ATR-Based Volatility Stop Script not working

A

abbasia

New member
Hello everyone,
I have this ATR-based volatility stop script which is the modified version of TD. The script works, but I'm trying to make a small change, so it ONLY shows the current/active state as opposed to all the historical ones. I like my charts clean. Here is the two lines added to the old code. When I add the changes, it doesn'plot the TrailingStop anymore. Can someone help? Thanks a million.

------------ Here is the code the works --------
## Volatility Trailing Stop
## Version 1.1
## By Steve Coombs
## This ATR Trailing Stop is calculated using the Highest Close in an uptrend or
## the Lowest Close in a downtrend, rather than just the Close that is used
## in the standard TOS ATRTrailing Stop
#input StopLabel = yes; #ATRStop Label is Stop value from yesterdays ATR calculation
input ATRPeriod = 8;
input ATRFactor = 3.0;
input firstTrade = {default long, short};
input averageType = AverageType.EXPONENTIAL;

Assert(ATRFactor > 0, "'atr factor' must be positive: " + ATRFactor);
def trueRange = TrueRange(high, close, low);
def loss = ATRFactor * MovingAverage(averageType, trueRange, ATRPeriod);

def state = {default init, long, short};
def trail;
def mclose;
switch (state[1]) {
case init:
if (!IsNaN(loss)) {
switch (firstTrade) {
case long:
state = state.long;
mclose = close;
trail = close - loss;
case short:
state = state.short;
mclose = close;
trail = close + loss;
}
} else {
state = state.init;
trail = Double.NaN;
mclose = Double.NaN;
}
case long:
if (close > trail[1]) {
state = state.long;
mclose = Max(mclose[1], close);
trail = Max (trail[1], mclose - loss);
} else {
state = state.short;
mclose = close;
trail = mclose + loss;
}
case short:
if (close < trail[1]) {
state = state.short;
mclose = Min(mclose[1], close);
trail = Min(trail[1], mclose + loss);
} else {
state = state.long;
mclose = close + 0;
trail = mclose - loss;
}
}

#AddLabel(StopLabel, "ATR Stop =" + Round(trail[1], 2), color = Color.BLUE);
plot TrailingStop = trail;

TrailingStop.SetPaintingStrategy(PaintingStrategy.POINTS);
TrailingStop.SetLineWeight(lineWeight = 3);
TrailingStop.DefineColor("Buy", GetColor(5));
TrailingStop.DefineColor("Sell", GetColor(1));
TrailingStop.AssignValueColor(if state == state.long
then TrailingStop.Color("Sell")
else TrailingStop.Color("Buy"));

# Alerts:
def VStopBull = state[1] == state.short and state == state.long;
def VStopBear = state[1] == state.long and state == state.short;

plot VStopLong = VStopBull AND (close is greater than TrailingStop);
plot VStopShort = VStopBear AND (close is less than TrailingStop);

# BLOCK CODE BELOW
input UseAlerts = {false, default true};
input AlertSound = {"Bell", "Chimes", default "Ding", "NoSound", "Ring"};
Alert(VStopBull AND UseAlerts, "VStop Transition Bull", Alert.BAR, Sound.Ding);
Alert(VStopBear AND UseAlerts,"VStop Transition Bear", Alert.BAR, Sound.Ding);

----------------------------------------------------
When I add this, the TrailingStop doesn't show.

def newState = HighestAll(if state <> state[1] then BarNumber() else 0);
plot TrailingStop = if BarNumber() < newState then Double.NaN else trail;
 
Solution
halcyonguy
abbasia said:
Unfortunately, it didn't. Same problem as my original code with the state machine. It doesn't plot TrailingStop at all.
Click to expand...

this works , plots just the most recent stop points

i had to fix this line in post6
,.. def maxcnt = highestall(bs_cnt);
it wasn't right. it found the highest barnumber, but not the one with prices.


