[visit-users] Projecting spherical slice on 2D planar

Yann Kempf yann.kempf at fmi.fi
Wed Jul 8 09:24:46 EDT 2015


I would use a 2D binning for that. Choose e.g.
Pseudocolor > operators > DataBinning > 2D > <your mesh>
and then set e.g. the latitude/longitude variables you need. If you have 
the radial variable you can even do a 3D binning and use one thin radial 
bin instead of a slice.

Note (it took me a lot of time to figure out) that if you would like to 
use a map projection operator later (to get a Mercator projection etc.) 
you need to define your data ranges to be -180:180 and -90:90, nothing 
else will do. I had a case where I used 3D cartesian data, defined the 
spherical coordinates, did the 3D binning with only one bin in radial 
direction, put a slice through that and put the whole thing through the 
map projection operator.

I hope this helps,

On 26/06/15 15:58, yori fournier wrote:
> Hi everyone,
> I have a short question.
> So here is my problem: I have some data in Cartesian coordinate.
> But these data have the shape of a sphere. So in order to look at
> a specific radius of the sphere I make a spherical slice centered
> in the center of my data. So far so good.
> However now, I'd like to project this slice on to a 2D plot, is there
> any tool which can provide such a function in visit?
> thank you all,
> and have a nice day,
> Y.

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