[OR] Offset line length definition behavior

Using Geopak SS4 .878.

Bear with me on my explanation here. I'll make it as clear as possible, and I apologize if this has been reported as I couldn't figure out how to search for it.

I have a line that was created from the Single Offset Partial tool. Rather than using stationing, I snapped a specific point to begin the line to the left of the baseline, and supplied a specific length. In short, the start station is higher than the end station.

After retooling some of my linework, I found that I need this line to be anchored by a different point, and I need the specified length to be pointing forward (so that the end has a higher station than the beginning) rather than backward.

What I find is that I can locate the end of this line anywhere I want, but if I enter any positive or negative length value, Geopak takes the absolute value as a positive value and reverts to running opposite the baseline direction and the start station is again higher than the end station.

Has this been previously observed and reported? To be honest I wasn't sure how to look this up.

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  • This could be utterly irrelevant and I don't have a chance to test it right now...
    What happens if you use the Change Curve Direction tool (from regular Microstation: Tools -> Curves -> Modify Curves -> Change Curve Direction)?

    MaryB

    Power GeoPak 08.11.09.918
    Power InRoads 08.11.09.918
    OpenRoads Designer 2021 R2

        

  • Thanks for the suggestion. I tried it just now and there was no effect. 

    I created an entirely new line in the file I'm working in. This time I made the offset start at a lower station than the end. Then I did the key-in "change direction", selected the offset line, switched the direction, then accepted. I changed the length to 100'. The stationing direction remains the same.

    Then I did the same operation on the line that the offset was from. Still no change. No matter what I enter for the length (positive or negative), it always reads the absolute value and has it go always in the same direction.

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  • Thanks for the suggestion. I tried it just now and there was no effect. 

    I created an entirely new line in the file I'm working in. This time I made the offset start at a lower station than the end. Then I did the key-in "change direction", selected the offset line, switched the direction, then accepted. I changed the length to 100'. The stationing direction remains the same.

    Then I did the same operation on the line that the offset was from. Still no change. No matter what I enter for the length (positive or negative), it always reads the absolute value and has it go always in the same direction.

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