dear all

i am working in flexible job shop scheduling using a metaheuristic. am encountering problems in gantt chart formulation. while coding am unable to get the gantt chart as seen in literature, though am getting correct operation sequence and decoding has been done correctly. am using firefly algorithm and matlab is used. when asked my matlab instructor he is saying this type of gantt chart is not possible in matlab, i have to do it seaprately with the data values am getting while running the main program. is that right? or am i making mistake somewhere?please help.

and am solving it for kacem instances.

first attached gantt chart is from literature, second one is mine.