<br><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Gabriel - ud Carvalho</b> <span dir="ltr"><<a href="mailto:gabriel.ud@gmail.com">gabriel.ud@gmail.com</a>></span><br>
Date: 2010/9/27<br>Subject: Plot vector - geographic X trigonometric system<br>To: <a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a>, <a href="mailto:GRADSUSR@list.cineca.it">GRADSUSR@list.cineca.it</a><br>
<br><br>Hello you all!<div>Here is the deal:</div><div>In my data, the wind direction is in degrees, with a geographic representation (wich means that 0 is at the north and goes clockwise),</div><div>the problem is that to display this data with 'gxout vector', I have to decompose it in 'u' and 'v'. In order to do this, I have to use the trigonometric functions 'sin' and 'cosin'. The problem is here, these functions assume that the input data is with a trigonometric representation (wich means that 0 degrees is eastside and goes anti-clockwise),butthey arenīt, so, it got all messed up.</div>
<div><br></div><div>I donīt know what to do,but I believe that this is a common problem,</div><div>I hope someone will know the answer...</div><div><br></div><div>Sorry about my poor english,</div><div><br></div><div>My best regards,</div>
<div>Gabriel Carvalho</div><font color="#888888"><div><br></div><div> </div><div><br></div>
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