[rrd-users] log graph problems

Jeremy Harris jgh at wizmail.org
Sun Feb 6 22:53:19 CET 2011

Trying to chase down a sudden lack, after a general system
update (to Fedora 14, rrdtool 1.4.4), of all my log-scale graphs
I get as far as im->magfact being a NaN.

a) it isn't mentioned in rrd_graph_init() - so perhaps
     it's only luck I'm getting a NaN

b) the obvious calculation done by auto_scale() is discarded
     rather than being copied into "im" by print_calc()
     (about line 1586).   The other calc of auto_scale is done
     by si_unit(), but that isn't called for log graphs.

Am I way off base?    I'm certainly confused!


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