X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=doc%2Frrdgraph.pod;h=f89409728d76b0d9583ffe7eb77b5e261d8c91e3;hb=4e8787fdbff3ddd4044e19cf37b9e3a54b5ef0cb;hp=091940341409fb0b38a451a5bdfd0b465f911946;hpb=8be5097fd90e7682baaf2c143fc45f352ba3159b;p=rrdtool.git diff --git a/doc/rrdgraph.pod b/doc/rrdgraph.pod index 0919403..f894097 100644 --- a/doc/rrdgraph.pod +++ b/doc/rrdgraph.pod @@ -1,6 +1,6 @@ =head1 NAME -rrdgraph - Round Robin Database tool grapher functions +rrdgraph - Round Robin Database tool graphing functions =head1 SYNOPSIS @@ -30,10 +30,10 @@ If you want to display averages, maxima, percentiles, etcetera it is best to collect them now using the B> statement. Currently this makes no difference, but in a future version -of rrdtool you may want to collect these values before consolidation. +of RRDtool you may want to collect these values before consolidation. The data fetched from the B is then B so that -there is exactly one datapoint per pixel in the graph. If you do +there is exactly one data point per pixel in the graph. If you do not take care yourself, B will expand the range slightly if necessary. Note, in that case the first and/or last pixel may very well become unknown! @@ -77,7 +77,7 @@ be specified in several formats, see L and L. By default, B calculates the width of one pixel in the time domain and tries to get data from an B with that -resolution. With the B option you can alter this behaviour. +resolution. With the B option you can alter this behavior. If you want B to get data at a one-hour resolution from the B, set B to 3'600. Note: a step smaller than one pixel will silently be ignored. @@ -117,7 +117,7 @@ the graph. [B<-r>|B<--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 behaviour by +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 B to B. Autoscaling will still permit those boundaries to be stretched unless the B option is @@ -151,12 +151,12 @@ and thus the throughput may be higher than the WAN line speed. [B<-N>|B<--no-gridfit>] -In order to avoid anti-aliasing blurring effects rrdtool snaps +In order to avoid anti-aliasing blurring effects RRDtool snaps points to device resolution pixels, this results in a crisper appearance. If this is not to your liking, you can use this switch -to turn this behaviour off. +to turn this behavior off. -Gridfitting is turned off for PDF, EPS, SVG output by default. +Grid-fitting is turned off for PDF, EPS, SVG output by default. =head2 X-Axis @@ -165,7 +165,7 @@ Gridfitting is turned off for PDF, EPS, SVG output by default. [B<-x>|B<--x-grid> B] The x-axis label is quite complex to configure. If you don't have -very special needs it is probably best to rely on the autoconfiguration +very special needs it is probably best to rely on the auto configuration to get this right. You can specify the string C to suppress the grid and labels altogether. @@ -193,6 +193,11 @@ This places grid lines every 8 hours, major grid lines and labels each day. The labels are placed exactly between two major grid lines as they specify the complete day and not just midnight. +[B<--week-fmt> I] + +By default rrdtool uses "Week %V" to render the week number. With this option +you can define your own format, without completely overriding the xaxis format. + =head2 Y-Axis [B<-y>|B<--y-grid> IB<:>I