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Visualization

Visualization with Matlab

The directory Utility/Vis_Matlab/ has matlab scripts that can visualize outputs along a horizontal slab (at a fixed z level or at a sigma level) or vertical transects. In particular, SCHISM_SLAB2.m and SCHISM_TRANSECT2.m for for the new scribed outputs, while SCHISM_SLAB.m and SCHISM_TRANSECT.m are for the old outputs (schout*.nc).

Visualization with Python

[more coming]

Visualization with VisIT

The most comprehensive way to visualize SCHISM nc4 outputs is via VisIT.

Shortly after v5.9.0, we have successfully implemented a new mode of efficient I/O using dedicated 'scribes'. At runtime, the user needs to specify number of scribe cores (= # of 3D outputs variables (vectors counted as 2) plus 1), and the code, compiled without OLDIO, will output combined netcdf outputs for each 3D variable and also all 2D variables in out2d*.nc. Sample 3D outputs are: salinity_*.nc, horizontalVelX_*.nc etc - note that vectors variable names end with X,Y.

You can download newer versions of VisIT plugins c/o Dr. Jon Shu, DWR by following these steps:

On Windows 7 or 10

  1. First download VisIT from LLNL site and install. Use default dir (and record it), e.g. C:\Users\username\AppData\Local\Programs\LLNL\VisIt*
  2. Make sure MS visualc++ 2012 x64 is installed. If not, google it and install and restart (this is required for using multi-core VisIT)

  3. Download pre-built plug-in, developed at California Dept of Water Resource

    You need to put dlls on C:\Users\username\Documents\VisIt\databases. Alternatively, please email Jon Shu at Qiang.shu[at]water[dot]ca[dot]gov and let him know the version of visit you are using.

  4. After these steps, you'd be able to read in SCHISM outputs in ViSIT; look for SCHISM, gr3 format from the dropdown list. To load in vectors, select only the X file.

On Linux Systems

Newer versions can be found at the master branch of github.

Note

Note that the new plugins also work with the old I/O (combined schout*.nc).