[Paraview] Ensight Gold reader "new line" error

[Simone Crippa]

Thanks for the answer SamuelKey. That's indeed a common source of errors 
... DOS <-> *nix ... the dreaded end line statement(s)! Since I stayed 
within *nix environment, this is though not a problem here.

But ... I think now I know what's wrong with my case files. I noticed 
that your case file didn't include the "constant per case" lines. So I 
checked the reader source and I found a check for the stanza "constant" 
in vtkEnSightReader.cxx:

[...]
if (strncmp(line, "constant", 8) == 0)
         {
         vtkDebugMacro(<< line);
         }
       else if [...]

I am not a C++ guru (and I didn't dig deeper hereafter), but this looks 
to me like a check for a "constant-whatever" line that leads to a debug 
message. When the "constant" line is short enough (less than 79 
characters) the reader just jumps to the next line, but when the 
"constant" line is wrapped (being longer than 79 ch.) the reader exits, 
complaining about an unknown line begin (the wrapped line of the 
"constant" stanza)


OK, learned something new today :-)


/Simone



SamuelKey wrote:
> Simone--
> 
> I am not sure what follows is relevant, but here is my experience.
> 
> I write EnSight gold case files on both dos (WindowsXP) and Linux.  When 
> I take my dos-formatted case files to Linux for EnSight to read I must 
> run them through dos2unix to get the line terminators changed before 
> EnSight can read them without getting confused. I have not tried 
> PV-on-Linux reading dos-formatted case files, nor have I tried the 
> reverse. (The two test-file translators dos2unix and unix2dos are quite 
> useful.)
> 
> I have attached a typical (for me) case file
> 
> Simone Crippa wrote:
>> Hi,
>>
>> when trying to read Ensight Gold "case" files with PV I receive error 
>> messages when a "new line" is encountered ... or better, 
>> vtkEnSightReader complains about the next line missing a section title:
>>
>>
>> Here's part of the output:
>>
>>  There was a VTK Error in file: 
>> /home/crippa/tmp/ParaView/VTK/IO/vtkEnSightReader.cxx (987)
>>  vtkEnSightGoldBinaryReader (0x1e7d1e0): invalid VARIABLE line: 
>> 46986.01 46986.01 46986.01 46986.01
>>
>>
>> When reading this case file:
>>
>> FORMAT
>> type: ensight gold
>>
>> GEOMETRY
>> model: case15_remeshed_2494_2610.geo
>>
>> VARIABLE
>> constant per case:   1  Pressure     46986.01
>>  46986.01 46986.01 46986.01 46986.01
>>  46986.01 46986.01 46986.01 46986.01
>> [...]
>>
>>
>> I reformatted the case file to feature only one line per section 
>> title, and then the reader works.
>>
>> This is OK until (I think) the 79 character limit is hit, as per 
>> "EnSight Gold Case File Format" specifications:
>>
>>
>> EnSight Gold Case File Format
>>      The Case file is an ASCII free format
>>      [...]
>>      Notes:  All lines in the Case file are limited to 79 characters.
>>
>>
>> Then, the "reformatting-into-one-line-per-section-title" hack doesn't 
>> work anymore.
>>
>> Any clue as to why vtkEnSightGoldBinaryReader doesn't like new lines?
>>
>>
>> Regards, Simone
>>
>>
> 
> ------------------------------------------------------------------------
> 
> FORMAT
> type: ensight gold
> GEOMETRY
> model:                   1  1  fmaego.data.geom    change_coords_only
> VARIABLE
> vector per node:         1  1  Displacement          fmaego.data.ndis
> vector per node:         1  1  Velocity              fmaego.data.nvel
> vector per node:         1  1  Acceleration          fmaego.data.nacc
> scalar per element:      1  1  Material              fmaego.data.emat
> scalar per element:      1  1  Pressure              fmaego.data.eprs
> scalar per element:      1  1  Bulk-Strain           fmaego.data.elnv
> scalar per element:      1  1  Strain-Energy-Density fmaego.data.esed
> scalar per element:      1  1  Effective-Stress      fmaego.data.edev
> tensor symm per element: 1  1  Stress                fmaego.data.estr
> TIME
> time set:                1
> number of steps:       100
>  time values:             3.094868698632648E-006  2.042613341097548E-004
>   4.054277995208797E-004  6.065724059308634E-004  8.106924196512119E-004
>   1.011596807526096E-003  1.212464890985135E-003  1.416429025266930E-003
>   1.617264454734145E-003  1.821158020072292E-003  2.021875070316808E-003
>   2.222525500838138E-003  2.426186466361033E-003  2.626707914960987E-003
>   2.830259602013934E-003  3.030645320129141E-003  3.234050835223167E-003
>   3.437410391236644E-003  3.637631471897706E-003  3.840871829018798E-003
>   4.040978696552610E-003  4.244124018612699E-003  4.447231219194108E-003
>   4.647223096326643E-003  4.850235504647590E-003  5.053179712576191E-003
>   5.253008658320165E-003  5.455911848439010E-003  5.658827301128181E-003
>   5.858698852369602E-003  6.061682444320152E-003  6.264669854437937E-003
>   6.467615352387980E-003  6.667420741504860E-003  6.870254941696462E-003
>   7.073073859303125E-003  7.272836451528109E-003  7.475714762839274E-003
>   7.678629774688592E-003  7.881569535812516E-003  8.081461466342277E-003
>   8.284457655375948E-003  8.487483154942467E-003  8.687457578998590E-003
>   8.890529193341505E-003  9.093617728086487E-003  9.293633560665321E-003
>   9.496727610927356E-003  9.699821269568502E-003  9.899839977139389E-003
>   1.010293282229708E-002  1.030601577488570E-002  1.050602129180759E-002
>   1.070911280207646E-002  1.090913952514121E-002  1.111226756468156E-002
>   1.131540210907870E-002  1.151544129668848E-002  1.171854023379915E-002
>   1.192163888381941E-002  1.212167687706535E-002  1.232483209712837E-002
>   1.252801151188604E-002  1.272812213686105E-002  1.293131380295324E-002
>   1.313143603780961E-002  1.333463385998554E-002  1.353782320581181E-002
>   1.373793655903373E-002  1.394114227303919E-002  1.414436531349031E-002
>   1.434451398302326E-002  1.454774553038095E-002  1.474790777377121E-002
>   1.495115259811304E-002  1.515439389426942E-002  1.535455637782674E-002
>   1.555780382610955E-002  1.575797759773099E-002  1.596123953345093E-002
>   1.616451092449782E-002  1.636471229473077E-002  1.656800076747774E-002
>   1.676821205708088E-002  1.697150630356204E-002  1.717171828821934E-002
>   1.737501044720523E-002  1.757830287450082E-002  1.777851341055861E-002
>   1.798180050535155E-002  1.818200441085808E-002  1.838529045905108E-002
>   1.858858317702626E-002  1.878879851428462E-002  1.899208755237646E-002
>   1.919228527196698E-002  1.939555855740846E-002  1.959884043919169E-002
>   1.979905589383552E-002  2.000236760323923E-002
> FILE
> file set:                   1
> number of steps:          100


-- 
Simone Crippa
Research assistant, Dipl.-Ing.
Royal Institute of Technology (KTH)
Aeronautical and Vehicle Engineering
Division of Aerodynamics
Teknikringen 8
SE-10044 Stockholm, Sweden
+46 (0)8 790 6465