Workspace Node: Graphs - Options 2 Tab

In a graph workspace node, select the Options 2 tab to access options to set up the graph layout and make choices relevant to the fitted function. Additional options are available to use random subsampling of cases in computing the graph and to monitor (or not to monitor) the progress of graph creation via a progress bar. Note, however, that some of these options are not applicable to all graph types. For example, 3D plots cannot use polar coordinates (see below).

Element Name Description
Graph layout The options in this group box are used to select the desired coordinate system and the axes positions in displaying the graph. These options are disabled for Variability plots.
Coordinate system Select a coordinate system to use with 2D graphs. Select Standard (Cartesian) to use standard X vs. Y (Cartesian) coordinates. Select Polar to convert the X-Y data to polar coordinates based on r and θ (theta). In the polar coordinate system, r represents the distance from the polar axis (center of the circle) along a straight line and θ represents the angle of the straight line measured in radians. Polar plots are automatically scaled from 0 to 2π (pi) radians and are circular in appearance, with the X variable plotted around the circumference and the Y variable plotted radially. Polar coordinates are not an available option for 3D and some other graph types.
X-Y Axis position Specify the position of X and Y variables on the x- and y-axes of the graph. When Standard is selected, the values for the selected X variable will be displayed along the (horizontal) x-axis in the 2D plot, and the values for the selected Y variable will be displayed along the y-axis (i.e., the vertical axis in 2D plots). Select Reversed to display the values for the selected X variable along the y-axis, and the values for the selected Y variable along the x-axis. This option is not applicable to 3D plots.
Fitted function The options in this group box are used to control important characteristics of the fitted 2D function such as display of the fitted function expression, the degree of the polynomial for a polynomial fit, and the logarithmic base to be used in fitting logarithmic 2D functions. These options are disabled for Variability plots.
Display fit expression These options control the display of the fitted function(s)/equation(s) expressions in the graph. Select In title from the drop-box to display the fit expressions in the title area of the graph. Select As custom text to display the fit expressions as a movable legend in the graph. This will force the text of the fit expressions into the custom (movable) text format, even if the number of functions/equations is less than 5 and they would fit in the fixed title area of the graph. This option is useful when you intend to extensively edit or integrate the text of functions/equations with other text or when the lengths of the functions/equations exceed the capacity of the fixed title area. Note that if there are more fit expressions than can be accommodated in the fixed title area of the graph, they will be displayed as custom text. This option can be set globally on the Analyses/Graphs: Display tab of the Options dialog box.
Polynomial Order Select the polynomial order for the polynomial fit, if one is chosen for the current graph. You can choose Quadratic (2nd order), Cubic (3rd order), Quartic (4th order), or Quintic (5th order). The selected order can be changed after the graph is created.
Logarithm base Select either the natural log (base e) (select Euler) or base 10 (select 10) for the fitted logarithmic function in the graph; the setting of this option will not affect the computations if the chosen fit is not Logarithmic.
Display Progress Bar Either enable or disable the progress bar on the status bar during graph creation. You can choose to display the progress bar each time a graph is created (select Enable) or to turn off the display of the progress bar (select Disable).
Sampling Use the options in this group box to create a graph based on a sub-sample of observations in the current data file.
Enable Select this check box to enable random subsampling of cases (observations).
Approximate number of cases Select this option button, and in the corresponding edit field, enter the approximate number of cases to be used when creating the subset.
Approximate percent of cases Select this option button, and in the corresponding edit field, enter the approximate percentage of cases to be used when creating the subset.