Welcome to the RAS Solution Forums HEC-RAS Help Mirror cross sections

  • This topic has 4 replies, 181 voices, and was last updated 6 years ago by Anonymous.
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  • #7383
    Anonymous
    Guest

    Hi all!

    I have a quick question regarding mirror cross sections. I have a river reach that on the left side has a natural bank and on the right side a retaining wall (always looking downstream). I have modelled everthing as it is, with the current geometric conditions. Now I want to run the model once again but this time I want to mirror my cross section, i.e. remove the retaining wall and create a mirror cross section with the same elevations and station spacing as the natural bank (all from the center line of each cross section). Is there a way to do this?

    I have already tried the Reverse Xs Stations and Cut Line option, however, my retaining wall is still in place. I do not want to manipulate algebraically my cross section as there is a georeference I will like to conserve and as I have what I consider a good number of cross sections to do it by hand.

    Thanks for the ideas!

    #12415
    Anonymous
    Guest

    No there is no way to do this automatically

    #12416
    Anonymous
    Guest

    Hi Luis, thank you for your reply. If somebody else has other information it would be greatly appreciated!

    #12417
    Anonymous
    Guest

    The other way is tedious but this is what you can do Mr. Anon

    -Copy and paste cross section data to excel

    -keep the station column on a separate row and cut the elevation data and paste it in another row

    -delete the elevation data from the channel CL to the end of the Right cross section

    -Copy the elevation data from station 0 to the center line and paste in another column

    -sort that column in order to flip it

    -paste data next to final station data and paste back into RAS

    …see no easy way. I didnt mention this at first because you REALLY have to know what your doing here in order to do this. Even the above steps may not get you what you want because there are intermediate things that are too hard to explain via text

    #12418
    Anonymous
    Guest

    I understand, I am doing it already in a similar fashion with Excel but if this happens again I believe it would be better spend time to set it up in a code (although the number of points is not the same from Xs to Xs). Thanks for your help Luis!

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