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lutraconsulting / qgis-crayfish-plugin

Plotting and manipulating mesh data in QGIS.
http://www.lutraconsulting.co.uk/products/crayfish/
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Hec RAS 1D results not shown #191

Closed saberraz closed 6 years ago

saberraz commented 8 years ago

It needs a bit of investigation as I am not familiar how 1D results are mapped. Maybe @erpas can shed some light?

erpas commented 8 years ago

HDF file contains 1D results in paths: 1.Time series: /Results/Unsteady/Output/Output Blocks/Base Output/Unsteady Time Series/Cross Sections/

  1. Maxima: /Results/Unsteady/Output/Output Blocks/Base Output/Summary Output/Cross Sections/

These are tables of WSEL, average velocity and flow for all cross-sections that are interpolated linearly on triangles spanned between the cross-sections and described in block: /Geometry/Cross Section Interpolation Surfaces/

So there are no ready-to-use maps. Mapping would require choosing a target raster resolution, probing a DTM for each cell inside the triangles, interpolation of WSEL and finally checking if WSEL > DTM.

tstegman commented 7 years ago

Greetings,

I am interested in mapping HEC-RAS 1d and 2d results. Is this possible to do in QGIS with Crayfish? I understand the data is there and requires some extra work, but if more steps are taken is it possible to display both 1d and 2d with crayfish? Thanks for your time, This functionality would be a huge plus!

saberraz commented 7 years ago

hi @tstegman currently Crayfish only supports 2D results from HEC-RAS. We will look into 1D results at some point in future. If you'd like to fund the work for 1D results, please contact us.

RudyFrom3 commented 6 years ago

Hi Saber, I just emailed you an idea about a tool to burn 1D cross sections along a creek invert poly line.... (Are you aware of any tools outside of Hec-RAS that can do this ?)

PeterPetrik commented 6 years ago

From Crayfish 3.x release and QGIS 3.4 release, the rendering and styling is implemented in QGIS Core. The data reading and support is implemented in MDAL. Please reopen the ticket in QGIS bug tracker for rendering issues or MDAL for format support issues. Thanks.