Appending a row vector into a matrix based on given conditions

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Michael Wu
Michael Wu 2020-2-20
评论： Michael Wu 2020-2-20
In my current code I have created a 604x1 matrix called b where I subtracted -60 and -550, the smaller of the values would then call a row in a larger matrix, 604x3, called data and append the row into one of the two empty matrices I have set up plane550 and plane60 depending on whichever value was greater than the other. Could someone guide me as to how to fix the problem in my code given below as running it gives me a single matrix that is equal to data in size.
xzplane60 = [];
xzplane550 = [];
for ii = 1:size(equakemat,1)
if abs(b(ii)-60) > abs(b(ii)-550)
xzplane550 = [xzplane550; equakemat(ii,:)];
else
xzplane60 = [xzplane60; equakemat(ii,:)];
end
end

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James Tursa
James Tursa 2020-2-20
编辑：James Tursa 2020-2-20
x = abs(b-60) > abs(b-550); % fixed typo
xzplane550 = equakemat(x,:);
xzplane60 = equakemat(~x,:);
If all the data ends up in only one matrix, then all the data is closer to one of the comparison values.
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James Tursa
James Tursa 2020-2-20
Examine your b vector closely. What exactly is in it? Pause the code in the debugger and take a look at it to make sure it is what you think it is.
Michael Wu
Michael Wu 2020-2-20
ohhhh i see i used the wrong vector i had another one labelled c that gave the correct output sorry for the inconvienience.

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