Patrick's Buy HistogramSet up a trailing stop at about 0. Look for the red dots.and that's a good point to enter a long trade.
Search in scripts for "Trailing stop"
QQE MT4QQE (Quantative Qualitative Estimation) MT4 Version by Roman Ignatov
Another indicator from MT4 to pinescript, from a google search i found the that the original author is unknown and its best used for volatile pairs /JPY
yellow line is a smoothed rsi,
 red line "slow trailing stop" is the ATR smoothing with a 14-periods wilders smoothing function that is multiplied by a factor of 4.236
Also big thanks to BlindFreddy, i used part of his supertrend indicator to make it work
Colored Volume Bars [LazyBear]Edgar Kraut proposed this simple colored volume bars strategy for swing trading. 
This is how the colors are determined: 
 - If today’s closing price and volume are greater than 'n' days ago, color today’s volume bar green. 
 - If today’s closing price is greater than 'n' days ago but volume is not, color today’s volume bar blue. 
 - Similarly, if today’s closing price and volume is less than 'n' days ago, color today’s volume bar orange. 
 - If today’s closing price is less than 'n' days ago but volume is not, color today’s volume bar red. 
Buy the green or blue volume bars, use a 1% trailing stop, and stand aside on red or orange bars. 
As you see, this is more for entry confirmation. I have not tested this on any instrument. 
You may have to tune the lookback period for your instrument. Default is 10. 
More info:  
"A color-based system for short-term trading" - www.traders.com
List of all my indicators:



