Hi Sachin:
Im not sure why you are casting to GridCoordSys. The following is the correct
way to use this:
GridCoordSystem gcsi = grid.getCoordinateSystem();
boolean vAxis = (gcsi.getVerticalAxis() != null);
is there some functionality you need from GridCoordSys that you cant get from
GridCoordSystem
interface ?
Sachin Kumar Bhate wrote:
> John,
>
> I had earlier reported the problem described below with nj2.2.22.
> The same problem still exist in netcdf-java 4.0 as well.
>
> My current testing netcdf-java version is
>
> Version 4.0.34.20090220.0016
> Build Date = 2009-02-20 00:16:36
>
>
> -sachin
>
> John Caron wrote:
>> hi sachin:
>>
>> thanks for reporting, ill look into this.
>> which version of the library are you using?
>>
>> Sachin Kumar Bhate wrote:
>>> Hello,
>>>
>>> I am trying to query a subsetted GeoGrid for 'vertical axis', and
>>> it returns false when I know that the data has vertical axis.
>>> The original grid does return 'true' for the presence of vertical axis,
>>> so it looks like the flag (hAxis/pAxis/zAxis) is not getting set after
>>> subsetting the GeoGrid.
>>>
>>> Just wanted to report this as this method has been a loyal gatekeeper
>>> for me when I am trying to get vertical coordinate data when there is
>>> none.
>>>
>>> >>>
>>> example code:
>>>
>>> String uri='http://www.gri.msstate.edu/rsearch_data/nopp/bora_feb.nc';
>>> String var='temp';
>>>
>>> GridDataset gid = GridDataset.open(uri);
>>> GeoGrid Grid = gid.findGridByName(var);
>>> GridCoordSys gcs = (GridCoordSys) Grid.getCoordinateSystem();
>>>
>>> boolean vAxis = gcs.hasVerticalAxis(); // returns true.
>>>
>>> // subset geogrid
>>> GeoGrid subg = Grid.subset(null,null,null,1,1,1); GridCoordSys
>>> gcs2 = (GridCoordSys) subg.getCoordinateSystem();
>>>
>>> boolean vAxis2 = gcs2.hasVerticalAxis(); // returns false, should
>>> return true.
>>>
>>> <<<
>>>
>>> thanks..
>>>
>>> Sachin.
>>>
>>
>
