How to store vectors generated in a while loop in a single vector?

2021 4 5
1 个回答
更新时间：2021 4 5
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I am trying to create a vector with all the data generated from while loop iterations. I would like to generate a vector with all Y vectors generated (in line) and do the same for the X vector in the second while loop. Just to be clear, the first while loop will generate Y vectors with 101 columns, then 100... all the way to 1 column. I want to create a vector with all the numbers from each vector in line, so I would have a vector with 5151 columns. Is that possible?
X = [0:0.01:1];
m = 1;
nf = 101;
while m <= nf
Y = [0:0.01:1-X(m)];
m = m+1;
end
n = 0;
i = 0.01;
while 1-n*i >= 0
X = [0:0.01:1-n*i]
n = n+1;
end

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回答（1 个）

Image Analyst
Image Analyst 2021-4-5

0 个投票

See if this does what you want:
maxIterations = 500; % Failsafe for the while loop
X = [0:0.01:1];
m = 1;
nf = 101;
Y = [];
while m <= nf && m < maxIterations
numberOfElements = nf - m + 1;
thisY = linspace(0, 1 - X(m), numberOfElements);
m = m + 1;
Y = [Y, thisY];
fprintf('thisY is %d elements long and the total vector is %d elements long (so far).\n', ...
length(thisY), length(Y));
end
n = 0;
i = 0.01;
m = 1;
X = [];
while 1-n*i >= 0 && m < maxIterations
numberOfElements = nf - m + 1;
if numberOfElements <= 0
break;
end
thisX = linspace(0, 1-n*i, numberOfElements);
X = [X, thisX];
% n = n+1;
m = m + 1;
fprintf('thisX is %d elements long and the total vector is %d elements long (so far).\n', ...
length(thisX), length(X));
end

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Antonio Alves
Antonio Alves 2021-4-5
It worked perfectly! Thanks a lot! I didn't need to use the linspace function though, just the addition of the
Y = [];
while ...
Y = [Y,thisY]
end
#was necessary

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