Connection between Indicator Properties and Corresponding Functions

Every custom indicator has numerous properties, some of which are obligatory and are always positioned at the beginning of description. They are the following properties:

• indication of a window to plot the indicator – indicator_separate_window or indicator_chart_window;
• number of indicator buffers – indicator_buffers;
• number of plots of the indicator – indicator_plots.
• Also there are other properties that can be set both through preprocessor directives and through functions intended for custom indicator creation. These properties and corresponding functions are described in the following table.

  Directives for properties of indicator subwindow	Functions of IndicatorSet…() type	Description of the adjusted property of the subwindow
  indicator_height	IndicatorSetInteger(INDICATOR_INDICATOR_HEIGHT, nHeight)	The fixed value of the subwindow height
  indicator_minimum	IndicatorSetDouble(INDICATOR_MINIMUM, dMaxValue)	Minimal value of the vertical axis
  indicator_maximum	IndicatorSetDouble(INDICATOR_MAXIMUM, dMinValue)	Maximal value of the vertical axis
  indicator_levelN	IndicatorSetDouble(INDICATOR_LEVELVALUE, N-1, nLevelValue)	Vertical axis value for N level
  no preprocessor directive	IndicatorSetString(INDICATOR_LEVELTEXT, N-1, sLevelName)	Name of a displayed level
  indicator_levelcolor	IndicatorSetInteger(INDICATOR_LEVELCOLOR, N-1, nLevelColor)	Color of N level
  indicator_levelwidth	IndicatorSetInteger(INDICATOR_LEVELWIDTH, N-1, nLevelWidth)	Line width for N level
  indicator_levelstyle	IndicatorSetInteger(INDICATOR_LEVELSTYLE, N-1, nLevelStyle)	Line style for N level
  Directives for plotting properties	Functions of PlotIndexSet…() type	Description of the adjusted property of a plot
  indicator_labelN	PlotIndexSetString(N-1,PLOT_LABEL,sLabel)	Short name of the number N plot. It is displayed in DataWindow and in the pop-up tooltip when pointing the mouse cursor over it
  indicator_colorN	PlotIndexSetInteger(N-1, PLOT_LINE_COLOR, nColor)	Line color for N plot
  indicator_styleN	PlotIndexSetInteger(N-1, PLOT_LINE_STYLE, nType)	Line style for N plot
  indicator_typeN	PlotIndexSetInteger(N-1, PLOT_DRAW_TYPE, nType)	Line type for N plot
  indicator_widthN	PlotIndexSetInteger(N-1, PLOT_LINE_WIDTH, nWidth)	Line width for N plot
  Common indicator properties	Functions of IndicatorSet…() type	Description
  no preprocessor directive	IndicatorSetString(INDICATOR_SHORTNAME, sShortName)	Sets the convenient short name of the indicator that will be displayed in the list of indicators (opened in the terminal by pressing Ctrl+I).
  no preprocessor directive	IndicatorSetInteger(INDICATOR_DIGITS, nDigits)	Sets required accuracy of display of indicator values - number of decimal places
  no preprocessor directive	IndicatorSetInteger(INDICATOR_LEVELS, nLevels)	Sets number of levels in the indicator window
  indicator_applied_price	No function, the property can be set only by the preprocessor directive.	Default price type used for the indicator calculation. It is specified when necessary, only if OnCalculate() of the first type is used. The property value can also be set from the dialog of indicator properties in the “Parameters” tab - “Apply to”.

It should be noted that numeration of levels and plots in preprocessor terms starts with one, while numeration of the same properties at using functions starts with zero, i.e. the indicated value must be by 1 less than that indicated for #property.

There are several directives, for which there are no corresponding functions: