So that the program `eddy_graph` can read it, instead of deducing it
from the longitude coordinate.

Instead of deducing it from the longitude coordinate. The deduction
could not be generalized to a non-uniform longitude-latitude
grid. Also, the test on `step(1)` and nlon was not perfectly robust.

We are trying to simplify the logic in program `inst_eddies`. Also,
the program `inst_eddies` should not write `grid_nml.txt` to the top
level of the SHPC directory since several instances could run in
parallel for several slices. So we are leaving it as a task for a
script above `inst_eddies` to create `grid_nml.txt` at the top level
of the SHPC directory. In tests, we have to move `grid_nml.txt` to
SHPC because we use `SHPC/grid_nml.txt` in other tests.

Always read coordinates from NetCDF file and create `grid_nml.txt`. Do
not try to read `grid_nml.txt`. Reverting part of commit c4410682. We
are trying to simplify the logic in program `inst_eddies`.

We want to be able to run `inst_eddies` from a directory other than
the directory containing the SHPC to be appended to. Preparing to
write `grid_nml.txt` and `used_config_nml.txt` in the current
directory. To be able to do this in parallel for several slices, we
need to be running in different directories.

Instead of reading command line arguments in procedure `input_ssh`,
read them outside and pass file names to `input_ssh`. This allows
`input_ssh` to be called by programs with different number of command
line arguments, in different positions. Preparing to make the
specification of uv-file optional.

Lionel GUEZ authored 6 months ago and GUEZ Lionel committed 6 months ago

Reverting part of commit c4410682. We want to extend the program to a
non-uniform or non longitude-latitude grid. Checking equality of whole
longitude and latitude arrays, one or two-dimensional, seems a little
bit too much.

`MAX_RADIUS_deg` is not general enough for a non longitude latitude
grid. The variable `max_radius` moves from module `input_ssh_m` to
module `config_m`. The variable `MAX_RADIUS_deg` disappears. The
constraint `2 * max_radius_deg(1) < 180` becomes `4 * max_radius(1) <
nlon` but is only applied to the periodic case because we do not have
the general equivalent of 180° in number of points.

In procedure `get_var`.

Promote nlon and nlat to variables of module `input_ssh_m`, avoiding
their repeated computation.

Preparing to allow access to variables of module `input_ssh_m`.

Lionel GUEZ authored 9 months ago and GUEZ Lionel committed 8 months ago

Promote corner from dummy argument of `input_ssh` to variable of
module `input_ssh_m`. The dummy argument corner of `set_all_extr` is
also removed, since `set_all_extr` now accesses corner from
`input_ssh_m`. Motivation: preparation to access the corner of NetCDF
files from `get_1_outerm`.

Demote dummy arguments nlon and nlat of `input_ssh` to local
variables. nlon and nlat are no longer used in main program unit
`inst_eddies` since commit 03033711.

Instead of symbolic links. We want to avoid creating symbolic links
above SHPC because we want to run several instances of `inst_eddies`
in parallel.

Following update of NetCDF95.

Remove procedure `write_aux`. Write to `ishape_last.txt` in procedure
`write_snapshot` and write `grid_nml` in procedure `input_ssh`. In
`input_ssh`, if `grid_nml.txt` already exists, check consistency with
input NetCDF files. Downgrade dummy arguments `corner_deg` and
`step_deg` of `input_ssh` to local variables. Read and write
`grid_nml` at SHPC level, only one file for both orientations and all
slices.

Extract code from program `inst_eddies` into new procedure `input_ssh`.