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Re: smooth function and rounding error [message #69199 is a reply to message #69197]

Fri, 18 December 2009 05:05

lbusett@yahoo.it
Messages: 30
Registered: February 2006

Member

Hi Simona,

in the Help of the smooth function it is said that "If a Width
value is even, then Width+1 will be used instead."
so I think that if you are using an even number as width you should
modify both the line:

y[i]=total(A[i-width/2:i+width/2-1])/width

with

y[i]=total(A[i-width+1/2:i+width+1/2-1])/float(width+1)

, and the line:

for i=(width)/2,n-(width)/2-1,1 do begin

with

for i=(width+1)/2,n-(width+1)/2-1,1 do begin

Otherwise, you can leave the program as in the original post and just
add the command "width = width + 1" before the for loop.

Hope this helps,

Lorenzo

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[Message index]

		Re: smooth function and rounding error By: jeanh on Fri, 18 December 2009 09:18
		Re: smooth function and rounding error By: simona bellavista on Fri, 18 December 2009 07:02
		Re: smooth function and rounding error By: lbusett@yahoo.it on Fri, 18 December 2009 05:05
		Re: smooth function and rounding error By: simona bellavista on Fri, 18 December 2009 03:19
		Re: smooth function and rounding error By: jeanh on Thu, 17 December 2009 16:13

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