continuous variables into discrete variables

i have a data set having four attributes(4 columns),and all attributes are having continuous values, i want to convert them into discrete values. how can i do that? i am also attaching my data set here. please help me...

Thanks in advance..

[Star Strider]

First, they look like the classical Fisher iris flower dataset. It is used for classification demonstrations, and to test classifiers.

But if making the data discrete is your intent and you’re absolutely convinced that is what you need to do, consider the Bilinear Transform.