[rrd-users] Create a graph with different positive and negative Y axis

Simon Hobson linux at thehobsons.co.uk
Thu Aug 5 08:54:29 CEST 2010

JoeSpam8 wrote:

>I want to monitor my bandwidth where I have a 8192/768Kbit internet
>connection. My outgoing Y-axis is negative so I can have both in- and
>outgoing values in the same graph. This gives an uneven graph where I barely
>can see my upload speed on the negative Y-axis.
>Is it possible to let the incoming-Y-axis go to fx. 9Mbit and the
>outgoing-Y-axis to fx. 800Kbit? Fx. divide the graph in two where the
>positive and the negative Y axis is the same size.

Not directly. What you could do is rescale the data - and so (for 
example) byte/s for inbound and bits/s for upload (ie multiply your 
data by -8 instead of -1). Leave the units off the Y axis labels, and 
add a note elsewhere to clarify what's-what unit wise.

Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
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