Re: Convert Integer to Text

[Martin Schultz <martin.schultz(at)dkrz.de>]

Dan Blair <vze2p88d@verizon.net> writes:

> Mark Hadfield wrote:
> 
> > From: ""Mark Hadfield"" <m.hadfield@niwa.cri.nz>
> >
> > > You can add the prefix and suffix via the "+" operator like this...
> > >
> > >     name = 'MC'+string(index,format='(I3.3)')+'.dcm'
> > >
> > > or within the format specifier like this...
> > >
> > >     name = string(index,format='("MC",I3.3,".dcm"')'
> >
> > Of course you can also use printf-style format codes (new to IDL 5.4) like
> > this
> >
> >     name = string(index,format='(%"MC%3.3d.dcm")')
> >
> > I suppose there must be somebody out there who actually *uses* this stuff?
> >
> > ---
> > Mark Hadfield
 
> A freind of mine wrote  a nice thing for just this application.  It's a
> function called
> padnumstring.pro
> 
> here it is
> [...]
> repeat begin
>  if strlen(numstring) lt length then numstring='0'+numstring
>  endrep until strlen(numstring) eq length

Not to blame you or your friend, but Mark's solution using the format qualifier is far superior and faster, too. You shouldn't use a loop in IDL when you can avoid it as easily as here.

Martin


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[[ Dr. Martin Schultz   Max-Planck-Institut fuer Meteorologie    [[
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