Hi Jason,
This can be done with standard RRDcalls within the sub GenGraph in NfSenRRD.pm
However, using different colours can help too.

Cheers

        - Peter

On 15/11/12 5:22 PM, Jason Brake wrote:
> Hello!
> 
> A lot of my graphs contain both positive and negative values. To make the 
> graphs more readable, I am wondering if there is a way to draw a horizontal 
> line at 0 to more easily distinguish positive from negative?
> 
> Thanks in advance for any input.
> 
> Jason
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-- 
Be nice to your netflow data. Use NfSen and nfdump :)

------------------------------------------------------------------------------
Monitor your physical, virtual and cloud infrastructure from a single
web console. Get in-depth insight into apps, servers, databases, vmware,
SAP, cloud infrastructure, etc. Download 30-day Free Trial.
Pricing starts from $795 for 25 servers or applications!
http://p.sf.net/sfu/zoho_dev2dev_nov
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