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Multiple parameters for ZEROFCN [message #78899]

Mon, 02 January 2012 14:41

Rick Walton
Messages: 3
Registered: November 2011

Junior Member

I would like to find the root of a function f(x) that depends on the
values from an array. Using th IMSL function ZEROFCN appears to only
allow a single parameter to be defined, which is x. But I would like
to vary one of the constants in the function but when I try to use a
userdefined expression for this it causes an error. To demonstrate
what I`m trying to acheive see the function and code below. If anyone
has a simple solution to this I would really appreciate the help.
Thanks in advance.

FUNCTION f, x, y
RETURN, ((sinh((1.4 +x-0.25)/(0.4))/(sinh((x-0.25)/0.4)))-y
END

;array containing data for constant y
Y=fltarr(252)

;new file to input zeros
zero=fltarr(252)

;function to determine zeros in f(x)
FOR i=0, 251 DO BEGIN
zero(i)=ZEROFCN("f", y(i))

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[Message index]

		Multiple parameters for ZEROFCN By: Rick Walton on Mon, 02 January 2012 14:41
		Re: Multiple parameters for ZEROFCN By: wlandsman on Sun, 15 January 2012 07:57

Previous Topic:	Re: Creating procedure with arbitrary number of input parameters
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