I modified "#SpudFibo.mq4" to make "Fibo Fan Day Range.mq4".
It's a Fibonacci Fan of the previous day high and low range.
It's a range from the first candle of the day to the last candle of the day.
It's not really from the highest candle to the lowest candle.

It's more like a Gann Fan if you draw from the first candle of the day to the last candle of the day.

On the attached EURUSD chart, we see that there are two high candles and two low candle.
We don't know how to draw which candle to which. The angles will be different.

For the highest candle to the lowest candle, you have to use "Fibonacci_Fan.mq4" at:
viewtopic.php?p=1295400332#p1295400332

Also check out #SpudFibo.mq4 at:
viewtopic.php?p=1295399889#p1295399889