Creating two arrays using Arrayfun

2023 1 28
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更新时间：2023 1 28
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How can I create two array sets with Arrayfun, I am getting an error with this code structure. thanks
%%Simulink Matlab function Block
function [y,x]=fcn(Az,sm,del,w0,gama,wc,D_ws,e,n_xs,n_ys,n_zs,om,s)
a= 1:1:100;
vc=1:1:100;
y=arrayfun(@fcn,mod(a,10)+1,fix((a-1)./10)+1);
x=arrayfun(@fcn,fix((vc-1)./10)+1);
function [b,c]=fcn(ns,nb,nc)
k_x=0.01;
k_y=0.01;
b=-w0*cos(gama(nb))+ (wc-k_x*w0)*cos(gama(nb)) * (e*cosd(Az(nb))+sm(ns)*cosd(Az(nb)+del(nb))) + ((D_ws+k_y*w0)*cos(gama(nb))) * (e*sind(Az(nb))+sm(ns)*sind(Az(nb)+del(nb)));
c=-n_xs*sin(gama(nc))*cosd(Az(nc)+del(nc)) + n_ys*sin(gama(nc)) * sind(Az(nc)+del(nc)) + n_zs*cos(gama(nc)) + (e/om) * (cos(gama(nc)) * (s(2) * cosd(Az(nc)) + s(1)*sind(Az(nc))) - sin(gama(nc))*sin(del(nc))*(s(3)-om));
end
end

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dpb
dpb 2023-1-28
Code formatted by dpb...
What are you trying to do here????
You've got nested functions recursive and duplicated function names and even ignoring that, none of the references to them match a function prototype of the same name.
Explain the end object here...
Alexi
Alexi 2023-1-28
编辑：dpb 2023-1-28
With the code I wrote above, I tried to create a 100-valued y-array and a 10-valued x-array. I'm trying to create a more efficient code structure compared to a for loop. I am developing a model on simulink. I use matlab fucntion blocks while developing the model. Repetitive processes such as creating arrays, transferring arrays between blocks are often dominated in the content of Math function blocks. I use a for loop when creating arrays and storing data in matrix content, but I noticed that the for loop blocks simulink blocks and slows down the simulation a lot.
more understandable code structure that does the same function as above.
Example code: what ı want to do ------ obtained f array (1,100)
m=10;
n=10;
k=1;
f=zeros(1,m*n);
for i=1:1:m*n
f(i)=x(k)+y(i)...;
if k==n
k=0;
end
k=1+k;
end
Stephen23
Stephen23 2023-1-28
"but I noticed that the for loop blocks simulink blocks and slows down the simulation a lot. "
A well-written loop will be faster than ARRAYFUN.
dpb
dpb 2023-1-28
编辑：dpb 2023-1-28
for loops will be far more efficient than arrayfun; while it's one line of source code, it has to parse the inputs and then build the for...end loop internally to execute. Don't confuse lines of code with efficiency; they're not necessarily at all in conformance with fewer source lines-->faster execution time.
USE THE CODE FORMATTING BUTTON FOR POSTING CODE!!!!
The above uses undefined variables x,y; what are they?
More than likely the arrays can be constructed more efficiently with colon operator and matrix operations unless they're recursive although even then it's probably possible to make use of patterns if have the definition of what it is that is the end result desired.
dpb
dpb 2023-1-28
编辑：dpb 2023-1-28
Assuming x, y are commensurately-sized arrays, the above would appear to be equivalent to
f=repmat(x(:),m,1)+y(:);
which would be "the MATLAB way"...
Alexi
Alexi 2023-1-28
Thanks for your replies, I'll review it again.

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Alexi
Alexi
2023-1-28

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dpb
dpb
2023-1-28

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