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LineToPoint - incorrect values heading

E

Eugen_1975

Messages
24
Country
ukraine
Hi Arno.

I found that LineToPoint is generating incorrect values for the heading attribute.
1.jpg

If you create values for the heading attribute using the HeadingFromNearestLine operator, then the heading values are generated correctly.
2.jpg

Please note that the heading values obtained from the horizontal and vertical lines are almost the same and correct.
3.jpg
 
Hi,

Can you let me know which mode of the LineToPoint you are using? VERTEX, SINGLE or CONTINUOUS?

At first sight the code of the two steps to determine the heading is the same, so if you can provide me a little more background information on how you compare the two I might be able to reproduce it.
 
Hi Arno,
arno said:
Can you let me know which mode of the LineToPoint you are using? VERTEX, SINGLE or CONTINUOUS?
Click to expand...

VERTEX

arno said:
At first sight the code of the two steps to determine the heading is the same, so if you can provide me a little more background information on how you compare the two I might be able to reproduce it.
Click to expand...


For comparison, I used SBuilderX adding objects from XML, and lines from shp.
4.jpg

Let me know if you need the source data.
 
Thanks, I'll have a look.

I think in VERTEX mode for lines with multiple points scenProc will take the average heading of the two line segments that meet at that vertex. While the heading from nearest line doesn't do that.
 
arno said:
Я думаю, что в режиме VERTEX для линий с несколькими точками sceneProc будет принимать средний заголовок двух сегментов линии, которые встречаются в этой вершине.
Click to expand...
No - it happens even on straight lines that are divided into many segments.
 
Hi,

I can confirm I can reproduce the issue, let me see what causes it.
 
Hi,

I have found the bug, it will be fixed in the next development release.

You might still see a different between the heading from LineToPoint and HeadingFromNearestLine sometimes, as at end vertices two lines can connect. And the HeadingFromNearestLine does not always select the same line as was used in the PointToLine step.
 
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