Function to create a condition for ParameterSet dependencies
for use in the $deps public method.
cnd(type, value = NULL, id = NULL, error = NULL)(character(1))
The condition type determines the type of dependency to create, options
are given in details.
(ANY)
If id is NULL then value should be a value in the support of the
parameter that the condition is testing, that will be passed to the condition
determined by type. Can be left NULL if testing if increasing/decreasing.
(character(1))
If value is NULL then id should be the same as the id that the
condition is testing, and the condition then takes the currently set value
of the id in its argument. Can be left NULL if testing if increasing/decreasing.
(character(1))
Optional error message to be displayed on fail.
This function should never be used outside of creating a condition for
a dependency in a ParameterSet. Currently the following conditions are
supported based on the type argument, we refer to the parameter depended on
as in the independent parameter, and the other as the dependent:
"eq" - If value is not NULL then checks if the independent parameter
equals value, otherwise checks if the independent and dependent parameter
are equal.
"neq" - If value is not NULL then checks if the independent parameter
does not equal value, otherwise checks if the independent and dependent
parameter are not equal.
"gt"/"lt" - If value is not NULL then checks if the independent
parameter is greater/less than value, otherwise checks if the independent
parameter is greater/less than the dependent parameter.
"geq"/"leq" - If value is not NULL then checks if the independent
parameter is greater/less than or equal to value, otherwise checks if the
independent parameter is greater/less than or equal to the dependent
parameter.
"any" - If value is not NULL then checks if the independent parameter
equals any of value, otherwise checks if the independent parameter equals
any of dependent parameter.
"nany" - If value is not NULL then checks if the independent
parameter does not equal any of value, otherwise checks if the independent
parameter does not equal any of dependent parameter.
"len" - If value is not NULL then checks if the length of the
independent parameter equals value, otherwise checks if the independent
and dependent parameter are the same length.
"inc" - Checks if the parameter is increasing.
"sinc" - Checks if the parameter is strictly increasing.
"dec" - Checks if the parameter is decreasing.
"sdec" - Checks if the parameter is strictly decreasing.