How can I turn of Latex interptreter for the labels?
Set the 'Interpreter' property to 'none'.
xlabel('All_Vehicles',"Interpreter","none")
Also, since boxplot might be new to some people I want the symbols, whiskers, box, mean and median, to be shown like a legend in the boxplot. Is there an easy way to do that?
No. Your approach is likely the best you can do in a legend. Your code does not return an error when run on an example from the boxplot documentation page. Perhaps your boxplots of your data do not have upper whiskers?
load carsmall
boxplot(MPG)
xlabel('All_Vehicles',"Interpreter","none")
ylabel('Miles per Gallon (MPG)')
title('Miles per Gallon for All Vehicles')
L1 = findobj(gca,'Tag','Median');
L2 = findobj(gca,'Tag','Box');
L3 = findobj(gca,'Tag','Upper Whisker');
L4 = findobj(gca,'Tag','Outliers');
L5 = findobj(gca,'Tag','Mean');
legend([L1,L2,L3],{'Median','25-75 Percentile','Data boundary'},'Location','Northwest','FontSize',14)
