reshape matrix with diffrent size

Hi

i have a matrix with 3 column X,Y Z

vecteur =[ 0 0 0

0 0.05 0

0 0.1 0

0 0.15 0

0 0.2 0

0 0.25 0

0 0.3 0

0 0.35 0

0 0.4 0

0 0.45 0

0 0.5 0

0 0.55 0

0 0.6 0

0 0.65 0

0 0.7 0

0 0.75 0

0 0.8 0

0 0.85 0

0 0.9 0

0 0.95 0

0 1 0

0.05 0 0

0.05 0.1 -0.015386

0.05 0.2 -0.029267

0.05 0.3 -0.040282

0.05 0.4 -0.047355

0.05 0.5 -0.049792

0.05 0.6 -0.047355

0.05 0.7 -0.040282

0.05 0.8 -0.029267

0.05 0.9 -0.015386

0.05 1 0

0.1 0 0

0.1 0.05 -0.015387

0.1 0.1 -0.030392

0.1 0.15 -0.044653

0.1 0.2 -0.057809

0.1 0.25 -0.069549

0.1 0.3 -0.079567

0.1 0.35 -0.087637

0.1 0.4 -0.093536

0.1 0.45 -0.097147

0.1 0.5 -0.09835

0.1 0.55 -0.097147

0.1 0.6 -0.093536

0.1 0.65 -0.087637

0.1 0.7 -0.079567

0.1 0.75 -0.069549

0.1 0.8 -0.057809

0.1 0.85 -0.044653

0.1 0.9 -0.030392

0.1 0.95 -0.015387

0.1 1 0

0.15 0 0

0.15 0.1 -0.044653

0.15 0.2 -0.084935

0.15 0.3 -0.1169

0.15 0.4 -0.13743

0.15 0.5 -0.1445

0.15 0.6 -0.13743

0.15 0.7 -0.1169

0.15 0.8 -0.084935

0.15 0.9 -0.044653

0.15 1 0

0.2 0 0

0.2 0.05 -0.029267

0.2 0.1 -0.057809

0.2 0.15 -0.084936

0.2 0.2 -0.10996

0.2 0.25 -0.13229

0.2 0.3 -0.15134

0.2 0.35 -0.1667

0.2 0.4 -0.17792

0.2 0.45 -0.18478

0.2 0.5 -0.18707

0.2 0.55 -0.18478

0.2 0.6 -0.17792

0.2 0.65 -0.1667

0.2 0.7 -0.15134

0.2 0.75 -0.13229

0.2 0.8 -0.10996

0.2 0.85 -0.084936

0.2 0.9 -0.057809

0.2 0.95 -0.029267

0.2 1 0

0.25 0 0

0.25 0.1 -0.069549

0.25 0.2 -0.13229

0.25 0.3 -0.18208

0.25 0.4 -0.21405

0.25 0.5 -0.22507

0.25 0.6 -0.21405

0.25 0.7 -0.18208

0.25 0.8 -0.13229

0.25 0.9 -0.069549

0.25 1 0

0.3 0 0

0.3 0.05 -0.040282

0.3 0.1 -0.079567

0.3 0.15 -0.1169

0.3 0.2 -0.15134

0.3 0.25 -0.18208

0.3 0.3 -0.20831

0.3 0.35 -0.22944

0.3 0.4 -0.24488

0.3 0.45 -0.25433

0.3 0.5 -0.25748

0.3 0.55 -0.25433

0.3 0.6 -0.24488

0.3 0.65 -0.22944

0.3 0.7 -0.20831

0.3 0.75 -0.18208

0.3 0.8 -0.15134

0.3 0.85 -0.1169

0.3 0.9 -0.079567

0.3 0.95 -0.040282

0.3 1 0

0.35 0 0

0.35 0.1 -0.087637

0.35 0.2 -0.1667

0.35 0.3 -0.22944

0.35 0.4 -0.26972

0.35 0.5 -0.2836

0.35 0.6 -0.26972

0.35 0.7 -0.22944

0.35 0.8 -0.1667

0.35 0.9 -0.087637

0.35 1 0

0.4 0 0

0.4 0.05 -0.047355

0.4 0.1 -0.093536

0.4 0.15 -0.13743

0.4 0.2 -0.17792

0.4 0.25 -0.21405

0.4 0.3 -0.24488

0.4 0.35 -0.26972

0.4 0.4 -0.28788

0.4 0.45 -0.29899

