Thiago Biscaro wrote:
> Hi everybody
>
> I'm trying to write a Vdata to an HDF file, but for some reason, the
> only field description IDL accepts is 'PX', like the example in the
> IDL user's guide.
>
> The command
>
> HDF_VD_WRITE, Vdat, 'PX', intarr(5)
>
> works fine, but
>
> HDF_VD_WRITE, Vdat, 'RR', intarr(5)
>
> returns
>
> HDF_VD_WRITE: Unable to set the VDATA fieldnames to <STRING ('RR')>.
>
> I need to set the field name to something that I can understand later,
> so PX is not an option... Any ideas on how to sole this? I know I can
> write as an SDS, but I need to do as Vdata for compatibility with some
> files we process here.
The following code works fine for me. Could you provide a more precise
explanation of what you're trying to do?
filename = 'test.hdf'
fieldname = 'RR'
file = HDF_Open(filename,/CREATE)
Vdat = HDF_VD_Attach(file, -1)
HDF_VD_FDefine, Vdat, fieldname
; /INT, ORDER=5
HDF_VD_WRITE, Vdat, fieldname, intarr(5)
HDF_VD_Detach, Vdat
HDF_Close, file
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