Code: 
# atr_stop_just_last_02

#https://usethinkscript.com/threads/atr-based-volatility-stop-script-not-working.12573/
#ATR-Based Volatility Stop Script not working

#input StopLabel = yes; #ATRStop Label is Stop value from yesterdays ATR calculation
input ATRPeriod = 8;
input ATRFactor = 3.0;
input firstTrade = {default long, short};
input averageType = AverageType.EXPONENTIAL;

Assert(ATRFactor > 0, "'atr...
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abbasia said:
Hello everyone,
I have this ATR-based volatility stop script which is the modified version of TD. The script works, but I'm trying to make a small change, so it ONLY shows the current/active state as opposed to all the historical ones. I like my charts clean. Here is the two lines added to the old code. When I add the changes, it doesn'plot the TrailingStop anymore. Can someone help? Thanks a million.

------------ Here is the code the works --------
## Volatility Trailing Stop
## Version 1.1
## By Steve Coombs
## This ATR Trailing Stop is calculated using the Highest Close in an uptrend or
## the Lowest Close in a downtrend, rather than just the Close that is used
## in the standard TOS ATRTrailing Stop
#input StopLabel = yes; #ATRStop Label is Stop value from yesterdays ATR calculation
input ATRPeriod = 8;
input ATRFactor = 3.0;
input firstTrade = {default long, short};
input averageType = AverageType.EXPONENTIAL;

Assert(ATRFactor > 0, "'atr factor' must be positive: " + ATRFactor);
def trueRange = TrueRange(high, close, low);
def loss = ATRFactor * MovingAverage(averageType, trueRange, ATRPeriod);

def state = {default init, long, short};
def trail;
def mclose;
switch (state[1]) {
case init:
if (!IsNaN(loss)) {
switch (firstTrade) {
case long:
state = state.long;
mclose = close;
trail = close - loss;
case short:
state = state.short;
mclose = close;
trail = close + loss;
}
} else {
state = state.init;
trail = Double.NaN;
mclose = Double.NaN;
}
case long:
if (close > trail[1]) {
state = state.long;
mclose = Max(mclose[1], close);
trail = Max (trail[1], mclose - loss);
} else {
state = state.short;
mclose = close;
trail = mclose + loss;
}
case short:
if (close < trail[1]) {
state = state.short;
mclose = Min(mclose[1], close);
trail = Min(trail[1], mclose + loss);
} else {
state = state.long;
mclose = close + 0;
trail = mclose - loss;
}
}

#AddLabel(StopLabel, "ATR Stop =" + Round(trail[1], 2), color = Color.BLUE);
plot TrailingStop = trail;

TrailingStop.SetPaintingStrategy(PaintingStrategy.POINTS);
TrailingStop.SetLineWeight(lineWeight = 3);
TrailingStop.DefineColor("Buy", GetColor(5));
TrailingStop.DefineColor("Sell", GetColor(1));
TrailingStop.AssignValueColor(if state == state.long
then TrailingStop.Color("Sell")
else TrailingStop.Color("Buy"));

# Alerts:
def VStopBull = state[1] == state.short and state == state.long;
def VStopBear = state[1] == state.long and state == state.short;

plot VStopLong = VStopBull AND (close is greater than TrailingStop);
plot VStopShort = VStopBear AND (close is less than TrailingStop);

# BLOCK CODE BELOW
input UseAlerts = {false, default true};
input AlertSound = {"Bell", "Chimes", default "Ding", "NoSound", "Ring"};
Alert(VStopBull AND UseAlerts, "VStop Transition Bull", Alert.BAR, Sound.Ding);
Alert(VStopBear AND UseAlerts,"VStop Transition Bear", Alert.BAR, Sound.Ding);

----------------------------------------------------
When I add this, the TrailingStop doesn't show.

def newState = HighestAll(if state <> state[1] then BarNumber() else 0);
plot TrailingStop = if BarNumber() < newState then Double.NaN else trail;
Click to expand...

i think you want just the last point to be plotted.
i think this will do that.

copy the code below into your code, just above your
plot TrailingStop = ... code line.

