In this tutorial, we will learn about the AddChartBubble() function in thinkScript with the help of examples.
Contents
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AddChartBubble() Overview
The AddChartBubble() function adds a text bubble to the specified location when a defined condition in your script is true.
Syntax of AddChartBubble()
AddChartBubble (time condition, price location, text, color, boolean up);
AddChartBubble() parameters
- Time condition: Specifies the circumstances under which the bubble will appear.
- Price location: Determines the price at which the bubble’s tip is visible.
- Text: Specifies the text that will appear in the bubble.
- Color: Assign a custom color to the bubble.
- Boolean up: Sets the bubble’s display position, either above or below the price location.
Display basic text bubble
Let’s begin by placing a bubble above each green bar that reads, “Green Candle.”
AddChartBubble(close > open, high, "Green Candle", color.green, yes);
Break text into multiple lines
If your bubble contains lots of text, you can break them down into several lines using \n.
# Bearish Engulfing Candles
input length = 20;
input trendSetup = 3;
def BodyMax = Max(open, close);
def BodyMin = Min(open, close);
def IsEngulfing = BodyMax > BodyMax[1] and
BodyMin < BodyMin[1];
def IsWhite = open < close;
def IsBlack = open > close;
def IsPrevDoji = IsDoji(length)[1];
plot Bearish = IsAscending(close, trendSetup)[1] and
(IsWhite[1] or IsPrevDoji) and
IsBlack and
IsEngulfing;
# Display Engulfing Candles as Chart Bubble
AddChartBubble(Bearish, high, "This is a bearish Engulfing candle\nThis is the second line\nThis is the third line ", color.white, yes);
AddChartBubble at a specific time
Want to display a chart bubble at a specific time using thinkScript?
Sure, Let’s do it!
addchartbubble(secondstilltime(1145)==0, high, "Lunch break", getcolor(2), yes);
In the example above, the AddChartBubble() function fires a text bubble at 11:45 ET.
The following section contains code examples from the folks over at the thinkScript OneNote Community. You can find all of the snippets below under the AddChartBubble section.
Chart Bubble Future Date and Time
The AddChartBubble() function can also be used to add a text bubble to a given date.
#StudyName: Chart Bubble Future Date and Time
#Description: Plots a chart Bubble using a user input date and time.
#Author: DMonkey
#Requested By: Slash
# Ver 1 Date 10.10.2018
# Lounge Notes:
# 11:24 DMonkey: the future bar has no value, so using a dynamic offset to locate bubble location......
# 15:15 DMonkey: Not sure what. Your after slash. What I gave you plots a chart bubble at a user input date and time in the future as requested. If that bar is in the expansion area it will plot. The axis is the current floating close price. You can add another input and to use a user input if you want to plot at a different price but logically if the bubble is floating with the current close it makes sense to me.
#inputs
input date = 20181010;
input time = 1100;
#Defs
def c = close;
def bar = BarNumber();
def na = double.nan;
def Lastbar = HighestAll(
if !IsNaN(c[-1])
then bar
else na);
def date2 = DaysFromDate(date) == 0 ;
def time2 = secondsFromTime(time) == 0;
def a = highestall(
if time2 && date2
then bar
else na);
def b = if bar == a then getvalue(c, "dynamic offset" = a - lastbar) else na;
#Plot Management
AddVerticalLine(visible = bar == a);
AddChartBubble("time condition" = a, "price location" = b, text = "Words Here");
### End Code ###
Stacked Labels
# Stacked Labels Substitute
# Nube
# 10.28.18
#
# inputs
input location = {default Left, Right};
# variables
def p = HL2;
def hh = HighestAll(high);
def ll = LowestAll(low);
def mid = (hh + ll) / 2;
def x;
def y;
Switch (location) {
Case Left:
x = Barnumber() == 1;
y = if p > mid
then ll
else hh;
Case Right:
x = BarNumber() == HighestAll(BarNumber());
y = hh;
}
# plots
AddChartBubble(x, y,
" blah, blah, blah,\nnatter, natter.",
Color.Light_Gray, p > mid);
AddChartBubble(x, y,
" blah, blah, blah,\nnatter, natter.",
Color.Light_Gray, p > mid);
Bubble with Date and Price
# BubbleWithDateAndPrice_Nube
# portions of the code from Text and Color code from StanL's treebase
# inputs
input barsBack = 0;
input price = close;
# throws an error symbol at top left of chart when condition is false. click on the error symbol to view the error message
# condition , "text"
assert(barsBack >= 0, "''bars back'' cannot be negative ");
# variables
def bn = BarNumber();
def month = GetMonth();
def monthDay = GetDayOfMonth(GetYYYYMMDD());
def currentBar = HighestAll(if !IsNaN(price)
then bn
else Double.NaN);
# StanL Bubble
# X Axis , Y axis
AddChartBubble(bn == currentBar - barsBack, price,
# This section for text
"Date: " + month + "/" + monthday + (
if price == close
then " Close: $"
else if price == open
then " Open: $"
else if price == low
then " Low: $"
else if price == high
then " High: $"
else if price == OHLC4
then " OHLC4 $"
else if price == HLC3
then " HLC3 $"
else " Value: " )+ price,(
# this section for color
if price == close
then color.cyan
else if price == open
then color.pink
else if price == low
then color.yellow
else if price == high
then Color.White
else if price == OHLC4
then Color.Dark_Orange
else if price == HLC3
then Color.Magenta
else color.Plum), yes);
Happy testing!
On an intraday chart, I’d like to have a single AddChartBubble() representing a condition that’s based on the DAILY timeframe. So far all I can seem to accomplish is getting a bubble to show for each hour which is not ideal since there will likely be a different bubble for each day. I recognize this is done somehow in the second part of the AddChartBubble() function but I sure can’t seem to figure it out! Any tips? Thanks!