[Paraview] Data range problem

[Dominik Szczerba]

A simple test you could do is to try to read the raw binary file into matlab. 
there you can also specify both endianness and precision (double, int, etc.). 
I bet the reason you do not get the right numbers is that you import a wrong 
datatype.

Dominik

On Sunday 12 October 2008 11:54:36 pm Lester Anderson wrote:
> I have used a plain text editor to write a simple ascii structure, and also
> tried using Surfer (Golden Sofware) to prepare .DAT file do the same (eg
> space delimited or comma delimited). Basically I am testing a simple ascii
> text file structure and it ckearly loads the data (points plot where they
> should be), but it is unclear how to set the data type. If we are dealing
> with positive an negative numbers then I assume that means we need a signed
> integer or real number type.
>
> Perhaps if you could show an example data file that works in the raw import
> as an xyz,value it might be clearer as to how to proceed. Thanks for the
> help, I'm sure I'm missing something very obvious here just can't put my
> finger on it yet!
>
> Lester> From: dominik at itis.ethz.ch> To: lester_anderson1963 at hotmail.com>
> Subject: Re: [Paraview] Data range problem> Date: Sun, 12 Oct 2008 20:58:52
> +0200> CC: paraview at paraview.org> > How do you write the data to a file?> >
> Dominik> > On Sunday 12 October 2008 02:36:27 pm Lester Anderson wrote:> >
> Hi Dominik> >> > So how can I define the correct datatype? For example, if
> it is just signed> > integers like the test I made (-5 to +5), or real
> numbers (eg -2.54 to> > 5.55). I set the file to LittleEndian as I'm on a
> PC> >> > Importing the data via the raw format is working, it's just
> working out the> > correct type to make it work!> >> > Thanks for the help>
> >> > Lester > From: dominik at itis.ethz.ch> To: paraview at paraview.org>
> Subject:> > Re: [Paraview] Data range problem> Date: Sun, 12 Oct 2008
> 12:17:03 +0200>> > CC: lester_anderson1963 at hotmail.com> > You most likely
> imposed wrong> > datatype when importing the raw stuff.> > Dominik> > On
> Sunday 12 October> > 2008 10:55:18 am Lester Anderson wrote:> > Hello> >> >
> I have just created> > a test as a set of random values:> >> >> >
> "x","y","z","grav"0,0,0,20,0,1,30,0,2,50,1,0,-10.1.1,-30,1,2,-50.2.0,10,2,1
>> >>> >
> >,20,2,2,51,0,0,-31,0,1,-41,0,2,-11,1,0,01.1.1,-21,1,2,21.2.0,11,2,1-11,2,2
>> >,0> >2,0,0,02,0,1-52,0,2,-42,1,0,-12.1.1,12,1,2,22.2.0,52,2,1,42,2,2,4>
> >> >> > It is a cube of point values (x,y,z) with a test scalar (grav). The
> data> >> > range of "grav" is -5 to +5> >> > I imported the data into
> Paraview as a> > raw(binary) format file which seemed> > ok, with the
> extents: 0 to 2 on> > (x,y,z). The result was a Image (uniform> >
> Rectilinear Grid)> >> > When I> > look at the data information it shows the
> data range as 2573, 13612> >> > (min,max) - what is going on here?> >> >
> Thanks> >> > Lester> >> >
> _________________________________________________________________> > Make
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> http://clk.atdmt.com/UKM/go/111354029/direct/01/> > > > -- > Dominik> >
> Szczerba, Ph.D.> Computational Physics Group> Foundation for Research on> >
> Information Technologies in Society> http://www.itis.ethz.ch> >
> _________________________________________________________________> > Make a
> mini you and download it into Windows Live Messenger> >
> http://clk.atdmt.com/UKM/go/111354029/direct/01/> > > > -- > Dominik
> Szczerba, Ph.D.> Computational Physics Group> Foundation for Research on
> Information Technologies in Society> http://www.itis.ethz.ch
> _________________________________________________________________
> Make a mini you and download it into Windows Live Messenger
> http://clk.atdmt.com/UKM/go/111354029/direct/01/



-- 
Dominik Szczerba, Ph.D.
Computational Physics Group
Foundation for Research on Information Technologies in Society
http://www.itis.ethz.ch