[Paraview] extracting line data

[Stephen Wornom]

Moreland, Kenneth wrote:
>
> On 11/6/09 9:24 AM, "Stephen Wornom" <stephen.wornom at sophia.inria.fr> 
> wrote:
>
>     Questions:
>     1- What does ^@ mean?
>     2-What does ^A mean?
>
> These values, in the vtkValidPointMask column, are bit flags that were 
> originally stored in ParaView in a char array.  When writing out the 
> file, the CSV writer (incorrectly) assumed that these were ASCII 
> characters and so wrote the bits out directly to the file rather than 
> converting them to numbers.  I consider this a bug, so I submitted a 
> bug report on it (http://www.paraview.org/Bug/view.php?id=9869).
>
> (The actual meanings of the values depend on how your terminal or 
> editor converts these non-visible character values, but in this case I 
> think it is pretty clear that ^@ is representing the character 0 and 
> ^A is representing the character 1.)
>
>
>     The mesh contains 61 vertices, vertices 0-4 have no meaning that I can
>     tell, the same for vertices 56-60.
>
> They in fact probably have no meaning at all.  When you ran the Plot 
> Over Line filter, the plot probably extended past the ranges of the 
> mesh (which is common).  When the plot over line filter encounters 
> samples outside of the mesh, it marks it as invalid in the 
> vtkValidPointMask and writes dummy values for the fields.
>
>
>     How can I convert this table to a simpliler table with only the
>     values:
>     "Density","Pressure","Mach","K","Epsilon","LogFR","Temperature","Velocity","Velocity","Velocity","Vorticity","Vorticity","Vorticity","original_coordinates","original_coordinates","original_coordinates","arc_length"
>
> The easiest way is to simply bring the data into a spreadsheet program 
> like Excel, delete the offending columns, and save the data back out.
Thanks Ken, I did this but I did not find a suitable format in "save 
data" that would permit me to edit the data saved from the spread sheet.
Stephen
>
>
>     The csv data was written on my workstation, PV 3.4.0 was executing
>     with
>     4 cpus.
>
> I recommend updating to PV 3.6.  The table and CSV support has been 
> improved (especially for importing CSV files).
>
> -Ken
>
>
>
>
>
>    ****      Kenneth Moreland
>     ***      Sandia National Laboratories
> ***********  
> *** *** ***  email: kmorel at sandia.gov
> **  ***  **  phone: (505) 844-8919
>     ***      web:   http://www.cs.unm.edu/~kmorel 
> <http://www.cs.unm.edu/%7Ekmorel>
>
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-- 
stephen.wornom at sophia.inria.fr
2004 route des lucioles - BP93
Sophia Antipolis
06902 CEDEX
		
Tel: 04 92 38 50 54
Fax: 04 97 15 53 51

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