Re: [OctDev] Help making padarray.m quicker

[Josep i T. <jm...@pu...>]

On dt, 2004-08-10 at 04:31, Josep Mon=E9s i Teixidor wrote:

> Or perhaps cat is quick?

If tried a little test to pad "manually" a 1000*1000 matrix with 50
zeros (as if we used 'both').

octave:10> A=3Dones(1000,1000); t=3Dtime(); for i=3D1:10;
B=3Dcat(2,zeros(1100,50),cat(1,zeros(50,1000),A,zeros(50,1000)),zeros(1100,=
50)); endfor; time()-t
ans =3D 5.5180

octave:11> A=3Dones(1000,1000); t=3Dtime(); for i=3D1:10; B=3Dzeros(1100,11=
00);
B(51:1050,51:1050)=3DA; endfor; time()-t
ans =3D 5.4502

What do you think of these times?

--=20
Josep Mon=E9s i Teixidor
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