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Aproximación de nube de puntos (x,y,z) en una superficie

Buenas a todos,

He intentado aproximar una nube de puntos con datos en x, y, z a una superficie. En principio, he intentado aproximarla a una elipsoide sin tener un resultado correcto. Me gustaría saber si alguien tiene alguna idea de como puedo aproximar esta nube de puntos, la superficie no tiene una forma exacta por lo que se tendría que buscar alguna ecuación que se adapte a la misma.

Muchas gracias
0
nereshca (2)
2/2/2012 6:33:15 PM
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...de-de beep de-de-beep, de-de beep-de-de-beep de-de-beep beep-beep-beep! Beep de-de-beep, de-de beep de-de-beep de-de GOODNESS GRACIOUS ME! Ode to Peter 'Heather' Thomas- by Mr. A. Nonymous. *cough* I thank you! "George Orwell" <nobody@mixmaster.it> wrote in message news:fbdf88507c5e28f133ee18831d3e540e@mixmaster.it... > ..de-de beep de-de-beep, de-de beep-de-de-beep de-de-beep > beep-beep-beep! Beep de-de-beep, de-de beep de-de-beep de-de > GOODNESS GRACIOUS ME! > > Ode to Peter 'Heather' Thomas- > by Mr. A. Nonymous. > > *cough* I thank you! > Sounds like Wigfield's Saturday night regards andy On Wed, 25 Apr 2007 18:55:29 GMT, "Andy Rea" <andy@zx-81.co.uk> wrote: >"George Orwell" <nobody@mixmaster.it> wrote in message >news:fbdf88507c5e28f133ee18831d3e540e@mixmaster.it... >> ..de-de beep de-de-beep, de-de beep-de-de-beep de-de-beep >> beep-beep-beep! Beep de-de-beep, de-de beep de-de-beep de-de >> GOODNESS GRACIOUS ME! > >Sounds like Wigfield's Saturday night To me it sounds more like the "Bubble Bobble" in-game tune. :-) Robert Baker wrote: .... >>>..de-de beep de-de-beep, de-de beep-de-de-beep de-de-beep >>>beep-beep-beep! Beep de-de-beep, de-de beep de-de-beep de-de >>>GOODNESS GRACIOUS ME! >>> >>Sounds like Wigfield's Saturday night > > To me it sounds more like...

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Hi, Can I use a hard-coded set in sql to make the code cleaner? For example 'where x in {'CC','UG','WA','SS'}' rather than x='cc' or x='ug' etc.... If so what's the correct syntax (i've tried various ways with no luck) Thanks, Chris Just use regular round brackets. HTH - Turtle "Not Me" <sum1@sumwhere.fake> wrote in message news:bntfq9$imb$1@ucsnew1.ncl.ac.uk... > Hi, > > Can I use a hard-coded set in sql to make the code cleaner? > > For example 'where x in {'CC','UG','WA','SS'}' rather than x='cc' or x='ug' > etc.... > > If so what's the correct syntax (i've tried various ways with no luck) > > Thanks, > Chris > > "MacDermott" <macdermott@nospam.com> wrote in message news:Nltob.13155$X22.10882@newsread2.news.atl.earthlink.net... > "Not Me" <sum1@sumwhere.fake> wrote in message > news:bntfq9$imb$1@ucsnew1.ncl.ac.uk... > > Hi, > > > > Can I use a hard-coded set in sql to make the code cleaner? > > > > For example 'where x in {'CC','UG','WA','SS'}' rather than x='cc' or > x='ug' > > etc.... > Just use regular round brackets. Cheers, I can't understand how I missed that (honestly tried quite a few ways!) ...

quiero saber sobre Control de tranferencia de calor con PID
Hola Amigos quisiera saber si uno de ustedes tiene algun programa en Labviw 8.2 donde pueda controlar la temperatura con PID usando la DAQ 6008, si me puediesen ayudar le estaria muy agradecido y si no de alguna manera, gracias por su tiempo, nos vemos Hola Antonio el control PID, es lo mismo si es para control de calor o nivel de un tanque o cualquier cosa, la diferencia radica en que la planta que controlas es diferente y por lo tanto los paramentaros cambian pero el principio es el mismo, por lo que puedes utilizar los ejemplos de PID en Help&gt;&gt;Find Examples para ver c�mo puedes utilizar. La forma m�s f�cil de realizarlo es si tienes el toolkit de control <a href="http://www.ni.com/toolkits/lv_pid_control.htm" target="_blank"> PID</a> Este foro te podr�a ser de inter�s: <a href="http://forums.ni.com/ni/board/message?board.id=6170&amp;message.id=1932" target="_blank"> http://forums.ni.com/ni/board/message?board.id=6170&amp;message.id=1932</a> En esta liga puedes encontrar en espa�ol un poco de informaci�n sobre lo que es PID. <a href="http://es.wikipedia.org/wiki/Proporcional_integral_derivativo." target="_blank"> http://es.wikipedia.org/wiki/Proporcional_integral_derivativo.</a> Tambi�n estos links te pueden ser de gran utilidad: <a href="http://zone.ni.com/devzone/cda/tut/p/id/3719#toc0" target="_blank">Ready-to-Run PID Tempe...

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