Combining a matrix of numbers with a vector of strings
in [Matlab]
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From: Vinod Karanth on 8 Sep 2009 22:50 Hi All; I am trying to combine a matrix of numbers with a column vector of strings. I am looking at ways of combining these two into a single matrix. Example: % Matrix of numbers. num_mat=[1,2,10;25,2,1;10,9,21]; % Coulmn vector of string, X. for i = 1:size(num_mat,1) str_vect(i,1)='X'; end I know I can use this below-- % Required matrix. Req_mat=[num2str(num_mat),str_vect] But, the problem with the above matrix is that there is no space between the last column of num_mat and the string vector. I need to have atleast one space between them. I really appreciate if anybody knows a way to solve this.... Thanks.
From: Nathan on 8 Sep 2009 23:38 On Sep 8, 7:50 pm, "Vinod Karanth" <vinodkara...(a)gmail.com> wrote: > Hi All; > > I am trying to combine a matrix of numbers with a column vector of strings. I am looking at ways of combining these two into a single matrix. > > Example: > > % Matrix of numbers. > num_mat=[1,2,10;25,2,1;10,9,21]; > > % Coulmn vector of string, X. > for i = 1:size(num_mat,1) > str_vect(i,1)='X'; > end > > I know I can use this below-- > % Required matrix. > Req_mat=[num2str(num_mat),str_vect] > > But, the problem with the above matrix is that there is no space between the last column of num_mat and the string vector. I need to have atleast one space between them. > > I really appreciate if anybody knows a way to solve this.... > > Thanks. Req_mat=[num2str(num_mat),' ',str_vect]; There's your space. Have you read about cell arrays? Those might be of use to you as well. -Nathan
From: Vinod Karanth on 8 Sep 2009 23:52 Req_mat=[num2str(num_mat),str_vect] Req_mat=[num2str(num_mat),' ',str_vect]; Hi Nathan, Thanks for your reply. The output from Req_mat=[num2str(num_mat),str_vect] and Req_mat=[num2str(num_mat),' ',str_vect] are the same :-(....is there any other way out? Thanks.
From: Nathan on 9 Sep 2009 00:58 On Sep 8, 8:52 pm, "Vinod Karanth" <vinodkara...(a)gmail.com> wrote: > Req_mat=[num2str(num_mat),str_vect] > > Req_mat=[num2str(num_mat),' ',str_vect]; > > Hi Nathan, > > Thanks for your reply. The output from Req_mat=[num2str(num_mat),str_vect] and Req_mat=[num2str(num_mat),' ',str_vect] are the same :-(....is there any other way out? > > Thanks. Well, if you're making the whole thing a string anyways, why not use sprintf? Req_mat = sprintf(%s %s,num2str(num_mat),str_vect); -Nathan
From: Vinod Karanth on 9 Sep 2009 02:03
> Well, if you're making the whole thing a string anyways, why not use > sprintf? > Req_mat = sprintf(%s %s,num2str(num_mat),str_vect); > > -Nathan Hi Nathan, I checked with your above suggestion, but it just puts all the elements one next to another.... >> Req_mat = sprintf('%s %s',num2str(num_mat),str_vect) Req_mat = 111111111122222123456789012345678901234 Please note that my num_mat has different values from what I showed in my first example. But the end result is not what I am after....Any other inputs please? Thanks. |