fix: check there is data before enabling auto-compression event in mag.imap.view.Field

Author: mfacchinelli

resources/release-notes.md

@@ -3,6 +3,10 @@
 - (All) Add shortcut to open app from toolbar (quick access)
 - (All) Fix errors when closing app during mission selection
 
+## Software
+
+- (IMAP) Check there is data before enabling auto-compression event in `mag.imap.view.Field`
+
 ## Package
 
 - Add MATLAB package definition

src/mission/imap/+mag/+imap/+view/Field.m

@@ -93,7 +93,10 @@ function visualize(this)
 
             selectedEvents = this.Events;
 
-            if isempty(selectedEvents) && (any(diff(primary.Compression) ~= 0) || any(diff(secondary.Compression) ~= 0))
+            if isempty(selectedEvents) && ...
+                ((primary.HasData && any(diff(primary.Compression) ~= 0)) || ...
+                (secondary.HasData && any(diff(secondary.Compression) ~= 0)))
+
                 selectedEvents = "Compression";
             end