The Graph, Scientific
Graph, Polar/Smith Chart and
Scatter mode of the 3D
Scientific Graph object provide a comparison subset mechanism. This
mechanism splits the object's subsets into two groups. The first group
comprises the normal noncomparison subsets, and the second group comprises
the comparison subsets. The second group's size (or quantity of comparison
subsets) is controlled with either the ComparisonSubsets
or RYAxisComparisonSubsets
properties. Depending on which of these two properties is used, the comparison
subsets will be plotted with respect to the left or right y axis. To help
characterize which subsets are comparison subsets, they are plotted in
a secondary plotting method PlottingMethodII.
The benefit of using ComparisonSubsets is ease of use and a more controlled
endusers interface related to forcing logical groups of data, i.e. a primay plotting style combined with an overlaying comparison group.
However, if you need more control over plotting methods, use the feature PlottingMethods which
allows per subset control of plotting methods plus per subset control of left and/or right y axis designation.
Within the demo, see example 003.
To discuss ComparisonSubset in more detail, lets look at some examples.
Example, if you have 5 subsets and set ComparisonSubsets = 2,
Subset
Index 
Group
No. 
NonComparison 
Comparison 

0 
1 
NonComparison #1 

PlottingMethod 
1 
1 
NonComparison #2 

PlottingMethod 
2 
1 
NonComparison #3 

PlottingMethod 
3 
2 

Comparison #1 
PlottingMethodII 
4 
2 

Comparison #2 
PlottingMethodII 

The Graph object can automatically generate comparison subsets through
the AutoStatSubsets property
array.
Note that comparison subsets which have identical data for all points
will not be included in the Graph Objects table section. They will
only be included into the graph section. TableComparisonSubsets
can be set to TRUE to disable this feature.
Some example scenarios are:
a) Chart with one subset as a bar and one subset
as a line.
b) Chart with three subsets as lines and two subsets
as points.
Subsets 
PlottingMethod 
PlottingMethodII 
ComparisonSubsets 
5 
Line 
Point 
2 

c) Chart with two subsets as points and three
subsets as lines and the lines are plotted with respect to the right y
axis.
d) Open/High/Low/Close chart with volume line
data on the same scale.
Subsets 
PlottingMethod 
PlottingMethodII 
ComparisonSubsets 
5 
SpecificPlotMode 
Line 
1 

Similar to ComparisonSubsets and RYAxisComparisonSubsets is
TXAxisComparisonSubsets.
The Scientific Graph uses this property to split the object's subsets
into a different two groups. The first group is plotted with respect to
the bottom x axis, and the second group is plotted with respect to the
top x axis. This property has no impact on subset plotting methods.
Chart with two subsets as points
and three subsets as lines and the lines are plotted with respect to the
right y axis and the top x axis.
