S<[B<-e>|B<--end> I<seconds>]>
S<[B<-x>|B<--x-grid> I<x-axis grid and label>]>
S<[B<-y>|B<--y-grid> I<y-axis grid and label>]>
-S<[B<--alt-y-grid>]>
-S<[B<--alt-autoscale>]>
-S<[B<--alt-autoscale-max>]>
-S<[B<--units-exponent>]> I<value>]>
+S<[B<-Y>|B<--alt-y-grid>]>
+S<[B<-A>|B<--alt-autoscale>]>
+S<[B<-M>|B<--alt-autoscale-max>]>
+S<[B<-X>|B<--units-exponent>]> I<value>]>
S<[B<-v>|B<--vertical-label> I<text>]>
S<[B<-w>|B<--width> I<pixels>]>
S<[B<-h>|B<--height> I<pixels>]>
S<[B<-i>|B<--interlaced>]>
S<[B<-f>|B<--imginfo> I<formatstring>]>
-S<[B<-a>|B<--imgformat> B<
GIF>|B<PNG>]>
+S<[B<-a>|B<--imgformat> B<
SVG>|B<PNG>]>
S<[B<-z>|B<--lazy>]>
S<[B<-o>|B<--logarithmic>]>
S<[B<-u>|B<--upper-limit> I<value>]>
S<[B<-l>|B<--lower-limit> I<value>]>
S<[B<-g>|B<--no-legend>]>
S<[B<-r>|B<--rigid>]>
-S<[B<--step> I<value>]>
+S<[B<-S>|B<--step> I<value>]>
S<[B<-b>|B<--base> I<value>]>
S<[B<-c>|B<--color> I<COLORTAG>B<#>I<rrggbb>]>
S<[B<-t>|B<--title> I<title>]>
=item I<filename>
-The name of the graph to generate. Since B<rrdtool> outputs
-GIFs and PNGs, it's recommended that the filename end in either
-F<.gif> or F<.png>. B<rrdtool> does not enforce this, however.
+The name of the graph to generate. Since B<RRDtool> outputs
+SVGs and PNGs, it's recommended that the filename end in either
+F<.svg> or F<.png>. B<RRDtool> does not enforce this, however.
If the I<filename> is set to '-' the image file will be written
to standard out. All other output will get suppressed.
-PNG output is recommended, since it takes up to 40% less disk space
-and 20-30% less time to generate than a GIF file.
-
If no graph functions are called, the graph will not be created.
=item B<-s>|B<--start> I<seconds> (default end-1day)
=item B<-w>|B<--width> I<pixels> (default 400 pixel)
Width of the drawing area within the graph. This affects the size of the
-gif.
+image.
=item B<-h>|B<--height> I<pixels> (default 100 pixel)
Width of the drawing area within the graph. This affects the size of the
-gif.
+image.
=item B<-i>|B<--interlaced> (default: false)
-If you set this option, then the resulting GIF will be interlaced.
+If you set this option, then the resulting image will be interlaced.
Most web browsers display these incrementally as they load. If
-you do not use this option, the GIFs default to being progressive
+you do not use this option, the image defaults to being progressive
scanned. The only effect of this option is to control the format
-of the GIF on disk. It makes no changes to the layout or contents
+of the image on disk. It makes no changes to the layout or contents
of the graph.
=item B<-f>|B<--imginfo> I<formatstring>
--imginfo '<IMG SRC="/img/%s" WIDTH="%lu" HEIGHT="%lu" ALT="Demo">'
-=item B<-a>|B<--imgformat> B<GIF>|B<PNG> (default: GIF)
+=item B<-a>|B<--imgformat> B<SVG>|B<PNG> (default: PNG)
-Allows you to produce PNG output from rrdtool.
+Allows you to produce PNG output from RRDtool.
=item B<-z>|B<--lazy> (default: false)
-Only generate the graph, if the current gif is out of date or not
+Only generate the graph, if the current image is out of date or not
existent.
=item B<-u>|B<--upper-limit> I<value> (default autoconfigure)
Defines the value normally located at the upper border of the
graph. If the graph contains higher values, the upper border will
-move upwards to accomodate these values as well.
+move upward to accommodate these values as well.