0.4 0.5 -0.30269

0.4 0.55 -0.29899

0.4 0.6 -0.28788

0.4 0.65 -0.26972

0.4 0.7 -0.24488

0.4 0.75 -0.21405

0.4 0.8 -0.17792

0.4 0.85 -0.13743

0.4 0.9 -0.093536

0.4 0.95 -0.047355

0.4 1 0

0.45 0 0

0.45 0.1 -0.097146

0.45 0.2 -0.18478

0.45 0.3 -0.25433

0.45 0.4 -0.29899

0.45 0.5 -0.31437

0.45 0.6 -0.29899

0.45 0.7 -0.25433

0.45 0.8 -0.18478

0.45 0.9 -0.097146

0.45 1 0

0.5 0 0

0.5 0.05 -0.049792

0.5 0.1 -0.09835

0.5 0.15 -0.1445

0.5 0.2 -0.18707

0.5 0.25 -0.22507

0.5 0.3 -0.25748

0.5 0.35 -0.2836

0.5 0.4 -0.30269

0.5 0.45 -0.31437

0.5 0.5 -0.31827

0.5 0.55 -0.31437

0.5 0.6 -0.30269

0.5 0.65 -0.2836

0.5 0.7 -0.25748

0.5 0.75 -0.22507

0.5 0.8 -0.18707

0.5 0.85 -0.1445

0.5 0.9 -0.09835

0.5 0.95 -0.049792

0.5 1 0

0.55 0 0

0.55 0.1 -0.097146

0.55 0.2 -0.18478

0.55 0.3 -0.25433

0.55 0.4 -0.29899

0.55 0.5 -0.31437

0.55 0.6 -0.29899

0.55 0.7 -0.25433

0.55 0.8 -0.18478

0.55 0.9 -0.097146

0.55 1 0

0.6 0 0

0.6 0.05 -0.047355

0.6 0.1 -0.093536

0.6 0.15 -0.13743

0.6 0.2 -0.17792

0.6 0.25 -0.21405

0.6 0.3 -0.24488

0.6 0.35 -0.26972

0.6 0.4 -0.28788

0.6 0.45 -0.29899

0.6 0.5 -0.30269

0.6 0.55 -0.29899

0.6 0.6 -0.28788

0.6 0.65 -0.26972

0.6 0.7 -0.24488

0.6 0.75 -0.21405

0.6 0.8 -0.17792

0.6 0.85 -0.13743

0.6 0.9 -0.093536

0.6 0.95 -0.047355

0.6 1 0

0.65 0 0

0.65 0.1 -0.087637

0.65 0.2 -0.1667

0.65 0.3 -0.22944

0.65 0.4 -0.26972

0.65 0.5 -0.2836

0.65 0.6 -0.26972

0.65 0.7 -0.22944

0.65 0.8 -0.1667

0.65 0.9 -0.087637

0.65 1 0

0.7 0 0

0.7 0.05 -0.040282

0.7 0.1 -0.079567

0.7 0.15 -0.1169

0.7 0.2 -0.15134

0.7 0.25 -0.18208

0.7 0.3 -0.20831

0.7 0.35 -0.22944

0.7 0.4 -0.24488

0.7 0.45 -0.25433

0.7 0.5 -0.25748

0.7 0.55 -0.25433

0.7 0.6 -0.24488

0.7 0.65 -0.22944

0.7 0.7 -0.20831

0.7 0.75 -0.18208

0.7 0.8 -0.15134

0.7 0.85 -0.1169

0.7 0.9 -0.079567

0.7 0.95 -0.040282

0.7 1 0

0.75 0 0

0.75 0.1 -0.069549

0.75 0.2 -0.13229

0.75 0.3 -0.18208

0.75 0.4 -0.21405

0.75 0.5 -0.22507

0.75 0.6 -0.21405

0.75 0.7 -0.18208

0.75 0.8 -0.13229

0.75 0.9 -0.069549

0.75 1 0

0.8 0 0

0.8 0.05 -0.029267

0.8 0.1 -0.057809

0.8 0.15 -0.084936

0.8 0.2 -0.10996

0.8 0.25 -0.13229

0.8 0.3 -0.15134

0.8 0.35 -0.1667

0.8 0.4 -0.17792

0.8 0.45 -0.18478

0.8 0.5 -0.18707

0.8 0.55 -0.18478

0.8 0.6 -0.17792

0.8 0.65 -0.1667

0.8 0.7 -0.15134

0.8 0.75 -0.13229

0.8 0.8 -0.10996

