Volume CVD and Open Interest Heatmap

Taking Volume and Open Interest data to the next level of visualization I created a 'heatmap'. The indicator uses a colour gradient and plots boxes from the source candle to the current candle with one of the following data sources:

- Volume - the total volume of transactions, buys and sells
- Up Volume - the total volume from buys only
- Down Volume - the total volume from sells only
- Up/Down Volume (Net) - the difference in the Buy Volume and Sell Volume
- Cumulative Delta - the sum of the up/down volume for the previous 14 bars
- Cumulative Delta EMA - a smoothed average of the sum of the up/down volume for the previous 14 bars, over a 14 period EMA
- Open Interest - a user defined ticker, whose value is added to the plot, while this is designed to be used with Open Interest tickers, you can actually choose any ticker you want, perhaps you want to see DXY while charting Bitcoin!

You can define the lookback period, though you should make sure your timeframe for volume source data, is high enough to accommodate the lookback. TradingView will only fetch 5000 candles worth of data, so at 1 min volume data, you can only lookback 83 hours.

While similar, Volume and Open Interest are not the same. To me the simplest explanation is Volume shows the trades that have been executed and the buy/sell direction, while Open Interest shows the value of open trades that are yet to be completed.

Volume shows strength, sentiment and volatility .

Open Interest does not show direction, but does indicate momentum and liquidity in the market.

With this novel way of visualizing these, you can also now determine where all that liquidity and positions came from and therefore might have resting liquidity below.