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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
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Hi Ben, Niels, To answer Ben's question from way back: "Sean, do you expect aggregations to behave the same as single files with the same Conventions? It looks like Niels has identified a difference." Yes, that would be what I expect. However, when the aggregation is done. The difference that Niels notes is a little disturbing. It's also possible that my understanding of the aggregation code and how it works is not quite right. Niels, Is there any way I could get the files you are trying to aggregate to debug locally? We'll get this figured out one way or another, Sean On Wed, Sep 28, 2016 at 7:16 AM, Sean Arms <sarms@xxxxxxxx> wrote: > Hi Niels, > > I apologize for the delay. We've been preparing for our User Committee > meeting (which just finished), and I've been preparing for surgery (this > Friday). I'll be taking a look at this today. I'm not yet totally clear on > what is happening in the code, so it will take some time, but I will focus > on this until it's figured out. If anyone else is interested in digging in > too, that'd be great. > > Sean > > > On Wednesday, September 28, 2016, Niels Charlier <niels@xxxxxxxxx> wrote: > >> Hi, >> >> Can anyone on here please advise whether they think the issue below is a >> fault in the .ncml, in geotools or a fault in netcdf-java? >> I can see exactly what is going wrong in the debugger, but I am not sure >> where the fault lies. >> Really need some help on this one. >> >> Kind Regards >> Niels >> >> On 08-09-16 14:51, Niels Charlier wrote: >> >> removal of the "time" variable in the aggregation (see commented line in >> attached .ncml file) >> >> This issue is related to the previous one, it is again about >> *makeCoordinateSystemsImplicit* versus *makeCoordinateSystemsMaximal*. >> >> * If the "time" variable is included as aggregation variable, it also >> gets the "runtime" dimension added to its dimensions. >> * As a consequence, netcdf-java does not recognise it as an AXIS. >> * As a consequence, *makeCoordinateSystemsImplicit *fails to include >> it in the CRS's for the actual variables (water_u, salinity, etc...). >> * As a consequence, *makeCoordinateSystemsMaximal *creates a CRS for >> these variables. However, it puts the dimensions in the order of the >> *dimension >> variable* list >> (rather than the variable's own dimensions), which is completely >> arbitrary as far as I can see. >> * "runtime" ends up as the last axis instead of the first. This is >> inconsistent with the order of dimensions in the variable. Geotools fails >> on this inconsistency. >> >> I am not sure whether the fault here lies with the .ncml file, >> geotools or netcdf-java. >> >> >>
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