diff --git a/topsoilApp/src/main/java/org/cirdles/topsoil/app/control/plot/panel/DataOptionsController.java b/topsoilApp/src/main/java/org/cirdles/topsoil/app/control/plot/panel/DataOptionsController.java
index 3e00ba21..8d5417fb 100644
--- a/topsoilApp/src/main/java/org/cirdles/topsoil/app/control/plot/panel/DataOptionsController.java
+++ b/topsoilApp/src/main/java/org/cirdles/topsoil/app/control/plot/panel/DataOptionsController.java
@@ -46,6 +46,7 @@ public class DataOptionsController extends AnchorPane {
     @FXML ColorPicker unctBarsFillColorPicker;
 
     @FXML CheckBox showUnincludedCheckBox;
+    @FXML CheckBox resetViewOnChangeUnc;
 
 	private ToggleGroup uncertaintyToggleGroup = new ToggleGroup();
 
@@ -82,7 +83,7 @@ public DataOptionsController() {
     	// Populate Uncertainty ComboBox
 		uncertaintyComboBox.getItems().addAll(Uncertainty.ONE_SIGMA_ABSOLUTE, Uncertainty
 				.TWO_SIGMA_ABSOLUTE, Uncertainty.NINETY_FIVE_PERCENT_CONFIDENCE);
-    	uncertaintyComboBox.getSelectionModel().select(Uncertainty.ONE_SIGMA_ABSOLUTE);
+    	uncertaintyComboBox.getSelectionModel().select(Uncertainty.TWO_SIGMA_ABSOLUTE);
 
     	// Configure ellipses/unctbars RadioButtons
     	RadioButtonSelectionHandler ellipsesSelectionHandler = new RadioButtonSelectionHandler(ellipsesRadioButton);
@@ -132,6 +133,7 @@ public DataOptionsController() {
         fireEventOnChanged(ellipsesRadioButton.selectedProperty(), ellipsesRadioButton, PlotOption.ELLIPSES);
         fireEventOnChanged(unctBarsRadioButton.selectedProperty(), unctBarsRadioButton, PlotOption.UNCTBARS);
         fireEventOnChanged(showUnincludedCheckBox.selectedProperty(), showUnincludedCheckBox, PlotOption.SHOW_UNINCLUDED);
+        fireEventOnChanged(resetViewOnChangeUnc.selectedProperty(), resetViewOnChangeUnc, PlotOption.RESET_VIEW_ON_CHANGE_UNC);
 
         fireEventOnChanged(pointsFillValue, pointsFillColorPicker, PlotOption.POINTS_FILL);
         fireEventOnChanged(pointsOpacityValue, pointsFillColorPicker, PlotOption.POINTS_OPACITY);
@@ -142,6 +144,7 @@ public DataOptionsController() {
 
 		uncertaintyCheckBox.fire();
 		showUnincludedCheckBox.fire();
+		resetViewOnChangeUnc.fire();
 
     }
 
diff --git a/topsoilApp/src/main/java/org/cirdles/topsoil/app/control/plot/panel/PlotOptionsPanel.java b/topsoilApp/src/main/java/org/cirdles/topsoil/app/control/plot/panel/PlotOptionsPanel.java
index e880404d..383983e4 100644
--- a/topsoilApp/src/main/java/org/cirdles/topsoil/app/control/plot/panel/PlotOptionsPanel.java
+++ b/topsoilApp/src/main/java/org/cirdles/topsoil/app/control/plot/panel/PlotOptionsPanel.java
@@ -259,6 +259,7 @@ private void setUpdateActions() {
 		updateActions.put(ISOTOPE_SYSTEM, (value) -> dataOptions.isotopeSystemComboBox.getSelectionModel().select((IsotopeSystem) value));
 		updateActions.put(UNCERTAINTY, (value) -> dataOptions.uncertaintyComboBox.getSelectionModel().select((Uncertainty) value));
 
