How do I remove trailing zeros after rounding a matrix while retaining current rows/columns format?

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Leslie Franczek
Leslie Franczek 2018-2-7
编辑： Matt J 2018-2-7
I am trying to display a matrix that with numbers all rounded off to 1 decimal point. Currently when I round, there is a 0 that remains in the hundreths place of each number. I'd like to remove this last zero so that all my numbers only display out to the tenths place.
I have tried using the fprintf function as well as the sprintf function but I always lose the rows/column format of my matrix. Is there a way to round and then shorten an entire matrix of numbers so that there aren't any trailing zeros?
matrix = [1.34, 3.45, 2.34; 0.54, 21.34, 0.34; 11.81, 9.94, 10.02]; %3x3 matrix of data
round_matrix = round(matrix, 1); %3x3 matrix of data rounded to 1 decimal place
%My attempts thus far at removing the trailing zeros
disp_matrix = sprintf('%.1f', rounded_matrix); %This resulted in a string of all of my numbers mashed together
disp_matrix = fprintf('%.1f\n',round(Table_outnumeric)); %This resulted in all of my numbers being converted into a single column

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采纳的回答

Matt J
Matt J 2018-2-7
编辑：Matt J 2018-2-7
How about as follows,
>> disp_matrix = num2str(round_matrix, '%.1f '); disp(disp_matrix)
1.0 0.8
0.5 0.1
To be clear, though, if you want to a matrix displayed to 1 decimal place, you have no choice but to convert it to string/char type. You cannot force MATLAB to display actual numeric matrix objects to arbitrary customized precision. However, see FORMAT for the display options that you do have.

更多回答（1 个）

Matt J
Matt J 2018-2-7
disp_matrix = sprintf('%.1f ', round_matrix)
  1 个评论
Leslie Franczek
Leslie Franczek 2018-2-7
This answer results in a single row of numbers:
>> matrix = rand(2,2)
matrix =
0.9572 0.8003
0.4854 0.1419
>> round_matrix = round(matrix,1)
1.0000 0.8000
0.5000 0.1000
>> disp_matrix = sprintf('%.1f ', round_matrix)
disp_matrix =
'1.0 0.5 0.8 0.1 '
I ultimately want to retain my 2x2 matrix of the rounded numbers like this:
>> round_matrix = [1.0, 0.8; 0.5, 0.1]
1.0 0.8
0.5 0.1

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