| Class | SVG::Graph::TimeSeries |
| In: |
temp/Graph/TimeSeries.rb
|
| Parent: | Plot |
require 'SVG/Graph/TimeSeriess'
# Data sets are x,y pairs
data1 = ["6/17/72", 11, "1/11/72", 7, "4/13/04 17:31", 11,
"9/11/01", 9, "9/1/85", 2, "9/1/88", 1, "1/15/95", 13]
data2 = ["8/1/73", 18, "3/1/77", 15, "10/1/98", 4,
"5/1/02", 14, "3/1/95", 6, "8/1/91", 12, "12/1/87", 6,
"5/1/84", 17, "10/1/80", 12]
graph = SVG::Graph::TimeSeries.new( {
:width => 640,
:height => 480,
:graph_title => title,
:show_graph_title => true,
:no_css => true,
:key => true,
:scale_x_integers => true,
:scale_y_integers => true,
:min_x_value => 0,
:min_y_value => 0,
:show_data_labels => true,
:show_x_guidelines => true,
:show_x_title => true,
:x_title => "Time",
:show_y_title => true,
:y_title => "Ice Cream Cones",
:y_title_text_direction => :bt,
:stagger_x_labels => true,
:x_label_format => "%m/%d/%y",
})
graph.add_data({
:data => projection
:title => 'Projected',
})
graph.add_data({
:data => actual,
:title => 'Actual',
})
print graph.burn()
Produces a graph of temporal scalar data.
www.germane-software/repositories/public/SVG/test/timeseries.rb
The default stylesheet handles upto 10 data sets, if you use more you must create your own stylesheet and add the additional settings for the extra data sets. You will know if you go over 10 data sets as they will have no style and be in black.
Unlike the other types of charts, data sets must contain x,y pairs:
[ "12:30", 2 ] # A data set with 1 point: ("12:30",2)
[ "01:00",2, "14:20",6] # A data set with 2 points: ("01:00",2) and
# ("14:20",6)
Note that multiple data sets within the same chart can differ in length, and that the data in the datasets needn‘t be in order; they will be ordered by the plot along the X-axis.
The dates must be parseable by ParseDate, but otherwise can be any order of magnitude (seconds within the hour, or years)
Sean E. Russell <serATgermaneHYPHENsoftwareDOTcom>
Copyright 2004 Sean E. Russell This software is available under the Ruby license
| popup_format | [RW] | The formatting used for the popups. See x_label_format |
| timescale_divisions | [RW] |
Use this to set the spacing between dates on the axis. The value must be of
the form "\d+ ?(days|weeks|months|years|hours|minutes|seconds)?"
EG: graph.timescale_divisions = "2 weeks" will cause the chart to try to divide the X axis up into segments of two week periods. |
| x_label_format | [RW] | The format string use do format the X axis labels. See Time::strformat |
Add data to the plot.
d1 = [ "12:30", 2 ] # A data set with 1 point: ("12:30",2)
d2 = [ "01:00",2, "14:20",6] # A data set with 2 points: ("01:00",2) and
# ("14:20",6)
graph.add_data(
:data => d1,
:title => 'One'
)
graph.add_data(
:data => d2,
:title => 'Two'
)
Note that the data must be in time,value pairs, and that the date format may be any date that is parseable by ParseDate.
In addition to the defaults set by Graph::initialize and Plot::set_defaults, sets: