Merging vectors into one
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Hi, I am new to Matlab and I'm trying to use it as a tool to create a model.
I have two vectors, both of them are <1x6001> double,
x=(x1,x2,x3...)
y=(y1,y2,y3...)
but what I need is to merge them as one in the following way:
z=(x1,y1;x2,y2;x3,y3...,xn;yn) - comma separates the elements, and semicolon separates the pairs.
so that I can use it as input data.
Is there a way to do it?
采纳的回答
Simple:
x = 1:10;
y = x + 10; % for example
% x and y are both [1x10] row vectors as you mentioned
z = [x(:), y(:)];
% z is a [10x2] matrix of
% [x1, y1;
% x2, y2;
% .....
% xn, yn]
And if you want it back in 'row' form, just transpose z using an apostrophe '
7 个评论
Daniel M
2019-10-29
I definitely get a 10x2 doing the way I wrote it. I get a 1x20 using z = [x,y]. Clearly, your x and y are [10x1].
Stephan
2019-10-29
Forget it - my fault, comment deleted ;-)
Lucas Stadnik
2019-10-29
Daniel M
2019-10-29
You don't need to.
xcol = x(:);
% this lists all the elements of x in one big column
% same thing as doing [x1;x2;...;xn]
ycol = y(:); % same thing
z = [x(:), y(:)];
% this concatenates x and y side by side
% same thing as [x1, y1 ; x2, y2; ...; xn, yn]
Lucas Stadnik
2019-10-29
Daniel M
2019-10-29
You can use writematrix to save it as a txt (among other similar things). save only save mat files.
Lucas Stadnik
2019-10-29
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