Hi Matt,
 
I already sent an email which has the subject “About YT Divergence and Vorticity Plots from Jia-hung” to your gmail account.
In the email, it includes my data and my several frontend files. 
Any suggestion is welcome and thank you in advance for the help.
 
Sincerely,
-Jia-Hung
 
 
-----------------Previous-------------------------------------------
Hi Jia-Hung,
 
Interesting.  With cell-centered data, it ought to produce correct results.
 
Would you be able to send me a small sample dataset (off-list) and I
can take a look?  Or feel free to stop by our hangout at 11AM Eastern
and I can try it out there.
 
-Matt
 
On Wed, Mar 5, 2014 at 1:31 PM, 吳佳鴻 <r00222055 at ntu.edu.tw> wrote:
> Hi Matt,
> 
> 
> 
> I am sorry that somehow my mailbox could not receive the mail successfully,
> so I copy and paste the previous discussion at the bottom of this email.  I
> think my data is cell-centered, and I give YT my velocity field in the name
> of ["velx", "vely", "velz"].  Is there anything wrong?
> 
> 
> 
> Jia-Hung
> 
> 
> 
> 
> 
> --------------------------------------previous
> ------------------------------------------
> 
> Hi Jia-Hung,
> 
> 
> 
> Are values stored as face-centered or cell-centered in your output?
> 
> 
> 
> -Matt
> 
> 
> 
> On Wed, Mar 5, 2014 at 5:21 AM, 吳佳鴻 <r00222055 at ntu.edu.tw> wrote:
> 
>> Dear all,
> 
>> 
> 
>> 
> 
>> 
> 
>> I’m new to YT. I encountered a problem when trying to plot the
> 
>> divergence and vorticity of a velocity field with an octree data
> 
>> structure similar to FLASH.
> 
>> 
> 
>> 
> 
>> 
> 
>> I put a cylindrically symmetric velocity field into YT. So far I could
> 
>> get Velocity Magnitude Plot correctly and the Velocity vector looks
> 
>> also fine (see the attachment). However, the VorticityMagnitude and
> 
>> DivV plots have a offset toward the top right corner. I was wondering
>> where I did it wrong.
> 
>> Any suggestion will be welcome, and thanks for the help in advance.
> 
>> 
> 
>> 
> 
>> 
> 
>> Sincerely,
> 
>> 
> 
>> Jia-Hung
> 
>> 
> 
>> 
> 
>> 
> 
>> 
> 
>> 
> 
>> 
> 
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