SkyDemon Forums

What is the criteria for a spot 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?

http://forums.skydemon.aero/Topic23544.aspx

By Sky Painter - 6/11/2017 7:36:34 AM

SD can only display the information provided by their data provider, which includes spot heights.
By Tim Dawson - 6/12/2017 10:19:22 AM

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.
By Russ_H - 10/13/2017 10:38:07 AM

Tim Dawson - 6/12/2017 10:19:22 AM
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.

Understood, but why so few in comparison to the CAA charts?, I understand and appreciate the guard against clutter, but it would be usefull to have more spot heights in mountainous areas, these areas are generally not cluttered with other surface features anyway.
By Tim Dawson - 10/23/2017 10:35:58 AM

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.
By Russ_H - 11/26/2017 7:08:40 PM

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
By Tim Dawson - 11/27/2017 12:53:19 PM

Ok, in that case please define "where they matter" and perhaps we can go from there to an algorithm everyone will agree on.
By Russ_H - 6/8/2017 8:46:13 PM

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?