How do I create an array of a function output?
79 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
FortuitousMonkey
am 25 Feb. 2018
Kommentiert: Cedrick De Block
am 10 Nov. 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 Kommentar
David Fletcher
am 25 Feb. 2018
Bearbeitet: Stephen23
am 26 Feb. 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
Akzeptierte Antwort
Stephen23
am 26 Feb. 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 Kommentare
Cedrick De Block
am 10 Nov. 2020
hello excuse me,
in your fist example I have a problem with "ack"
matlab doesn't reconise it, is it a function?
Weitere Antworten (1)
Siehe auch
Kategorien
Mehr zu Matrix Indexing finden Sie in Help Center und File Exchange
Produkte
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!