calculate the function in vector.
显示 更早的评论
I want to calculate my 'poly' function for domain of linspace(0,1,100) so I tried ---------------------------------
%make poly function
function [output] = poly(input)
output= ([input^0 input^1 input^2 input^3 input^4 input^5]*transpose([1.0000 1.0001 0.4991 0.1703 0.0349 0.0139]) )
end
----------------------------------
x = linsapce(0,1,100)
poly(x)
----------------------------------
but it doesn't work. I found that for sin(x) it does. I want to know what's different between to func. and how to solve the problem.
1 个评论
KSSV
2017-6-12
What is the input you used? You have to take care of element by element operations.
采纳的回答
Andrei Bobrov
2017-6-13
编辑：Andrei Bobrov
2017-6-13
function [output] = AsPolyvalForJaeSung(input)
output = bsxfun(@power,input(:),0:5)*[1.0000;1.0001;0.4991;0.1703;0.0349;0.0139];
end
更多回答（2 个）
KSSV
2017-6-12
For
input = linspace(0,1,100) ;
In the line
output= ([input.^0 input.^1 input.^2 input.^3 input.^4 input.^5]*transpose([1.0000 1.0001 0.4991 0.1703 0.0349 0.0139]) )
The size of term in square braces would be 1X600 where as the term transpose i.e second term got only 6X1 terms. How you expect them to multiply? You need to rethink on your code.
Torsten
2017-6-12
0 个投票
output= ([(input.').^0 (input.').^1 (input.').^2 (input.').^3 (input.').^4 (input.').^5]*([1.0000 1.0001 0.4991 0.1703 0.0349 0.0139]).'
Best wishes
Torsten.
2 个评论
JaeSung Choi
2017-6-12
Torsten
2017-6-13
??
According to your question, I think this is exactly what you needed.
Best wishes
Torsten.
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