Global Variables?

[jte]

(04-03-2017 02:10 AM)Joe Horn Wrote:  ⋮
A hopefully-complete list of Prime's reserved variables can be found HERE.

A nice & useful list!

I did notice that descriptions are missing for a bunch of the Graph 3D app variables.

Descriptions for those whose GUI resides on page 3 of Graph 3D's Plot Setup view (BoxSides, BoxFrame, BoxAxes, BoxLines, BoxDots, and BoxScale) can be brought up by pressing Help after selecting one of them (BoxSides, say) from the Vars / App / Graph 3D / Plot choices. The "Box..." settings have to do with a virtual "box" that surrounds the plotted functions. Some of these may be understood quickly by interacting with a Graph 3D plot view with only one enabled at a time (going to page 3 of Graph 3D's Plot setup view, setting all but one to "None" / unchecked).

Similarly for those whose GUI resides on page 2 of Graph 3D's Plot Setup view (GridX, GridY, Surface, and KeyAxes). The KeyAxes is the little RGB XYZ axes display resident (when enabled) in the top left of Graph3D's Plot view.

... and, again, similarly for those whose GUI resides on page 4 of Graph 3D's Plot Setup view (BoxScale, PoseXaxis, PoseYaxis, PoseZaxis, and PoseTurn). The Pose... variables have to do with the orientation of the plot (transformation from the abstract XYZ space of the function surface plot to the XY coordinates of the screen). The user-facing description is intended to be a rotation around a vector (a turn of PoseTurn around the vector [PoseXaxis, PoseYaxis, PoseZaxis] if the XY plane of the abstract XYZ coordinates is aligned with the XY screen plane of the calculator).

Zmin, Zmax, and Ztick are direct analogues of Xmin, Xmax, and Xtick. (Or Ymin, Ymax, and Ytick.) Zmin and Zmax control the volume being plotted (which interval of Z the plot is for) while Ztick controls plot decorations (dots and lines).

Zzoom is similar to Xzoom and Yzoom: Zzoom controls the amount of zooming done along the Z dimension when a zoom is done in a Graph 3D Plot view.

(I started typing in descriptions of them just now, before realizing that there should be some online Help for them.)

FZ0-FZ9 are direct analogues of F0-F9 (from Function): these are the symbolic definitions of the functions considered for plotting. (Plotted if checked.)

(Z0-Z9 are not used in Graph 3D as they were already reserved for complex variables.)

I also noticed PPL variables are missing for some of the controls present in Graph 3D's Plot Setup view and that some of the Help has formatting issues. Some of the variables in Graph 3D could be better understood / communicated with a diagram or two.