Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » Software » comp.soft-sys.matlab

Topic: ploting in db
Replies: 5   Last Post: Mar 19, 2013 6:49 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Derek Goring

Posts: 3,919
Registered: 12/7/04
Re: ploting in db
Posted: Mar 19, 2013 2:54 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

On Wednesday, March 20, 2013 4:58:10 AM UTC+13, Yousef wrote:
> Hi Guys,
>
>
>
> Can anybody help me to change my y-axis to (db) logarithmic scale..
>
> part of my code looks like:
>
>
>
>
>
> c=sqrt(abs(data(:,2)).^2 + abs(data(:,3)).^2);
>
> b=data(:,1);
>
> tmp=folderContents(i,:);
>
> plot(b,c,'red');
>
>
>
> BUT: I do not want to choose some commands like semilogy, loglog ...etc
>
> Tanks in advance for your help.......


To plot db on the y-axis, it should be:
plot(b,10*log10(c),'r')



Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.