Copper distribution calculation

[Blackgar]

Recently I had some issues with the plating index (that's how Eurocircuits is measuring the copper distribution - https://www.eurocircuits.com/platingindex-_solutions/).

I had to re-upload many times the gerber files to see how the index is affected after changes.

Is there any way to calculate this index on Altium;

[free_electron]

There is special software to do that. https://www.elsyca.com/plate/pcb-plating

At panel level this is handled by the board manufacturer.

[Pseudobyte]

If my boards are really uneven I will do something like this, but I usually just eyeball the size of the thieving features.