How to create a formula

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How to create a formula

Updated on 2012-02-13 05:02:33

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A formula contains one or several indicators and functions. A formula is used to plot time-series on a chart, create composites/market indicators, screens or backtest trading systems.

A formula should be implemented using the QuantShare language.

To update a chart formula:

- Right click on a chart
- Select "Edit Formula" to open the formula editor

Example:
a = rsi(14) - rsi(2);
plot(a, "RSI", colorGreen);

The above formula calculates then plots the difference between two relative strength index indicators with two different periods.

To save a formula, select "File" then "Save Formula".

To display a list of formulas:

- Select "View" in the main menu then click on "Formulas"
- The "Formulas" form displays all formulas that are stored under the selected folder
- Double click on a formula to add it to a chart
- Right click on a formula to open a menu

How to create a formula

How to create a formula

It is also possible to open a formula directly from the formula editor control:

- Click on the "Folder+" icon/button (Next to Add Indicator/Method)
- Select "Load Formula"

Load a formula

Load a formula

Note that the formula editor control is shared by many plug-ins including the charting, screening, composites and simulator plug-in.

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Other how-to articles

How to create a custom trading indicator

How to create histogram charts

How to create a real-time watchlist

How to create a custom trendline

How to create and trade a Neural Network model

How to create trading rules based on Put and Call volume data

How to create a composite index/indicator

How to create a mobile database/account

How to create a screen


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