Generating Latex table of Matlab/Octave Matrix

I created some code in Octave/Matlab to generate latex table from matrix data. I created this because in my case I was tuning some data and algorithms for a paper I was writing and I loathed entering my data into the latex over and over in large tables.

The use just needs to supply a file descriptor, names for the table rows, column, the data matrix and if desired a wrapper to wrap the data entries from the matric in any specific formatting.


Example wrapper functions

function outstr = numWrapper(value)

outstr= strcat("\\num{" , num2str (value), "}");

endfunction



function outstr = ccolWrapper(value)

outstr= strcat("\\ccol{" , num2str (value), "}");

endfunction
 

This is the code used to generate the latex

 

%

% creates a latex style table from matrix data.

% wrapper is a function used to wrap the data in each cell

% can be used to apply more formatting in latex

%

% fid is the file pointer to the file to write to

% matrix is the data matrix that will be placed starting at row 1 column 1

% rowNames is a column vector of the string names to be inserted as the names for the rows

%     size(rowNames,1) == size(columnNames,1)+1, i.e. the 

% columnNames will be used to label each of the column in the data

% wrapper is a special function that will take your input data and wrap it with latex formatting

%

% Will look like

% latex table formatting

% columnNames[0] | columnNames[1] | columnNames[2] | columnNames[2] | ...

% rowNames[0]    | matrix(0,0)    |  matrix(0,1)   |  matrix(0,2) | ...

% rowNames[1]    | matrix(1,0)    |  matrix(1,1)   |  matrix(1,2) | ...

%      .

%      .

%      .

%

%

%

%

% latex table formating



function fid = matrixToLatexTable(fid, matrix, rowNames, columnNames, wrapper )

fprintf(fid,'\\documentclass{article}\n');

fprintf(fid,'\\begin{document}\n');

fprintf(fid,' \\begin{tabular}{ |');



for col=1:size(matrix,2)+1

fprintf(fid,'c | ');

end



fprintf(fid,'}\n\\hline\n');

for col=1:size(columnNames,1)

if col==size(columnNames,1)

fprintf(fid,'  %s', columnNames(col,:))

else

fprintf(fid,'  %s & ', columnNames(col,:))

end

end   

fprintf(fid,'\n \\\\ \\hline\n');

% now write the elements of the matrix

for r=1:size(matrix,1)

fprintf(fid,' %s & ', rowNames(r,:))

for c=1:size(matrix,2)

if c==size(matrix,2)

if  true

fprintf(fid,'%s ',wrapper(matrix(r,c)));

else

fprintf(fid,'%f ', matrix(r,c));

end

else

if  true

fprintf(fid,'%s & ',wrapper(matrix(r,c)));

else

fprintf(fid,'%f & ', matrix(r,c));

end

end

end            



fprintf(fid,' \\\\ \\hline \n');

end



fprintf(fid,'\\end{tabular}\n');

fprintf(fid,'\\end{document}\n');

fclose(fid);

endfunction
 

Best of luck

- Glen