Color mapping in Scatterplot and initial measures.

- Scatterplot: can now map any floating point data to colors;
- Scatterplot: somewhat optimized geometry/material updates;
- Removed anything related to labels where it was not necessary;
- Added observers to implement distortion (via measures) visualization;
- Added skeleton implementations of NP and silhouette.

1 files changed, 2 insertions, 2 deletions

diff --git a/dist.cpp b/dist.cpp
index aaa2167..a5620ad 100644
--- a/dist.cpp
+++ b/dist.cpp
@@ -5,14 +5,14 @@ double mp::euclidean(const arma::rowvec &x1, const arma::rowvec &x2)
     return arma::norm(x1 - x2, 2);
 }
 
-arma::mat mp::dist(const arma::mat &X, double (*distCalc)(const arma::rowvec &, const arma::rowvec &))
+arma::mat mp::dist(const arma::mat &X, mp::DistFunc dfunc)
 {
     arma::uword n = X.n_rows;
     arma::mat D(n, n, arma::fill::zeros);
 
     for (arma::uword i = 0; i < n; i++)
         for (arma::uword j = 0; j < i; j++) {
-            D(i, j) = distCalc(X.row(i), X.row(j));
+            D(i, j) = dfunc(X.row(i), X.row(j));
             D(j, i) = D(i, j);
         }