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waynie
USA
9 Posts |
 Posted - 02/27/2014 : 1:43:04 PM
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Hello,
I'm using Origin 8 and trying to fit the equation y = (1-exp(-(ax)^(b)) to a curve. Under fitting function organizer, I click add new function and put in the 2 parameters a, b. When I hit simulate, nothing shows up on the graph. Not sure where I'm making a mistake.
Also, on a side note...
I want to calculate the average values of a new numbers in a column so I typed in the following formula under Set column values, however it does not give me any values in the column, not sure what the error is in my formula...Col(A)/(average(Col(A)[6],Col(A)1[12]))
Thanks, |
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lkb0221
China
497 Posts |
Posted - 02/27/2014 : 5:27:10 PM
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Hi, Waynie
For the fitting function, you need to add * for multiplication. Like the following:
1-exp(-(a*x)^b)
Zheng
OriginLab |
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lkb0221
China
497 Posts |
Posted - 02/27/2014 : 5:32:35 PM
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For the SCV problem, please see my example below:
Zheng
OriginLab |
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Non linear curve fitting