Re: [Blitz-support] grad3D(A) compile error

[Patrik J. <co...@fa...>]

Hey Paul,

Can you elaborate on what "not working" means. It doesn't compile?
Certainly you should be able to take gradD(phi).

cheers,

/Patrik

On Thu, Jan 28, 2010 at 10:59 PM, Paul Hilscher <pph...@gm...> wrote:
> Dear Patrick, Dear all
> I did not, thanks for the hint. My compiler does not complain anymore :),
>  however I am struggling now with a new problem. I want to calculate the
> energy of
> an electric field from the potential (3D) using
> Array<double, 3> phi;
> ......
> Array<TinyVector<double, 3>, 3> E;  E= grad3D(phi);  // not working
> ...
> double energy =   sum(sum(pow2(grad3D(phi))))                   // not
> working
> ...
> what I do wrong ? Do you know an elegant solution for this ? Sorry I tried
> around but could not find anything nice and/or working ! Thanks for your
> time
> Paul
>
>
>
>
> On Fri, Jan 29, 2010 at 4:04 AM, Patrik Jonsson <co...@fa...>
> wrote:
>>
>> Hi Paul,
>> Are you including "blitz/array/stencil-et.h" ?
>>
>> cheers,
>>
>> /Patrik
>>
>> On Thu, Jan 28, 2010 at 12:39 AM, Paul Hilscher <pph...@gm...>
>> wrote:
>> > Dear all,
>> >
>> > I want to calculate the gradient of an 3D array by using
>> >
>> >
>> > blitz::Array<double, 3> A(Range(0,9), Range(0,9), Range(0,9));
>> > A = 1.e0;
>> > blitz::grad3D(A);
>> >
>> > during compiling I get the following error message (with gcc-4.4.1 on
>> > ubuntu,
>> > on blitz 0.9 and CVS)
>> >
>> > home/philscher/Code/blitz//include/blitz/array/stencilops.h:126:
>> >          error: ‘class blitz::Array<double, 3>’ has no member named
>> > ‘shift’
>> >
>> >
>> >
>> > any hints or suggestion how to fix this problems ?
>> > Thanks in advance !
>> >
>> > Paul Hilscher
>> >
>> >
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