My use case for this is to use horizontal lines for leveling handheld strip panoramas that include sea horizons. The horizon itself never seems to be detected as a horizontal line. Yet if I rotate the image, the find vertical lines function finds the horizon as a vertical line.

Maybe the question is why doesn't the point finding function find horizontal lines in the first place? What makes them different from vertical lines that they can't be found?

On 3/19/20 9:15 PM, Bruno Postle wrote:
I was bitten by this this week and needed to change lots of points
from vertical to horizontal. But I was doing something *really*
obscure (stitching handheld photos of architectural drawings).

We need to know your use-case, horizontal control points are
completely useless for most users, what can you possibly need them
for?

Weird, when I replied to this email, Abrimaal's quoted portion disappeared. Had to copypaste it back in.

On 19 March 2020 23:39:44 GMT, Abrimaal wrote:

> *Now I would like to select all lines and change the value to horizontal - > but select all does not work here. *
> I rotate the image back to 0°, the detected lines are still listed as 
vertical.

--
David W. Jones
gnomeno...@gmail.com
wandering the landscape of god
http://dancingtreefrog.com

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