[rrd-users] Re: Graph question

[Alex van den Bogaerdt]

Brendan Laurence wrote:

> I'm a newbie to rrd ... recently converted from MRTG and I'm trying to 
> figure out how to create a graph using with the following options:
> 
> a.) one rrd database


> b.) create a single colored area between the max inbound values and
> min inbound values on ds0 .. plot the area on the graph.

You mean: if min-value is 50 and max-value is 100:
0 to 50 transparent and 50 to 100 colored?

That should be done by using an AREA without a color, followed by STACK:

DEF:ds0_min=/path/to/rrd:ds0:MIN
DEF:ds0_avg=/path/to/rrd:ds0:AVERAGE
DEF:ds0_max=/path/to/rrd:ds0:MAX
AREA:ds0_min
STACK:ds0_max#00CC00

> c.) plot the average inbound value in (b.) in a different colour on the 
> graph.

You have to use a line here, or else you will always overlay the minimum.

LINE1:ds0_avg#003300:" In bytes"

> d.) create another single colored area between the max outbound values and 
> the min outbound values on ds1 and plot them under the xaxis so it does not 
> overwrite (b + c).

DEF:ds1_min_tmp=/path/to/rrd:ds1:MIN
DEF:ds1_avg_tmp=/path/to/rrd:ds1:AVERAGE
DEF:ds1_max_tmp=/path/to/rrd:ds1:MAX
CDEF:ds1_min=ds1_min_tmp,-1,*
CDEF:ds1_avg=ds1_avg_tmp,-1,*
CDEF:ds1_max=ds1_max_tmp,-1,*
AREA:ds1_min
STACK:ds1_max#0000FF

> e.) plot the average outbound values in (d.) in a different colour

LINE1:ds1_avg#003300:"Out bytes"

HTH
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