John,
Thank you! This data was produced by NASA GMAO at GSFC. I will contact
them to find out the reason to have this range
valid_range = 9.9999999E14f, 9.9999999E14f; // float --- which does not
seem to make sense at all
it is funny though, Ferret is a lot more liberal (maybe GrADS as well) to
put up with this.
On Thu, Oct 28, 2010 at 7:35 PM, John Caron <caron@xxxxxxxxxxxxxxxx> wrote:
> On 10/28/2010 4:17 PM, Ying at NCCS wrote:
>
> Hi John,
>
> I run into this problem using netcdf-java toolsUI to open either local
> netcdf-4 file or via opendap, here is an example link
>
>
> http://esg.nccs.nasa.gov/thredds/catalog/ying/readonly/catalog.html?dataset=ying/readonly/e562p1_fp.inst3_3d_asm_Nv.20100907_00z%2B20100909_1200z.nc4
>
> it just shows all -Infinity on the color-bar.
>
> I was first having trouble to use NASA GISS Panoply (which uses
> netcdf-java), then I tried this recent version of netcdf-java 42. ToolsUI
> (downloaded from UNIDATA) --- it can read netcdf-4 file (the above link)
> but it shows same max and min values of each variable. As a result, it just
> gives a blank plot.
>
> Then I tried toolsUI-4.2.jar and it shows the same problem.
>
>
> ftp://ftp.unidata.ucar.edu/pub/netcdf-java/v4.2/toolsUI-4.2.jar
>
>
> by the way, I can use Ferret (most recent version) to open this netCDF-4
> file and makes right plots.
>
>
>
> _______________________________________________
> netcdf-java mailing listnetcdf-java@xxxxxxxxxxxxxxxx
> For list information or to unsubscribe, visit:
> http://www.unidata.ucar.edu/mailing_lists/
>
>
> Hi Ying:
>
> that file has this attribute on the data variables:
>
> :
> this is a mistake, it says that there are no valid values. if it can be
> removed from the file, it will work. can you contact the file author to have
> it removed?
>
> looking at a random variable:
>
> float SLP(time=1, lat=721, lon=1152);
> :_CoordinateAxes = "time lat lon ";
> :long_name = "sea_level_pressure";
> :units = "Pa";
> :_FillValue = 9.9999999E14f; // float
> :missing_value = 9.9999999E14f; // float
> :fmissing_value = 9.9999999E14f; // float
> :scale_factor = 1.0f; // float
> :add_offset = 0.0f; // float
> :standard_name = "sea_level_pressure";
> :vmin = 9.9999999E14f; // float
> :vmax = 9.9999999E14f; // float
> :valid_range = 9.9999999E14f, 9.9999999E14f; // float
>
> i would say that it would be better to have:
>
> float SLP(time=1, lat=721, lon=1152);
> :long_name = "sea_level_pressure";
> :units = "Pa";
> :_FillValue = 9.9999999E14f; // float
> :fmissing_value = 9.9999999E14f; // float
> :standard_name = "sea_level_pressure";
> :vmin = 9.9999999E14f; // float
> :vmax = 9.9999999E14f; // float
>
> John
>
>
> _______________________________________________
> netcdf-java mailing list
> netcdf-java@xxxxxxxxxxxxxxxx
> For list information or to unsubscribe, visit:
> http://www.unidata.ucar.edu/mailing_lists/
>