0.8 0.85 -0.084936

0.8 0.9 -0.057809

0.8 0.95 -0.029267

0.8 1 0

0.85 0 0

0.85 0.1 -0.044653

0.85 0.2 -0.084935

0.85 0.3 -0.1169

0.85 0.4 -0.13743

0.85 0.5 -0.1445

0.85 0.6 -0.13743

0.85 0.7 -0.1169

0.85 0.8 -0.084935

0.85 0.9 -0.044653

0.85 1 0

0.9 0 0

0.9 0.05 -0.015387

0.9 0.1 -0.030392

0.9 0.15 -0.044653

0.9 0.2 -0.057809

0.9 0.25 -0.069549

0.9 0.3 -0.079567

0.9 0.35 -0.087637

0.9 0.4 -0.093536

0.9 0.45 -0.097147

0.9 0.5 -0.09835

0.9 0.55 -0.097147

0.9 0.6 -0.093536

0.9 0.65 -0.087637

0.9 0.7 -0.079567

0.9 0.75 -0.069549

0.9 0.8 -0.057809

0.9 0.85 -0.044653

0.9 0.9 -0.030392

0.9 0.95 -0.015387

0.9 1 0

0.95 0 0

0.95 0.1 -0.015386

0.95 0.2 -0.029267

0.95 0.3 -0.040282

0.95 0.4 -0.047355

0.95 0.5 -0.049792

0.95 0.6 -0.047355

0.95 0.7 -0.040282

0.95 0.8 -0.029267

0.95 0.9 -0.015386

0.95 1 0

1 0 0

1 0.05 0

1 0.1 0

1 0.15 0

1 0.2 0

1 0.25 0

1 0.3 0

1 0.35 0

1 0.4 0

1 0.45 0

1 0.5 0

1 0.55 0

1 0.6 0

1 0.65 0

1 0.7 0

1 0.75 0

1 0.8 0

1 0.85 0

1 0.9 0

1 0.95 0

1 1 0];

and i want to plot surf or contour or mesh with interpolation

a want this forme

i try this

X=vecteur(:,1);

Y=vecteur(:,2);

Z=vecteur(:,3);

GNN=length(X);

[xx,yy]=meshgrid(X,Y);

axis_x = -1/2:.02:1/2;

axis_y = -1/2:.02:1/2;

[xxx,yyy] = meshgrid(axis_x,axis_y);

Vect_zero = zeros(GNN,GNN);

% i know that i must use reshape for vector Z , but i dont know how

% cause Z is not reggulaire , sometime is 19 betwin 2 zero and somtimes 9 betwin 2 zero

% so i dont know how can i use N or reshape

Vect_zero = reshape(Z,N,N);

% i need to interpolate

Vect_interpol = interp2(xx,yy,Vect_zero,xxx,yyy,'cubic');

contour(axis_x,axis_y,Vect_interpol,-0.9:0.2:0.9);

or meshc(xxx,yyy,Vect_interpol);

someone can help

please

Answer 1

[Voss]

load('vecteur.mat') % stored vecteur in a mat file, to avoid defining it in the code again here

SI = scatteredInterpolant(vecteur(:,1),vecteur(:,2),vecteur(:,3));

[X,Y] = meshgrid(unique(vecteur(:,1)),unique(vecteur(:,2)));

surf(X,Y,SI(X,Y))

[alize beemiel]

oh .. really

you save me ...

thank you.. thank you .. thank you

its so cool

thank you sir

[Voss]

You're welcome!

scatteredInterpolant is good to use in this case, since the x- and y-coordinates have that irregular behavior (i.e., "sometime is 19 betwin 2 zero and somtimes 9 betwin 2 zero").

[alize beemiel]

yes sir