The daily open is one of the simplest and most watched reference prices. It splits the day into two halves: above the open the day is "bullish", below it the day is "bearish". Many intraday traders use it as a bias filter, as a support or resistance level and as a mean-reversion anchor: a large distance from the open often means an extended move.
This indicator draws the open of the current day (and optionally of several previous days) and writes next to it how many points the price is away from today's open. You no longer need to measure the distance with a ruler tool.
The lines are built only once at the start and when a new daily bar appears. On each tick only one label is updated, and only if its text actually changed, so the load on the terminal is minimal.
| Input | Default | Purpose |
|---|---|---|
| Daily open | ||
| InpDaysBack | 3 | Number of days to draw, including today (1 to 30) |
| InpExtendRight | true | Extend today's line to the right of the last bar |
| Line | ||
| InpLineColor | clrWhite | Color of the open lines |
| InpLineStyle | STYLE_DASH | Style of the open lines |
| InpLineWidth | 1 | Width of the open lines (1 to 5) |
| Distance label | ||
| InpShowLabel | true | Show the label with the open price and the distance |
| InpAboveColor | clrWhite | Label color when the price is above the open |
| InpBelowColor | clrGray | Label color when the price is below the open |
| InpLabelSize | 9 | Label font size (6 to 40) |

Fig. 1. DailyOpenLine on an H1 chart with default settings (black and white image per Code Base guidelines).
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