Move population graph to main window next to map

src/main.qml

@@ -49,10 +49,6 @@ ApplicationWindow {
         }
         Menu {
             title: "&Data"
-            Action {
-                text: "Show &Population Graph"
-                onTriggered: { populationGraph.visible = true }
-            }
             Action {
                 text: "Save &Simulation Output"
                 onTriggered: { Julia.saveoutput() }
@@ -78,10 +74,19 @@ ApplicationWindow {
     // visualise the model map and the locations of animals
     MakieViewport {
         id: mapviewport
-        anchors.fill: parent
+        width: parent.width / 2
+        height: parent.height
         renderFunction: render_map_callback
     }
 
+    MakieViewport {
+        id: plotviewport
+        x: parent.width / 2
+        width: parent.width / 2
+        height: parent.height
+        renderFunction: render_plot_callback
+    }
+
     // the main control bar, with pause/step/run buttons, the progress
     // bar and a speed slider
     footer: ToolBar {
@@ -166,20 +171,6 @@ Distributed under the MIT license."
         onAccepted: { Julia.savesimulation(selectedFile.toString()) }
     }
 
-    Window {
-        id: populationGraph
-        title: "Population Graph"
-        width: 512
-        height: 512
-        visible: false
-
-        MakieViewport {
-            id: plotviewport
-            anchors.fill: parent
-            renderFunction: render_plot_callback
-        }
-    }
-
     Popup {
         id: splashPopup
         parent: Overlay.overlay