Add new functions

Functions/EQ_visuals/showLevelConfusionMatrix.m

@@ -0,0 +1,27 @@
+function showLevelConfusionMatrix(decided_symbols,ref_symbols,options)
+arguments
+    decided_symbols
+    ref_symbols
+    options.M = NaN
+    options.fignum (1,1) double = NaN % Default to NaN if not provided
+    options.displayname (1,:) char = '' % Default to an empty string if not provided
+end
+
+% Determine the figure number to use or create a new figure
+if isnan(options.fignum)
+    fig = figure; % Create a new figure and get its handle
+else
+    fig = figure(options.fignum); % Use the specified figure number
+end
+
+if length(unique(decided_symbols.signal))>20
+    assert(~isnan(options.M),'Provide either decided symbol sequence or modulation order M (PAM-4 -> M=4)');
+    decided_symbols = PAMmapper(options.M,0).quantize(decided_symbols);
+end
+
+%%% Confusion Matrix
+cm = confusionchart(ref_symbols.signal,decided_symbols.signal,'RowSummary','row-normalized','ColumnSummary','column-normalized','Title','Confusion Matrix','XLabel','Decisions','YLabel','Transmitted');
+
+
+end
+