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[Q] Reading from file, speed [message #18914]

Thu, 10 February 2000 00:00

Koen Janssens
Messages: 3
Registered: February 2000

Junior Member

I am looking for a better way to import data into IDL, the one I am
using now seems very slow (about 20 secs for reading in 2 MBytes). Here
is the script that I use:

openr, ms_dat_unit, ms_dat_file
ms = bytarr(dimx,dimy,dimz)
for z = 0,(dimz-1) do begin
for y = 0,(dimy-1) do begin
for x = 0,(dimx-1) do begin
readu, ms_dat_unit, tmp
ms[x,y,z] = tmp
endfor
endfor
endfor
close, ms_dat_unit
free_lun, ms_dat_unit

The file I am reading contains integers in binary format (volume data
128^3).

Any help is appreciated.
Koen

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