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

Question

Haitham 2015-7-2

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/227107-how-can-i-reverse-the-direction-of-the-rows-and-columns-using-printmat

编辑： Thorsten 2015-7-7

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,

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Answer 1

Image Analyst 2015-7-2

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https://ww2.mathworks.cn/matlabcentral/answers/227107-how-can-i-reverse-the-direction-of-the-rows-and-columns-using-printmat#answer_184840

Check out the flipud() function.

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Image Analyst 2015-7-3

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 2015-7-5

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))

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Answer 2

Thorsten 2015-7-3

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https://ww2.mathworks.cn/matlabcentral/answers/227107-how-can-i-reverse-the-direction-of-the-rows-and-columns-using-printmat#answer_184928

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

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Haitham 2015-7-6

编辑：Haitham 2015-7-6

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 2015-7-7

编辑：Thorsten 2015-7-7

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.

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