how to print a table with hearders all aligned to the center of each column

hello,

I am trying to print a table with headers of different lengths and numbers with different precision. all aligned to the center of the column and with a separation line that starts with the first characte of the first header and end with the last character of the last header.

this is the code I have for now:

x =1:5;
y= x.^2;
z = x*20;
table =[x; y; z];
t=strings(3);
t(1)='   x-val1234';
t(2)='     y-val123456';
t(3)='       z-val1234567890';
% pp=strcat(t(1),',',t(2),',',t(3));
pp=strcat(t(1),t(2),t(3),'\n');
fprintf(pp)
fprintf('--------------------------------\n')
fprintf('%8.2f %10.1f %12.2f\n', table)

an this is the output I get

 x-val1234     y-val123456       z-val1234567890
--------------------------------
    1.00        1.0        20.00
    2.00        4.0        40.00
    3.00        9.0        60.00
    4.00       16.0        80.00
    5.00       25.0       100.00

what I would like to get is this:

x-val1234     y-val123456       z-val1234567890
-----------------------------------------------
  1.00            1.0               20.00
  2.00            4.0               40.00
  3.00            9.0               60.00
  4.00           16.0               80.00
  5.00           25.0              100.00
    

Answer 1

[Mathieu NOE]

see attached a nice formatting piece of code for this job

example code :

data = 1e2.*rand(5,4);
fmt = {'%.3g'};
col_headers = {'a','b','c','d'};
row_headers = {'No.','1','2','3','4','5'};

out = print_table(data,fmt,col_headers,row_headers)

% save to file 
filename = 'exp.txt';
fileID = fopen(filename,'w');
fprintf(fileID,out);
fclose(fileID);

[Mathieu NOE]

yet another functions you could be interested in...

Answer 2

[Star Strider]

The easiest way is to use a table array.

x =1:5;
y= x.^2;
z = x*20;
xyz_table = table(x(:), y(:), z(:), VariableNames={'x-val1234','y-val123456','z-val1234567890'})

xyz_table = 5x3 table
    x-val1234    y-val123456    z-val1234567890
    _________    ___________    _______________

        1             1                20      
        2             4                40      
        3             9                60      
        4            16                80      
        5            25               100      

writetable(xyz_table, 'xyz_table.csv')

type('xyz_table.csv')

x-val1234,y-val123456,z-val1234567890
1,1,20
2,4,40
3,9,60
4,16,80
5,25,100

VN = xyz_table.Properties.VariableNames;

fprintf(['\n' repmat('\t%12s',1,3) '\n'], VN{:})

	   x-val1234	 y-val123456	z-val1234567890

fprintf([repmat('\t\t%g',1,3) '\n'], table2array(xyz_table))

		1		2		3
		4		5		1
		4		9		16
		25		20		40
		60		80		100

Just copy-pasting the table from the Command Window might be easiest, if you want to preserve the formatting.

.