How to construct indicator function in array function?
99 views (last 30 days)
Show older comments
In my original problem, I want to construct piecewise linear equation to analyze its wavefront.
However, the number of points are about 200~400. Thus, using "pw" to construct function is not efficient to my problem and it works case by case.
Hence, I try to construct a indicator function as follows. For example,
f= [2;3;4];
g= [2.5;4;8];
h= arrayfun(fg(x,f,g),f,g)
function out=fg(x,f,g)
fval=f;
gval=g;
if x>=fval & x<=gval
out=1;
else
out=0;
end
end
Its result show "Unrecognized function or variable 'x'."
I also refer to the related question Passing array arguments to an anonymous function, but I still cannot work out.
I WANT: it can show like this
h(2.1)= [1; 0; 0] , h(4)=[0; 1; 0]
0 Comments
Accepted Answer
Stephen23
on 31 Mar 2021
I don't see why you need arrayfun:
f = [2;3;4];
g = [2.5;4;8];
fun = @(x) x>=f & x<=g;
fun(2.1)
fun(4) % your example is incorrect: 4 is definitely equal to 4 and less than 8
More Answers (0)
See Also
Categories
Find more on Least Squares in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!