[idvusers] Formula: vector field from direction

• To: idvusers@xxxxxxxxxxxxxxxx
• Subject: [idvusers] Formula: vector field from direction
• From: Reinoud Bokhorst <reinoud.bokhorst@xxxxxxxxxxxxx>
• Date: Tue, 10 Nov 2009 10:43:49 +0100

Hi,
I am trying to make a vector plan view from (wave) directional data. The 
direction field contains values in radians. So I created the following new 
formula:

 makeVector( sin(d*180/3.14159), cos(d*180/3.14159) )

When I apply this formula all goes well, i.e. I get to select the direction 
field from my data source and the vector view control is shown. It correctly 
shows that the vector values range from -1 to 1. However, no vectors are shown 
in the view.. What am I doing wrong? (IDV 2.7u2)

Regards,

--
Reinoud Bokhorst
Advisor Oceanography & ICT

Tel:    +31 (0)527-242 299
Fax:    +31 (0)527-242 016
Web:    www.bmtargoss.com

Voorsterweg 28, 8316 PT Marknesse
The Netherlands

• References:
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