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boutproject / BOUT-dev

BOUT++: Plasma fluid finite-difference simulation code in curvilinear coordinate systems
http://boutproject.github.io/
GNU Lesser General Public License v3.0
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ixseps not read from BOUT.inp when using a grid file #40

Open loeiten opened 9 years ago

loeiten commented 9 years ago

ixseps1 and ixseps2 are not read from [mesh] in BOUT.inp when using a grid file.

However, variables like symmetricglobal@ are read from [mesh] even when a grid file is specified. If this is intentional, it could maybe be mentioned explicitly in the manual?

bendudson commented 9 years ago

This is because ixseps1 and ixseps2 are read from a GridDataSource, which can be either a grid file or the options tree. SymmetricGlobal* and similar Mesh switches are always read from the options file.

Agree this should be documented somewhere (sorry)

Is a solution to always allow options in [mesh] to override variables in a grid file, or would that get too confusing?

On 16 March 2015 at 10:00, loeiten notifications@github.com wrote:

ixseps1 and ixseps2 are not read from [mesh] in BOUT.inp when using a grid file.

However, variables like symmetricglobal@ are read from [mesh] even when a grid file is specified. If this is intentional, it could maybe be mentioned explicitly in the manual?

— Reply to this email directly or view it on GitHub https://github.com/boutproject/BOUT-dev/issues/40.

loeiten commented 9 years ago

In my opinion it would be a good idea to allow for override or precedence. In worst case, a warning could be printed that a specific option is found in both the grid file and the BOUT.inp file, and that the option from BOUT.inp will be used