BullScript: How to draw a horiz line?

Print Page | Close Window

How to draw a horiz line?

Printed From: BullCharts Forum
Category: BullCharts
Forum Name: BullScript
Forum Discription: Technical discussion related specifically to the BullScript programming language.
URL: http://www.bullcharts.com.au/forum/forum_posts.asp?TID=154
Printed Date: 05 Apr 2025 at 7:55pm
Software Version: Web Wiz Forums 9.69 - http://www.webwizforums.com

Topic: How to draw a horiz line?

Posted By: kneighbour
Subject: How to draw a horiz line?
Date Posted: 27 Feb 2005 at 1:40pm

What i would like to do is draw a horizontal line at a calclated level.

ie I want to draw a line at a set price (say $3.00) - how is this done?

Replies:

Posted By: Peter
Date Posted: 28 Feb 2005 at 9:42am

If you want to draw some fixed horizontal lines, use the horzline attribute. Eg: [horzline=20,80]

If you want to draw a calculated line, just make the calculation and return it as a result. Eg:
3*5;

If you want to make the calculation based on current prices, etc, then use the lastvalue function. Eg:
lastvalue( Low * 0.9);

This will calculate the result for the last bar and return that result on every bar.

Posted By: kneighbour
Date Posted: 28 Feb 2005 at 8:09pm

Originally posted by Peter

If you want to draw some fixed horizontal lines, use the horzline attribute. Eg: [horzline=20,80]

The way I read the manual, this puts lines at (in this example) the 20% and 80% points. Presumable on an oscillator. For aprice chart would I use

[horzline=1.23] (for a line at $1.23)

Originally posted by Peter

If you want to draw a calculated line, just make the calculation and return it as a result. Eg:
3*5;

So this would be [horzline=3*5] ??

Originally posted by Peter

If you want to make the calculation based on current prices, etc, then use the lastvalue function. Eg:
lastvalue( Low * 0.9);

So this would be [horzline=lastvalue( Low * 0.9)] ??

Originally posted by Peter

This will calculate the result for the last bar and return that result on every bar.

This raises a good point - presumably this would fill the screen with horizontal lines? Can you alter the width of a line?

Posted By: Peter
Date Posted: 01 Mar 2005 at 10:53am

The horzline attribute only allows fixed numbers to be entered. (not calculations). Therefore, to get around the problem, we just return the calculation as a normal plot, but in such a way that it always returns the same result and appears as a horizontal line. (this is how people usually achieve horizontal lines in Metastock scripts).

Eg:

{Fixed horizontal line}
[horzline=20,80]

{Calculated horizontal line)
5*10;

{Calculated horizontal line based on price info }
lastvalue( Low * 0.9)