then disable your line, like this
# plot TrailingStop


Code: 
# plot just the last point
input recent_bars = 1;
# x is true during the last y bars on chart
def x = (!isnan(close) and isnan(close[-recent_bars]));

plot TrailingStop = if x then trail else double.nan;
 
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halcyonguy said:
i think you want just the last point to be plotted.
i think this will do that.

copy the code below into your code, just above your
plot TrailingStop = ... code line.

then disable your line, like this
# plot TrailingStop


Code: 
# plot just the last point
input recent_bars = 1;
# x is true during the last y bars on chart
def x = (!isnan(close) and isnan(close[-recent_bars]));

plot TrailingStop = if x then trail else double.nan;
Click to expand...

That worked! Thanks so much. I hope it's not too much to ask but is it possible to make it plot the last state? By last state I mean the trailing stop dots moving from Red to Green? So only see the Green.
 
Upvote 0 Downvote
abbasia said:
That worked! Thanks so much. I hope it's not too much to ask but is it possible to make it plot the last state? By last state I mean the trailing stop dots moving from Red to Green? So only see the Green.
Click to expand...

that should be doable, but that will be more complicated, more so than i can type out on my cell. i'm moving my office around and will be a couple days till i get my computer set up.

my idea,
. make a counter that increments on the 1st bar of each color change.
. find max count of colors (on last bar)
..set a variable true during bars that = the max count.
..plot points when var is true
 
Upvote 0 Downvote
halcyonguy said:
that should be doable, but that will be more complicated, more so than i can type out on my cell. i'm moving my office around and will be a couple days till i get my computer set up.

my idea,
. make a counter that increments on the 1st bar of each color change.
. find max count of colors (on last bar)
..set a variable true during bars that = the max count.
..plot points when var is true
Click to expand...

Thanks for your reply. Let me give it a try. But you happened to come up with it sooner than I do; please share your new code. Thank you!
 
Upvote 0 Downvote
abbasia said:
Thanks for your reply. Let me give it a try. But you happened to come up with it sooner than I do; please share your new code. Thank you!
Click to expand...


had an idea and wrote it out. maybe this will work...

Code: 
# make a counter that increments on the 1st bar of each buy/sell color change.
def bn = barnumber();
def bs_cnt = if bn == 1 then 1
else if state != state[1] then bs_cnt[1] + 1
else bs_cnt[1];

# find max count of colors
def maxcnt = highestall(bs_cnt);

# set a variable true during bars that = the max count.
def t = if bs_cnt == maxcnt then 1 else 0;

# plot points when var is true
plot TrailingStop = if t then trail else double.nan;
 
Upvote 0 Downvote
halcyonguy said:
had an idea and wrote it out. maybe this will work...

Code: 
# make a counter that increments on the 1st bar of each buy/sell color change.
def bn = barnumber();
def bs_cnt = if bn == 1 then 1
else if state != state[1] then bs_cnt[1] + 1
else bs_cnt[1];

# find max count of colors
def maxcnt = highestall(bs_cnt);

# set a variable true during bars that = the max count.
def t = if bs_cnt == maxcnt then 1 else 0;

# plot points when var is true
plot TrailingStop = if t then trail else double.nan;
Click to expand...

Unfortunately, it didn't. Same problem as my original code with the state machine. It doesn't plot TrailingStop at all.
 
Upvote 0 Downvote
halcyonguy said:
had an idea and wrote it out. maybe this will work...

Code: 
# make a counter that increments on the 1st bar of each buy/sell color change.
def bn = barnumber();
def bs_cnt = if bn == 1 then 1
else if state != state[1] then bs_cnt[1] + 1
else bs_cnt[1];

# find max count of colors
def maxcnt = highestall(bs_cnt);

# set a variable true during bars that = the max count.
def t = if bs_cnt == maxcnt then 1 else 0;

# plot points when var is true
plot TrailingStop = if t then trail else double.nan;
Click to expand...

Interestingly, it looks like someone did the same thing for PSAR. I mean it only plots the last state. We just have to do it for the ATR Volatility Stop. I tried to copy but still doesn't work. Something is missing...

https://usethinkscript.com/threads/...-labels-charts-for-thinkorswim.515/post-13981
 
Upvote 0 Downvote
abbasia said:
Unfortunately, it didn't. Same problem as my original code with the state machine. It doesn't plot TrailingStop at all.
Click to expand...

this works , plots just the most recent stop points

i had to fix this line in post6
,.. def maxcnt = highestall(bs_cnt);
it wasn't right. it found the highest barnumber, but not the one with prices.


