Contributions by DuncanHornby

Re: Custom text for labels?

Re: Selecting maximum values of a field, by group

Re: Error trying to use raster calculator and classify the output with ModelBuilder

Re: Issues with joining a table to a feature class

Re: Merge classified rasters with differing number of classes

Re: Spatial Join and Select By Location - Getting Different result count

Re: Floating point reclassify for raster

Re: GP environment setting to export FC without metadata

Enable histograms to have a larger number of bins

Setting Bin on a histogram for a raster

Re: Make arcpy.EncryptPYT() and arcpy.DecryptPYT() work with atbx toolboxes

Re: Raster to Polygon, enable none Integer transfers

Re: How to Handle MultiValue Parameters in Python Toolbox Tool

Re: Raster to Polygon, enable none Integer transfers

Add an open attribute table button to ribbon for rasters layers

Re: Can I draw a graphic line to be a certain leng...

Re: Modelbuilder - Get Field Value tool won't list...

Re: Is the new ArcGIS Pro 3.6 model builder comple...

Re: Extract by Attribute Won't Work

Re: Mobile or File Geodatabase Views: Grab earlies...

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