Hello Kyle,
I understand that you want to display gain and pole information with enough significant figures to match the precision required by your textbook assignments, while using “rlocus()” and “sgrid()” functions for control system analysis.
When utilizing Data Tips in MATLAB to select a point on the plot, it is noteworthy that MATLAB, by default, displays a restricted number of significant figures.
However, you can use “ginput” function to select a point and “sprintf” function to display gain and pole value on the plot with higher number of significant digits. Here is a sample code for the same:
tr_gain = sprintf('Gain: %.10f', selectedGain);
str_pole = sprintf('Pole: %.10f + %.10fi', real(selectedPole), imag(selectedPole));
text(x, y, {str_gain, str_pole}, 'VerticalAlignment', 'bottom');
To know more about these functions, you can refer to following MATLAB documentations:
- “ginput”-https://www.mathworks.com/help/matlab/ref/ginput.html?s_tid=doc_ta
- 'sprintf'- https://www.mathworks.com/help/matlab/ref/sprintf.html?searchHighlight=precision%20value%20in%20data%20tips&s_tid=srchtitle_support_results_3_precision%2520value%2520in%2520data%2520tips
Hope this helps,
Regards
Sankalp dev