Code: 
# atr_stop_just_last_02

#https://usethinkscript.com/threads/atr-based-volatility-stop-script-not-working.12573/
#ATR-Based Volatility Stop Script not working

#input StopLabel = yes; #ATRStop Label is Stop value from yesterdays ATR calculation
input ATRPeriod = 8;
input ATRFactor = 3.0;
input firstTrade = {default long, short};
input averageType = AverageType.EXPONENTIAL;

Assert(ATRFactor > 0, "'atr factor' must be positive: " + ATRFactor);
def trueRange = TrueRange(high, close, low);
def loss = ATRFactor * MovingAverage(averageType, trueRange, ATRPeriod);

def state = {default init, long, short};
def trail;
def mclose;
switch (state[1]) {
case init:
    if (!IsNaN(loss)) {
        switch (firstTrade) {
        case long:
            state = state.long;
            mclose = close;
            trail = close - loss;
        case short:
            state = state.short;
            mclose = close;
            trail = close + loss;
    }
    } else {
        state = state.init;
        trail = Double.NaN;
        mclose = Double.NaN;
    }
case long:
    if (close > trail[1]) {
        state = state.long;
        mclose = Max(mclose[1], close);
        trail = Max (trail[1], mclose - loss);
    } else {
        state = state.short;
        mclose = close;
        trail = mclose + loss;
    }
case short:
    if (close < trail[1]) {
        state = state.short;
        mclose = Min(mclose[1], close);
        trail = Min(trail[1], mclose + loss);
    } else {
        state = state.long;
        mclose = close + 0;
        trail = mclose - loss;
    }
}

#AddLabel(StopLabel, "ATR Stop =" + Round(trail[1], 2), color = Color.BLUE);

# make a counter that increments on the 1st bar of each buy/sell color change.
def bn = barnumber();
def bs_cnt = if bn == 1 then 1
else if state != state[1] then bs_cnt[1] + 1
else bs_cnt[1];

# find max count of colors
def maxcnt = HighestAll(if !isnan(close) then bs_cnt else 0);
# set a variable true during bars that = the max count.
def t = if bs_cnt == maxcnt then 1 else 0;
# plot points when var is true
plot TrailingStop = if t then trail else Double.NaN;
#plot TrailingStop = trail;

addchartbubble(0, low*0.99,
state + "\n" +
bs_cnt + "\n" +
maxcnt + "\n" +
t
, color.yellow, no);

TrailingStop.SetPaintingStrategy(PaintingStrategy.POINTS);
TrailingStop.SetLineWeight(lineWeight = 3);
TrailingStop.DefineColor("Buy", GetColor(5));
TrailingStop.DefineColor("Sell", GetColor(1));
TrailingStop.AssignValueColor(if state == state.long
then TrailingStop.Color("Sell")
else TrailingStop.Color("Buy"));

# Alerts:
def VStopBull = state[1] == state.short and state == state.long;
def VStopBear = state[1] == state.long and state == state.short;

def VStopLong = VStopBull and (close is greater than TrailingStop);
def VStopShort = VStopBear and (close is less than TrailingStop);

# BLOCK CODE BELOW
input UseAlerts = {false, default true};
input AlertSound = {"Bell", "Chimes", default "Ding", "NoSound", "Ring"};
Alert(VStopBull and UseAlerts, "VStop Transition Bull", Alert.BAR, Sound.Ding);
Alert(VStopBear and UseAlerts, "VStop Transition Bear", Alert.BAR, Sound.Ding);
#
 
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