Yes this is exactly what I want.
The aim of this data structure is to maintain, for each pixel of an image, a
list (which could be empty) of all points included in the corresponding area
(ie (x,y,z) lists, which are coded as vtkstd::vector<double>).
So later in the code I initialize this structure as follow:
fill(this->grid.begin(), this->grid.end(),
vtkstd::vector<vtkstd::vector<double> >());
and then I add points in each list as follow:
vtkstd::vector<double> pt2D;
pt2D.push_back(pt[0]);
pt2D.push_back(pt[1]);
this->grid[*it].push_back(pt2D);
One more time, something may be wrong but it works well with VTK.
Date: Thu, 17 Sep 2009 20:01:25 +0100
Subject: Re: [Paraview] PV and the STL: memory allocation issue
From: [email protected]
To: [email protected]
CC: [email protected]; [email protected]
I think there is another problem with your code and it just fails in that place
- you are probably overwriting memory somewhere. By having a
vector<vector<vector<double> > > > and then just allocating the first to size
of x*y, you will result in a vector or length x*y each containing empty
vector<vector<double> >'s. Are you sure this is what you want? (if that makes
sense)
If you post the code I will look.
Regards,Paul
2009/9/17 Fred Fred <[email protected]>
Yes this is exactly the line of code that fails, I put printf();getchar();
items before and after (sorry I do not use a debugger).
Ok I may send the code but I doubt it could help because, this line is clear
and I checked the argument (=100), so what?
Date: Thu, 17 Sep 2009 16:34:29 +0100
Subject: Re: [Paraview] PV and the STL: memory allocation issue
From: [email protected]
To: [email protected]
CC: [email protected]; [email protected]
Are you running this through a debugger? And, is that the line that it is
failing on? Finally, can you post the PV code that is failing?
Regards,
Paul
2009/9/17 Fred Fred <[email protected]>
Hmmm, doubtful since in my test this->grid_xsize == this->grid_ysize == 10 !!
> Date: Thu, 17 Sep 2009 08:11:43 -0400
> Subject: Re: [Paraview] PV and the STL: memory allocation issue
> From: [email protected]
> To: [email protected]
> CC: [email protected]
>
> In all likelihood, the allocation is failing because the process is
> unable to allocate the memory you ask it to. I am not surprised that
> this happens in ParaView not in VTK because ParaView tends to
> allocate a fair number of small objects probably segmenting the memory
> somewhat. Did you try a 64 bit ParaView?
>
> On Wed, Sep 16, 2009 at 11:16 AM, Fred Fred <[email protected]> wrote:
> > I use the STL through vtkstd:
> >
> > vtkstd::vector<vtkstd::vector<vtkstd::vector<double> > > grid;
> > [...]
> > this->grid.clear();
> > this->grid = vtkstd::vector<vtkstd::vector<vtkstd::vector<double> >
> >>(this->grid_xsize*this->grid_ysize);
> >
> > It works well on VTK but on PV I can this error at run time:
> >
> > terminate called after throwing an instance of 'std::bad_alloc'
> > what(): St9bad_alloc
> >
> > If I change the initialization line by:
> >
> > this->grid.resize(this->grid_xsize*this->grid_ysize);
> >
> > I get another message:
> >
> > terminate called after throwing an instance of 'std::length_error'
> > what(): vector::_M_fill_insert
> >
> > which means that the memory allocation by the vtkstl library crashes.
> > Does anybody know about this issue?
> >
> >
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