hold on does not work

Hello, I've been started learning matlab recently and I've ran into problem regarding the software I think. I've been taught that the hold on command should allow me to plot different graphs in the same figure but i doesn't work for me. When I run hold on it just creates a new figure with the old graph removed and when I plot a new one the old one is still gone. When I asked my teacher he said that's not how it should work. I re-installed the program but the problem is still there, do you know why?

How i write the code:

>> x1 = linspace((-2), 2, 300);

>> y1 = 2 + (x1.^2);

>> plot(x1, y1)

>> hold on

>> x2 = linspace((-2), 2, 5);

>> y2 = 2 + (x2.^2);

>> plot(x2, y2)

When I write hold on x1, y2 disappear and the code ends with only plotting x2, y2.

[Vivek Anand]

Hi , I'm facing the same issue. Could you please tell how you resolved it?

Answer 1

[Albin Malmqvist]

Hello everybody, it works now, thanks for your help!

[Walter Roberson]

What turned out to be the problem?

Answer 2

[Walter Roberson]

A small number of people have reported similar situations. If I recall correctly, for most of them the cure was update their graphics drivers; but I seem to recall that a few people had to switch to

opengl software

[Albin Malmqvist]

Ok will try it, thanks.

[Albin Malmqvist]

Still doesn't work...

Answer 3

[Steven Lord]

Can you confirm that you're calling the hold function included in MATLAB and not a different hold.m that you've written and/or downloaded?

which -all hold