Dukascopy Support Board • View topic - send text or date and time input argument to indicator

iulian

Dear Sirs,

What is the simplest method to send exact date and time as optional input parameter to an indicator?

For example, I need this if I want to show the cumulated volume (or better, a volume profile) since the start of the current London trading session.

Thank you very much in advance!
Iulian

API Support

There is no directly suitable optional input descriptor for passing time values, as time in java is normally represented by the long datatype. Of course you could pass a string and then parse it by using SimpleDataFormat.parse, but that would be rather tedious and error-prone. Are you sure you want to pass a precise time value instead of trading session name? Say, you could make a list of trading sessions in the means of an optional input of type IntegerListDescription.

Ivan35

viewtopic.php?f=65&t=47877

for example:

optInputParameterInfos = new OptInputParameterInfo[] {
                new OptInputParameterInfo("Start bar (year)",   OptInputParameterInfo.Type.OTHER,   new IntegerRangeDescription(year, 2000, 2012, 1)),
                new OptInputParameterInfo("Start bar (month)",  OptInputParameterInfo.Type.OTHER,   new IntegerRangeDescription(month, 1, 12, 1)),
                new OptInputParameterInfo("Start bar (day)",    OptInputParameterInfo.Type.OTHER,   new IntegerRangeDescription(day, 1, 31, 1)),
                new OptInputParameterInfo("Start bar (hour)",   OptInputParameterInfo.Type.OTHER,   new IntegerRangeDescription(hour, 0, 23, 1)),
                new OptInputParameterInfo("Start bar (minute)", OptInputParameterInfo.Type.OTHER,   new IntegerRangeDescription(minute, 0, 59, 1))
 };

try {
            DateFormat df = new SimpleDateFormat("dd.MM.yyyy H:mm"){{
                setTimeZone(TimeZone.getTimeZone("GMT"));
            }};
            startBarTime = df.parse(day+"."+month+"."+year+" "+hour+":"+minute).getTime();
            startBarTime = history.getBarStart(fd.getPeriod(), startBarTime);

        } catch (ParseException e) {
            e.printStackTrace();
        }

iulian

Thank you both for your answers!
They are very usefull!

Iulian