I just mean that if you combine zones there will be some overlap in the recorded measurements. I would obviously want the best recorded value to show up on the combined heatmap.
As an example:
Our office has two APs. If I take a measurement in between them, what shows up on the heatmap (if both are enabled) is the highest signal measured or extrapolated at the given point.
Now imagine that we had no APs here. I would place my survey AP on the left side of the building and take measurements of the entire left side, as well as some overlap into the right side as zone 1. Then I would place my survey AP on the right side of the building and take measurements of the entire right side, as well as some overlap into the left side as zone 2.
While examining these I will get a good idea of how far the coverage from each AP goes, but somewhere in the middle the zone1 will show better signal and other places zone2 will show better.
When you get to a bigger scale (I’ve measured as many as 25 different zones for a single site) you don’t want to submit 50 different images (signal level and SNR) to a customer, so I have to manually export each zones heat map, and select/copy/paste each zones results from the individual images onto the “clean” map image. Doing so I have to try to compare separate images and put it all together in a way that shows only the best signal possible for any given point on the map.
I hope this clarifies what I was talking about.
