gtMatchInitialize: set defaults theta limits

When it can't be set from input, default theta limits are defined here.

Signed-off-by: preischig <preischig@xnovotech.com>

3_pairmatchingGUI/gtMatchInitialize.m

@@ -402,12 +402,18 @@ end
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% Theta filter limits
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-if ~isempty(parameters.match.thetalimits)
-    handles.ThetaLimits = parameters.match.thetalimits;
+if isempty(parameters.match.thetalimits)
+    if (isempty(handles.labgeo.detanglemin) || ...
+        isempty(handles.labgeo.detanglemax))
+        handles.ThetaLimits = [0 45];
+    else
+        handles.ThetaLimits = 0.5*[handles.labgeo.detanglemin, ...
+                                   handles.labgeo.detanglemax];
+    end
 else
-    handles.ThetaLimits = 0.5*[handles.labgeo.detanglemin, ...
-                               handles.labgeo.detanglemax];
+    handles.ThetaLimits = parameters.match.thetalimits;
 end
+
 handles.ThetaLimLastLow  = handles.ThetaLimits(1);
 handles.ThetaLimLastHigh = handles.ThetaLimits(2);