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ValueDescription
NONE

Disables any intermediate grid before interpolation, i.e. the transform will go directly to what has been specified with keyword GRID.

Disables any truncation before the transformation

Warning

Use of In case a rotation is requested, INTGRID=NONE in combination with the ROTATION keyword is very expensive in resources and is not recommendedis ignored and defaults to INTGRID=AUTO.


AUTOAn intermediate FULL Gaussian grid is used, derived from the target GRID, by looking at the equivalent resolution. This is the default behaviour.

grid_name

Specifies a Gaussian grid name like F80, O80, N80, N640 etc. (like [FNO][1-9][0-9]*), supported by the MARS client. Specifies the intermediate grid, e.g. O96 for an Octahedral Gaussian with 96 lines between Pole and Equator.

SOURCESets the intermediate grid to Octahedral Gaussian with N=(cubic relation from input truncation)=T+1, e.g. from input T1279 INTGRID=SOURCE(=O1280)
OFFReserved MARS value that resets the value inherited, effectively removing the keyword from the request which then results in intgrid being set to AUTO.

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