Added check if the figure exists for plot routine of edit time of arrival window.

lib/+artoa/+controller/+edit/+timeOfArrival/plot.m

@@ -25,6 +25,12 @@ else
     y = artoaWorkspace.toaData.toa;
 end
 
+%% Check if the figure exists
+if ~isfield(artoaGui.figures, 'editTimeOfArrival') ...
+        || ~ishandle(artoaGui.figures.editTimeOfArrival)
+    return;
+end
+
 %% If the plot exists, just update the values
 
 if isfield(artoaGui.editTimeOfArrival, 'scatterTimeOfArrival') ...