Cellfun or for loop
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
Atreyu91
am 26 Aug. 2015
Beantwortet: Guillaume
am 26 Aug. 2015
I have the following code where I am trying to obtain U for every k value and the values in a cell array:
G = 1x3 cell
If
G{1,1} = [-6.45230249676815e-06;
2.43528862745912e-20;
2.00553181084869e-19;
6.45309629402509e-06;
-9.16814514353228e-20;
6.45627245974903e-06]
G{1,2} = [-3.22654814674929e-06;
-5.38986674121538e-20;
-2.25622328702039e-20;
3.22734209049890e-06;
-2.25622301386590e-20;
3.23051981960359e-06]
G{1,3} = [-2.15129672917826e-06;
-2.05328256780239e-20;
-6.68510603470547e-21;
2.15209081944770e-06;
-6.68510421367576e-21;
2.15527011276720e-06]
and
k = 0.0012
k = 0.0025
k = 0.0037
L1 = 0.1
L2= 0.2
L3 = 0.4
U1 = G(1)*exp(-k*L1)+G(2)*exp(-k*L1);
U2 = G(3)*exp(-k*L1)+G(4)*exp(-k*L1);
U3 = G(5)*exp(-k*L1)+G(6)*exp(-k*L1);
I need to obtain U1,U2,U3 for each value of k
I have tried using for loops and cellfun() etc.
U1 = cellfun(@(G, k) G(1)*exp(-k*L1)+G(2)*exp(-k*L1), G, k, 'UniformOutput', 0);
but it keeps saying "Error using cellfun Input #3 expected to be a cell array, was double instead."
Can anyone please show me how to perform this in MATLAB?
0 Kommentare
Akzeptierte Antwort
Walter Roberson
am 26 Aug. 2015
Your description is unclear. One interpretation is that you want
nG = length(G);
kvals = [0.0012 0.0025 0.0037];
nk = length(kvals);
L = [0.1 0.2 0.4];
U = zeros(nk, nG);
for Gidx = 1 : nG
g = G{Gidx};
for kidx = 1 : nk
k = kvals(kidx);
U(kidx, Gidx) = g(2*kidx-1)*exp(-k*L(kidx)+g(2*kidx)*exp(-k*L(kidx));
end
end
but another possibility is that you want all combinations of L used with all combinations of k rather than corresponding L used with each k.
Weitere Antworten (1)
Guillaume
am 26 Aug. 2015
k = 0.0012
k = 0.0025
k = 0.0037
One would assume that's not what you've entered in matlab (since that would result in just k = 0.0037) but something else. For your cellfun to work, you'd have to have written k as a cell array:
k = {0.0012; 0.0025; 0.0037};
The error is clear your third input (k) is not a cell array.
0 Kommentare
Siehe auch
Kategorien
Mehr zu Logical 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!