Intensity Scatter Series
An Intensity Scatter series has three data points per series element - two that
position the element along the X axis and along the Y axis, and a third that is
used to determine the color of the series element. Intensity Scatter series are
similar to Scatter series, with the addition of a varying color of each series
element based on the intensity value provided. That is, the series has an associated maximum color and
minimum color, and the color of a given element is based on where its intensity
value falls in the range of all of the seriesÕ intensity values. For example, if the min color is blue
and the max color is red, and the range of intensity values is from 10 to 20, a
given element with intensity of 12 would be colored with 80% blue and 20% red
since 12 lies 20% of the way between 10 and 20.
Intensity Scatter series may not be mixed with any other series types (due
to its unique legend). Intensity Scatter series accept dragged colors to set
the marker color. Other attributes of an Intensity Scatter series may be
changed through the Intensity Scatter Series Inspector.
Intensity Scatter Series Inspector
When an Intensity Scatter series is
selected in the chart, the Inspector displays the controls that are used to
set its attributes. The Intensity
Scatter Inspector contains a tab view with three tabs: Style, Labels, and
Trends. The contents of each of
those tabs is addressed separately below.
Style Tab
The attributes set with controls found in the tab labeled ÒStyleÓ apply only
to the currently selected Intensity Scatter series. Changing the values of
these attributes does not affect any of the other Intensity Scatter series in
the chart unless they are also selected.
¥ Min Color / Max Color
Establishes the range of colors for the series, where the Min Color and Max
Color represent the end points of a color range from which the colors of all
data element markers are set.
¥ Markers
Set the marker style and size with these
controls.
¥ Display series on Y1 / Y2 Axis
Associates the series with either the Y1 or Y2 axis (the axis must be active in
order to associate a series to it). The data range of the associated axis will
determine how the series is drawn.
Labels Tab
The contents of this tab are used to control how to label the Intensity Scatter
series and where to position the labels.
¥ Labels (on/off)
A switch titled ÒLabelsÓ at the top of the tab view panel will enable or
disable the series labels for the selected series.
¥ Label Content
The content of the data labels is set to:
Data - numeric labels
Text - textual labels
Text and Data - both textual and numeric values in the labels
The textual labels contain the row label text that is provided in the Data
View. The numeric labels display the values of the series elementÕs X, Y and
Intensity.
¥ Label Position
Label Positioning options are:
Center - In the center of the marker
Above - above the marker
Below - below the marker
Left - to the left center of the marker
Right - to the right center of the marker
Series labels can be double-clicked to deep-select them, then dragged freely
across the chart. When this is done, the label position is set to ÒCustomÓ.
¥ Label Color
The Label Color color well sets the display color of series labels.
¥ Label Rotation
The Rotation controls set the rotation of all of the series labels.
Trends Tab
The contents of the Trends tab is used to add trend lines to the selected
series. Any number of trends can
be added, each with their own set of attributes, but all associated with the
data of the selected series.
¥ Add Trend / Delete Trend
At the bottom of the trends tab are two
buttons used to add and delete trends.
Initially only the Add Trend button is enabled. When the Add Trend button is clicked, a
single trend is added. For each
added trend, an item is added to the popup button that is toward the top of the
Trends tab. This popup button
displays the trend label for each of the trends that have been added, and is
used to select a trend.
To delete a trend, select the trend from the list of trends in the popup button toward the top of the Trends tab, then click the Delete Trend button.
¥ Type
The mathematical model for a given trend
can be set using the Type popup button.
If the trend type has a modifier value, the control for that value is
displayed to the right of the trend type popup. For example, the Polynomial trend type has an Order
modifier, and the Moving Average trend type has a Period modifier.
¥ Active
The Active switch is used to activate and
deactivate a trend. When a trend
is deactivated, it is not displayed in the chart and is not referenced in the
chart legend.
¥ Show Entry in Legend
This switch is used to include or exclude
an entry that represents the trend from the chart legend.
¥ Draw in front of series
Allows you to set the trend to draw in front of
or in back of the associated seris.
¥ Label
The default label for a trend is
Ò<Series Name>(Trend #)Ó.
This label can be modified with the Label textfield. This label is used to identify the
trend in the chart legend, and is also used to identify the trend in the trends
popup toward the top of the Trends tab.
¥ Line Width and Color
Used to set the width and color of the
trend line.
¥ Equation Annotation
You can drag a textual annotation from this icon
well that will display the mathematical equation computed for the associated trend.
The ErrorBars tab is used to turn error bars off and on for a given series, and to change the error barsÕ attributes.
¥ Error Bars PopUp and Switch
The combination of the popup and switch are used to do two things:
activate/deactivate the error bars that are measured by the X or Y Axis, and to select the error
bars measured by a given axis so that the attributes of those error bars are loaded into the other
controls in this tab.
¥ Mode
A set of two radio buttons used to choose whether the
positive and negative error bars will be symmetrical - i.e. based on the same mathematical model -
or will have a different model for the positive error bars than the negative error bars.
¥ Type
If the Mode is symmetrical, meaning that both the negative and
positive error bars are based on the same mathematical model, then a single popup menu will be displayed
from which you may set the mathematical model. If the Mode is not symmetrical, you will see two
popup buttons used to select the model used to calculate the positive and negative error bars. The
options for the mathematical models, or type, are as follows:
|
Percentage Ð Extends error bars above and/or below series
element a distance that is a percentage of that series elementÕs value. The percentage is set using the
modifier field to the right of the popup. Std_Dev = sqrt( sum(D) / N-1 ), where D = square of a valueÕs difference from the mean, Sum(D) = sum of all D over the value set N = number of values.
Std_Dev
/ sqrt( N ), where Std_Dev and N are defined above. |
¥ Bar attributes
Sets the width and color attributes of the
error bars.
¥ Markers
By default Error Bars display no marker at the top and bottom of the bar.
However, a marker can be added, and three styles are available. The size of the marker can be set here too.