https://community.esri.com/t5/arcgis-api-for-python-questions/how-to-update-legend-when-the-data-for-the-layer/m-p/1150110#M7196 <P>i am working with imagery layers and i am overwriting this layer and publishing it to the portal using a script. Each time i republish it, the layer has a new data so the old legend that was created for the service is no longer valid. I want to be able to update the legend whenever the service is republished for my map so that i can later use it in apps like Webappbuilder.&nbsp; I have this workflow in mind.</P><P>go through the data which is being used for publishing and search for the values minimum and maximum.</P><P>create the layer file and change the symbology using classes based on the maxmim and minimum.</P><P>create a legend and publish the data and save to existing map using the script.</P><P>&nbsp;</P><P>Unfortunately i am unable to figure out how to do as i am new to the esri API's. my service has a StretchColorizer. i tried changing it and i cannot. Is there a way i can automate this whole procedure of changing the legend based on the new data values in my data?&nbsp;</P> Thu, 03 Mar 2022 10:00:01 GMT RehanChaudhary 2022-03-03T10:00:01Z https://community.esri.com/t5/arcgis-api-for-python-questions/how-to-update-legend-when-the-data-for-the-layer/m-p/1150110#M7196 <P>i am working with imagery layers and i am overwriting this layer and publishing it to the portal using a script. Each time i republish it, the layer has a new data so the old legend that was created for the service is no longer valid. I want to be able to update the legend whenever the service is republished for my map so that i can later use it in apps like Webappbuilder.&nbsp; I have this workflow in mind.</P><P>go through the data which is being used for publishing and search for the values minimum and maximum.</P><P>create the layer file and change the symbology using classes based on the maxmim and minimum.</P><P>create a legend and publish the data and save to existing map using the script.</P><P>&nbsp;</P><P>Unfortunately i am unable to figure out how to do as i am new to the esri API's. my service has a StretchColorizer. i tried changing it and i cannot. Is there a way i can automate this whole procedure of changing the legend based on the new data values in my data?&nbsp;</P> Thu, 03 Mar 2022 10:00:01 GMT https://community.esri.com/t5/arcgis-api-for-python-questions/how-to-update-legend-when-the-data-for-the-layer/m-p/1150110#M7196 RehanChaudhary 2022-03-03T10:00:01Z