Changeset 4363


Ignore:
Timestamp:
Apr 10, 2007, 4:43:19 PM (17 years ago)
Author:
duncan
Message:

comments

File:
1 edited

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  • anuga_core/source/anuga/shallow_water/data_manager.py

    r4348 r4363  
    46504650
    46514651    In URS C binary the latitudes and longitudes are in assending order.
     4652
     4653    Note, interpolations of the resulting sww file will be different
     4654    from results of urs2sww.  This is due to the interpolation
     4655    function used, and the different grid structure between urs2sww
     4656    and this function.
     4657   
     4658    Interpolating data that has an underlying gridded source can
     4659    easily end up with different values, depending on the underlying
     4660    mesh.
     4661
     4662    consider these 4 points
     4663    50  -50
     4664
     4665    0     0
     4666
     4667    The grid can be
     4668     -
     4669    |\|    A
     4670     -
     4671     or;
     4672      -
     4673     |/|   B
     4674      -
     4675      If a point is just below the center of the midpoint, it will have a
     4676      +ve value in grid A and a -ve value in grid B.
    46524677    """
    46534678    from anuga.pmesh.mesh import Mesh
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