What is the criteria for a spot height to be displayed?, Ive found them as low as 1,050' but there are many peaks far higher and rising more abruptly above the surrounding landscape with no info beyond shading, so what determines their appearance on the chart?

I agree that more spot heights would be very useful and a great aid to safety.

SD can only display the information provided by their data provider, which includes spot heights.

Mike
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We do not pick and choose spot heights. They are included in cartographic data which we license, and are generally designed to show mountain peaks or passes or other heights very different to those around them. There isn't a slider control we can use to simply increase or decrease their number.

You seem to be starting with the notion that SkyDemon would be like the CAA charts. I've got no idea where they get their spot height data from and as spot heights are very subjective (see my answer above) there's no reason why our selection would match their selection.

Not really, I am simply pointing out that the CAA charts do a better job of showing spot heights were they matter, it's not really that subjective

Ok, in that case please define "where they matter" and perhaps we can go from there to an algorithm everyone will agree on.