Anchored VWAP

Welcome to the first episode of “How to Thinkscript”. We are TOSIndicators.com, home of the Volatility Box, the most robust ThinkOrSwim indicator based on statistical models built for large institutions and hedge funds.

Today, we’re going to walk you through how to build an Anchored VWAP indicator for ThinkOrSwim.

The Anchored VWAP is particularly useful if you’d like to anchor to either a specific time intra-day when price action reversed, their last earnings date, the Dec. 2018 lows, etc. You get the point.

We also use the Anchored VWAP to build the V-Score indicator here, if you'd like to also watch that tutorial. The V-Score helps you to turn the Anchored VWAP indicator into a historical visual plot of price reversions back to the mean, through the eyes of standard deviation. If that sounds complex, don't worry - we break it down for you here.

Anchored VWAP ThinkOrSwim Video Tutorial

If you’d like to skip the tutorial and start playing with the indicator right away, it’s available to download for free below.

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Building the Anchored VWAP Using ThinkOrSwim Code

Let’s start the process of building the Anchored VWAP for ThinkOrSwim.

First, we need to create a new study in ThinkOrSwim, which is another word for an indicator file.

Click the studies icon above the charts, and then click create.

Let’s give our study a unique name at the top. We'll call our study "TI_AnchoredVWAP"

Now we need to define the raw formula for the VWAP indicator, and here, we can use the built-in ThinkOrSwim VWAP study.

plot anchoredVWAP = TotalSum(if postAnchorDate and postAnchorTime then ((high+low+close)/3)*(volume) else 0)/TotalSum(if postAnchorDate and postAnchorTime then volume else 0);

Now, let’s add in the anchor inputs for the anchor date and time.

input anchorDate = 20190612;
input anchorTime = 0930;

And keep in mind, all of the time stamps in thinkScript are in Eastern Standard Time format.

Now, we need to create a condition that tests if we have passed that anchor date and time in history.

def postAnchorDate = if GetYYYYMMDD()  >= anchorDate then 1 else 0;
def postAnchorTime = if SecondsFromTime(anchorTime) >= 0 then 1 else 0;

So let’s do a quick recap here.

In the first function for our Anchored VWAP, “postAnchorDate” checks to see whether or not we are after a particular date.

The second function, “postAnchorTime” repeats the same exercise, but using our inputted time.

We need to now intertwine those two functions into the Anchored VWAP code, to know to calculate the VWAP if and only if the two conditions are true.

Let’s update our Anchored VWAP indicator code:

plot anchoredVWAP = TotalSum(if postAnchorDate and postAnchorTime then ((high+low+close)/3)*(volume) else 0)/TotalSum(if postAnchorDate and postAnchorTime then volume else 0);

And that’s it!

Formatting the Anchored VWAP Indicator

If you’d like to build in the formatting that we have in our tutorial into the indicator code, here is the thinkScript for formatting:

anchoredVWAP.setStyle(Curve.Firm);
anchoredVWAP.SetLineWeight(3);
anchoredVWAP.SetDefaultColor(Color.Cyan);

That results in the default Anchored VWAP indicator plot line always look like this:

Download the Anchored VWAP for ThinkOrSwim

That's the end of the tutorial. Hopefully through that, you learned how to very quickly, and easily, put together your own Anchored VWAP indicator for ThinkOrSwim.

If you'd like to see some examples of the indicator in action and being used, we do so towards the end of the tutorial video!

Click the button below to download the Anchored VWAP Indicator for ThinkOrSwim