Initial Conditions and Climatology Scripts: Difference between revisions
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<section begin=roms2roms.m />;;<span id="roms2roms"></span><span class="blue">roms2roms.m</span> | <section begin=roms2roms.m />;;<span id="roms2roms"></span><span class="blue">roms2roms.m</span> | ||
:Interpolates requested 2D or 3D variable between two ROMS application grids. The receiver grid must be inside of the donor grid. This function is intended for down-scaling or nesting applications. The horizontal/vertical coordinates for the donor and the | :Interpolates requested 2D or 3D variable between two ROMS application grids. The receiver grid must be inside of the donor grid. This function is intended for down-scaling or nesting applications. The horizontal/vertical coordinates for the donor and the receiver grids are specified with array structures <span class="green">D</span> and <span class="green">R</span>, which are built elsewhere using the script [[Grid_Processing_Scripts#get_roms_grid|get_roms_grid.m]] for efficiency and functionality. <br /> | ||
::<span class="green">V</span> = <span class="red">roms2roms</span> (<span class="green">ncname</span>, <span class="green">D</span>, <span class="green">R</span>, <span class="green">Vname</span>, <span class="green">Tindex</span>, <span class="green">Rvector</span>, <span class="green">method</span>, <span class="green">offset</span>, <span class="green">RemoveNaN</span>) | ::<span class="green">V</span> = <span class="red">roms2roms</span> (<span class="green">ncname</span>, <span class="green">D</span>, <span class="green">R</span>, <span class="green">Vname</span>, <span class="green">Tindex</span>, <span class="green">Rvector</span>, <span class="green">method</span>, <span class="green">offset</span>, <span class="green">RemoveNaN</span>) | ||
:'''On Input:''' | :'''On Input:''' | ||
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:::<span class="red">linear </span> - linear interpolation (default) | :::<span class="red">linear </span> - linear interpolation (default) | ||
:::<span class="red">nearest</span> - nearest-neighbor interpolation | :::<span class="red">nearest</span> - nearest-neighbor interpolation | ||
::<span class="green">offset</span>: Number of extra points to | ::<span class="green">offset</span>: Number of extra points to use to sample the donor grid so it is large enough to contain the receiver grid (default 5) | ||
::<span class="green">RemoveNaN</span>: Switch to remove '''NaN''' values from interpolated variable with a second interpolation step using the nearest-neighbor method (default false) | ::<span class="green">RemoveNaN</span>: Switch to remove '''NaN''' values from the interpolated variable with a second interpolation step using the nearest-neighbor method (default false) | ||
:'''On Output:''' | :'''On Output:''' | ||
::<span class="green">V</span>: Interpolated requested 2D or 3D variable<section end=roms2roms.m /> | ::<span class="green">V</span>: Interpolated requested 2D or 3D variable<section end=roms2roms.m /> | ||
Revision as of 12:49, 2 May 2012
Matlab: Initial Conditions and Climatology Scripts
This page describes several Matlab scripts to process ROMS initial conditions and climatology data.
- roms2roms.m
- Interpolates requested 2D or 3D variable between two ROMS application grids. The receiver grid must be inside of the donor grid. This function is intended for down-scaling or nesting applications. The horizontal/vertical coordinates for the donor and the receiver grids are specified with array structures D and R, which are built elsewhere using the script get_roms_grid.m for efficiency and functionality.
- V = roms2roms (ncname, D, R, Vname, Tindex, Rvector, method, offset, RemoveNaN)
- On Input:
- ncname: Donor grid NetCDF file name containing variable to process (string)
- D: Donor grid structure containing all horizontal and vertical variables (struct array)
- R: Receiver grid structure containing all horizontal and vertical variables (struct array)
- Vname: Field variable name to process (string)
- Tindex: Time record index to process (scalar)
- Rvector: Switch to Interpolate U- and V-points variables to RHO-points to facilitate rotation in curvilinear grid applications elsewhere (logical)
- method: Interpolation method in TriScatteredInterp (string):
- natural - natural neighbor interpolation
- linear - linear interpolation (default)
- nearest - nearest-neighbor interpolation
- offset: Number of extra points to use to sample the donor grid so it is large enough to contain the receiver grid (default 5)
- RemoveNaN: Switch to remove NaN values from the interpolated variable with a second interpolation step using the nearest-neighbor method (default false)
- On Output:
- V: Interpolated requested 2D or 3D variable
