<p>In <a href="https://github.com/mlpack/mlpack/pull/742#discussion_r73025667">src/mlpack/methods/preprocess/preprocess_describe_main.cpp</a>:</p>
<pre style='color:#555'>> + double rowMean = arma::mean(row);
> + double rowStd = arma::stddev(row, population);
> +
> + // Print statistics of the given dimension.
> + Log::Info << boost::format(numberFormat)
> + % dimension
> + % arma::var(row, population)
> + % rowMean
> + % rowStd
> + % arma::median(row)
> + % rowMin
> + % rowMax
> + % (rowMax - rowMin) // range
> + % Skewness(row, rowStd, rowMean, population)
> + % Kurtosis(row, rowStd, rowMean, population)
> + % StandardError(row, rowStd) << endl;
</pre>
<p>Everywhere else in the mlpack code we use just regular iostreams instead of boost::format... is it possible to use iostreams and iomanips here? Like <code>std::setw</code>, etc.</p>
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