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Re: [las_users] Re: [ferret_users] limit on storage
Hi Jerome,
Adding one detail to Ansley's words:
There is a Ferret qualifier "USE/REGULART" (or equivalently SET
DATA/REGULART) that can be used to assert that a time axis is regular,
bypassing the check in Ferret. If the appropriate attribute is absent
from the netCDF dataset (time:spacing="regular", as I recall) then this
qualifier tells Ferret to behave as if it were present. Try that
interactively on the file in Ferret. If it does what you need, then put
it into a custom "init" script OR (better) use NCML with TDS to add in
the COARDS attribute into the dataset itself.
- steve
====================================================
Ansley Manke wrote:
Hi Jerome,
Yes, we're aware that this is becoming a problem for some datasets.
It's not an easy one for us to resolve, however.
If the data were regularly spaced this would not be an issue at all.
Does the data you're aggregating have truly irregular time steps?
Sometimes the times are in fact regularly spaced, but irregular
spacing comes in because of gaps in the time series. If that's the
case we can probably work out a way to deal with the data.
Ansley
Jerome King wrote:
Hi Ferreters and LASers,
I am not a Ferret expert as I have rarelly used it. I have been
dealing indirectly with it because of the customization I do with the
Live Access Server.
With new technologies such as THREDDS that allows to aggregate
several datasets together, one can end up with really big files with
a lot of time steps.
I have been reaching the infamous error message several times now:
**TMAP ERR: limit on storage for coordinates has been
reached MAX=750000
I am aggregating unevenly spaced data over time which probably makes
things worse.
I was wondering if anyone found a way around this problem or if the
Ferret developers plan on improving this. There is a message in the
archive about using dynamic storage and this may solve the issue. Are
there any updates about this?
Thanks a lot!
Jerome King.
--
--
Steve Hankin, NOAA/PMEL -- Steven.C.Hankin@noaa.gov
7600 Sand Point Way NE, Seattle, WA 98115-0070
ph. (206) 526-6080, FAX (206) 526-6744
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