From: Rafael V. <va...@im...> - 2015-05-15 10:28:24
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Dear Eli, if you already know the position in the parametric domain, you can compute the value of the solution with sp_eval, it will automatically find the cell using findspan. If you only know the position in the physical domain you can compute the pull-back to the parametric domain by solving a nonlinear problem. There was a discussion with Pavel about this some months ago, check the archives. Regards, Rafa On 15/05/2015 12:03, John Eli wrote: > Actually I want to compute some values at the some point and for that > i have to find some particular points on each cell and if the points > lies within that cell, i have to compute the basis function > corresponding to that point and multiply by the vector. In > mathematical sense u_h(x_p,y_p). > > best > eli > > ------------------------------------------------------------------------ > Date: Fri, 15 May 2015 11:59:05 +0200 > From: va...@im... > To: joh...@ho...; geo...@li... > Subject: Re: points in cell > > Dear Eli, > I am not sure to understand what you want. Can you be more precise? > > Rafa > > On 15/05/2015 11:48, John Eli wrote: > > Dear Rafa, > > Could you please guide me how to get cells and find some > particular points on that? > > best regards > Eli > > |