Trade markers

4 functions

These place an entry or exit marker and, in hosts that support order routing, raise a trade event. Passing DRAWNULL as the price suppresses the marker.

BUY(COND, PRICE, ICON, COLOR)

Long entry marker.

COND(condition): Where the entry fires.
PRICE(series): Marker price. DRAWNULL raises the event without drawing anything.
ICON(integer): Icon number. Optional.
COLOR(color): Marker colour. Optional.

// pair the entry with its exit, and filter so the two
// alternate — otherwise the marker fires all the way up
B := CROSS(MA(CLOSE, 5), MA(CLOSE, 20));
S := CROSS(MA(CLOSE, 20), MA(CLOSE, 5));
BUY(TFILTER(B, S, 0), LOW);
SELL(TFILTER(S, B, 0), HIGH);

SELL(COND, PRICE, ICON, COLOR)

Long exit marker.

COND(condition): Where the exit fires.
PRICE(series): Marker price. DRAWNULL suppresses the marker.
ICON(integer): Icon number. Optional.
COLOR(color): Marker colour. Optional.

// exit on either a crossover or a trailing stop, whichever
// comes first
STOP := LLV(LOW, 10);
SELL(CROSS(MA(CLOSE, 20), MA(CLOSE, 5)) OR CLOSE < STOP, HIGH);

BUYSHORT(COND, PRICE, ICON, COLOR)

Short entry marker.

COND(condition): Where the short entry fires.
PRICE(series): Marker price. DRAWNULL suppresses the marker.
ICON(integer): Icon number. Optional.
COLOR(color): Marker colour. Optional.

// the short side of the same system — note BUYSHORT opens
// the position and SELLSHORT closes it, not the other way round
BS := CROSS(MA(CLOSE, 20), MA(CLOSE, 5));
SS := CROSS(MA(CLOSE, 5),  MA(CLOSE, 20));
BUYSHORT(TFILTER(BS, SS, 0), HIGH);
SELLSHORT(TFILTER(SS, BS, 0), LOW);

SELLSHORT(COND, PRICE, ICON, COLOR)

Short exit marker.

COND(condition): Where the short exit fires.
PRICE(series): Marker price. DRAWNULL suppresses the marker.
ICON(integer): Icon number. Optional.
COLOR(color): Marker colour. Optional.

// cover the short at a target instead of a crossover
ENTRY := VALUEWHEN(CROSS(MA(CLOSE, 20), MA(CLOSE, 5)), CLOSE);
SELLSHORT(CLOSE < ENTRY * 0.95, LOW);