Unable to control floating point display?

I have this result :

There should be three Lab numbers on the third line but only L and a are showing, with two decimals of precision each (50.91 -46.21 ,). I have not completely figured out how to control the num2str conversion, the best I had was this :

Line1 = ['(X,Y) = ', num2str(posX), ', ', num2str(posY)];

Line2 = ['RGB = ', num2str(RGB(1,1,1)), ', ', num2str(RGB(1,1,2)), ' , ', num2str(RGB(1,1,3))];

Line3 = ['Lab = ', num2str(Lab(1,1,1),2), ', ', num2str(Lab(1,1,2),2), ' , ', num2str(Lab(1,1,3),2)];

Line4 = ['Lch = ', num2str(Lab(1,1,1),2), ', ', num2str(chroma,2), ' , ', num2str(hueAngle,3), '°'];

I have not figured out yet the proper parameters to get a conversion from double to string with no decimal part?

Answer 1

[Stephen23]

It would be better to use SPRINTF rather than NUM2STR. For example:

Line1 = sprintf('(X,Y) = %u, %u', posX, posY);
Line2 = sprintf('RGB = %.0f, %.0f, %.0f', RGB(1,1,1:3));
Line3 = sprintf('RGB = %.2f, %.2f, %.2f', Lab(1,1,1:3));

[Roger Breton]

Thank you so much!!!!

Answer 2

[Walter Roberson]

round()

[Roger Breton]

Thank you so much Mr. Roberson :-)

[Roger Breton]

I ended up using your solution ;-)