don't allow mathematical transformations on string data

vjdorazio / TwoRavens

A web application for data exploration, statistical analysis, model construction and meta analysis tools, that integrates with Zelig and Dataverse.

http://datascience.iq.harvard.edu/tworavens

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don't allow mathematical transformations on string data #8

Open raprasad opened 7 years ago

raprasad commented 7 years ago

Currently users can select a variable such as country and attempt to apply a transformation such as d^2
Provide better error messaging via the client or rook
Currently provides message below:

error message from rook:

tercer commented 7 years ago

Good point. We should make better use of the type defintions of variables from the metadata, when we trust them, and check whether transformations are meaningful against those types.

Privacy Tools is doing something more sophisticated in this regard for it's own version of transformations. It's implemented in Haskell. Probably more (and clumsier) than we need, but perhaps as we integrate that code in for the Privacy case, we can learn what works and implement something better here.