Date: Mar 19, 2013 2:21 PM
Author: dpb
Subject: Re: ploting in db
On 3/19/2013 12:05 PM, Steven_Lord wrote:

>

>

> "Yousef " <yayatoure@hotmail.com> wrote in message

> news:kia1ui$9hl$1@newscl01ah.mathworks.com...

>> 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);

...

Steven answered the axis question, I'll simply note that the above can

be written more succinctly as

c=abs(complex(data(:,2),data(:,3)));

The abs() in your expression are purely superfluous since squaring a

value makes it positive.

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