mvpa2.datasets.base.HollowSamples¶
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class
mvpa2.datasets.base.
HollowSamples
(shape=None, sid=None, fid=None, dtype=<type 'float'>)¶ Samples container that doesn’t store samples.
The purpose of this class is to provide an object that can be used as
samples
in a Dataset, without having actual samples. Instead of storing multiple samples it only maintains a IDs for samples and features it pretends to contain.Using this class in a dataset in conjuction will actual attributes, will yield a lightweight dataset that is compatible with the majority of all mappers and can be used to ‘simulate’ processing by mappers. The class offers acces to the sample and feature IDs via its
sid
andfid
members.Methods
copy
([deep])view
()Return itself Parameters: shape : 2-tuple or None
Shape of the pretend-sample array (nsamples x nfeatures). Can be left out if both
sid
andfid
are provided.sid : 1d-array or None
Vector of sample IDs. Can be left out if
shape
is provided.fid : 1d-array or None
Vector of feature IDs. Can be left out if
shape
is provided.dtype : type or str
Pretend-datatype of the non-existing samples.
Methods
copy
([deep])view
()Return itself -
copy
(deep=True)¶
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samples
¶
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shape
¶
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view
()¶ Return itself
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