Hello,
I am hoping that someone could help me streamline the process for updating symbology class values for an ArcGIS Pro project I am working on. I get new/refreshed data for this project on a monthly basis. The project is made up of 30 different layers, that are all connected to the same feature class. Each layer symbolizes the results of a different variable in that feature class.
Every month when I update the data of the feature class, I have to manually go through and update the min and/or max value of the symbology. Other than the min and max values, the other values of each category/class remains the same.
For example, if the below is the categories/data range, I would only have to make sure that the min and max are updated to reflect the new data.
Symbology Class Example:
5 (min) - 200 [Min changes, upper value remains the same from month to month]
201 - 300 [Lower and upper values remains the same from month to month]
301 - 500 [Lower and upper values remains the same from month to month]
501 - 679 (max) [Lower value remains the same, Max value changes]
Currently, I have to open up the symbology for each layer, and manually update the min and max values. This wouldn't be a big deal if it was couple of layers, but it becomes a bit time consuming given that it's 30 layers.
QUESTION:
Is there a way to use python or maybe Arcade to automate the update of only the min and max values of each layer symbology class?
Any help is greatly appreciated!!!
python.
Hi Carlos Bell ,
If you want to show 4 classes, whereas the internal class values don't change (just the min and max), this could be done with Arcade using an expression similar like this one:
var val = $feature.YourFieldContainingTheValues; // change this and point to your field
var class = "";
if (val <= 200) {
class = "<= 200";
} else if (val <= 300) {
class = "200 - 300";
} else if (val <= 500) {
class = "300 - 500";
} else {
class = "> 500";
}
return class;
It will not matter what the min and max values of the data is.