# amibroker

### How to plot daily High and Low on intraday chart

The AFL offers a set of time-frame functions which allow to use multiple intervals within a single formula (the topic is explained in details in the following tutorial chapter: http://www.amibroker.com/guide/h_timeframe.html)

In situations, where we do not need to calculate any indicators based on higher interval data, but rather just read OHLC, V or OI arrays – TimeFrameGetPrice is the most convenient function to use.

To plot daily High and Low levels we just need to read the respective arrays calling: TimeFrameGetPrice(“H”, inDaily ) – the first argument specifies the array we want to read, the second argument defines the interval we are reading data from. As with any other TimeFrame functions – we can only read data from higher intervals, so it is possible to read daily data when we work with 1-minute quotes, but not the other way round.

Here is a sample formula which draws daily high and low in the intraday chart:

`Plot( Close, "Close", colorDefault, styleBar );Plot( TimeFrameGetPrice("H", inDaily ), "day high", colorGreen, styleStaircase | styleThick);Plot( TimeFrameGetPrice("L", inDaily ), "day low", colorRed, styleStaircase | styleThick)`

TimeFrameGetPrice() functions allow also to easily shift the reading by N-bars of the higher interval if we specify that in 3rd argument of the function, so calling TimeFrameGetPrice( “H”, inDaily, -1 ) will return the high of previous day.

The following code draws high / low of previous day on top of the intraday chart:

`Plot( Close, "Close", colorDefault, styleBar );hlstyle = styleStaircase | styleThick;Plot( TimeFrameGetPrice( "H", inDaily, -1 ), "Prev High", colorGreen, hlstyle );Plot( TimeFrameGetPrice( "L", inDaily, -1 ), "Prev Low", colorRed, hlstyle )`