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Re: Implied do loops in IDL [message #2249 is a reply to message #2245]

Tue, 14 June 1994 07:33

landers
Messages: 45
Registered: May 1993

Member

In article <tonym.1121921004A@llyene.jpl.nasa.gov>, tonym@lurleen.jpl.nasa.gov (Tony Mannucci) writes:
|> In FORTRAN, the file was written as:
|>
|> write(unit) n, (data(i), i = 1, n)
|>
|> and read as:
|>
|> read(unit) n, (data(i), i=1, n)

you could do something like this:

openr, unit,/Get_Lun, filename, /f77_Unformatted
; ....
while( reading_these_lines) do begin

file = fstat( unit ) ; remember where record begins
n = 0L ; make sure you read the right data type
readu, unit, n ; read the data count
data = fltarr( n ) ; make data array
point_lun, unit, file.cur_ptr ; rewind to the beginning of the record
readu, unit, n, data ; re-read the record, with data

; ... process data ...

end

;Dave

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[Message index]

		Re: Implied do loops in IDL By: thompson on Thu, 16 June 1994 06:56
		Re: Implied do loops in IDL By: leic on Wed, 15 June 1994 10:15
		Re: Implied do loops in IDL By: landers on Tue, 14 June 1994 07:33
		Re: Implied do loops in IDL By: knipp on Tue, 14 June 1994 00:53
		Re: Implied do loops in IDL By: sjt on Tue, 14 June 1994 02:25

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