Merge pull request #761 from remocristoforetti/dev_topasBugFix_strjoin

remove strjoin from TOPAS engine

Author: wahln

matRad/doseCalc/+DoseEngines/matRad_TopasMCEngine.m

@@ -2076,7 +2076,7 @@ function writeStfFields(obj,ct,stf,w,baseData)
                             fprintf(fileID,'s:Tf/ImageName/Function = "Step"\n');
                             % create time feature scorer and save with original rays and bixel names
                             imageName = ['sv:Tf/ImageName/Values = ',num2str(cutNumOfBixel),cell2mat(strcat(strcat(' "ray',strsplit(num2str([dataTOPAS.ray]))),strcat('_bixel',strsplit(num2str([dataTOPAS.bixel])),'"')))];
-                            fprintf(fileID,'%s\n',strjoin(imageName));
+                            fprintf(fileID,'%s\n',imageName);
                             fprintf(fileID,'dv:Tf/ImageName/Times = Tf/Beam/Spot/Times ms\n');
                         end
                     end