ProjectionObsever now responds to selection changes.

* Scatterplot: small fix to selection updates
* ProjectionObserver: whenever CP selection changes, compute
  influence of CPs over all RPs. Whenever RP selection changes,
  compute influence of RPs by all CPs.
* ProjectionObserver: with empty selections, go back to normal mode

1 files changed, 9 insertions, 0 deletions

diff --git a/projectionobserver.h b/projectionobserver.h
index c0ccd8a..badca4d 100644
--- a/projectionobserver.h
+++ b/projectionobserver.h
@@ -23,6 +23,8 @@ signals:
 public slots:
     void setMap(const arma::mat &Y);
     bool setType(int type);
+    void setCPSelection(const std::vector<bool> &cpSelection);
+    void setRPSelection(const std::vector<bool> &rpSelection);
 
 private:
     bool emitValuesChanged() const;
@@ -32,6 +34,13 @@ private:
     arma::mat m_distX, m_distY, m_origDistY, m_prevDistY;
     arma::uvec m_cpIndices, m_rpIndices;
 
+    bool m_cpSelectionEmpty, m_rpSelectionEmpty;
+    std::vector<int> m_cpSelection, m_rpSelection;
+
+    // alpha(i, j): the influence CP j has on RP i 
+    void computeAlphas();
+    arma::mat m_alphas, m_influences;
+
     // TODO: one per implemented measure
     arma::vec m_values, m_prevValues, m_origValues;
 };