If you want to define an upper-limit which will not move in any
event you have to set the B<--rigid> option as well.
=item B<--step> I<value> (default automatic)
-By default rrdgraph calculates the width of one pixle in the time domain and
+By default rrdgraph calculates the width of one pixel in the time domain and
tries to get data at that resolution from the RRD. With this switch you can
override this behaviour. If you want rrdgraph to get data at 1 hour
resolution from the RRD, then you can set the step to 3600 seconds. Note,
-that a step smaller than 1 pixle will be silently ignored.
+that a step smaller than 1 pixel will be silently ignored.
=item B<DEF:>I<vname>B<=>I<rrd>B<:>I<ds-name>B<:>I<CF>
the value of this CDEF at the previous time step. This allows you to
perform calculations across the data.
+=item COUNT
+
+Pushes the number 1 if it is at the first value of the data set, the
+number 2 if it is at the second, and so on. This special value, allows
+you to make calculations based on the position of the value within
+the data set.
+
=item INF, NEGINF
Push a positive or negative infinite (oo) value onto the stack. When
hours ahead of UTC.
Note that the timezone offset is always calculated for the time the
-current sample was taken at. It has nuthing todo with the time you are
+current sample was taken at. It has nothing to do with the time you are
doing the calculation.
=back
Calculate the chosen consolidation function I<CF> over the data-source
variable I<vname> and C<printf> the result to stdout using I<format>.
-In the I<format> string there should be a '%lf' or '%le' marker in the
+In the I<format> string there should be a '%lf', '%le' or'%lg' marker in the
place where the number should be printed.
If an additional '%s' is found AFTER the marker, the value will be scaled
B<AREA> or B<LINE?> -- you need something to stack something onto in
the first place ;)
-Note, that when you STACK onto *UNKNOWN* data, rrdtool will not draw
+Note, that when you STACK onto *UNKNOWN* data, RRDtool will not draw
any graphics ... *UNKNOWN* is not zero ... if you want it to be zero
then you might want to use a CDEF argument with IF and UN functions to
turn *UNKNOWN* into zero ...
Normally there are two space characters inserted between every two items
printed into the graph. The space following a string can be suppressed by
-putting a B<\g> at the end of the string. The B<\g> also squshes any space
+putting a B<\g> at the end of the string. The B<\g> also ignores any space
inside the string if it is at the very end of the string. This can be used
-in connection with B<%s> to supress empty unit strings.
+in connection with B<%s> to suppress empty unit strings.
GPRINT:a:MAX:%lf%s\g
=head1 NOTE on Return Values
Whenever rrd_graph gets called, it prints a line telling the size of
-the gif it has just created to STDOUT. This line looks like this: XSIZExYSIZE.
+the image it has just created to stdout. This line looks like this: XSIZExYSIZE.
=head1 EXAMPLE 1
- rrdtool graph demo.gif --title="Demo Graph" \
+ rrdtool graph demo.png --title="Demo Graph" \
DEF:cel=demo.rrd:exhaust:AVERAGE \
"CDEF:far=cel,1.8,*,32,+"" \
LINE2:cel#00a000:"D. Celsius" \
aggregating interface data where the start dates of the data sets
doesn't match.
- rrdtool graph demo.gif --title="Demo Graph" \
+ rrdtool graph demo.png --title="Demo Graph" \
DEF:idat1=interface1.rrd:ds0:AVERAGE \
DEF:idat2=interface2.rrd:ds0:AVERAGE \
DEF:odat1=interface1.rrd:ds1:AVERAGE \
to signal any unknown data.
Note that this example assumes that your data is in the positive half of the y-axis
-otherwhise you would would have to add NEGINF in order to extend the coverage
-of the rea to whole graph.
+otherwise you would would have to add NEGINF in order to extend the coverage
+of the area to whole graph.
=head1 EXAMPLE 4
can be used to generate the graph of a time series with confidence bands and
failures.
- rrdtool graph example.gif \
+ rrdtool graph example.png \
DEF:obs=monitor.rrd:ifOutOctets:AVERAGE \
DEF:pred=monitor.rrd:ifOutOctets:HWPREDICT \
DEF:dev=monitor.rrd:ifOutOctets:DEVPREDICT \
projects / rrdtool.git / blobdiff