Remove week-end historycal data

skip over it?  if(5 < DayOfWeek() || DayOfWeek()  == 0){ weekend data } else{ Your Code }

 How are you using the history file? exporting and running the data through matlab or such or using strategy tester etc? (im not very familiar with hist data, i just write cvs files for tick data for relevant periods.)

 If you actually want to remove the weekend data from the hist download then export the csv then open it using your language of choice, then increment through data copying it and skipping 2 in every 7 given the date.

 I'd need more information to help you any further.

I'm not referring to removed it during the EA code execution. As you say it can be easily done by using DayOfWeek() function. What I'm trying to do is to remove it from "../history/symbol1.csv"  file. I'm looking for an automatically method to do that and I assume that a script like PeriodConverter can do that but I don't know how.

Well export it as a csv, im guessing you can code in c++ if your using mql4, Open the csv file in c++, and just make a new array, copy the values into new array by incrementing the file skipping 2 for weekends, then write array to csv?  Infract you could do it in mql easy using the  if(5 < DayOfWeek() || DayOfWeek()  == 0){ weekend data } else{ ArrayOpen[i] = csvarrayopen[i] } then filehandle = FileOpen("whatevercsv.csv", TYPE_CSV); 

FileWrite(filehadle, openarray[i], closearray[i], higharray[i], lowarray[i]) etc etc....should be pretty basic.