A few other things to look at regarding rendering topographic contour lines:
Where are you trying to look at the map (geographically speaking)? You didn't specify your callsign so I couldn't guess at where you are located to see what kind of slopes you have in your area. The vertical spacing between contour lines is not dynamically computed, but rather set manually in the View->Layers->Show Topography->Edit Topographic Colors dialog box. So if you are:
a. zoomed out a lot, and
b. have steep slopes in the area to be rendered, and
c. have a small value for the contour interval setting,
the contour lines on those steep slopes will be mashed together because the horizontal distance between contour lines (in screen pixels) will be less than the pixel size. Also, the renderer has to check rendering lines for every possible contour line between the minimum and maximum elevations on the screen, so the smaller the spacing between contour lines, the longer it will take to compute the contour lines because more levels of them will have to be computed. And more uneven terrain will guarantee that more lines will be crossing slopes, increasing the computation for those additional contour lines.
So, if it is just taking forever to render the contour lines and you are looking at hilly terrain, try enlarging the contour interval to reduce the computation.
Hope this helps.
Andrew, KA2DDO
author of YAAC
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From:
[email protected] <
[email protected]> on behalf of David Lowry via groups.io <huskyrunnr@...>
Sent: Tuesday, December 31, 2024 6:57 PM
To:
[email protected]Subject: Re: [yaac-users] Can’t get topo lines
Resolved. Wrong password to reach the NASA data, yet looked like it was downloading so didn’t think to check. Thank you again, your words explained a lot that I did not know about using this function. I also got the repeater finder working. No window would pop up until I moved from the toughpad “recommended” resolution of 150% to 100%.
David
