How do I create an array of a function output?
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FortuitousMonkey
el 25 de Feb. de 2018
Comentada: Cedrick De Block
el 10 de Nov. de 2020
How do I create an array of a function output? Each attempt I've tried it overwrites the value in the array and returns a 1x1 array with the final value calculated as it's value.
I've seen nested list functions or push functions? Which is the best for the below case and how do I implement it?
Apologies if this is a simplistic question, just struggling with this problem.
My function is:
>> m=0:1:3
>> n=0:1:4
>> for a=m
for b=n
res=ack(a,b)
end
end
function res=ack(m,n)
if m==0
res = n+1;
elseif m>0 && n==0
res = ack(m-1,1);
elseif m>0 && n>0
res = ack(m-1,ack(m,n-1));
end
end
1 comentario
David Fletcher
el 25 de Feb. de 2018
Editada: Stephen23
el 26 de Feb. de 2018
Essentially your problem is very similar to the answer I provided for
Maybe not the 'best' way to do it, but it is pretty much the answer to the problem you are outlining
Respuesta aceptada
Stephen23
el 26 de Feb. de 2018
Method one: nested loops and indexing
m = 0:3;
n = 0:4;
out = nan(numel(m),numel(n));
for km=1:numel(m)
for kn=1:numel(n)
out(km,kn) = ack(m(km),n(kn));
end
end
giving:
out =
1 2 3 4 5
2 3 4 5 6
3 5 7 9 11
5 13 29 61 125
Method two: arrayfun:
>> [M,N] = ndgrid(m,n);
>> out = arrayfun(@ack,M,N)
out =
1 2 3 4 5
2 3 4 5 6
3 5 7 9 11
5 13 29 61 125
2 comentarios
Cedrick De Block
el 10 de Nov. de 2020
hello excuse me,
in your fist example I have a problem with "ack"
matlab doesn't reconise it, is it a function?
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