SeeYou incorrect waypoint altitudes

On Sunday, February 2, 2020 at 1:12:02 PM UTC-8, Darryl Ramm wrote:
Post the actual waypoint data here... it’s just ASCII text. Then we have a chance of seeing what is going on.

Here is the waypoint
"Baden-Powell",Badenell,,3421.517N,11745.883W,2631.6m,1,, ,,,,,

actual altitude is about 2865 meters

There is nothing specific about this waypoint, so it really does not matter.. Just click around the map in SeeYou and add some random waypoints and then compare to google earth altitudes

On Sunday, February 2, 2020 at 5:26:08 PM UTC-8, soaringjac wrote:
On Sunday, February 2, 2020 at 1:12:02 PM UTC-8, Darryl Ramm wrote:
Post the actual waypoint data here... it’s just ASCII text. Then we have a chance of seeing what is going on.

Here is the waypoint
"Baden-Powell",Badenell,,3421.517N,11745.883W,2631.6m,1,, ,,,,,

actual altitude is about 2865 meters

There is nothing specific about this waypoint, so it really does not matter. Just click around the map in SeeYou and add some random waypoints and then compare to google earth altitudes

Yep you can't do that. The top of that mountain itself is barely the size of a single resolution grid in the NASA SAR data. We could have gotten straight here earlier...

9407' Google Earth 7.3.2.5776 (Mac) (also the official USGS height of the peak).
8634' SeeYou 10.32 (Windows)
-----
773' difference
-----

And the hight resolution Google earth data shows a higher elevation that SeeYou as expected.

Move off the sides a couple of hundred meters and you are at the elevation shown by SeeYou. A bit more that I might expect but that is damn steep terrain.

You really should be using the exact other turnpoint data that other local pilots are using from the Soaring Turnpoint Exchange, it's easy to remove extra turnpoints if you really have to. You don't want any possibility of confusion about location of a turnpoint if talking to nearby gliders. For other peaks I would always try to use the USGS official peak location and elevation data... glider pilots sometimes have amusing habits of creating their own names for less significant mountain peaks (how many "Black Mountains" do I know?).