Drawing Line Charts in MT4
This is the fifth option on the charts menu within the MT4 platform. The line chart button shown below.
The line charts aren't popular and aren't used by many traders as these don't show a lot of information that's useful for technical analysis. This option will only draw a price line which joins the close prices of a currency pair leaving out all other data.
When compared to candlesticks that will show the Opening, the Closing, the Low & the High of price, then the line chart leaves out a lot of information in its graphical representation of market movement.
Most of this data is useful & used by most traders when using technical analysis technique therefore the candles are preferred because they provide more information for technical analysis.
For this reason this charting method is not popular among technical traders and therefore not widely used.