+		updateActions.put(RESET_VIEW_ON_CHANGE_UNC, (value) -> dataOptions.resetViewOnChangeUnc.setSelected((Boolean) value));
 		updateActions.put(SHOW_UNINCLUDED, (value) -> dataOptions.showUnincludedCheckBox.setSelected((Boolean) value));
 		updateActions.put(POINTS, (value) -> dataOptions.pointsCheckBox.setSelected((Boolean) value));
 		updateActions.put(POINTS_FILL, (value) -> dataOptions.pointsFillColorPicker.setValue(
diff --git a/topsoilApp/src/main/resources/org/cirdles/topsoil/app/control/plot/panel/data-options-menu.fxml b/topsoilApp/src/main/resources/org/cirdles/topsoil/app/control/plot/panel/data-options-menu.fxml
index 297386bc..ccae790d 100644
--- a/topsoilApp/src/main/resources/org/cirdles/topsoil/app/control/plot/panel/data-options-menu.fxml
+++ b/topsoilApp/src/main/resources/org/cirdles/topsoil/app/control/plot/panel/data-options-menu.fxml
@@ -153,6 +153,11 @@
                                  <Insets />
                              </VBox.margin>
                          </CheckBox>
+                         <CheckBox fx:id="resetViewOnChangeUnc" mnemonicParsing="false" text="Reset View when Uncertainty is Changed" underline="true">
+                            <VBox.margin>
+                               <Insets />
+                            </VBox.margin>
+                         </CheckBox>
                      </children>
                      <padding>
                         <Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
diff --git a/topsoilCore/src/main/java/org/cirdles/topsoil/plot/PlotOption.java b/topsoilCore/src/main/java/org/cirdles/topsoil/plot/PlotOption.java
index 336b74a9..c71e4a39 100644
--- a/topsoilCore/src/main/java/org/cirdles/topsoil/plot/PlotOption.java
+++ b/topsoilCore/src/main/java/org/cirdles/topsoil/plot/PlotOption.java
@@ -49,6 +49,7 @@ public static PlotOption<?> forKey(String key) {
     public static final PlotOption<Number> R238_235S = numberValue("R238_235S", 137.88);
 
     public static final PlotOption<Boolean> SHOW_UNINCLUDED = booleanValue("show_unincluded", true);
+    public static final PlotOption<Boolean> RESET_VIEW_ON_CHANGE_UNC = booleanValue("reset_view_on_change_unc", true);
 
     public static final PlotOption<Boolean> POINTS = booleanValue("points", true);
     public static final PlotOption<String> POINTS_FILL = stringValue("points_fill", "steelblue");
@@ -90,7 +91,7 @@ public static PlotOption<?> forKey(String key) {
                 LAMBDA_U234, LAMBDA_U235, LAMBDA_U238, LAMBDA_TH230,
                 R238_235S,
 
-                SHOW_UNINCLUDED,
+                SHOW_UNINCLUDED, RESET_VIEW_ON_CHANGE_UNC,
 
                 POINTS, POINTS_FILL, POINTS_OPACITY,
 
diff --git a/topsoilCore/src/main/resources/org/cirdles/topsoil/plot/topsoil.js b/topsoilCore/src/main/resources/org/cirdles/topsoil/plot/topsoil.js
index 686cb2de..d33b2c50 100644
--- a/topsoilCore/src/main/resources/org/cirdles/topsoil/plot/topsoil.js
+++ b/topsoilCore/src/main/resources/org/cirdles/topsoil/plot/topsoil.js
@@ -14150,7 +14150,7 @@ const ELLIPSE_CLASS = "ellipse";
 exports.Ellipses = {
     draw(plot) {
         const { ellipses_fill: fill, ellipses_opacity: opacity, uncertainty } = plot.options;
-        console.log("uncertaintyE: " + uncertainty + " typeOf: " + typeof uncertainty);
+        console.log("options.reset_: " + plot.options.reset_view_on_change_unc);
         const layerToDrawOn = plots_1.findLayer(plot, plots_1.Feature.ELLIPSES);
         const ellipses = layerToDrawOn.selectAll("." + ELLIPSE_CLASS).data(calcEllipses(plot.data, uncertainty));
         ellipses.exit().remove();
@@ -14441,6 +14441,7 @@ class McLeanRegression {
             lowerEnvelope.attr("d", lineGenerator(this.envelopeLowerBound));
             upperEnvelope.attr("d", lineGenerator(this.envelopeUpperBound));
         }
+        info.text("this: " + plot.options.reset_view_on_change_unc);
         let leftText = plot.leftTextSVGElement;
         leftText.text("Slope: " + regression.getRoundedSlope(5) + ", y-intercept: " + regression.getRoundedIntercept(5));
     }
@@ -15431,6 +15432,7 @@ var Option;
     Option["LAMBDA_238"] = "lambda_238";
     Option["R238_235S"] = "R238_235S";
     Option["SHOW_UNINCLUDED"] = "show_unincluded";
+    Option["RESET_VIEW_ON_CHANGE_UNC"] = "reset_view_on_change_unc";
     Option["POINTS"] = "points";
     Option["POINTS_FILL"] = "points_fill";
     Option["POINTS_OPACITY"] = "points_opacity";
@@ -15857,6 +15859,18 @@ class ScatterPlot extends plot_abstract_1.default {
             this.javaBridge.syncAxes(xDomain[0], xDomain[1], yDomain[0], yDomain[1]);
         }
     }
+    set options(options) {
+        super.options = options;
+        //this._options = options;
+        if (options.uncertainty != this._options.uncertainty
+            && options.reset_view_on_change_unc) {
+            this.resetView();
+        }
+        this.update();
+    }
+    get options() {
+        return super.options;
+    }
     getDataExtents() {
         const extents = [1000000, -1000000, 1000000, -1000000];
         let sigmaX, sigmaY;