diff --git a/mainwindow.ui b/mainwindow.ui
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -440,13 +440,19 @@
           <property name="fieldGrowthPolicy">
            <enum>QFormLayout::AllNonFixedFieldsGrow</enum>
           </property>
-          <item row="2" column="1">
-           <widget class="QDoubleSpinBox" name="spYmax"/>
-          </item>
-          <item row="1" column="1">
+          <item row="3" column="1">
            <widget class="QDoubleSpinBox" name="spYmin">
+            <property name="enabled">
+             <bool>false</bool>
+            </property>
+            <property name="maximumSize">
+             <size>
+              <width>75</width>
+              <height>16777215</height>
+             </size>
+            </property>
             <property name="value">
-             <double>1.000000000000000</double>
+             <double>0.000000000000000</double>
             </property>
            </widget>
           </item>
@@ -474,19 +480,48 @@
            </widget>
           </item>
           <item row="1" column="0">
-           <widget class="QCheckBox" name="cbYmin">
+           <widget class="QCheckBox" name="cbAutoScale">
+            <property name="text">
+             <string>Auto Scale Y Axis</string>
+            </property>
+            <property name="checked">
+             <bool>true</bool>
+            </property>
+           </widget>
+          </item>
+          <item row="3" column="0">
+           <widget class="QLabel" name="lYmin">
+            <property name="enabled">
+             <bool>false</bool>
+            </property>
             <property name="text">
              <string>Ymin</string>
             </property>
            </widget>
           </item>
           <item row="2" column="0">
-           <widget class="QCheckBox" name="cbYMax">
+           <widget class="QLabel" name="lYmax">
+            <property name="enabled">
+             <bool>false</bool>
+            </property>
             <property name="text">
              <string>Ymax</string>
             </property>
            </widget>
           </item>
+          <item row="2" column="1">
+           <widget class="QDoubleSpinBox" name="spYmax">
+            <property name="enabled">
+             <bool>false</bool>
+            </property>
+            <property name="maximumSize">
+             <size>
+              <width>75</width>
+              <height>16777215</height>
+             </size>
+            </property>
+           </widget>
+          </item>
          </layout>
         </item>
        </layout>
@@ -501,7 +536,7 @@
      <x>0</x>
      <y>0</y>
      <width>653</width>
-     <height>20</height>
+     <height>23</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuFile">