Saving a figure with multiple graphs

Hi all, Assume that I have the following plot: fig = plot(t,xt, t, yt);

Now, if i want to save such a plot using saveas(fig,'ddddd.jpg'), I get into trouble. It seems to be because fig is now a 2x1 handle which probably saveas is not supporting ( I am not sure though). I have tried hgsave. But, the jpg file was not opening. Any comments?

Answer 1

[Matt Kindig]

saveas() takes a figure handle. The output of a plot() command is a line handle (or a 2x1 vector of line handles, as you have it). Instead, do this:

plot(t,xt, t, yt);
fig = gcf;
saveas(fig, 'dddddd.jpg');

This should work.

[Payam]

It worked very well. Thanks! The way you approached the problem makes an absolute sense. However, the problem is when you assign fig to gcf, then you are not able to change the properties such as 'lineWidth' etc using set(fig,'lineWidth',2,'MarkerSize',...) as it is not clear which handle you are referring to. Can I ask for your inputs on that? Thanks again.

[Matt Kindig]

Payam, I think you are confused as to what 'fig' is. The handle 'fig' (which I have get set to the output of the gcf() function), is a handle to a figure, which doesn't have those properties at all.

Rather, you need to set the output of the plot() command (which outputs a line handle with properties such as 'lineWidth', 'MarkerSize', etc.) to a variable. Such as:

h = plot(t, xt, t, yt);
% h will be a 2x1 vector of LINE (not figure) handles
set(h(1), 'lineWidth', 2, 'MarkerSize, 5, ...);  %set first line properties
set(h(2), 'lineWidth', 5, 'MarkerSize', 10, ...);  %set second line properties

%you can also set a bunch of line handles to the same properties, using:
set(h,'lineWidth', 3, 'MarkerSize', 8, ....);