THIS 22.1

X-AXIS

X-AXIS

AXIS LABELS

The x-axis label may be set automatically or a user defined label can be specified.. When the Automatic option is selected the text box will display <automatic> and the axis label will be set to the x axis label of the first curve that is currently being plotted. The axis label may be turned on and off by toggling the Display Label button.

In addition to displaying the axis labels an optional unit label can also be appended to the axis label. If the option to add a unit label is set to Automatic then the unit label displayed will depend on the current curves that are visible and the current unit system being used to display results (see UNITS for more information on Unit Systems). If the curves being displayed do not have the same axis unit then no unit label will be displayed. The unit label may be turned on and off by toggling the Add Units button.

AXIS LIMITS

The minimum and maximum x axis values can be controlled using a combination of the text box and the popup menu opposite.

Autoscale

The axis values will be set to the maximum and minimum values of all the curves that are currently being plotted.

Locked

The axis limit is set to the user defined value specified in the text box. If the curves are translated of scaled dynamically the limit will be reset.

Note : The global command AUTOSCALE (see Autoscale ) will reset the minimum and maximum values to AUTO .

AXIS TYPE

The x-axis can be switched between a Linear or Logarithmic scale. If a logarithmic scale is selected, a warning will be generated if an attempt is made to plot points that have -ve or zero X values and the points will be skipped.

GRID SPACING

By default T/HIS will automatically set the grid line intervals for the x-axis when the grid is tuned on ( see GRID ). If the GRID option is changed from Automatic to Manual a grid Interval and Offset my be specified. If the Interval is set to 0.1 and the Offset to 0.02 then grid lines will be produced at 0.02, 0.12, 0.22 ....

UNITS

Axis values can be displayed using 3 different formats:




Automatic

Values are displayed using exponential format, all values are displayed as values of E0, E3, E6 etc.

e.g 11.234E+03




Scientific

Values are displayed using exponential format.

e.g 1.123E+04

General

Values are displayed as real numbers.

e.g 11234.000

In addition to specifying the format, the number of decimal places can also be set between 0 and 9 and the colour and font used to display the values can be set.



Save Preferences to File

Launches a popup to quickly save preferences to the oa_pref file. See Save Preferences Popup.

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