| Re: Q: About reading files into an array without knowing the size. [message #5349 is a reply to message #5205] |
Mon, 06 November 1995 00:00  |
Hermann Mannstein
Messages: 22
Registered: September 1995
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Junior Member |
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David van Kuijk <kuijk@mpi.nl> wrote:
> Hi
>
> One of the nice things of IDL is that it is possible to read whole
> ASCII-files of data (e.g. floats) into an array in one swoop, without
> having to go through a while loop which reads all of these numbers one by
> one. E.g.:
>
> OPENR,1, "filename"
> floatss=FLTARR(10000)
> READF, 1, floatss
>
> What is not so nice is that IDL has to know exactly how many datapoints
> there are in the file, otherwise not all the data are read, or you get
> sth like an "End of file encountered"-error. So the size of _floatss_ in
> the example above should be equal to the number of floats in the
with
OPENR,1, "filename"
a=fstat(1)
floatss=fltarr(a.size/4)
READF, 1, floatss
you will get what you want, but you have to know, what type of data "filename"
contains.
--
Regards,
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Hermann Mannstein Tel.: +49 8153 28-2503
Institut fuer Physik der Atmosphaere or -2558
DLR - Oberpfaffenhofen Fax.: +49 8153 28-1841
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