[Paraview] help

乔彦超 oliver.qiao at gmail.com
Fri Nov 19 01:45:20 EST 2010


Hi:

i want write my results into VTK format, then i can use the paraview.
but i have some problem. my compute model is 700KM*700KM, there are 71*71
nodes. it's a Quadrilateral mesh.

my matlab code as followed
% Model size, m
xsize=700000;
ysize=700000;
% Defining resolution
xnum=71;
ynum=71;
NP=xnum*ynum;
NC=xnum*ynum-2*xnum+1;
% Defining gridline positions for regular basic grid
% In horizontal direction
gridx=zeros(xnum,1);
for i=2:1:xnum
    gridx(i)=gridx(i-1)+xstp;
end
% Defining gridline positions for 51x51 irregular basic grid
% In vertical direction
gridy=zeros(ynum,1);
for i=2:1:6
    gridy(i)=gridy(i-1)+20000;
end
for i=7:1:46
    gridy(i)=gridy(i-1)+1250;
end
for i=46:1:51
    gridy(i)=gridy(i-1)+10000;
end
for i=51:1:71
    gridy(i)=gridy(i-1)+25000;
end
gridy(ynum)=ysize;

%write the points
a=0;
for i=1:1:ynum
    for j=1:1:xnum
        a=a+1;
        Points(1,a)=gridx(j);
        Points(2,a)=gridy(i);
    end
end
% write the cell
nn=0;
for j=1:1:ynum
    for i=1:1:xnum
        nn=nn+1;
        Cells(1,nn)=(j-1)*(xnum+1)+i;
        Cells(2,nn)=(j-1)*(xnum+1)+i+1;
        Cells(3,nn)=j*(xnum+1)+i+1;
        Cells(4,nn)=j*(xnum+1)+i;
        Cells(5,nn)=nn;
    end
end
% write VTK file
fp=fopen('Resault.vtk','w');
fprintf(fp,'# vtk DataFile Version 3.0\n');
fprintf(fp,'vtk output\n');
fprintf(fp,'ASCII\n');
fprintf(fp,'DATASET STRUCTURED_GRID\n');
fprintf(fp,'POINTS %d float\n',NP);
for i=1:NP
    fprintf(fp,'%e %e %e \n',Points(1,i),Points(2,i),0);
end
fprintf(fp,'\n');
fprintf(fp,'CELLS %d %d\n',NC,NC*4);
aa=0;
for i=1:NC
    aa=aa+1;
    fprintf(fp,'%d %d %d %d
%d\n',aa,Cells(1,i)-1,Cells(2,i)-1,Cells(3,i)-1,Cells(4,i)-1);
end
fprintf(fp,'\n');
fprintf(fp,'CELL_TYPES %d\n',NC);
for i=1:NC
    fprintf(fp,'%d\n',4);
end
fprintf(fp,'\n');
fprintf(fp,'POINT_DATA %d\n',NP);

when i tried to open it with paraview.
it sayed "ERROR: In
C:\berk\ReleaseBuilds\ParaView3\VTK\IO\vtkDataReader.cxx, line 2078
ERROR: In C:\berk\ReleaseBuilds\ParaView3\VTK\IO\vtkDataReader.cxx, line
2078
ERROR: In
C:\berk\ReleaseBuilds\ParaView3\VTK\Parallel\vtkPDataSetReader.cxx, line 705
vtkPDataSetReader (0AEA4D18): Expecting 'DIMENSIONS' insted of: POINTS
ERROR: In
C:\berk\ReleaseBuilds\ParaView3\VTK\Parallel\vtkPDataSetReader.cxx, line 705
vtkPDataSetReader (0AEA4D18): Expecting 'DIMENSIONS' insted of: POINTS"

What's the problem? could you help me?

thank you very much.

Best regards!

-- 
Yanchao Qiao
Ph.D student of Geodynamics

+86-136 010 926 41

College of Earth Science
Graduate University of Chinese Academy of Sciences

19A, YuQuan Road, Beijing, China, 100049
Email:oliver.qiao at 163.com <Email%3Aoliver.qiao at 163.com>;
oliver.qiao at gmail.com;qiaoyanchao07 at mails.gucas.ac.cn
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