topic Re: How do I change shape and color based on two different attributes? And how do I fix the color bar? in ArcGIS Pro Questions

How do I change shape and color based on two different attributes? And how do I fix the color bar?

GraceKowalski — Thu, 18 Jan 2024 18:51:02 GMT

Hello! I have ArcGIS Pro version 3.2, I believe. I'm trying to plot temperature data as a color and then sensor type as a shape. Say, for example, I have 8 sensor types. There are two I care about and want to make a triangle, the rest are circles. I think I found a way to do that by using "Unique Value" in the Symbology pane, then just changing the ones I want to which shapes I want. Then I want color to vary by temperature. I want to the "Vary symbology by attribute" pane to change color according to temperature. But then it makes the color look confusing, where it only labels the highest and lowest values, and the rest are just in the middle. I want to have the color bar range from 17-23 by 0.5 deg C intervals. Is there a way to do this? I tried in Arcade but got an error, so I may not know how to type in it. Also, just in general, is there any easier way to do this whole thing?

Screenshot for confusing color bar legend:

Screenshot of attempted Arcade code and error:

I would then go through and write code for it up until number 23, but I can't get past this first error. Thank you for any help!

Re: How do I change shape and color based on two different attributes? And how do I fix the color bar?

ZachBodenner — Thu, 18 Jan 2024 19:02:15 GMT

You're on the right track with your arcade expression, just needs some syntax tweaking. Try:

var temp = $feature.Temp When(temp >17 && temp <17.5,17,...,FINAL VALUE)

A When statement like this would enable you to group all of your bins together in one expression. replace the ... in the code above with as many pairs as necessary, so that you have a statement (eg. temp <17 && temp<17.5) and a return, which comes after the comma. When requires a default value at the end, so any values not captured by your expression will get that value.

Full disclosure, I haven't played around with varying symbology by attribute, but hopefully that Arcade helps you on the right track.

Re: How do I change shape and color based on two different attributes? And how do I fix the color bar?

GraceKowalski — Thu, 18 Jan 2024 19:59:10 GMT

Thank you for the help! I did get the Arcade code working, but it is unfortunately not improving the appearance of my legend. The whole middle group still does not get designated individual colors, and they just lump it all together.

Here is the legend:

And here is the code:

Re: How do I change shape and color based on two different attributes? And how do I fix the color bar?

ZachBodenner — Thu, 18 Jan 2024 20:05:41 GMT

I'm not sure if this will solve the legend issue, but it looks like you might have a slight problem of "dropping" values because you don't use an "greater than or equal to" type notation. Here's the list of Arcade operators:

https://developers.arcgis.com/arcade/guide/operators/

For example, in the second pair of you When statement, you'd want temp >= 17.5 instead of temp > 17.5

Also just to make your life easier, when you post code here, you can click the 3-dot-menu and then include your code using this button:

Then it's easier for everyone to copy-paste your code instead of typing out your screenshot!

Try changing around your operators and see what that does.

Re: How do I change shape and color based on two different attributes? And how do I fix the color bar?

GraceKowalski — Thu, 18 Jan 2024 21:52:45 GMT

Thank you again! That was good to point out. I went through and added the equal to operators, but the legend sadly didn't change. I wonder if there's a more simple fix that I'm just missing. And thank you for pointing out how to include code! I'll do that here.

New code:

var temp = $feature.temp; When(temp>17 && temp<=17.5, 17.0, temp>17.5 && temp<=18, 17.5, temp>18 && temp<=18.5, 18.0, temp>18.5 && temp<=19, 18.5, temp>19 && temp<=19.5, 19.0, temp>19.5 && temp<=20, 19.5, temp>20 && temp<=20.5, 20.0, temp>20.5 && temp<=21, 20.5, temp>21 && temp<=21.5, 21.0, temp>21.5 && temp<=22, 21.5, temp>22 && temp<=22.5, 22.0, temp>22.5 && temp<=23, 22.5, temp>23 && temp<=23.5, 23.0, temp>23.5 && temp<=24, 23.5, 24);

New legend (still looks the same where the middle is not separated):

Re: How do I change shape and color based on two different attributes? And how do I fix the color bar?

ZachBodenner — Thu, 18 Jan 2024 22:02:41 GMT

Are you able to package your data as a shapefile? I'd be interested to bring this into my Pro and check it out.

Re: How do I change shape and color based on two different attributes? And how do I fix the color bar?

