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Chart configuration toolbar options

The toolbar of the Chart Configuration panel defines chart options that apply to all series in a chart.

It has the following options:

Range modifier
Use the slider to limit the range of values for the chart. The upper slider defines the upper limit and the lower slider adjusts the floor. As you move these two sliders, the chart re-scales based on the newly defined range.
Chart Type
Use the Type buttons on the left side of the toolbar to choose between one of the following chart types:
Filled
In a filled chart, each series is displayed as an area filled with the color specified in the chart configuration.

Figure 6-33 A filled chart example

A filled chart example

Line
In a line chart, each series is displayed as a colored line.

Figure 6-34 A line chart example

A line chart example

Bar
In a bar chart, each series is displayed as a colored bar. Each bar in the chart represents a time bin.

Figure 6-35 A bar chart example

A bar chart example

Y-axis modifier
Use the drop-down menu to select one of the following options:
Stacked
In a stacked style chart, filled line charts are stacked on top of each other. The Timeline view stacks a filled line graph representing the series at the top of the chart control on top of the series that appear beneath it. So, the highest point of the graphs in a stacked chart is an aggregate of data from all of the series contained in the chart control. For example, if the first value of series A is three and the first value of series B is five, the first data point in the stack chart that contains these series is eight.

Figure 6-36 A stacked chart example

A stacked chart example

Stacked charts are appropriate when the events are counted in exactly one of the series in a chart. For example, this is useful in a case where a chart contains both Data Read Hits and Data Read Misses.
Overlay
An overlay chart contains a line for each series defined in the chart control. Series higher in the chart control appear behind series that are lower. For example, in the following screenshot, series A is above series B in the chart control. So, as series A has a value of three and series B has a value of five, the value from series A is obstructed from view by the larger value from series B. For this reason, it is important to place higher value series higher in the chart control when using an overlay chart. Drag and drop series controls to reorder them.

Figure 6-37 Data from series A obstructed by data from series B

Data from series A obstructed by data from series B

Overlay charts are appropriate when some of the events are counted in more than one series in the same chart. Data Read Requests and Data Read Hits are a good example of this.
Logarithmic
Shows all data points on a log10(y) scale where y is each Y-axis data point in the chart. This Y-axis modifier is useful when there is a huge difference between the minimum and maximum values in a chart. In charts with these huge deltas, it can be hard to differentiate between the lower value data points in the chart. Setting the Y-axis modifier to Logarithmic can give you a better visual representation of your data in these cases. A logarithmic chart displays with a series of horizontal lines in Streamline, each line represents an increase in value by a power of ten, so that if data point A sits exactly one line higher than data point B, A is ten times higher than B.

Note

If the actual value of a data point in a Streamline logarithmic chart is less than one, it appears in the Streamline chart like a zero value. This is because the logarithmic value of such a data point would be a negative number.

Figure 6-38 Logarithmic scale

Logarithmic scale

Title
Use this field to give the chart a title. The title appears at the top of the handle for the chart in the Timeline view.
Average Selection
When you have this option checked, any selection you make using the Cross Section Marker shows the average value of all bins included in the selection. If unchecked, the overlay is a total value of all bins.
Average Cores
When you have this option checked, values in a multi-core chart are the average of the individual cores, unless you have used the multi-core disclosure control to show metrics per core. If unchecked, the multi-core chart shows the totals for all cores.
Percentage
In a percentage style chart, values are plotted as percentages between 0 and 100.
Save as Snippet
Saves the current chart as a Snippet. After it has been saved, you can use the Snippet menu, located in the bottom left of the Timeline view to add this chart as it is currently configured.
Remove Chart
Removes the current chart from the Timeline view. If you have saved the chart as a Snippet, you can add it back to the Timeline view later using the Snippet menu.
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