Description
The common way of reading an R dataset consists on two steps:
* First, the file is parsed using the function parse_file. This provides
a literal description of the file contents as a hierarchy of Python
objects representing the basic R objects. This step is unambiguous
and always the same.
* Then, each object must be converted to an appropriate Python
object. In this step there are several choices on which Python type
is the most appropriate as the conversion for a given R object. Thus,
we provide a default convert routine, which tries to select Python
objects that preserve most information of the original R object. For
custom R classes, it is also possible to specify conversion routines
to Python objects.
The basic convert routine only constructs a SimpleConverter objects and calls its convert method. All arguments of convert are directly passed to the SimpleConverter initialization method.
It is possible, although not trivial, to make a custom Converter object to change the way in which the basic R objects are transformed to Python objects. However, a more common situation is that one does not want to change how basic R objects are converted, but instead wants to provide conversions for specific R classes. This can be done by passing a dictionary to the SimpleConverter initialization method, containing as keys the names of R classes and as values, callables that convert a R object of that class to a Python object. By default, the dictionary used is DEFAULT_CLASS_MAP, which can convert commonly used R classes such as data.frame and factor.
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Homepage
https://github.com/vnmabus/rdata
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