Google Translation------------------------------------------------------------------------------------------------------------------------------------------
If the closing price is higher than the opening price, the volume is positive and reverse.
If the closing price is smaller than the opening price, the volume is negative and their defined period
It is an indicator that I thought that I would like to see how the shape changes compared to the price chart
when the sum of is calculated.
The white line is the sum of the output and the light blue line is the white line ema .

In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.