saveas throws "Invalid Simulink object handle" error

Hello All,

I am trying to save a plot in .png format. I am using a code which looks something like this:

figure (2)
h2 = hist(variable1(:,2),50);
xlabel('Error');
ylabel('Error Distribution');
string1 = strcat('Histogram',10,'Variable1'); %10 is added for \n
title(string1);
saveas(h2,'better_system\hist_variable1.png');

when I run this piece of code, I see the following error:

??? Error using ==> saveas at 73 Invalid Simulink object handle.

Answer 1

[TAB]

hist not returns the figure handle. See 'help hist'.

Try

h2=figure(2);
hist(variable1(:,2),50);