Legend colour box without plot

[Adam Armstrong]

Hi,

I'd like to plot a coloured 'legend box' without plotting to the graph.
I create aggregate graphs with in/out values for a bunch of entities, in
values first as a stack and then out values as a negative stack in two
different colours. I'd like to place the in and out colours for each
entity together.

http://www.observernms.org/example-1.png

For example, i'd like the legend to be :

[GREENA] [BLUEA] <description>  <values>
[GREENB] [BLUEB] <description>  <values>

The graph is currently built like this :

AREA:inB2976#B6D14B:'GigabitEthernet2/0/0 ':STACK
GPRINT:inB2976:LAST:%6.2lf%sbps
GPRINT:inB2976:MAX:%6.2lf%sbps
GPRINT:totin2976:%6.2lf%sB
COMMENT:' '
GPRINT:outB2976temp:LAST:%6.2lf%sbps
GPRINT:outB2976temp:MAX:%6.2lf%sbps
GPRINT:totout2976:%6.2lf%sB\\n
AREA:inB2985#91B13C:'GigabitEthernet2/0/9 ':STACK
GPRINT:inB2985:LAST:%6.2lf%sbps
GPRINT:inB2985:MAX:%6.2lf%sbps
GPRINT:totin2985:%6.2lf%sB COMMENT:' '
GPRINT:outB2985temp:LAST:%6.2lf%sbps
GPRINT:outB2985temp:MAX:%6.2lf%sbps
GPRINT:totout2985:%6.2lf%sB\\n
AREA:outB2976#A0A0E5::
AREA:outB2985#8080BD::STACK
HRULE:0#999999

Thanks in advance!
adam.

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[Alex van den Bogaerdt-2]

----- Original Message -----
From: "Adam Armstrong" <lists@...>
To: <rrd-users@...>
Sent: Wednesday, October 14, 2009 11:41 AM
Subject: [rrd-users] Legend colour box without plot


> Hi,
>
> I'd like to plot a coloured 'legend box' without plotting to the graph.


Not sure if it's going to work, but my first attempt would be to have a CDEF
to always produce NaN, and just plot this one.

Something like:
cdef:nan=UNKN,ds0,POP
LINE1:nan#00CC00:input1
LINE1:nan#0000FF:output1
LINE1:nan#FF0000:input2
LINE1:nan#FFCC00:output2

and so on.

You can plot the real data without a legend, and do so in the correct
stacking order.

HTH
Alex

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[Adam Armstrong]

>  
>> Hi,
>>
>> I'd like to plot a coloured 'legend box' without plotting to the graph.
>>    
>
>
> Not sure if it's going to work, but my first attempt would be to have a CDEF
> to always produce NaN, and just plot this one.
>
> Something like:
> cdef:nan=UNKN,ds0,POP
> LINE1:nan#00CC00:input1
> LINE1:nan#0000FF:output1
> LINE1:nan#FF0000:input2
> LINE1:nan#FFCC00:output2
>
> and so on.
>
> You can plot the real data without a legend, and do so in the correct
> stacking order.
>  

Doesn't help me do what i want at all, though. I want two legend boxes
next to eachother with no legend for one of them. RRDTool always removes
the box if there is no legend for it.

using /s helped, but it's still a bit tall

adam.

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