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19.3.5 The units section
The units section can be used to define new physical units for use within Pyxplot’s mathematical environment. Each line should take the format of
<l_sing> \[ / <s_sing> \] \[ / <lt_sing> \] \[ / <l_plur> \] \[ / <s_plur> \] \[ / <lt_plur> \] : <quantity_name> = \[ <definition> \]
where
l_sing |
is the long singular name of the unit, e.g. metre. |
s_sing |
is the short singular name of the unit, e.g. m. |
lt_sing |
is the singular name of the unit to be used in latex. |
l_plur |
is the long plural name of the unit, e.g. metres. |
s_plur |
is the short plural name of the unit, e.g. m. |
lt_plur |
is the plural name of the unit to be used in latex. |
quantity_name |
is the physical quantity which the unit measures, e.g. length. |
definition |
is a definition of the unit in terms of other units which Pyxplot already recognises, e.g. 0.001*km. The syntax used is identical to that used in the unit() function. |
For example, a definition of the metre would look like
metre/m/m/metres/m/m:length=0.001*km
Not all of the various names which a unit may have need to be specified. If plural names are not specified then they are assumed to be the same as the singular names. If short and/or latex names are not specified they are assumed to be the same as the long name. If the definition is left blank then the unit is assumed to be a new base unit which is not related to any pre-existing units.
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