#### Target Individual Chart

This chart type requires the selection of Features. If the Feature Variable list is displayed in the side bar, this chart icon will be grayed out. Access the Feature list in the side bar, and apply some features to the tabbed window to display this chart type.

The Target Individual Chart displays the positions of variables for a single feature, or the average positions of variables in a subgroup. The center of the plot represents the nominal position of each point. The upper tolerance for each variable is used to draw the radius of the inner circle (or ellipse or rectangle, depending upon your tolerancing configuration), which is equal to the value of the tolerance. Out of tolerance is determined by whether or not the points lie outside of the first (innermost) circle, ellipse, or rectangle.

This type of chart is used in both the Chart tab and CAD tab.

You can select to show up to six specification limits, which are drawn as additional circles, ellipses, or rectangles outside the innermost one. The radius of each outer circle, ellipse or rectangle is incremented by one tolerance value. The deviations of the measured values are then plotted and labeled with letters, and the centroid of the measured points is calculated and shown as the intersection point of two dashed lines. This layout allows you to compare the plotted points to the nominal and tolerances.

Sample Chart

Data Requirements:

In order to successfully create a Target Plot, the required data for the type of tolerancing you have selected must exist in the database:

- For True Position Tolerancing, three variables must exist in the database: two dimensional variables with associated data, and one true position variable named with a .T extension. The .T variable does not require associated data; it just has to exist as a variable record that defines an upper tolerance.

- Elliptical and Rectangular Tolerancing require that two dimensional variables with data exist in the database. Instead of using the true position variable with the .T extension, these two types of tolerancing use the upper tolerances of the two dimensional variables to create the plot.

See also:

Important: True Position Tolerancing is the default tolerance for the first Target Plot you create. See "Chart Display - Target Plot" for information on changing the tolerancing. If you are creating your first Target Plot and the T. variable required for True Position Tolerancing does not exist in the database, you can just create a plot anyway (it will display “No Valid Data”), and set your configuration later, or you can use the Data Editor tab to create or rename the .T variable, and then create the plot. See "Data Editor Tab".