[Gmsh] post-processing : first test

[Christophe Geuzaine]

Paul,

The problem is that your field is not linear on the hex; to see it, you'll need to go the the adaptive visualization mode:





> On 22 Jun 2017, at 10:04, paul.carrico at free.fr wrote:
> 
> Hi Guillaume,
>  
> Yes I played with such options, but strange to have 7 intervals when asking for 10, and to note a different mapping when exporting to the old/legacy .pos format (but in that case the bounds min/max differ)
>  
> I need to dig into the documentation to see if it's possible to write "in hard"/to play with such options
>  
> Paul
>  
>  
>  
> Le 2017-06-22 08:56, DILASSER Guillaume a écrit :
>> Hi Paul, 
>> 
>> I think everything is related to the display options associated with
>> your post processing view. I would suggest that you go to the Tools >
>> Options menu and in the pop-up window select “View [0]” on the
>> left list, to the “General” tab on the top, then change a few
>> options : 
>> 
>>  ·         Interval type : set it to Filled Isovalues or Continuous
>> map. 
>> 
>>  ·         The reason why your mapping is not “regular” is
>> because the  range of the value to display does not match to the range
>> of the data values. Change the range option to Custom, then click on
>> the Min and Max button directly under it. 
>> 
>>  ·         If you want, increase the “interval” option to to add
>> the interval count in the filled iso-value mode. 
>> 
>>  ·         To increase the number of digit in the legend of a view,
>> change the Format option to something like “%.6g”. 
>> 
>> Hope this helps, let me know if you still have questions, 
>> 
>> Guillaume DILASSER 
>> 
>> Doctorant SACM / LEAS 
>> 
>> CEA - Centre de Saclay - Bât.123 - PC 319c 
>> 
>> 91191 Gif sur Yvette Cedex - France - 
>> 
>> guillaume.dilasser at cea.fr 
>> 
>> DE : gmsh [mailto:gmsh-bounces at ace20.montefiore.ulg.ac.be] DE LA PART
>> DE paul.carrico at free.fr
>> ENVOYÉ : mercredi 21 juin 2017 16:21
>> À : gmsh at onelab.info
>> OBJET : [Gmsh] post-processing : first test 
>> 
>> Hi ,
>> 
>> I'm performing (first) tests in order to familiarize with gmsh
>> post-processingformat; still trying to understand some tags, but I've
>> been noticing visual differences in the mapping.
>> 
>> In the attachment I provide the file (basic 20 nodes hexaedron) and
>> nodal values:
>> - using the original fomat, the mapping is not regular (and it should
>> be) 
>> 
>> - whereas if I export it into .pos format, and I reopen the later
>> file, i seems consistent 
>> 
>> I had a look in the different option, while it is new for me, nothing
>> has been obvious for me : any suggestion ? 
>> 
>> _Nb_: how can I increase the number of digits in the legend ? 
>> 
>> Thanks for the feedbacks 
>> 
>> Paul
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-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine

Free software: http://gmsh.info | http://getdp.info | http://onelab.info

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