How can I reverse the direction of the rows and columns using printmat?

When I use this code:

Depth_of_cut = [1, 2, 3, 4];
Feedrate = [0.1, 0.2, 0.3, 0.4];
Fv = magic(4);

printmat(Fv,'Tangential Force, N', num2str(Depth_of_cut), num2str(Feedrate))

The result will be:

Tangential Force, N = 
                       0.1          0.2          0.3          0.4
            1     16.00000      2.00000      3.00000     13.00000
            2      5.00000     11.00000     10.00000      8.00000
            3      9.00000      7.00000      6.00000     12.00000
            4      4.00000     14.00000     15.00000      1.00000

But I want it to be like:

Tangential Force, N =               
            4      4.00     14.00     15.00      1.00
            3      9.00      7.00      6.00     12.00
            2      5.00     11.00     10.00      8.00
            1     16.00      2.00      3.00     13.00                      
                   0.1       0.2       0.3       0.4

So basically I would like to: 1. Reverse the rows to be started from the bottom to the top (The matrix and the rows numbers). 2. Put the columns numbers in the bottom of the table. 3. If there is a way to control the decimal using printmat would be good, otherwise it will be ok.

Thanks a lot,

Answer 1

[Image Analyst]

Check out the flipud() function.

[Image Analyst]

Haitham's Answer moved here:

When I tried flipud on the matrix it works, but with rows names it didn't. Then I tried to use the function flip and it works well. So the code now is:

Depth_of_cut = [1, 2, 3, 4];
Feedrate = [0.1, 0.2, 0.3, 0.4];
Fv = magic(4);

printmat(flipud(Fv),'Tangential Force, N', flip(num2str(Depth_of_cut)), num2str(Feedrate))

And the result is:

Tangential Force, N = 
                       0.1          0.2          0.3          0.4
            4      4.00000     14.00000     15.00000      1.00000
            3      9.00000      7.00000      6.00000     12.00000
            2      5.00000     11.00000     10.00000      8.00000
            1     16.00000      2.00000      3.00000     13.00000

Which is good. Now, the columns name, any idea how to place it in the bottom of the table.

Thank you.

[Image Analyst]

What are the column names? If you're printing to the command window, you can simply use fprintf() to print whatever you want:

fprintf('Column 1     Column 2     Column 3    Column 4    Column 5'\n');

[Haitham]

The columns names are: 0.1, 0.2, 0.3 and 0.4 which is the Feedrate values. These values should be entered by the user in terms of the number and the values itself, so we do not know how many columns (number of values) and the values itself. Thus, using fprintf function is not an option as the number of the columns are subjected to change.

By the way, the flip function can be used with both, the matrix and the string as:

printmat(flip(Fv),'Tangential Force, N', flip(num2str(Depth_of_cut)), num2str(Feedrate))

Answer 2

[Thorsten]

Use my function printmapud:

function printmapud(a,name,rlab,clab)

T = evalc('printmat(flipud(a),name,fliplr(rlab),clab);');
C = regexp(T, '\n', 'split');
ind = [1 2 4:numel(C)-2 3 numel(C)-1 numel(C)];
for i = ind
  disp(C{i})
end

[Haitham]

it says:

Error using printmat (line 61)
Not enough column labels.

I didn't understand why the error occurs as I have no idea about the functions that you used in the code.

[Thorsten]

Strange. If I type

 printmatud(Fv,'Tangential Force, N', num2str(Depth_of_cut), num2str(Feedrate))

I get

Tangential Force, N = 
            4      4.00000     14.00000     15.00000      1.00000
            3      9.00000      7.00000      6.00000     12.00000
            2      5.00000     11.00000     10.00000      8.00000
            1     16.00000      2.00000      3.00000     13.00000
                       0.1          0.2          0.3          0.4

which is exactly what you want...

[Haitham]

Oh no! what a mistake! I tried it again and it works well, my mistake, sorry about that. The function works well until 5 columns but when it comes to more than 5 columns it will mess up. Thank you.

[Thorsten]

Thank you for re-testing my function. Short comment on the why it "messes up", as you call it: For more than 5 columns it "messes up" by inserting a line break, same as printmat.