catch bad input

src/PinkIndexer.cpp

@@ -28,6 +28,9 @@ PinkIndexer::PinkIndexer(const ExperimentSettings& experimentSettings, Considere
 int PinkIndexer::indexPattern(Lattice& indexedLattice, Vector2f& centerShift, Array<bool, Dynamic, 1>& fittedPeaks, RowVectorXf& intensities,
                               const Matrix3Xf& meanReciprocalPeaks_1_per_A, int threadCount)
 {
+    if (meanReciprocalPeaks_1_per_A.cols() < 2)
+        return 0;
+
     Matrix2Xf detectorPeaks_m;
     reciprocalToRealProjection.project(detectorPeaks_m, meanReciprocalPeaks_1_per_A);
     return indexPattern(indexedLattice, centerShift, fittedPeaks, intensities, detectorPeaks_m, threadCount);
@@ -36,6 +39,9 @@ int PinkIndexer::indexPattern(Lattice& indexedLattice, Vector2f& centerShift, Ar
 int PinkIndexer::indexPattern(Lattice& indexedLattice, Vector2f& centerShift, Array<bool, Dynamic, 1>& fittedPeaks, RowVectorXf& intensities,
                               const Matrix2Xf& detectorPeaks_m, int threadCount)
 {
+    if (detectorPeaks_m.cols() < 2)
+        return 0;
+
     Matrix3Xf ucsDirections;
     Array2Xf ucsBorderNorms;
     backprojection.backProject(detectorPeaks_m, ucsDirections, ucsBorderNorms);