GraceKowalski — Thu, 18 Jan 2024 22:09:02 GMT

I've been using it as a csv. If you want it in a shapefile, I'll have to learn how to do that first. I'm pretty new to ArcGIS, if you couldn't tell lol.

Re: How do I change shape and color based on two different attributes? And how do I fix the color bar?

ZachBodenner — Thu, 18 Jan 2024 22:25:30 GMT

Ah okay so how are you doing the symbolizing in this case? Or rather, how are you getting your CSV into Pro in a way that you can symbolize points? And yeah feel free to send it as a CSV, I can try to replicate your process.

Re: How do I change shape and color based on two different attributes? And how do I fix the color bar?

GraceKowalski — Thu, 18 Jan 2024 23:52:01 GMT

Sensor Type	Latitude	Longitude	Temp
AS	39.32802	76.62378	17.2437
CT	39.29136	76.63649	20.4375
GB	39.31143	76.6008	21.1562
AS	39.31575	76.61765	18.5781
DQ	39.32725	76.61148	20.6652
DQ	39.32678	76.67794	19.7483

This is an example table because I don't know how to attach the csv file. But I saved it as a csv, then used the "Add Data" button to add it into my GIS project. Then I used the "XYtoPoint" tool and used the longitude as x and latitude as y to plot each point. Then I did what I stated in my initial post. I only care about sensors DQ and GB. So I went and used "Unique Value" in the Symbology pane, just changing the ones I want to triangles. Then I went to the "Vary symbology by attribute" pane to change color according to temperature. And I used the arcade code to try and fix the legend.

Re: How do I change shape and color based on two different attributes? And how do I fix the color bar?

ZachBodenner — Fri, 19 Jan 2024 13:32:47 GMT

Ok got it, I'll let you know what I figure out!

When you're writing a post or replying, there's a file uploader at the bottom.

Re: How do I change shape and color based on two different attributes? And how do I fix the color bar?

ZachBodenner — Fri, 19 Jan 2024 14:49:27 GMT

Ok so the legend getting formatted this way kind of looks like expected behavior, at least when you check the "Show Legend" button in the Vary Symbology by Attribute pane. The next question is: what is the end result of the map you're making? There's a variety of ways to re-frame the issue you're having, but it would be helpful to know what you want the result to look like.

For example, you could just use the arcade you have now to set the available ranges, then change the symbols of the points to triangles:

Then if you only wanted some of the sensor types, you could use a definition query to only include the values you need:

When it comes to the legend, are you going to need to make a layout and print this? Will there be a lot of changes? You can manually build/edit a legend in the layout if you needed to.

Re: How do I change shape and color based on two different attributes? And how do I fix the color bar?

GraceKowalski — Fri, 19 Jan 2024 17:06:27 GMT

Thank you so much for spending all the time trying to figure this out! The end result of the map I'm trying to make is for DQ and GB to be triangles, while the rest are all circles. Then I want all points (circles and triangles) to share a color bar based on temperature. I was able to do all of that but, as was the recurring problem, the legend looked bad. I am going to make a layout, not to print, but to put in some presentations, where I want a legend present. Unsure of how many changes will occur. If you think manually editing a legend in layout is the best approach, I would appreciate any insight on how to do so! Thank you again!!

Re: How do I change shape and color based on two different attributes? And how do I fix the color bar?

ZachBodenner — Fri, 19 Jan 2024 17:30:11 GMT

Sure, okay so I don't really know exactly what the different sensor types are, but another option would be to copy the layer by right clicking it in the table of contents, and pasting it there so you have two of the same layer. Then you can switch the definition query of your new layer to be the opposite (ie. show only AS and CT) and change those symbols to circles:

Then, to make your legend easier to manage in the layout, you can change the Label value in the symbology pane (mine will look different than yours because you have more values in your CSV but you see the idea):

Then you go ahead and add a legend to your layout and there will be two legend items, one for each layer (and therefore groups of sensors).

Re: How do I change shape and color based on two different attributes? And how do I fix the color bar?

GraceKowalski — Fri, 19 Jan 2024 18:35:25 GMT

Ah! That sounds great!! Thank you so much!

Re: How do I change shape and color based on two different attributes? And how do I fix the color bar?

ZachBodenner — Fri, 19 Jan 2024 18:59:17 GMT

Great! If you consider that a solution the the question you initially proposed, make sure the click the Accept as Solution button so that others who find this can use it as reference.