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, 14 insertions, 0 deletions

diff --git a/npdistortion.cpp b/npdistortion.cpp
new file mode 100644
index 0000000..71db85b
--- /dev/null
+++ b/npdistortion.cpp
@@ -0,0 +1,14 @@
+#include "npdistortion.h"
+
+#include "mp.h"
+
+NPDistortion::NPDistortion(const arma::mat &X, const arma::uvec &sampleIndices, int k)
+    : DistortionObserver(X, sampleIndices)
+    , m_k(k)
+{
+}
+
+arma::vec NPDistortion::measureFunc(const arma::mat &distA, const arma::mat &distB)
+{
+    return mp::neighborhoodPreservation(distA, distB, m_k);
+}