Horizontal line incorporated in indicator overlaid on main chart

Horizontal line incorporated in indicator overlaid on main chart

dare2
2012-09-14 18:53:18

I often like to overlay an indicator, such as ROC, on the main chart. When I do so, I use the indicators "own scale" setting. I have been unsuccessful though
in editing the formula to add a horizontal line at '0'. The horizontal line is placed at the price charts '0' line and not the ROC '0' value.

QuantShare
2012-09-15 09:46:26

Try this:

PlotCandleStick("Quotes", colorBrown|255|colorViolet|255|0, StyleOwnScale);

plot(roc(20), "", colorBlue, ChartLine, StyleSymbolNone);
plot(0, "", colorGreen, ChartLine, StyleSymbolNone);

dare2
2012-09-15 13:05:48

That works for price and roc, BUT the volume bars are now upside down with their base at the roc '0' line.

Darrell

dare2
2012-09-15 13:14:45

Actually that is okay with me as I will put volume in its own pane. Although it would be nice to have it in the main chart.

Darrell

QuantShare
2012-09-15 13:18:27

Replace the volume plot line by this:
Plot1(volume, -100, "Volume", "", colorLime|60, colorTransparent, colorTransparent, ChartStep, StyleOwnScale);

dare2
2012-09-15 13:28:39

The other thing I just noticed is that the price scale on the right has disappeared, and has been replace with the roc scale. The closing price does show on the right of the candlestick and the c, o, h, l show in the upper left of the main chart which is as it should be.

dare2
2012-09-15 13:30:03

Ignore my last message as I just got yours and will change the vol plot and see what that does.

dare2
2012-09-15 13:36:21

That worked as far as putting the volume bars back where they belong however the price scale on the right has disappeared, and has been replace with the roc scale. The closing price does show on the right of the candlestick and the c, o, h, l show in the upper left of the main chart which is as it should be.

dare2
2012-09-15 13:41:32

Another problem is that I no longer have the control over the volume bar's color. I tried 'updating dynamically' to change the colors to two colors and it seems to only let me have one color.

Darrell

QuantShare
2012-09-17 11:25:09

Best Answer

Here is another way to display ROC on main chart. However, instead of the zero line, you will see the ROC color changes from Green to Red.

PlotCandleStick("Quotes", colorBrown|255|colorViolet|255|0, StyleSymbolNone);
Plot(volume, "Volume", colorLime|55|colorLime|64|0, ChartBar, StyleOwnScale);

plot(roc(20), "", colorRed, ChartLine, StyleOwnScale);
UpdateColor(roc(20) > 0, colorGreen);

dare2
2012-09-17 12:37:58

Now that I like. Thank you.

Darrell

dare2
2012-09-17 12:54:58

Although I would rather have an ROC scale on the left and price scale on the right with a horizontal line corresponding to zero on the left scale.

Perhaps something could be done in a future edition of Quantshare.

Thanks again,
Darrell

QuantShare
2012-09-17 13:12:26

Yes, thank you for the suggestion.

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