chmRegisterTypeMapper {NGCHM} | R Documentation |
Register a predefined Javascript function for converting values from one type to another.
Description
This function registers a Javascript function that will be automatically added to a Next Generation Clustered Heat Map as required for converting values from one type into another more basic type. This function is intended for use by NGCHM system developers.
Usage
chmRegisterTypeMapper(fromtype, totype, op, ...)
Arguments
fromtype |
The type of values the function expects as input. |
totype |
The type of values the function will produce. The length of totype must be shorter than fromtype. |
op |
The operation code for performing the conversion |
... |
Additional parameters required for specifying the conversion (op specific) |
Value
NULL
op can have the following values:
'field' Split source into fields separated by 'separator' and select field 'num' (0 origin)
'expr' Compute string expression 'expr'. 'return' value is a vector or a scalar (default)
'javascript' Evaluate javascript function 'fn' (deprecated)