MTDATA – Phase Diagram Software from the National Physical Laboratory

 

 

 

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ABSCISSA

Function:

This command allows the user to select the range of compositions to be plotted on the x-axis of the graph produced using PLOT. Compositions are expressed in terms of the mole fraction of the second component. The range of compositions to be plotted can be specified using the LIMITS parameter. Alternatively, the DEFAULT parameter can be used to reset the range of compositions to the default setting (min. value = 0, max. value = 1 ).

Parameters:

default

limits

w_(weight fraction)

Defaults:

default      (mole fraction)

limits = 0 1

Examples:

abscissa limits 0.3 0.7 !

abscissa default !

abscissa w yes !

Parameter values:


DEFAULT

This resets the maximum and minimum values of composition to be plotted to their default values of 0 and 1 . 

LIMITS

takes the values <min> <max>

This parameter enables the user to specify the range of compositions to be plotted on the x-axis of the graph. Minimum and maximum values of the composition (expressed in terms of mole fraction of the second  component) must be entered.

W_(WEIGHT_FRACTION)

takes the values YES/ NO

This parameter allows the user to select whether the x-axis of the graph produced using PLOT ! is to be calibrated in mole fraction (the default setting) or weight fraction. It takes values YES or NO (YES for weight fraction, NO for mole fraction).

General comments:

None

 

Updated 30 June 2010