Tutorial 12 | Create a basic RadarScreen indicator

Welcome to tutorial 12 in this series of tutorials designed to introduce basic TradeStation EasyLanguage concepts. In tutorials 11, I created a simple example ‘strategy.’ Strategies can be designed to show where to get in and out of a position. They can be automated to actually place trades (with confirmation on or off). They are also useful for backtesting.

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This tutorial goes through the steps to create a basic RadarScreen indicator. As always, this indicator SHOULD NOT be used to trade with. This tutorial is designed to help you with the ‘mechanics’ of creating your own indicator for RadarScreen, rather than presenting a viable or usable indicator.

This indicator is designed to be applied to RadarScreen. RadarScreen shows a listing of information about the current situation of many securities. It appears a little like a spreadsheet grid. The particular indicator included below screens stocks based on volume and a recent low or high. You will probably find you will get the most values from this tutorial if you complete all the steps yourself.

Step 1

The first step in the process is to open a RadarScreen session by clicking the RadarScreen icon in the tools bar on the left of your screen. If the tools bar is not visible at the left of your screen, click View – ShortCut Bar:.

EasyLanguage Tutorial 12

Step 2

An empty RadarScreen grid will appear.

EasyLanguage Tutorial 12

Step 3

To ‘populate’ the RadarScreen grid, click Insert – Symbol list.

EasyLanguage Tutorial 12

Step 4

It is very easy to create a custom symbol list, however for the purposes of this tutorial, we will use one of the built-in TradeStation lists..

EasyLanguage Tutorial 12

Step 5

We will use the S&P 100 Index.

EasyLanguage Tutorial 12

Step 6

If you press the View Symbols button, you will see a listing of symbols in the right hand part of the screen.

EasyLanguage Tutorial 12

Step 7

Once the symbol list has been selected, RadarScreen will be filled with a list of symbols and the following information: Interval, Last, Net chg, Net % Chg, Bid, Ask, High, Low.

EasyLanguage Tutorial 12

Step 8

We now need to create our EasyLanguage indicator. In the tool bar on the left of the screen, click New Indicator.

EasyLanguage Tutorial 12

Step 9

Enter a name for the indicator – _MarkPlexEG – or whatever takes your fancy. Click on the Chart Analysis box so that the indicator is only made available for RadarScreen windows. Since we are going to type our indicator from scratch, click {None} for the Select Template option. Then press OK.

EasyLanguage Tutorial 12

Step 10

Enter the following code into the blank window as follows:

EasyLanguage Tutorial 12

The program works as follows:

Variables:
_Markplex1(False),
_Markplex2(False);

Defines the variables that we will use in the program and assigns them an initial value of False.

IF
V > 5000000
AND L > L[1] {Low of today is greater than the low of yesterday}
AND L[1] < L[2] {Low of yesterday is less than the low of 2 days ago}
AND L[2] < L[3] {Low of 2 days ago is less than the low of 3 days ago}
AND L[3] < L[4] {Low of 3 days ago is less than the low of 4 days ago}

determines if volume has exceeded a certain level and that a low ‘pivot’ has occurred one bar ago

THEN
Begin
_Markplex1 = True;
Plot1(_Markplex1,”M1″,Green,White);
End
ELSE
Begin
_Markplex1 = False;
Plot1(_Markplex1,”M1″,Red);
End;

If the condition is true, Plot1 will appear as ‘True.’ The text is printed in green on a white background. If the condition is false, Plot1 will appear as ‘False.’. The text will be printed as red, against the default background color (in our case: black).

IF
V > 5000000
AND H < H[1] {High of today is less than the high of yesterday}
AND H[1] > H[2] {High of yesterday is greater than the high of 2 days ago}
AND H[2] > H[3] {high of 2 days ago is greater than the high of 3 days ago}
AND H[3] > H[4] {High of 3 days ago is greater than the high of 4 days ago}

determines if volume has exceeded a certain level and that a high ‘pivot’ has occurred one bar ago

Then
Begin
_Markplex2 = True;
Plot2(_Markplex2,”M2″,Red,White);
End
Else
Begin
_Markplex2= False;
Plot2(_Markplex2,”M2″,Red);
End;

If the condition is true, Plot2 will appear as ‘True.’ The text is printed in red on a white background. If the condition is false, Plot1 will appear as ‘False.’. The text will be printed as red, against the default background color (in our case: black).

Step 11

Once the indicator has been created, it needs to be verified. This is achieved by clicking Tools – Verify. Alternately you can press F3.

EasyLanguage Tutorial 12

Step 12

To insert the indicator into RadarScreen, click on the RadarScreen window and then click Insert – Indicator.

EasyLanguage Tutorial 12

Step 13

Select the indicator. created and click the Add button.

EasyLanguage Tutorial 12

The new indicator name will no appear in the ‘Selected’ item list.

EasyLanguage Tutorial 12

Step 14

Change the RadarScreen interval by clicking on the Interval column and selecting ‘Day”

Step 15.

The RadarScreen should now include 2 additional columns as follows:

EasyLanguage Tutorial 12

Notice the column headings.

Step 16

Opening a chart for one of the symbols where the M1 column appeared as True shows the low pivot similar to the following chart.

EasyLanguage Tutorial 12

Summary

This tutorial demonstrates the creation of a very simple indicator for RadarScreen. RadarScreen is a very powerful tool for screening large numbers of stocks or futures

If you have any questions about the above material or you would like to point out a correction or typo, please e-mail: tutorials@markplex.com. Also e-mail if you have any ideas for future tutorials.

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