[IDV #PAR-344847]: Error with my own data chooser

Hi Howard-

> You are right. The returned CSV contains the header only. there was no real 
> data.
> The problem disappeared after getting data.

I put in a check for this so the error is a bit more understandable.  It will
be in the next nightly build.

Don.

> Unidata IDV Support wrote:
> > Hi Howard-
> >
> >> I got the following error with clicking "Add Source" button with my own 
> >> data chooser (referenced WxTextChooser &
> >> MesowestChooser). What could be the cause and how toi resoove this?
> >
> > It looks like the number of observations you got back was 0 and we don't 
> > check for that, thus the error.  We should probably pick that up.  Is there 
> > a way you can print out the CSV structure that you are sending to 
> > TextPointDataSource so I can track this down a little further (e.g., 
> > whatever the URL sends back).  I assume I can't get to the server from here.
> >
> > Don Murray
> >
> >> There was an error loading the data:
> >> Error creating data source:FILE.POINTTEXT with:
> >> http://maui:8080/obsServer/download?dataType=ATECLightning&startTime=2009-24-24T17%3A28&endTime=2009-24-24T17%3A28
> >> Making grid parameters
> >> GriddedSet: each grid length must be at least 1 (length#0
> >> is 0
> >>
> >>
> >>
> >> visad.SetException: GriddedSet: each grid length must be at least 1 
> >> (length#0 is 0
> >> at visad.GriddedSet.init_lengths(GriddedSet.java:87)
> >> at visad.GriddedSet.<init>(GriddedSet.java:73)
> >> at visad.Gridded1DSet.<init>(Gridded1DSet.java:130)
> >> at visad.Gridded1DSet.<init>(Gridded1DSet.java:99)
> >> at visad.Linear1DSet.<init>(Linear1DSet.java:116)
> >> at visad.Linear1DSet.<init>(Linear1DSet.java:88)
> >> at visad.Linear1DSet.<init>(Linear1DSet.java:51)
> >> at visad.data.text.TextAdapter.readit(TextAdapter.java:1053)
> >> at visad.data.text.TextAdapter.<init>(TextAdapter.java:210)
> >> at 
> >> ucar.unidata.data.point.TextPointDataSource.makeObs(TextPointDataSource.java:389)
> >> at 
> >> ucar.unidata.data.point.TextPointDataSource.makeObs(TextPointDataSource.java:333)
> >> at 
> >> ucar.unidata.data.point.TextPointDataSource.getSample(TextPointDataSource.java:1627)
> >> at 
> >> ucar.unidata.data.point.PointDataSource.doMakeDataChoices(PointDataSource.java:906)
> >> at 
> >> ucar.unidata.data.point.TextPointDataSource.doMakeDataChoices(TextPointDataSource.java:1635)
> >> at 
> >> ucar.unidata.data.DataSourceImpl.getDataChoices(DataSourceImpl.java:1743)
> >> at ucar.unidata.data.DataManager.createDataSource(DataManager.java:1492)
> >> at 
> >> ucar.unidata.idv.IntegratedDataViewer.createDataSource(IntegratedDataViewer.java:1967)
> >> at 
> >> ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1884)
> >> at 
> >> ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1818)
> >> at 
> >> ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1791)
> >> at ucar.unidata.idv.chooser.IdvChooser.makeDataSource(IdvChooser.java:907)
> >> at 
> >> ucar.unidata.idv.chooser.AtecChooser.doLoadInThread(AtecChooser.java:300)
> >> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> >> at 
> >> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> >> at 
> >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> >> at java.lang.reflect.Method.invoke(Method.java:597)
> >> at ucar.unidata.util.Misc$2.run(Misc.java:1033)
> >> at ucar.unidata.util.Misc$3.run(Misc.java:1061)
> >>
> >>
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: PAR-344847
> > Department: Support IDV
> > Priority: Normal
> > Status: Open
> 
> 


Ticket Details
===================
Ticket ID: PAR-344847
Department: Support IDV
Priority: Normal
Status: Open