Help with SetHiding In ThinkOrSwim

[vanczos]

I can't seem to find a way to dynamically hide parts of a plot. I essentially want to create a discontinuous line plot that only shows data points if they meet a condition. As far as I can tell, SetHiding() applies broadly to the entire plot, so is there any way to paint data points only if they meet a condition?

i.e. if I have a = {0, 0, 4, 5, 6, 0, 1, 3, 0, 2, 6}, I only want to display a[2] through a[4] and a[6] through a[7] based on criteria from a separate array b.

Thank you!

EDIT: After some more thought, perhaps people accomplish the look of "separate" lines by making the plot color the same as the background color? I guess I assumed the time dividers would conflict but I didn't consider the order things are painted.

In case anyone has the same problem, I hid the points by setting their color to the background color (which can be done dynamically on a point-by-point basis, which was my problem in the first place). The rgb color code (22, 22, 22) is the default background of ToS.

plot_name.AssignValueColor(if show_condition_is_true then color.red else CreateColor(22,22,22));

 

[Joshua]

This will hide an average within a certain distance from the chart's right edge should the condition be met. The average will still appear far off to the left, but if you pick a large enough number, you will have to scroll back to see it, and it shouldn't interfere visually with recent prices.

Its not perfect, but in regard to sethiding() not accepting ohlc data, and the typical work-arounds being laggy or forcibly invoking the once_per_bar throttle, I believe this would be the most efficient method.

If you don't want to wait to see the effect, flip the ">" sign back and forth.

input EdgeDistance = 200;

def EdgeCount =
if !EdgeCount[1] and isNaN(close[-EdgeDistance]) then 1
else if isNaN(close[-EdgeDistance]) then EdgeCount[1] + 1
else no
;

def EdgeRem = EdgeDistance - EdgeCount;
def SMA = SimpleMovingAvg(close,20);

def eSMA = GetValue(SMA,-EdgeRem);
def eCls = GetValue(Close,-EdgeRem);

plot x = if EdgeCount and eCls > eSMA then Double.NaN else SMA;
x.setpaintingStrategy(paintingStrategy.POINTS);

plot y = SMA;

 

[BOOMERMANG]

i don't have an answer.
i don't think sethiding() can be used as you want.
i tried many variations, but didn't see any reliable outcomes, when variables were used in a condition, within sethiding( )

this is my test study. it has many variations of code lines that i tried.
most are disabled with #

# sethiding_var_00

# https://usethinkscript.com/threads/help-with-sethiding.14124/
#Help with SetHiding

def na = double.nan;
def bn = barnumber();

def lastbar = (!isnan(close) and isnan(close[-1]));

input price = close;
input length = 9;
input displace = 0;
input showBreakoutSignals = no;

def AvgExp = ExpAverage(price[-displace], length);

#def AvgExp2 = ExpAverage(price, 23);
#plot zz = avgexp2;


# move before plot. same
# tried [0] and [1] .  same  dont work.
#def Avg_HIDE = if close(pricetype.last) >= AvgExp then 1 else 0;
def Avg_HIDE = if close >= AvgExp[0] then 1 else 0;
#def Avg_HIDE = if open >= AvgExp[0] then 1 else 0;
#def Avg_HIDE = if open >= 42 then 1 else 0;

#def Avg_HIDE = if AvgExp > 42 then 1 else 0;



# this works
#plot zavgexp = if close >= avgexp then na else avgexp;

plot zavgexp = avgexp;
zAvgExp.SetDefaultColor(GetColor(1));
#def Avg_HIDE = if close(pricetype.last) >= AvgExp then 1 else 0;

#def Avg_HIDE = if close >= AvgExp[0] then 1 else 0;
# doesnt work
zAvgExp.SetHiding(Avg_Hide);

#  put cond in function,  same. dont work
#zAvgExp.SetHiding( close >= AvgExp[0] );

#zAvgExp.SetHiding( close >= AvgExp2[0] );

#zAvgExp.SetHiding( close[1] >= 44 );
#plot yy = 44;


