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graph3
Format: graph3( data, x, y, style,
title, xlabel, ylabel, zlabel )
Arguments: [real] data Matrix of z-data points
[real] x Optional list of x-values;
default = 1..nx
[real] y Optional list of y-values;
default = 1..ny
(int) style Optional style declaration;
default = G3_DEFSTYLE
(text) title Optional graph title; default = null
(text) xlabel Optional x-axis label;
default = null
(text) ylabel Optional y-axis label;
default = null
(text) zlabel Optional z-axis label;
default = null
Returns: null
Description: Produces a 3-D, graph of data points. The
data to be graphed must be composed as a matrix, or list of
lists; e.g., [[1,2],[3,4]]. The
elements in the matrix must be evenly spaced in both the x- and
y-direction. The x- and y-value lists are used only to determine
the upper- and lower-limit on each axis.
Once the graph has been displayed, you can rotate the image
interactively using the arrow keys. These keys rotate the image
in 15-degree increments. Pressing SHIFT in combination with the
arrow keys causes the image to rotate in smaller, 5-degree
increments. CTRL+Up/Down zooms in/out of the image.
CTRL+Left/Right pans the image.
The style arguments for the table,
graph, and graph3
primitives are all constructed by adding together a series of
pre-defined constants. These constants turn particular attributes
on or off. For example, the default graph3 style,
G3_DEFSTYLE, is defined as GS_CONTOURFILL + GS_LEGEND + GS_MESH +
GS_BOX + GS_GRID + GS_AXES + GS_COLOR. Each of these style
constants and all others that can be used are described in the
following table:
Graph Styles:
GS_MESH Display a grid on the plotted surface corresponding to
the mesh of sample points.
GS_BOX Draw a bounding box around the graph.
GS_AXES Draw x-, y-, and z-axes.
GS_GRID Draw a grid on the x/y plane.
GS_CONTOUR Produce a flat contour graph without perspective
and 3-D effects.
GS_CONTOURFILL Shade the surface plot using colors or gray
levels to represent different levels in the z-direction.
GS_CONTOURLINES Draw contour lines at the border between
discrete levels in the z-direction.
GS_LEGEND Draw a legend relating the contour fill colors to
levels in the z-direction.
GS_ASPECT Use the same scale factor to adjust the x-, y- and
z-axes. Normally, axes are scaled to fit the window or page on
which the graph is drawn. Selecting this style forces one unit in
the x-direction to be exactly the same physical length as one
unit in the y- and z-directions.
GS_COLOR Use color to distinguish different contour levels.
Normally, gray levels are used.
GS_AUTO Automatically reconstruct the graph if any nodes in
the system change. Without this option you can explicitly update
a graph by clicking the Recalculate button.
Examples: x:=[1,2]
y:=[1,2]
z:=[[1,2],[3,4]]
graph3(z,x,y,G3_DEFSTYLE,"Title","x","y","z")
graph3(z,x,y,G3_DEFSTYLE+GS_CONTOUR,"Title","x","y","z")
See Also: graph, table
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