Welcome to the RAS Solution › Forums › HEC-RAS Help › RAS-Mapper Editor Extremely Slow

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Viewing 7 posts - 1 through 7 (of 7 total)
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  • February 8, 2023 at 4:56 pm #17090
    Mikayla Lopez
    Participant

    I am following a tutorial by The RAS Solution on YouTube (https://www.youtube.com/watch?v=U-nmV-wSoS4&t=1449s) on how to create a river reach. At around 23:10 in the video, the instructor is quickly creating vertices by clicking along the river. However, when I try to recreate this step, my computer loads very slowly and I end up having to wait over a minute between clicking each point. I’m not sure if this is an issue specific to me or if anyone else has experienced this. One theory I have is that my terrain file is too large (60,887 kb) and may be causing the program to run slowly. I downloaded my geotiff terrain file from usgs and it covers an area much larger than what I need, but I’m not sure how to crop a geotiff file while still maintaining the file quality. Any advice or thoughts would be greatly appreciated!

    February 9, 2023 at 2:47 pm #17098
    Eric R
    Participant

    Mikayla. Do you keep the satellite image layer on? This generally slows down the rasmapper. Also, wouldn’t you be able to work with a smaller terrain, limited to the area you will simulate? This can be done, for example, in QGIS. I am not referring to decreasing terrain accuracy, but to cropping the image so that it is limited to just the region of interest. Another aspect: are you working on an SSD or a conventional hard disk? Consider working on an SSD; this greatly speeds up the processing and reading time of data by HEC-RAS.
    Hope these starter tips help you.

    February 10, 2023 at 8:54 am #17100
    Eric R
    Participant

    Additionally, to crop the terrain you can use the idea put in this video: https://youtube.com/shorts/1GWINC3Txi8?feature=share

    February 13, 2023 at 8:29 pm #17106
    Mikayla Lopez
    Participant

    Hi Eric, thank you so much for your response. I followed the video link you sent which is exactly the type of terrain crop that I was hoping existed within the program. I think it may have helped marginally, but unfortunately it didn’t seem to solve the issue completely. I also noticed that the RASMapper slowness issue only occurs when I am in edit geometry mode. I’ll keep looking for a solution and will update if I find one.

    February 13, 2023 at 9:06 pm #17107
    Eric R
    Participant

    What version of HEC-RAS are you working on?

    February 13, 2023 at 11:28 pm #17108
    puja singh
    Participant

    I need the time-series outputs at a few cross-sections to be saved as a txt file. I need help for searching and calling the right parameters from .hdf files

    February 16, 2023 at 8:22 pm #17138
    Mikayla Lopez
    Participant

    I am using HEC-RAS version 6.2

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