[mlpack-git] [mlpack] Create a function to visualize the features learned by sparse autoencoder (#465)

Ryan Curtin notifications at github.com
Tue Oct 27 09:09:15 EDT 2015

It's an Armadillo versioning issue with this line:

double const max = arma::abs(input.row(k)).max();

Try `arma::max(arma::abs(input.row(k)))`.  I'm not sure in what version the `.max()` function was added to arbitrary expressions, but either way both of those expressions should compile to the same thing, and the `arma::max()` version should compile on older Armadillo versions.  (I'll be bumping the minimum Armadillo required version to 4.200 or so soon, I just haven't gotten around to it yet.)

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