There may be "--lower-limit 0", or a (possibly invisible) line at zero.
Try amending your example with either one and see what happens. HTH Alex ----- Original Message ----- From: "Christian" <[email protected]> To: <[email protected]> Sent: Sunday, May 11, 2014 9:00 AM Subject: [rrd-users] --alt-autoscale question > Dear list, > > thanks for this great piece of software. I am using rrdtool in > pnp4nagios to plot performance data. I am plotting a temperature and > would like the y range to be set by the actual range of the data. So I > modified the corresponding pnp4nagios template to use --alt-autoscale. > Here is the command line pnp4nagios will send: > > /usr/bin/rrdtool grap - --width=500 --height=100 --start 139979062 > --vertical-label "" --title "lab_e102 / Check lab temperature" > --alt-autoscale > > However, the lower limit on the y-axis will never be adjusted and always > remain zero in the plot. > > /usr/bin/rrdtool grap - --width=500 --height=100 --start 139979062 > --vertical-label "" --title "lab_e102 / Check lab temperature" -l 21.0 -r > > will give me a scale that starts at 21.0 Celsius as expected. What am I > missing here? I am attaching a picture of the graph generated with > --alt-autoscale, but I am not sure it will make it to the list. The plot > has values for min and max included, and they are correct, so > --alt-autoscale should work. Thanks, > > Christian > > PS: This is rrdtool 1.4.7-2 as shipped by Debian wheezy. > -------------------------------------------------------------------------------- > _______________________________________________ > rrd-users mailing list > [email protected] > https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users > _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
