graph creation menu

This menu is for creating graphs that show statistical information about the objects in your image. You can interact with these graphs and highlight selected groups of objects, displaying their outlines on the screen. You can also select objects from the screen display and see where they appear in the graphs you create. There are two kinds of graphs:

Constraint Graphs, through which you can apply a constraint to your set of objects. This, in effect, "throws away" a portion of the objects, letting you work within a restricted set.
Highlight Graphs, which let you display objects in different colors. When you create a highlight graph, all objects that have been constrained away are ignored.

When you want to create a graph, first specify which kind you want by clicking on the Graph type menu field. Next, click on the Format field and specify whether you want a Histogram or a Scatter Plot. Enter the geometrical parameter that you want to graph in the Axis 1 menu field. If you are creating a Scatter Plot, enter the second parameter in the Axis 2 menu field. If you are creating a Histogram you can:

enter the number of bars you want the histogram to have in the Divisions menu field,
make it a cumulative histogram by setting the Cumulative? toggle to Yes.
select which parameter you want for the y-axis of your graph by entering it in the Y-axis menu field,
select a logarithmic or linear y-axis with the Y-axis logarithmic? toggle.

Select the units you wish to use in the X-axis units menu field. You can determine the size of the graph on the screen by entering its width in the Graph width menu field. Finally, click on the CREATE THE GRAPH menu field, and the graph will appear. You can then go to the Highlight Objects menu to interact with the graph.

You can perform a Principal Components Analysis on the measured geometric parameters of your objects, and produce graphs of the principal components instead of the geometric parameters. To do this, click on the Do PCA menu field, then indicate which parameters you want to include in the analysis. When you are satisfied with your parameter selection, click on the Exit button on the parameter menu. The system will then perform the analysis and display the eigenvectors and variances. You can then create graphs using the principal components by selecting PC Highlight or PC Constraint for the Graph type menu field.

You can control whether the measurements used in the analysis are standardized with the Standardize? toggle.