OpenForum RSS: RRDTOOL

RRDTOOL (sonkilla)

Thu, 16 Aug 2012 05:50:56 GMT

>> Limits
>> [-u|--upper-limit value] [-l|--lower-limit value] [-r|--rigid]
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> VDEF:margin=mline,MAX
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RRDTOOL (DeadLoco)

Sun, 12 Aug 2012 09:51:27 GMT

> Limits
> [-u|--upper-limit value] [-l|--lower-limit value] [-r|--rigid]

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CDEF:mline=value,1.4,*
VDEF:margin=mline,MAX
LINE1:margin#00000000

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RRDTOOL (sonkilla)

Sat, 11 Aug 2012 04:18:58 GMT

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RRDTOOL (chapayev)

Fri, 10 Aug 2012 17:10:31 GMT

Limits

[-u|--upper-limit value] [-l|--lower-limit value] [-r|--rigid]

By default the graph will be autoscaling so that it will adjust the y-axis to the range of the data. You can change this behavior by explicitly setting the limits. The displayed y-axis will then range at least from lower-limit to upper-limit. Autoscaling will still permit those boundaries to be stretched unless the rigid option is set.

[-A|--alt-autoscale]

Sometimes the default algorithm for selecting the y-axis scale is not satisfactory. Normally the scale is selected from a predefined set of ranges and this fails miserably when you need to graph something like 260 + 0.001 * sin(x). This option calculates the minimum and maximum y-axis from the actual minimum and maximum data values. Our example would display slightly less than 260-0.001 to slightly more than 260+0.001 (this feature was contributed by Sasha Mikheev).