specular case

GUI/Model/Axis/AmplitudeAxisItem.cpp

@@ -124,6 +124,6 @@ void AmplitudeAxisItem::setLogRangeOrders(double v)
 
 void AmplitudeAxisItem::adjustLogRangeOrders()
 {
-    if (min() > 0)
+    if (min() > 0 && max() > 0)
         m_logRangeOrders = std::log10(max() / min());
 }

GUI/Model/Data/SpecularDataItem.cpp

@@ -291,12 +291,16 @@ QPair<double, double> SpecularDataItem::dataRange() const
 
     const auto vec = data->flatVector();
     double min(*std::min_element(vec.cbegin(), vec.cend()));
+    min = std::numeric_limits<double>::epsilon() < min ? min : default_min;
+
     double max(*std::max_element(vec.cbegin(), vec.cend()));
+    max *= 1.1;
 
-    min /= 2.0;
-    min = std::numeric_limits<double>::epsilon() < min ? min : default_min;
-    max *= 2.0;
-    max = max > min ? max : default_max;
+    double logRange = pow(10, yAxisItem()->logRangeOrders());
+    if (isLog())
+        min = std::max(min, max / logRange);
+    else
+        min /= 2.0;
 
     return QPair<double, double>(min, max);
 }

GUI/View/PlotSpecular/SpecularDataPropertyWidget.cpp

@@ -90,12 +90,26 @@ void SpecularDataPropertyWidget::createPanelElements()
     yFormLayout->setContentsMargins(0, 0, 0, 0);
     yFormLayout->setSpacing(5);
 
+    auto* logRangeSpinbox = GUI::Util::createDoubleSpinbox(
+        [this] { return currentSpecularDataItem()->yAxisItem()->logRangeOrders(); },
+        [this](double newValue) {
+            for (auto item : mainSpecularDataItems()) {
+                item->yAxisItem()->setLogRangeOrders(newValue);
+                updateUIValues();
+            }
+            gProjectDocument.value()->setModified();
+        },
+        &m_updaters, "Dynamic range to display values", RealLimits::positive());
+
     yFormLayout->addRow("Min:",
                         GUI::Util::createDoubleSpinbox(
                             [this] { return currentSpecularDataItem()->yAxisItem()->min(); },
                             [this](double newValue) {
-                                for (auto item : mainSpecularDataItems())
+                                for (auto item : mainSpecularDataItems()) {
                                     item->yAxisItem()->setMin(newValue);
+                                    item->yAxisItem()->adjustLogRangeOrders();
+                                    updateUIValues();
+                                }
                                 gProjectDocument.value()->setModified();
                             },
                             &m_updaters));
@@ -104,21 +118,27 @@ void SpecularDataPropertyWidget::createPanelElements()
                         GUI::Util::createDoubleSpinbox(
                             [this] { return currentSpecularDataItem()->yAxisItem()->max(); },
                             [this](double newValue) {
-                                for (auto item : mainSpecularDataItems())
+                                for (auto item : mainSpecularDataItems()) {
                                     item->yAxisItem()->setMax(newValue);
+                                    item->yAxisItem()->adjustLogRangeOrders();
+                                    updateUIValues();
+                                }
                                 gProjectDocument.value()->setModified();
                             },
                             &m_updaters));
 
     yFormLayout->addRow(GUI::Util::createCheckBox(
         "log10", [this] { return currentSpecularDataItem()->yAxisItem()->isLogScale(); },
-        [this](bool b) {
+        [this, logRangeSpinbox](bool b) {
+            logRangeSpinbox->setEnabled(b);
             for (auto item : allSpecularDataItems())
                 item->yAxisItem()->setLogScale(b);
             gProjectDocument.value()->setModified();
         },
         &m_updaters));
 
+    yFormLayout->addRow("Log range:", logRangeSpinbox);
+
     m_mainLayout->addRow(yGroup);
 
     updateUIValues();