Refs #20441 Fix comments from code review

Framework/DataObjects/src/Peak.cpp

@@ -796,9 +796,8 @@ double Peak::getSigmaIntensity() const { return m_sigmaIntensity; }
 
 /** Return the peak intensity divided by the error in the intensity */
 double Peak::getIntensityOverSigma() const {
-  if (m_sigmaIntensity == 0)
-    return 0;
-  return m_intensity / m_sigmaIntensity;
+  const auto result = m_intensity / m_sigmaIntensity;
+  return (std::isinf(result)) ? 0.0 : result;
 }
 
 /** Set the integrated peak intensity

Framework/DataObjects/test/PeakTest.h

@@ -572,14 +572,16 @@ public:
   void test_get_intensity_over_sigma_empty_sigma() {
     const int detectorId = 19999;
     const double wavelength = 2;
-    const double intensity{0};
+    const double intensity{10};
     const double sigma{0};
     Peak p(inst, detectorId, wavelength);
 
     p.setIntensity(intensity);
     p.setSigmaIntensity(sigma);
 
-    TS_ASSERT_DELTA(p.getIntensityOverSigma(), 0, 1e-10);
+    const double expectedResult {0.0};
+    const double tolerance {1e-10};
+    TS_ASSERT_DELTA(p.getIntensityOverSigma(), expectedResult, tolerance);
   }
 
   void test_get_energy() {

qt/widgets/sliceviewer/src/QPeaksTableModel.cpp

@@ -174,27 +174,28 @@ QPeaksTableModel::QPeaksTableModel(
       },
       [](const IPeak &peak) { return QVariant(peak.getRow()); },
       [](const IPeak &peak) { return QVariant(peak.getCol()); },
-      [&v3dAsString](const IPeak &peak) {
-        return v3dAsString(peak.getQLabFrame());
+      [](const IPeak &peak) {
+        return QVariant(peak.getQLabFrame().norm());
       },
-      [&v3dAsString](const IPeak &peak) {
-        return v3dAsString(peak.getQSampleFrame());
+      [](const IPeak &peak) {
+        return QVariant(peak.getQSampleFrame().norm());
       },
   };
 
+  const auto hklPrec = m_hklPrec;
   // Mapping member functions of the Peak object to a column index with
   // formatting for displaying data to the user
   m_formattedValueLookup = {
       [](const IPeak &peak) { return QString::number(peak.getRunNumber()); },
       [](const IPeak &peak) { return QString::number(peak.getDetectorID()); },
-      [this](const IPeak &peak) {
-        return QString::number(peak.getH(), 'f', m_hklPrec);
+      [&hklPrec](const IPeak &peak) {
+        return QString::number(peak.getH(), 'f', hklPrec);
       },
-      [this](const IPeak &peak) {
-        return QString::number(peak.getK(), 'f', m_hklPrec);
+      [&hklPrec](const IPeak &peak) {
+        return QString::number(peak.getK(), 'f', hklPrec);
       },
-      [this](const IPeak &peak) {
-        return QString::number(peak.getL(), 'f', m_hklPrec);
+      [&hklPrec](const IPeak &peak) {
+        return QString::number(peak.getL(), 'f', hklPrec);
       },
       [](const IPeak &peak) {
         return QString::number(peak.getWavelength(), 'f', 4);