Two graphs in one picture 2

[Rodrigo245]

Is it possible to draw two graphs in one picture?

For example: I have inequation:

abs(x^2 + 3x + 2) < abs(x^3 + 1)


I know how to draw one graph at once:

y = abs(x^2 + 3*x + 2)

ezplot

y1 = abs(x^3 + 1)

ezplot(y1)


But I would like to draw both graph on the same picture, so I can compare the results. Is this possible?

 

[brokensoul]

Rodrigo,

Try this... It works in Matlab 7.0 and i am hopeing that the 'hold'command exists in yor version as well.

y = abs(x^2 + 3*x + 2)
y1 = abs(x^3 + 1)
ezplot
hold
ezplot(y1)

 

[Rodrigo245]

Brokensoul

thanks a lot for your answer. Do you know also how to change the colour of the graph so I can have one graph for example red and the other blue?


Greetings,

Frenky

 

[brokensoul]

Frenky,

In future posts tell people what the version number and the name of the software is. And perhaps if you are having a module issue tell which module you are using so people know how to approach your question.


This is a chunk of the help files that should be included in you matlab software. I am not sure but i bet maple had similar files.

http://www.mathworks.com/access/helpdesk/help/techdoc/ref/linespec.html

the website above should of shown you linespec which are all the modifiers that you can use in plot() or line() or similar commands.

If you have further questions about functions and thier uses. I would go to

http://www.mathworks.com

and use thier reference pages to see if it can answer your question first before coming on to this forum.

I hope this helps....

BSK

 

[Rodrigo245]

brokensoul, it helps a lot. But tell me - is there a way to coloring the graph with ezplot command?

 

[SomptingGuy]

A quick look at the help page for ezplot shows that you can return handles to your plotted objects: h=ezplot(..

Give the handles, anything is possible. Changing the colour is a doddle. For example:

h=ezplot('cos(x)');
set(h,'color','red');

 

[Rodrigo245]

The best! Thanks a lot!