[Nek5000-users] ?==?utf-8?q? Output format of Nek5000 file

[nek5000-users at lists.mcs.anl.gov]

Sometimes visit will have dropouts if your slice corresponds precisely to the location of an element
interface.

Offsetting the slice by, say, .00001, will often correct that issue...

Paul

________________________________________
From: nek5000-users-bounces at lists.mcs.anl.gov [nek5000-users-bounces at lists.mcs.anl.gov] on behalf of nek5000-users at lists.mcs.anl.gov [nek5000-users at lists.mcs.anl.gov]
Sent: Friday, February 24, 2017 9:15 AM
To: nek5000-users at lists.mcs.anl.gov
Subject: Re: [Nek5000-users] ?==?utf-8?q?  Output format of Nek5000 file

 Thank you for your quick response. I just feel more comfortable working interactively with data. The reading tool of data and mesh with Matlab are already there, I just need a way to map the coordinate of those data with the mesh information.

More specific reason is I read the data with Visit, and when I take slides, it appear a strange white band in my fields, and I don't know the reason so I need an alternative way to visualize my fields.




On Friday, February 24, 2017 17:45 CET, nek5000-users at lists.mcs.anl.gov wrote:

> * Yes the .fXXXXX files are the binary fld files. The ASCII and the old binary format ends with .fldXX.
> * Is there any special reason why you want to load the data into MATLAB?
>
>
> -----Original message-----
> > From:nek5000-users at lists.mcs.anl.gov <nek5000-users at lists.mcs.anl.gov>
> > Sent: Friday 24th February 2017 16:46
> > To: nek5000-users at lists.mcs.anl.gov
> > Subject: [Nek5000-users] Output format of Nek5000 file
> >
> > Hello everyone,
> >
> > I have recently started to work with Nek5000, I have few question about the output format:
> >
> > -In all the documents available, they talk about .fld file, but I launched the quickstart tutorial, and I got only .f000... data file. Is this the same?
> >
> > -I found a Matlab script that read binary data into Matlab, and the data I received is a matrix of : nel .  N^3 .  fields
> > So I guess for each spectral element, and for each field, the file store N^3 numbers, corresponding to the values. But I have read somewhere that you can't mix the equally spaced value with GLL points. So in the binary file I got, what type of mapping is using? GLL abscissas or equally spaced?
> >
> > -About GLL points, I got it in 1D, but when it come to 3D, with curved elements, it become a bit complex, do you know where in the program or are there any pre-made tool that map the GLL points coordinates base on coordinate of vertices and curvature?
> >
> >
> > Thank you,
> >
> >
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