store repetitive data results

2013 6 1
3 个回答
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0 个投票

I can't really explain what i want to do, but i will try my best. I have an repetitive form(for) that for every input value it returns an answer after doing a set of operations. What i want is to store every answer into an string that at the ending of all calculations contains all the answers. Sorry but i'm kind new to MATLAB so please be gentle with me. Thanks.

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Pavel
Pavel 2013-6-2
if true
for thet=0:5:180;
a=1;
b=0;
c=-5*r^2+2*r^2*sind(thet)*sind(thet)+2*r^2*((4-5*sind(thet)*sind(thet)+sind(thet)*sind(thet)*sind(thet)*sind(thet))^(1/2));
d=[a b c];
e=roots(d);
out=e(e>0)
end
i want every out answer stored into an string.

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Andrei Bobrov
Andrei Bobrov 2013-6-2
编辑：Andrei Bobrov 2013-6-2

0 个投票

r = 100;
th = 0:5:180;
c = -5*r^2+2*r^2*sind(thet).^2+2*r^2*((4-5*sind(th).^2+sind(th).^4).^(1/2));
x = cell(numel(th),1);
for jj = 1:numel(th)
rt = roots([1 0 c(jj)]);
x{jj} = rt(rt>0);
end

更多回答（2 个）

Image Analyst
Image Analyst 2013-6-1

0 个投票

Like this?
cellArrayOfStrings = cell(numberOfRuns, 1);
for k = 1 : numberOfRuns
cellArrayOfStrings{k} = SomeFunctionThatReturnsAString(k)
end
SomeFunctionThatReturnsAString() would be some function you write that returns some output argument as a string.
Pavel
Pavel 2013-6-2
编辑：Pavel 2013-6-2

0 个投票

clc
r=100;
x=cell(90,1);
for k=1:90;
for thet=0:5:180; %unghiul elementului conduc?tor
a=1;
b=0;
c=-5*r^2+2*r^2*sind(thet).^2+2*r^2*((4-5*sind(thet).^2+sind(thet).^4)^(1/2));
d=[a b c];
v=0:5:180;
e=roots(d);
out=e(e>0);
end
x{k}=out(k)
end
i get the following error when i execute the code: "Attempted to access out(2); index out of bounds because numel(out)=1."

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