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Re: delete a tagname from a structure? [message #9705 is a reply to message #9702]

Fri, 08 August 1997 00:00

J.D. Smith
Messages: 214
Registered: August 1996

Senior Member

R. Bauer wrote:
>
> Hi,
>
> I like to remove a tagname from a structure.
>
> Any ideas?
>
> --
> R.Bauer
>
> Institut fuer Stratosphaerische Chemie (ICG-1)
> Forschungszentrum Juelich
> email: R.Bauer@fz-juelich.de

st={tag1:1,tag2:2,tag3:3,tag4:4} ; a structure
tags=tag_names(st)
list=[0,1,3] ;; list of which elements to keep
st=create_struct(tags[list],st.(list[0]),st.(list[1]),st.(li st[2]))

If you have a named struct, you can use
name=tag_names(st,/STUCTURE_NAME) and create_struct(name=name,...)

For a totally general method which doesn't preassume the number of tags
to keep, you'd have to build an 'execute' statement.

E.g.

n=strtrim(n_elements(list),2)
exc='st=create_struct(tags[list],'+string(FORMAT='('+n+'("st.(list[ ",I0,"])",:,","))',indgen(n_elements(list)))+')'
out=execute(exc)

JD

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		Re: delete a tagname from a structure? By: davidf on Sat, 09 August 1997 00:00
		Re: delete a tagname from a structure? By: J.D. Smith on Fri, 08 August 1997 00:00

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