2D Diagram Dialog Box

The 2D Diagram dialog box appears when you select 2D Diagram in the Porcupine Curvature Analysis and Distance Analysis dialog boxes.

This page discusses:

Distance Analysis

  • Inverse Y axis values: Draws the curves in a linear horizontal scale and and inverse vertical scale.
  • Reframe the diagram: Reframes the diagram.
  • Options: Displays Diagram Options dialog box.
Important: Depending on the chosen option, values displayed in the diagram are updated.

Porcupine Curvature Analysis

  • All curves with the same vertical length: Displays all curves according to the same vertical length, regardless of the scale.
  • All curves with the same origin: Displays all curves according to a common origin point on the Amplitude scale.
  • Use a logarithmic scale on vertical axis: Displays all curves according to a logarithm scale for the Amplitude, and a linear scale for the Curve parameter.
  • Display percentage instead of length for horizontal axis: Displays the abscissa as percentage of the amplitude of X parameters (parametric mode) or the length of the 3D curve (curvilinear mode).
  • Reframe the diagram: Reframes the diagram.
  • Display a dialog box with more options: Displays Diagram Options dialog box.
Important: Depending on the chosen option, values displayed in the diagram are updated.

Grid Customization

The number of lines displayed on grid during zoom depends on the following options:

  • Automatic scale factor: Defines the space between two coordinate lines when there are not enough lines in the viewer.
  • Maximum lines number: Defines the maximum number of lines displayed in the viewer without zooming.
  • Primary spacing on X: Defines the distance between the coordinates of the X-axis.
  • Primary spacing on Y: Defines the distance between the coordinates of the Y-axis.

Display Options

The display in the 2D Diagram can be configured:

  • 2D cursor: displays the 2D cursor.
  • Caption: displays the caption area.
  • Grid: displays the grid.

Zoom Mode

There are two ways to zoom in the viewer window.

  • By using the mouse you can navigate in the viewer graph by panning (translation) and zooming in it.
  • You can define a frame in the area where to zoom in. The graphical area is selected by using trap selection with the mouse. For zoom by trap two types of stretching are available:
    • Standard: There is no stretching. The area is zoomed in the window and the X-axis and Y-axis intervals depend on the values defined in Primary spacing on X and Primary spacing on Y.
    • Automatic: The horizontal X-axis interval corresponds to the interval resulting from zoom. The vertical Y-axis interval corresponds to the extrema computed from the Xmin and Xmax of the X-axis interval.