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The first step

Now let's create our first dataset object. Simple type the following at the command prompt

>>> ds = Dataset([[1,1,1],[2,2,2],[3,3,3]])

You now have an instance of a Dataset in the variable ds. To check this, just type ds at the command prompt. You should see the following printed out

>>> ds
Dataset: None, 3 by 3

This tells you that the variable ds is an instance of class Dataset, it has no name (name is equal to None) and the size of the dataset is 3 rows by 3 columns. To view the data in the dataset, we use the getData() method. Try it now

>>> ds.getData()
[[ 1., 1., 1.,]
 [ 2., 2., 2.,]
 [ 3., 3., 3.,]]

As you can see, this is the same data which we entered when constructing the object.



Lucas Scharenbroich 2003-08-27