#### germanburrito

##### Active member

So I'm testing this idea, I combined the trailstop indicator as well as a vwap indicator, but I would like to see how to change the line color when the line reverses below or above close, sort of like the trailstop indicator functions.

Finalized script here: https://usethinkscript.com/threads/trailingstop-and-vwapstop-color-change.5215/post-49785

Code:

```
# VWAPALOOZA
# By Prospectus @ http://readtheprospectus.worspress.com
#
# This Thinkscript calculates four different types of VWAP:
# OneDay (standard type), Rolling (N bar lookback), Bar
# Incremental (discrete N bar periods) and Volume Incremental
# (discrete N-shares-traded periods).
#H Kaczmarczyk added Deviation Lines & Clouds
declare upper;
#
# Check if we are on the current day:
#
def istoday = if getDay() == getLastDay() then 1 else 0;
#
# Input Rolling / Incremental period, VWAP type, and
# Averaging method ( (H+L)/2 or Close):
#
input Period = 21;
input DPeriod = 21;
def n = Period;
input VolIncrement=20000;
def v=VolIncrement;
input VWAPType = {Rolling,default BarIncremental, VolIncremental, OneDay};
def type;
switch (VWAPType){
case Rolling:
type = 1;
case BarIncremental:
type = 0;
case OneDay:
type = 2;
case VolIncremental:
type=3;
}
input AverageMethod = {CLOSE, default H_L};
def num;
switch (AverageMethod){
case CLOSE:
num = close;
case H_L:
num = (high + low) / 2;
}
#
# Define volume for today only (other days zero):
#
def todayvol = if istoday then volume else 0;
#
# Calculate the P*V term for VWAP:
#
def pv = num * todayvol;
#
# Code for BarIncremental counter:
#
rec k = if k[1] == n then 1 else k[1] + 1;
#
# Code for VolIncremental volume sum:
#
rec volsum=if volsum[1]>v then volume else volsum[1]+volume;
#
# Code for VolIncremental price*volume:
#
rec pvsum =if volsum[1]>v then num*volume else pvsum[1] + num*volume;
#
# Now define the VolIncremental to display:
#
rec volinc=if volsum[1]==0 then num else if volsum[1]>v then pvsum[1]/volsum[1] else volinc[1];
#
# Now the final VWAP calculations:
#
rec calcVWAP = if type == 2 then TotalSum(pv) / TotalSum(todayvol) else if type == 1 then sum(num*volume, n) / sum(volume, n) else if type==3 then volinc else if type==0 and k == n then sum(num*volume, n) / sum(volume, n) else calcvwap[1];
#
# Define the plot:
#
def VWAPALOOZA = calcvwap;
#
# TD Ameritrade IP Company, Inc. (c) 2009-2020
#
input trailType = {default modified, unmodified};
input ATRPeriod = 21;
input ATRFactor = 5;
input firstTrade = {default long, short};
input averageType = AverageType.WILDERS;
Assert(ATRFactor > 0, "'atr factor' must be positive: " + ATRFactor);
def HiLo = Min(high - low, 1.5 * Average(high - low, ATRPeriod));
def HRef = if low <= high[1]
then high - close[1]
else (high - close[1]) - 0.5 * (low - high[1]);
def LRef = if high >= low[1]
then close[1] - low
else (close[1] - low) - 0.5 * (low[1] - high);
def trueRange;
switch (trailType) {
case modified:
trueRange = Max(HiLo, Max(HRef, LRef));
case unmodified:
trueRange = TrueRange(high, close, low);
}
def loss = ATRFactor * MovingAverage(averageType, trueRange, ATRPeriod);
def state = {default init, long, short};
def trail;
switch (state[1]) {
case init:
if (!IsNaN(loss)) {
switch (firstTrade) {
case long:
state = state.long;
trail = close - loss;
case short:
state = state.short;
trail = close + loss;
}
} else {
state = state.init;
trail = Double.NaN;
}
case long:
if (close > trail[1]) {
state = state.long;
trail = Max(trail[1], close - loss);
} else {
state = state.short;
trail = close + loss;
}
case short:
if (close < trail[1]) {
state = state.short;
trail = Min(trail[1], close + loss);
} else {
state = state.long;
trail = close - loss;
}
}
def TrailingStop = trail;
plot both= (trailingstop+VWAPALOOZA)/2;
```

Finalized script here: https://usethinkscript.com/threads/trailingstop-and-vwapstop-color-change.5215/post-49785

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