| strange behaviour of ladfit - known? [message #52894] |
Thu, 08 March 2007 01:29 |
Ingo von Borstel
Messages: 54
Registered: September 2006
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Member |
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Hi there,
I just encountered a strange behaviour of ladfit - it just won't return
to the command prompt when I do the following:
###############################
; create an array and initilize it
x = dblarr(100)
for i=0,99 do x[i] = sin(2*!pi/15*i)
;get a short subarray and create another scaled version of it.
Important: without offset
xcut = x[20:30]
y = xcut * 1.6
; calculate the linear relation between xcut and y - or rather try it.
print, ladfit(xcut,y)
###############################
It works nicely as soon as I add an offset to y or if I use different
data, though I can reproduce it with any subset of x. Is there a way to
circumvent this behaviour or test prior to its occurence for it, if I
don't know my input data prior to the start of a programme? I'm using
IDL 6.1.
Or does anyone know whether this behaviour can be reproduced with a
newer version of IDL?
Best regards,
Ingo
--
Ingo von Borstel <newsgroups@planetmaker.de>
Public Key: http://www.planetmaker.de/ingo.asc
If you need an urgent reply, replace newsgroups by vgap.
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