Re: [las_users] automatic update of data file

[Jonathan Callahan <Jonathan.S.Callahan@xxxxxxxx>]

Hartmut,

There is no automatic way to have LAS update the time selectors in the 
interface.  But your approach of setting the time axis to be very long 
and the setting 'display_hi' out in the future should work.

Your problem may have to do with cacheing done by LAS or by OPeNDAP if 
you are using data from a remote server.  You may wish to turn off 
cacheing for some of your datasets  in order to prevent cache hits:

http://ferret.pmel.noaa.gov/LASdoc/serve/cache/35.html

This may solve your problem of not seeing the most recent data.


-- Jon


Hartmut Frenzel wrote:

> Hello LAS users and developers,
>
> on my LAS
> http://quercus.igpp.ucla.edu:8080/las/servlets/dataset
>
> I have one data set (Santa Monica Pier Station) that points to a data 
> file which is updated automatically every day. However, I can access 
> only data up to the date since I last ran "make" in the server 
> directory (Dec 21, 2005). The configuration file for this data set, 
> which is referred to in las.xml, looks like this:
>
> <datasets>
>     <id-7bc351d153 name="Santa Monica Pier Station"
>     url="file:/usr/data/SCCOOS/sm_pier.nc"
> generator="LASNetCDF.pm">
>     <variables>
>       <temp-id-7bc351d153 name="Temperature" units="degC" url="#temp">
>         <link match="/lasdata/grids/grid-lon-lat-time-id-7bc351d153" />
>       </temp-id-7bc351d153>
>     </variables>
>   </id-7bc351d153>
> </datasets>
> <grids>
>   <grid-lon-lat-time-id-7bc351d153>
>     <link match="/lasdata/axes/lon-x-id-7bc351d153" />
>     <link match="/lasdata/axes/lat-y-id-7bc351d153" />
>     <link match="/lasdata/axes/time-t-id-7bc351d153" />
>   </grid-lon-lat-time-id-7bc351d153>
> </grids>
> <axes>
>   <lon-x-id-7bc351d153 type="x" units="degrees_east">
>     <v>-118.499</v>
>   </lon-x-id-7bc351d153>
>   <lat-y-id-7bc351d153 type="y" units="degrees_north">
>     <v>34.008</v>
>   </lat-y-id-7bc351d153>
>   <time-t-id-7bc351d153 type="t" units="hours"
>   display_lo="2005-Apr-04" display_hi="2006-Dec-31">
>   <arange start="2005-Apr-04" size="100000" step="1"/>
>   </time-t-id-7bc351d153>
> </axes>
>
>
> -> The date range is to the end of 2006, so this is not the problem. 
> It seems that the range is fixed whenever I run "make".
>
> Is there a way to have it extended automatically to whatever the 
> latest entry in the netcdf data file is?
>
>
> Thanks in advance,
> -- Hartmut
>
>
> P.S.: I think it would be more helpful if on page
> http://ferret.pmel.noaa.gov/Ferret/LAS/ferret_LAS.html
>
> in paragraph
>
> Where do I get help using LAS?
>     Help is available through a users email list, the email list 
> archives, and answers to frequently asked questions.
>
> the "email list archives" link pointed to
>
> http://ferret.pmel.noaa.gov/cgi-bin/marc-search.cgi
>
> instead of
>
> http://ferret.wrc.noaa.gov/mail_archives/las_users/fu_2000/threads.html