Is there a way to draw a dashed line on a MQL5 chart that contains two colors?

External question — Stack Overflow Stack Exchange Author: Johnny Sandaire Original post: https://stackoverflow.com/questions/79669387 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I have an indicator that draws dashed lines in red or blue as needed for support and resistance levels. However, I have a difficult time seeing the lines on the black background charts, so I would like to change the lines to a dashed red-white or dashed blue-white line instead. I accomplished this by creating two separate indicators. One draws the support and resistance levels utilizing a white solid line. Then, I loaded the white line indicator onto the chart first; followed by loading the dashed red and blue line indicator. The results were much better visually. Therefore, instead of using two separate indicators, I would like to have one indicator that is able to generate the dashed multicolored lines. I tried to add two blocks of a for loop to overlay the lines, but that does not work. MQL5 prioritizes the last block that ran, and I can only see one set of lines instead. Is it possible for me to render these lines on the charts with a single indicator? This is my current for loop that is drawing the red, blue, and white lines. int OnInit() { ArrayResize(sr_levels, 6); // Resize to 6 levels ArrayResize(aas, 6); // Resize to 6 levels ArrayInitialize(sr_levels, 0); ArrayInitialize(aas, true); // Initialize buffers SetIndexBuffer(0, SupportBuffer1, INDICATOR_DATA); SetIndexBuffer(1, SupportBuffer2, INDICATOR_DATA); SetIndexBuffer(2, SupportBuffer3, INDICATOR_DATA); SetIndexBuffer(3, ResistanceBuffer1, INDICATOR_DATA); SetIndexBuffer(4, ResistanceBuffer2, INDICATOR_DATA); SetIndexBuffer(5, ResistanceBuffer3, INDICATOR_DATA); for (int i = 0; i < 6; i++) { PlotIndexSetString(i, PLOT_LABEL, (i < 3 ? "Support " : "Resistance ") + IntegerToString(i % 3 + 1)); PlotIndexSetInteger(i, PLOT_DRAW_TYPE, DRAW_LINE); PlotIndexSetInteger(i, PLOT_LINE_COLOR, clrWhite); // Support = Blue, Resistance = Red PlotIndexSetInteger(i, PLOT_LINE_STYLE, STYLE_SOLID); PlotIndexSetInteger(i, PLOT_LINE_WIDTH, 1); } // Set properties for each plot for (int i = 0; i < 6; i++) { PlotIndexSetString(i, PLOT_LABEL, (i < 3 ? "Support " : "Resistance ") + IntegerToString(i % 3 + 1)); PlotIndexSetInteger(i, PLOT_DRAW_TYPE, DRAW_LINE); PlotIndexSetInteger(i, PLOT_LINE_COLOR, clrWhite); // Support = Blue, Resistance = Red PlotIndexSetInteger(i, PLOT_LINE_COLOR, (i < 3) ? clrBlue : clrRed); // Support = Blue, Resistance = Red PlotIndexSetInteger(i, PLOT_LINE_STYLE, STYLE_DASH); PlotIndexSetInteger(i, PLOT_LINE_WIDTH, 1); } ChartSetInteger(0, CHART_EVENT_MOUSE_MOVE, 1); // Enable mouse move events return(INIT_SUCCEEDED); } I would like to wind-up with the following: Expected outcome

External answer — Stack Overflow Stack Exchange Author: Forex Coder Original post: https://stackoverflow.com/a/79670369 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. Hello you can use an array to specify the styles each plot acquires. #property indicator_chart_window #property indicator_buffers 6 #property indicator_plots 6 double SupportBuffer1[]; double SupportBuffer2[]; double SupportBuffer3[]; double ResistanceBuffer1[]; double ResistanceBuffer2[]; double ResistanceBuffer3[]; /* list of styles colors and widths these will be accessed in the setup loops the setup uses i%3 which is the remnant of the division i/3 so the first plot will go 0/3 -> remnant 0 it will read styles[0],colors[0],widths[0] the 2nd plot will go 1/3 -> remnant 1 it will read styles[1]... the 3rd plot will go 2/3 -> remnant 2 it will read styles[2]... the 4th plot will go 3/3 -> remnant 0 it will read styles[0]... */ ENUM_LINE_STYLE styles[]={STYLE_SOLID,STYLE_DASH,STYLE_DASHDOTDOT}; color colors[]={clrWhite,clrCrimson,clrRoyalBlue}; int widths[]={2,2,2}; int OnInit() { // Initialize buffers SetIndexBuffer(0, SupportBuffer1, INDICATOR_DATA); SetIndexBuffer(1, SupportBuffer2, INDICATOR_DATA); SetIndexBuffer(2, SupportBuffer3, INDICATOR_DATA); SetIndexBuffer(3, ResistanceBuffer1, INDICATOR_DATA); SetIndexBuffer(4, ResistanceBuffer2, INDICATOR_DATA); SetIndexBuffer(5, ResistanceBuffer3, INDICATOR_DATA); for (int i = 0; i < 6; i++) { PlotIndexSetString(i, PLOT_LABEL, (i < 3 ? "Support " : "Resistance ") + IntegerToString(i % 3 + 1)); PlotIndexSetInteger(i, PLOT_DRAW_TYPE, DRAW_LINE); PlotIndexSetInteger(i, PLOT_LINE_COLOR, colors[i%3]); // Support = Blue, Resistance = Red PlotIndexSetInteger(i, PLOT_LINE_STYLE, styles[i%3]); PlotIndexSetInteger(i, PLOT_LINE_WIDTH, widths[i%3]); } return(INIT_SUCCEEDED); } int OnCalculate(const int32_t rates_total, const int32_t prev_calculated, const datetime &time[], const double &open[], const double &high[], const double &low[], const double &close[], const long &tick_volume[], const long &volume[], const int32_t &spread[]) { for(int i=prev_calculated;i<rates_total;i++){ int target=i-i%20; SupportBuffer1[i]=high[target]; SupportBuffer2[i]=high[target]; SupportBuffer3[i]=high[target]; ResistanceBuffer1[i]=low[target]; ResistanceBuffer2[i]=low[target]; ResistanceBuffer3[i]=low[target]; } return(rates_total); }

Is there a way to draw a dashed line on a MQL5 chart that contains two colors?

Is there a way to draw a dashed line on a MQL5 chart that contains two colors?

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