PRESENT OPTIONS GRAPH Subject [Control]

                          

The PRESENT OPTIONS GRAPH command provides the user with additional controls over the graphs displayed by the PRESENT GRAPH command.

Subject Control Comments

AXES AUTOMATIC Sets the graph axes to be automatically scaled to fit the data.

XMIN value Sets the minimum limit to the X-axis (see note 3).

XMAX value Sets the maximum limit to the X-axis (see note 3).

YMIN value Sets the minimum limit to the Y-axis (see note 3).

YMAX value Sets the maximum limit to the Y-axis (see note 3).

`integer' Allows limits to be set for a specific axis (see note 4).

XLINEAR Sets the X-axis to have a linear scale.

XLOG Sets the X-axis to have a logarithmic scale (except for BEAM graphs).

YLINEAR Sets the Y-axis to have a linear scale.

YLOG Sets the Y-axis to have a logarithmic scale (except for BEAM graphs).

SINGLE Specifies that a single axis is to be used for multiple attribute graphs.

MULTIPLE Specifies that multiple axes are to be used for multiple attribute graphs.

DEFAULT Specifies that the number of axes for multiple attribute graphs is to be set by default (see note 1).

SWAP Swaps the X and Y axes.

MATERIALS [OFF] Switches the material labels on or off.

SURFACE [OFF] Switches the surface labels on or off.

POINTS LABELS [OFF] Switches the point labels on or off.

SYMBOLS [OFF] Switches the point symbols on or off.

LINES [OFF] Sets the graph lines to be off.

[THIN] Sets the graph lines to be thin.

[NORMAL] Sets the graph lines to be of normal thickness.

[THICK] Sets the graph lines to be thick.

GRID DEFAULT Sets the graph grid to be drawn according to defaults (see note 1).

OFF Sets the graph grid to be off.

BROKEN Sets the graph grid to be drawn with broken (dashed) lines.

FULL Sets the graph grid to be drawn with full (solid) lines.

RESIZE FRAME Sets the graph to be drawn centred over most of the screen.

/CURSOR Defines a rectangle on the screen within which the graph is to be drawn.

FEEDBACK /CURSOR Displays the values of up to 20 points on a graph until a new graph is

OFF drawn or until the values are switched OFF.

Notes:

1.

Default conditions
The default condition is that all of the graph axes will be scaled automatically with linear scales, and that point symbols and normal thickness graph lines will be drawn, but with no labels displayed. For multiple attribute graphs, by default single graph axes will used if different components of the same attribute are being graphed, but multiple axes will be used if different attributes are being graphed. By default the graph grid will be drawn with broken lines on single axis graphs but will not be drawn on multiple axes graphs. All of these conditions are reset whenever a model is accessed from the database.

2.

Axis limits
Any value given for an axis limit will be altered slightly if the range of the axis is extended during the calculation of conveniently sized annotation intervals.

3.

Specifying more than one axis limit in the same command
Two, three or all four axis limits may be specified as part of the same command as follows: PRESENT OPTIONS GRAPH AXES XMIN v1 XMAX v2 YMIN v3 YMAX v4.

4.

Specifying axis limits with multiple axes
For graphs with multiple axes, any axes limits specified will apply to all of the axes unless an integer representing one of the axes is entered first. The axes are numbered from 1 on the outside to up to 6 on the inside.

5.

Changing axis limits using EYE commands
It is possible to zoom in on or out from a graph using the commands EYE ZOOM IN, EYE ZOOM OUT and EYE ZOOM FACTOR. The section of graph displayed may also be changed with the EYE SHIFT command. These commands effectively change the limits to the graph axes, which can be reset with the command EYE FRAME, or with the command PRESENT OPTIONS GRAPH AXES AUTO, which has exactly the same effect.

Examples:

1.

PRESENT OPTIONS GRAPH AXES XMIN 0.0 YMIN 1.0E3

The axes of the graph will be scaled so that the X-axis has 0.0 as its lower limit and the Y-axis has 1.0E3.

2.

PRESENT OPTIONS GRAPH AXES 2 YMIN 1.0E5 YMAX 9.0E5

For multiple Y-axes, the second Y-axis will be scaled to start at 1.0E5 and end at 9.0E5.

3.

PRESENT OPTIONS GRAPH AXES YLOG

The Y-axis will have a logarithmic scale.

4.

PRESENT OPTIONS GRAPH AXES SINGLE

Single axes will be used for multiple attribute graphs.

5.

PRESENT OPTIONS GRAPH POINTS SYMBOLS OFF

Graph point symbols will be switched off.

6.

PRESENT OPTIONS GRAPH GRID OFF

The graph paper grid will not be drawn.

7.

PRESENT OPTIONS GRAPH FEEDBACK /CURSOR

The X and Y values closest to the cursor hit will be displayed.

See also the following commands

'PRESENT GRAPH'