How to run my own Google Earth Engine Playground script when clicking on a plot?

This has been possible for a while although badly documented...

If one wants to customize a project to use different code on the Google Earth Engine Playground window than the one provided by Collect Earth it is possible to replace the default template with your own Playground code by adding a file called eePlaygroundScript.fmt in the CEP file that contains the project files. Thus this new code would be specific to the project yuou are working on.

The process if as follows. Take the Collect Earth Project (CEP) file and open it with you compression software of choice ( WinRAR, WinZIP, 7Zip ...)

Create new file called eePlaygroundScript.fmt. This file should be located in the root of the CEP file. This file must follow the same structure than the file used by default (see here).

So for instance if you wanted to use a different chart you would just add those lines to the code.

In the original file, there are a few lines where the Freemarker templating language is used. We recommend the advanced users to keep this code and just replace the other parts of the script.

The lines in question are:

• Today’s date so that the charts are drawn from 2000-01-01 until today

  var endTime = '${todayDate}';

• The definition of the geometry of the plot ( there is an array variable called placemark.shape that contains the coordinates of the corners of the rectangle)

  var plot = ee.Geometry.Polygon([ <#list placemark.shape as coord>

        [${coord.longitude}, ${coord.latitude}],
  

  
  ]);

• At the end of the script an instruction for zooming into the location of the top-left corner of the plot on the Playground map

Map.setCenter( ${placemark.shape[0].longitude},${placemark.shape[0].latitude}, 15);

The rest of the script is free from Freemarker instructions so it can be edited. Of course the plot variable will be handy for using in the analysis.

For help on how to create your own Playground script see the documentation from Google Earth Engine.

Dear Alfonso,

Thank you for the detailed explanation. I would like to add that this procedure only works with the latest version of Collect Earth (v. 1.2.4).

Best, Marcelo