CODEWITHSUNDEEP
matlabplotlabel
ricki_nuehle
ricki_nuehle

Reputation: 3

MATLAB num2str digits not displayed correctly in plot3

I need to plot straight lines in-between points. Further I want to label those lines with numbers. It all works fine, but as soon as I have one-digit numbers AND two-digit numbers (e.g. 5 and 30) the displayed number in the plot is only 3.

How do I make MATLAB plot the full digit number?

My MATLAB code is:

numbers_string = num2str(numbers)
for i = 1 : number_of_lines
  plot3([x_start(i); x_end(i)],[y_start(i); y_end(i)],[z_start(i); z_end(i)], '-k');
  text((x_start(i)+x_end(i))/2, (y_start(i)+y_end(i))/2, (z_start(i)+z_end(i))/2, numbers_string(i))
end

The length of the number_of_lines and the numbers_string is the same, so my plot is working fine, just the labelling is causing problems.

I tried formatting but it did not work either.

Upvotes: 0

Views: 141

Answers (1)

Steve
Steve

Reputation: 1587

The i-th entry of a string will be a single character. For example, if

numbers = [42 99 1];
num_str = num2str(numbers);

then num_str(1), num_str(2) and num_str(3) will be '4', '2' and ' '.

Instead of

number_str = num2str(numbers)
text(x,y,z,num2str(numbers_str(i)))

consider

text(x,y,z,num2str(numbers(i)))

Upvotes: 2

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