# all line gone
#zAvgExp.SetHiding( bn > 44 );
# all line visible
#zAvgExp.SetHiding( bn < 44 );

# is it determined by value at last bar ??


# shows line
#zAvgExp.SetHiding(0);


#def cnt = if (bn %4 == 0) then 1 else 0;
#zAvgExp.SetHiding(cnt);
#plot t = cnt;
#t.SetPaintingStrategy(PaintingStrategy.VALUES_ABOVE);


addchartbubble(1 and lastbar, low*0.996,
 close + "\n" +
 AvgExp[0] + "\n" +
 (close >= AvgExp[0]) + "\n" +
 Avg_HIDE
, (if Avg_HIDE then color.yellow else color.gray), no);


plot UpSignal = price crosses above AvgExp;
plot DownSignal = price crosses below AvgExp;
UpSignal.SetHiding(!showBreakoutSignals);
DownSignal.SetHiding(!showBreakoutSignals);
UpSignal.SetDefaultColor(Color.UPTICK);
UpSignal.SetPaintingStrategy(PaintingStrategy.BOOLEAN_ARROW_UP);
DownSignal.SetDefaultColor(Color.DOWNTICK);
DownSignal.SetPaintingStrategy(PaintingStrategy.BOOLEAN_ARROW_DOWN);

#

--------------

here is something i did, that doesn't plot a line if it crosses some level.
a fold loop runs on bar#1 to read future values, then determine to plot a line or not.

https://usethinkscript.com/threads/...remove-it-once-price-hits-it.5257/#post-75706

Thank you for the reply! I too tried, tried, and tried... couldn't find anything that works. I think you're right its just not possible with '"sethiding".

This will hide an average within a certain distance from the chart's right edge should the condition be met. The average will still appear far off to the left, but if you pick a large enough number, you will have to scroll back to see it, and it shouldn't interfere visually with recent prices.

Its not perfect, but in regard to sethiding() not accepting ohlc data, and the typical work-arounds being laggy or forcibly invoking the once_per_bar throttle, I believe this would be the most efficient method.

If you don't want to wait to see the effect, flip the ">" sign back and forth.

input EdgeDistance = 200;

def EdgeCount =
if !EdgeCount[1] and isNaN(close[-EdgeDistance]) then 1
else if isNaN(close[-EdgeDistance]) then EdgeCount[1] + 1
else no
;

def EdgeRem = EdgeDistance - EdgeCount;
def SMA = SimpleMovingAvg(close,20);

def eSMA = GetValue(SMA,-EdgeRem);
def eCls = GetValue(Close,-EdgeRem);

plot x = if EdgeCount and eCls > eSMA then Double.NaN else SMA;
x.setpaintingStrategy(paintingStrategy.POINTS);

plot y = SMA;

You are the man!!! This is actually exactly what I'm looking for. I'm only using the last 20bars for trading so the 200 is more than enough to give me a clean picture. Thank you again so so so much! This community never ceases to amaze me day in and day out.

 

[SteveDay]

After some experimentation it appears that there is a limitation on the SetHiding() function.

Strangely, the SetHiding() function only works if the condition compares constants. If you try to compare values calculated within the script (such as if an oscillator is below an EMA, then it doesn't work .. at least for me, on 2023/02/27 @ 5pm CST).

 

[armybender]

SetHiding is like unselecting the checkbox to show a study. It is designed for a one-time on/off switch.

If you want to dynamically hide studies, you could consider having your study plot show Double.NaN when the condition is true. This would mean, however, that you would need to have the data for your plot stored in a def variable so you could say: if condition then plot = Double.NaN else plot definition.

This would only hide it on the chart for some bars, however, so you'd just have a study with gaps rather than a fully hidden study. not sure if that meets your needs.

 

[SteveDay]

Normally that would work, but when using gradient colors it's not an option as it completely screws up the gradient. (Which itself is very poorly implemented... If you fade from something like Light-Blue to Orange it starts producing Green as they cross )

What is the consensus - should this be reported as a bug?

- My thought is yes, based on the following reasons;

1) If we're expected to use NaN to hide plots anyway, then why add a SetHiding function?

2) The SetHiding description makes it appear as though it's for dynamically hiding plots...

SetHiding ( double condition);   

Description
Controls visibility of a plot depending on a condition. If this condition is true, the plot is hidden; otherwise the plot is visible.

... Since when are "conditions" only allowed to be between constants?

3) Plus, the example given on the. SetHiding function's page is demonstrating dynamic hiding using GetAggregationPeriod. The key difference being GetAggregationPeriod() is one of the few functions that returns a pure constant.

As is, the SetHiding function can only be used for "dynamically" hiding plots based on things that don't change once the study has started (unless settings somewhere are changed).

Personally, I find the constant/non-constant restrictions to be an absolute ("constant") pain.

Sorry for the rant (and bad pun).

 

[Ivan Felipe]

setHiding doesn´t work with a condition

 

[useThinkScript]

setHiding doesn´t work with a condition

You are correct.
Read through this thread to see other members workarounds:
https://usethinkscript.com/threads/help-with-sethiding-in-thinkorswim.14124/