Upload new source data for existing layer

AlistairFox2

Ok my workflow is this:

1. I have existing feature layers all symbolized and popups set nicely in my AGOL account
2. Every month I want to refresh the data within
3. I would like to make a copy of the layer to a new month - remove the data and upload the new data

I can use the API to publish the new data as a new layer, name it and put it in the right folder. But all my symbology is now default symbol and I want to re-use the existing symbology. 

So can I:

1. save the symbology definition and use that to set this on the new layer as i upload it.
2. or, somehow delete all features from the old layer and load in the new features - hence layer setting such as symbology stays

AlistairFox2

Hi Atma

that's definitely put me on the right path. I can get the json dict properties of the old and new layers. But I'm stuggling with the update_definition. 

How do I update just the drawing definition part to use the previously set symbol. As below.

I've tried saving this to a json file and loading in an applying to update_definition but get an unable to retrieve feature error. Your right, a worked example here would really help.

Also; when i go to get the properties of the layer i get a token error. how do i generate a token and pass thru. 

  "drawingInfo": {

    "labelingInfo": null,

    "transparency": 0,

    "renderer": {

      "type": "simple",

      "symbol": {

        "imageData": "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",

        "xoffset": 0,

        "width": 20,

        "contentType": "image/png",

        "type": "esriPMS",

        "height": 19,

        "yoffset": 0,

        "angle": 0,

        "url": "632a2675cb74c05e5734e3b8b2acdcf2"

      },

      "label": "",

      "description": ""

    }

  },