X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=doc%2Frrdgraph.pod;h=b605fae5de2cf5e994e8b2bf077d36e38c68f36e;hb=8be11ca3728bf1cbae3be2aaa5faea1095fe3b2a;hp=812b24786fff8a26b2cded09ecd6633fff56672b;hpb=c10fefe3a9cdbf1d9daac1bc6bf687362d59115d;p=rrdtool.git diff --git a/doc/rrdgraph.pod b/doc/rrdgraph.pod index 812b247..b605fae 100644 --- a/doc/rrdgraph.pod +++ b/doc/rrdgraph.pod @@ -146,13 +146,12 @@ and thus the throughput may be higher than the WAN line speed. [B<-N>|B<--no-gridfit>] -In order to avoid anti-aliasing effects gridlines are placed on -integer pixel values. This is by default done by extending -the scale so that gridlines happens to be spaced using an -integer number of pixels and also start on an integer pixel value. -This might extend the scale too much for some logarithmic scales -and for linear scales where B<--alt-autoscale> is needed. -Using B<--no-gridfit> disables modification of the scale. +In order to avoid anti-aliasing blurring effects rrdtool snaps +points to device resolution pixels, this results in a crisper +aperance. If this is not to your liking, you can use this switch +to turn this behaviour off. + +Gridfitting is turned off for PDF, EPS, SVG output by default. =item Grid @@ -320,13 +319,16 @@ gravity, and I is a decimal number (size in points) or optionally followed by the unit modifier "px" for absolute size. Any one of the options may be absent. -[B<-R>|B<--font-render-mode> {I,I,I}] +[B<-R>|B<--font-render-mode> {B,B,B}] -(this gets ignored in 1.3 for now!) +There are 3 font render modes: + +B: Full Hinting and Antialiasing (default) + +B: Slight Hinting and Antialiasing + +B: Full Hinting and NO Antialiasing -This lets you customize the strength of the font smoothing, -or disable it entirely using I. By default, I -font smoothing is used. [B<-B>|B<--font-smoothing-threshold> I] @@ -336,6 +338,14 @@ This specifies the largest font size which will be rendered bitmapped, that is, without any font smoothing. By default, no text is rendered bitmapped. +[B<-G>|B<--graph-render-mode> {B,B}] + +There are 2 render modes: + +B: Graphs are fully Antialiased (default) + +B: No Antialiasing + [B<-E>|B<--slope-mode>] RRDtool graphs are composed of stair case curves by default. This is in line with