next up previous contents
Next: Setting Up a User Up: Colors in DsTool Previous: Color Modes and Viewing

Color Coding for Points

This section details how points are assigned colors  and symbols .
Colors for Trajectories:
Trajectories (and multiple trajectories) have both an alternating color and a pick color. The pick color can be chosen by the user using the Color window. The alternating color is automatically the next (non-system) color in the colormap. Each trajectory of a flow object is colored using the same alternating and pick colors. The default symbol (shown in the Defaults window) is always assigned.
Colors for fixed points:
The DsTool convention  for hyperbolic fixed points is: saddle points are marked as green crosses, sinks are blue triangles, and sources are red squares. In each case, the alternating color is negative, and the pick color and symbol code are the appropriate integers. Hyperbolic fixed points that are found by the Fixed Points window always follow the convention. Hyperbolic equilibrium points that are found by the Equilibrium Continuation window may or may not be colored according to the convention, depending upon the value of the Monitor Switch setting. In either setting, the equilibrium points are assigned dots, save those found by the ``Search'' operation, which are assigned triangles.
Colors for periodic orbits:
Periodic orbits are colored using the DsTool convention: attracting periodic orbits are colored blue, repelling periodic orbits are colored red, and saddle periodic orbits are colored green. Periodic orbits are always assigned dots.
Colors for bifurcation points:
Bifurcation points found by the Equilibrium Continuation window will be colored according to the colors in the Continuation Colors window. Saddle node bifurcation points are colored green. Hopf bifurcation points, degenerate Hopf points, and resonant saddle node points are colored using the last three colors in the colormap, which can be changed by the user. In the default colormap, the corresponding colors are magenta, orange, and sea green, respectively. Bifurcation points are always assigned dots, save those found by the ``Search'' operation, which are assigned triangles.
Colors for selected points:
Points which are saved from the Selected Point window are assigned the pick color designated by the Color window, negative alternating color, and the default symbol.

next up previous contents
Next: Setting Up a User Up: Colors in DsTool Previous: Color Modes and Viewing
John Lapeyre
1998-09-04