explain yticklabel(i:i,1:2) = [num2str(ytick(i),'%2.0f)')]; in matlab

yticklabel(i:i, 1:2) = [num2str(ytick(i),'%2.0f)')]; is a code line in MATLAB that is used to customize the y-axis tick labels of a plot.

This code line is assigning a formatted string to the yticklabel array for a specified range of indices i:i and the second dimension 1:2.

The formatted string is generated by the num2str function which converts the numerical value of ytick(i) to a string. %2.0f in the format string is a specifier that formats the output string with 2 spaces left-justified and has no decimal point.

Finally, the resulting string is enclosed in square brackets [ ], which concatenate the string along the second dimension, therefore 1:2 of yticklabel is assigned the formatted string.

In summary, the code customizes the y-axis tick labels by converting numerical values to formatted string for a specified range of indices.