The indicator plots the vertical section for each bar between the Open and Close prices.
The DRAW_HISTOGRAM2 drawing style can be used for a drawing in a separate window and main chart window. It doesn't plot empty values, the empty indicator values must be specified explicitly. Two data buffers are needed for the DRAW_HISTOGRAM2 style.
The color, width and style of the histogram changed randomly each N ticks. In the OnInit() function, it chooses a day of the week (invisible_day), the indicator values of the bars of this week day will be filled with empty values (PLOT_EMPTY_VALUE=0):
//--- define empty value PlotIndexSetDouble(plot_index_DRAW_SECTION,PLOT_EMPTY_VALUE,0);The Drawing Styles in MQL5.
Translated from Russian by MetaQuotes Software Corp.
Original code: https://www.mql5.com/ru/code/333
The DRAW_HISTOGRAM drawing style is used for plotting the values of the indicator's buffer as a histogram.DRAW_SECTION
The DRAW_SECTION drawing style is used for plotting the values of the indicator's buffer as a sections.
The DRAW_CANDLES drawing style plots the candles using the values of 4 indicator buffers with Open, High, Low and Close prices.DRAW_FILLING
The DRAW_FILLING drawing style plots the filled area between the values of two indicator buffers. In fact, it plots two lines and fills the area between them with the specified color.