Image instead of geomap in a map chart
I am newbie to Tibco Spotfire from Qlik & Tableau. Since 2 weeks, i have been struggling on how to get the the (X, Y) coordinates from an image, like the one in attachment (here is the original link : https://www.tibco.com/blog/2015/02/05/thinking-spatial-non-geographic-re...). The point is to generate those coordinates (X,Y) from my own images in order to use them in map charts.
FYI: I am using Tibco Spotfire Desktop while waiting for Tibco Spotfire Analyst and Server to be installed.
Thank you, in advance, for your help.