Added function to convert mat file to json file

export_to_json.m

+%% Export mat structures to json
+
+% %% Inputs
+% filepath - str including file extension (.mat)
+% isparam - optinal, bool
+% modelName - optional, string with modelName (name of IQM textfile) 
+
+function [] = export_to_json(varargin)
+
+% Assign inputs
+filepath = varargin{1};
+
+switch size(varargin,2)
+    case 1
+        isparam = false;
+        modelName = [];
+
+    case 2
+        if class(varargin{2}) == "string" || class(varargin{2}) == "char"
+            modelName = varargin{2};
+            isparam = false;
+        else
+            modelName = [];
+            isparam = varargin{2};
+        end
+
+    case 3
+        if class(varargin{2}) == "string" || class(varargin{2}) == "char"
+            modelName = varargin{2};
+            isparam = varargin{3};
+        else
+            modelName = varargin{3};
+            isparam = varargin{2};
+        end
+
+    otherwise
+        warning('to many inputs. Format is \n filepath, optional-bool, optional-modelName')
+
+        if class(varargin{2}) == "string" || class(varargin{2}) == "char"
+            modelName = varargin{2};
+            isparam = varargin{3};
+        else
+            modelName = varargin{3};
+            isparam = varargin{2};
+        end
+end
+
+%% format output
+data = importdata(filepath);
+s = [];
+
+%strucure param data with cost and params 
+if isparam
+    s.f = data.fbest;
+    s.x = exp(data.xbest); 
+    
+    if ~isempty(modelName)
+        [pnames, ~] = IQMparameters(IQMmodel([modelName '.txt']));
+        s.pnames = pnames;
+    end
+% strucutures i.e. data structures
+else
+    s = data;
+end
+
+%preview format
+jsonencode(s,PrettyPrint=true)
+
+% print to file
+strseg = split(filepath, ["\", "/"]);
+resname = extractBefore(strseg{end}, ".mat");
+JSONFILE_name= strcat([resname '.json']); 
+fid=fopen(JSONFILE_name,'w'); 
+fprintf(fid, jsonencode(s, PrettyPrint=true)); 
+fclose(fid); 
+end
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