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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
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To learn about what's going on, see About the Archive Site.
Hi Jon, sorry its taken so long to reply: regExp should work, it looks like you need regExp="NATL.*" or something (I never remember regexp expressions for more than 24 hours), as it is, it will only match a file named NATL. Ill try to deal more greacefully with the error. Jon Blower wrote:
Hi, As a follow-up question, should it be possible to use the regExp option in the <scan> element to only attempt to match filenames that match a given regular expression? I tried to do this with the example below, i.e.: <netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";> <aggregation dimName="time" type="joinNew"> <variableAgg name="temperature"/> <variableAgg name="salinity"/> <scan location="/path/to/files/" suffix=".nc" regExp="NATL" dateFormatMark="NATL_1_#ddMMyyyy" /> </aggregation> </netcdf> but it gave a different NullPointerException (in AggregationNew.java:51, version 2.2.17), which seems to be because the aggregation is not picking up any files at all. Should regexps work with joinNew? Thanks, Jon On 07/11/06, Jon Blower <jdb@xxxxxxxxxxxxxxxxxxxx> wrote:Hi John, Yes, this problem is still evident in 2.2.17 (I downloaded the toolsUI-2.2.17.jar file). Thanks, Jon On 03/11/06, John Caron <caron@xxxxxxxxxxxxxxxx> wrote: > Hi Jon: > > Can you check if you get the same error in the latest 2.2.17 release?> I have fixed some bugs in aggregation, but im not sure if thats one of them.> > thanks > > Jon Blower wrote: > > Hi all, > > > > I'm having problems working with NcML aggregations and the 2.2.16 > > version of the Java NetCDF libraries. I would like to aggregate > > files: > > > > NATL_1_28082006.nc > > NATL_1_29082006.nc > > NATL_1_30082006.nc > > ... > > > > along the time dimension. I tried an NcML file like this: > >> > <netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";>> > <aggregation dimName="time" type="joinNew"> > > <variableAgg name="temperature"/> > > <variableAgg name="salinity"/> > > <scan location="/path/to/files/" suffix=".nc" > > dateFormatMark="NATL_1_#ddMMyyyy" /> > > </aggregation> > > </netcdf> > > > > This gave me a NullPointerException: > > > > java.lang.NullPointerException > > java.util.Calendar.setTime(Calendar.java:1032) > > java.text.SimpleDateFormat.format(SimpleDateFormat.java:785) > > java.text.SimpleDateFormat.format(SimpleDateFormat.java:778) > > java.text.DateFormat.format(DateFormat.java:314)> > ucar.nc2.units.DateFormatter.toDateTimeStringISO(DateFormatter.java:184)> > > > ucar.nc2.ncml.Aggregation.crawlDirectory(Aggregation.java:817) > > > > I think I know why this is. There are other files in the same > > directory of the form "NATL_120_28082006.nc" and I think the > > aggregator is trying to match these. Can I arrange it so that only> > files that match the pattern "NATL_1_#ddMMyyyy.nc" are aggregated, and> > all others are simply ignored? > > > > I am reluctant to change the directory structure of my data because > > other applications may depend on it. > > > > Thanks in advance, > > Jon > > >> ===============================================================================> To unsubscribe netcdf-java, visit: > http://www.unidata.ucar.edu/mailing-list-delete-form.html> ===============================================================================> > -- -------------------------------------------------------------- Dr Jon Blower Tel: +44 118 378 5213 (direct line) Technical Director Tel: +44 118 378 8741 (ESSC) Reading e-Science Centre Fax: +44 118 378 6413 ESSC Email: jdb@xxxxxxxxxxxxxxxxxxxx University of Reading 3 Earley Gate Reading RG6 6AL, UK --------------------------------------------------------------
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