Combine different Matrix together

I am trying to write a convertor, for converting a text file to another text file. I read three different matrix, and I want to combine them.

In the following, I put a small set of data.

The first matrix is this:

0 1
3 0
1 4

This is the second matrix:

-0
-1
-0

As you see, matrix one and two have the same number of rows. This is the third matrix:

0 1
0 2
2 1
3 0
3 2
2 0
1 4
1 6

I want to produce the following:

-0: 0 1
1: 0 2
2: 2 1
-1: 3 0
4: 3 2
5: 2 0
-0: 1 4
7: 1 6

I was wondering if you kindly help me.

Thanks

[Ali]

Please write me if you have any ideas

[Azzi Abdelmalek]

what is this?

-0: 0 1

[Ali]

Many thanks. I want to print data in this way.

Answer 1

[Walter Roberson]

firstcol = cellstr( num2str( (0:size(Third,1)-1).', '%d:') );
[tf, idx] = ismember(Third, First, 'rows');
firstcol(tf) = Second(idx(tf));
Output = [firstcol, num2cell(Third)];

[Ali]

Thanks a lot for your help.

I got the following message by running your code.

Conversion to cell from double is not possible.

Error in ff (line 17)

firstcol(tf) = Second(idx(tf));

[Walter Roberson]

Your Second should be a cell array of strings, not numeric values. It is tricky to determine whether a 0 is +0 or -0, and -0 easily lose their identity. -0 does exist in MATLAB as something different than 0 but with the amount of programming you have to put in to take care of it, it is easier to use cell array of strings.

[Ali]

Many thanks.

I changed the second matrix to the following, but I got the same error.

Could you help me to solve it.

-2

-1

-2

[Walter Roberson]

firstcol = (0:size(Third,1)-1).';
[tf, idx] = ismember(Third, First, 'rows');
firstcol(tf) = Second(idx(tf));
fprintf( '%3d: %3d %3d\n', [firstcol, Third].');

[Ali]

Thank you very much Walter Roberson . You really helped me here.