Chart::Strip - Draw strip chart type graphs.
use Chart::Strip;
my $ch = Chart::Strip->new(
title => 'Happiness of our Group',
# other options ...
);
$ch->add_data( $davey_data, { style => 'line',
color => 'FF0000',
label => 'Davey' } );
$ch->add_data( $jenna_data, { style => 'line',
color => '00FF88',
label => 'Jenna' } );
print $ch->png();
The Chart::Strip package plots data values versus time graphs, such as used for
seismographs, EKGs, or network usage reports.
It can plot multiple data sets on one graph. It offers several styles of plots.
It automatically determines the proper ranges and labels for both axii.
$chart = Chart::Strip->new();
$chart = Chart::Strip->new(
option1 => value,
option2 => value,
);
If no options are specified, sensible default values will be used. The following
options are recognized:
- "width"
- The width of the image
- "height"
- The height of the image.
- "title"
- The title of the graph. Will be placed centered at the
top.
- "x_label"
- The label for the x axis. Will be placed centered at the
bottom.
- "y_label"
- The label for the y axis. Will be placed vertically along
the left side.
- "draw_grid"
- Should a grid be drawn on the graph?
- "draw_border"
- Should a border be drawn around the edge of the image?
- "draw_tic_labels"
- Should value labels be shown?
- "draw_data_labels"
- Should each data set be labeled?
- "transparent"
- Should the background be transparent?
- "grid_on_top"
- Should the grid be drawn over the data (1) or below the
data (0)?
- "binary"
- Use powers of 2 instead of powers of 10 for the y axis
labels.
- "data_label_style"
- Style for drawing the graph labels. "text" or
"box"
- "thickness"
- Thickness of lines in pixels. (Requires GD newer than
$VERSION).
- "skip_undefined"
- Don\'t draw a line into or out of a datapoint whose value
is undefined. If false, undefined values are treated as though they were
0.
- "boxwidth"
- Width of boxes for box style graphs. The width may also be
specified as "width" in the data options or per point. If no
width is specified a reasonable default is used.
$chart->add_data( $data, $options );
The data should be an array ref of data points. Each data point should be a hash
ref containing:
{
time => $time_t, # must be a unix time_t
value => $value, # the data value
color => $color, # optional, used for this one point
}
or, range style graphs should contain:
{
time => $time_t, # must be a unix time_t
min => $low, # the minimum data value
max => $high, # the maximum data value
color => $color, # optional, used for this one point
}
and the options may contain:
{
style => 'line', # graph style: line, filled, range, points, box
color => 'FF00FF', # color used for the graph
label => 'New England', # name of the data set
}
points style graphs may specify the point diameter, as "diam"
box style graphs may specify the box width, as "width"
line and filled graphs may specify a "smooth" parameter, to connect
points using smooth curves instead of straight lines. A value of 1 is
recommended, larger values will be less smooth.
line, points, box, and filled graphs may specify a drop shadow, consisting of a
hashref containing "dx", "dy", "dw", and
optionally, "color"
shadow => { dx => 3, dy => 3, dw => 3, color => 'CCCCCC' }
- $chart->png()
- Will return the PNG image
- $chart->jpeg()
- Will return the jpeg image
- $chart->gd()
- Will return the underlying GD object.
http://argus.tcp4me.com/shots.html
http://search.cpan.org/src/JAW/Chart-Strip-1.07/eg/index.html
This software may be copied and distributed under the terms found in the Perl
"Artistic License".
A copy of the "Artistic License" may be found in the standard Perl
distribution.
There are no known bugs in the module.
Yellowstone National Park.
Jeff Weisberg - http://www.tcp4me.com