comp.lang.idl-pvwave archive: archive » Re: A problem using IDL?

Home » Public Forums » archive » Re: A problem using IDL?

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: A problem using IDL? [message #60079]

Fri, 02 May 2008 09:20

R.G. Stockwell
Messages: 363
Registered: July 1999

Senior Member

a bit better code. The top plot is the aliased signal.
The bottom shows the well sampled (not aliased) signal, which
is sampled much more finely. The thick squares show the aliased
signal from the top plot.

window,xsize=800,ysize=400
min=0
max=100
n=205
x=fltarr(n+1)
for i=0,n do x[i]=min+double(i)*(max-min)/n
;print,x
y=sin(2*3.141593*x)

!P.multi=[0,1,2]

plot,x,y,psym=-4,xr=[0,10]
x1 = x
y1 = y

n=205*8
x=fltarr(n+1)
for i=0,n do x[i]=min+double(i)*(max-min)/n
;print,x
y=sin(2*3.141593*x)

plot,x,y,psym=-4,xr=[0,10]
oplot,x1,y1,psym=6,thick=4

end

Report message to a moderator

[Message index]

		Re: A problem using IDL? By: R.G. Stockwell on Fri, 02 May 2008 09:20
		Re: A problem using IDL? By: R.G. Stockwell on Fri, 02 May 2008 09:16
		Re: A problem using IDL? By: Vince Hradil on Thu, 01 May 2008 08:41
		Re: A problem using IDL? By: pgrigis on Thu, 01 May 2008 07:49

Previous Topic:	Re: ProductLog function
Next Topic:	idl array question

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Thu Oct 09 07:23:24 PDT 2025

Total time taken to generate the page: 0.16274 seconds