Hi John, all,
I also reported the same issue few weeks ago, but without any answer:
http://www.unidata.ucar.edu/mailing_lists/archives/thredds/2010/msg00346.html ;
urls provided in that link don't work yet, and updated datasets can be found
here:
http://mandeo.meteogalicia.es/thredds/catalogos/SWAN/swan_catalog.html
but the problem is still the same.
We also developed a tool that allows users request data through NCSS (as point
dataset) by clicking on a map and there you can see a bit of the problem:
http://sor.meteogalicia.es:8080/mg-web-raia/visor/raia/html/visorRAIA.html?request_locale=en
In the SWAN layers, which have two-dimensional lat/lon, sometimes you don't get
any data because of the server error you mentioned and when you get data the
lat/lon in the NCSS response showed in the popup doesn't match with the lat/lon
on the map.
And regarding netCDFSubset I'm also wondering if there is some underway solution
to the problem with multiple variables with different vertical coordinates in
requests as point dataset.
Cheers!
On April 15, 2011 at 2:37 AM John Maurer <jmaurer@xxxxxxxxxx> wrote:
> Aloha TDS Folks,
> I've run into a problem trying to download data for several of our curvilinear
> grids as point data using the NetCDF Subset Service (NCSS). Not only are the
> latitude and longitude returned different from the latitude and longitude I
> request (even though I'm supposedly using grid center points reported via
> ncWMS), it sometimes produces the following error for latitudes and longitudes
> that I know are within bounds and contain valid data (see error below from
> threddsServlet.log). It would seem that there is a bug in how TDS is trying to
> convert the specified latitude and longitude to grid coordinates?, which may
> perhaps be related to these grids being curvlinear (two-dimensional lat/lon
> variables)? I was hoping to deploy this soon as a method for users to download
> recent data (from our TDS) at a clicked location within our Google Maps
> interface. Any help would be greatly appreciated!
> Mahalo,
> John Maurer
> Pacific Islands Ocean Observing System (PacIOOS)
>
> The full URL for the example request failure would be:
>
> http://oos.soest.hawaii.edu/thredds/ncss/grid/hioos/roms_forec/hiog/HI-ROMS_Forecast_Model_Run_Collection_best.ncd?accept=csv&var=temp&time_end=2011-04-15T00:00:00Z&time_duration=PT24H&vertCoord=-0.016666666666666666&point=true&latitude=21.177492141723633&longitude=-158.25900268554688
>
> An example request that succeeds for a nearby location would be:
>
> http://oos.soest.hawaii.edu/thredds/ncss/grid/hioos/roms_forec/hiog/HI-ROMS_Forecast_Model_Run_Collection_best.ncd?accept=csv&var=temp&time_end=2011-04-15T00:00:00Z&time_duration=PT24H&vertCoord=-0.016666666666666666&point=true&latitude=21.087862014770508&longitude=-157.67779541015625
>
> threddsServlet.log:
>
> 2011-04-14T14:24:57.907 -1000 [ 25941269][ 5155] INFO -
> thredds.server.ncSubset.GridServlet - doGet(): Remote host: 128.171.151.240 -
> Request: "GET
> /thredds/ncss/grid/hioos/roms_forec/hiog/HI-ROMS_Forecast_Model_Run_Collection_best.ncd?accept=csv&var=temp&time_end=2011-04-15T00:00:00Z&time_duration=PT24H&vertCoord=-0.016666666666666666&point=true&latitude=21.177492141723633&longitude=-158.25900268554688
> HTTP/1.1"
> 2011-04-14T14:24:57.928 -1000 [ 25941290][ 5155] ERROR -
> thredds.server.ncSubset.GridServlet - GridServlet.processGridAsPoint
> java.lang.ArrayIndexOutOfBoundsException
> at ucar.ma2.Index2D.setDirect(Index2D.java:137)
> at ucar.ma2.ArrayDouble$D2.get(ArrayDouble.java:295)
> at
> ucar.nc2.dataset.CoordinateAxis2D.getCoordValue(CoordinateAxis2D.java:76)
> at ucar.nc2.dt.grid.GridCoordSys.getLatLon(GridCoordSys.java:1065)
> at
> ucar.nc2.dt.grid.GridAsPointDataset.readData(GridAsPointDataset.java:130)
> at
> thredds.server.ncSubset.GridPointWriter.write(GridPointWriter.java:233)
> at
> thredds.server.ncSubset.GridServlet.processGridAsPoint(GridServlet.java:298)
> at thredds.server.ncSubset.GridServlet.doGet(GridServlet.java:210)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> at
> thredds.servlet.filter.RequestQueryFilter.doFilter(RequestQueryFilter.java:121)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> at
> thredds.servlet.filter.RequestPathFilter.doFilter(RequestPathFilter.java:105)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
> at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
> at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:568)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
> at
> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
> at java.lang.Thread.run(Thread.java:619)
> 2011-04-14T14:24:57.929 -1000 [ 25941291][ 5155] INFO -
> thredds.server.ncSubset.GridServlet - Request Completed - 500 - 0 - 22
>
