how can I combine two columns of an array A(m*2) in one column in the format: column1(column2)?

Question

Joseph 2015-10-20

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/249829-how-can-i-combine-two-columns-of-an-array-a-m-2-in-one-column-in-the-format-column1-column2

评论： Joseph 2015-10-20

i have a cell array A(m*2). the first column of consist of R and P characters and second column is just numbers. now i want put 2 columns together in the format P(number) or R(number) in which the numbers inside parenthesis are the elements of second column. can any one help with this?

thank you;

2 个评论
显示无隐藏无

Image Analyst 2015-10-20

I don't understand. You can't have characters and numbers in the same column vector. Please give an example.

Joseph 2015-10-20

编辑：Joseph 2015-10-20

example: linlist=horzcat(Branch,num2cell(JJ));

JJ is a matrix that includes numbers and Branch is a cell that includes characters(in this case, R and P). i put them together using horzscat and made linlist cell.

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Mohammad Abouali 2015-10-20

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/249829-how-can-i-combine-two-columns-of-an-array-a-m-2-in-one-column-in-the-format-column1-column2#answer_196771

在 MATLAB Online 中打开

So, if I understood you right you have A of size Mx2 where the first column has either the character R or P and the second column has a number. You want to have two other variables One named R and another Named P which they contain the corresponding numbers from the second column of A?

If that's what you want here is a sample code:

A={'R',1; ...
   'P',5; ...
   'R',3; ...
   'R',10; ...
   'P',6; ...
   'R',8};
R=cell2mat(A(strcmpi(A(:,1),'R'),2))
R =
     1
     3
    10
     8
P=cell2mat(A(strcmpi(A(:,1),'P'),2))
P =
     5
     6

2 个评论
显示无隐藏无

Joseph 2015-10-20

编辑：Joseph 2015-10-20

i just want to make a string with the format P(number) or R(number)., in which the numbers belong to second column. i know that i can use strcat but i don't know how to put the numbers in second column in the parenthesis.

Joseph 2015-10-20