Paint not rendering with .vdc files

1

I have a bunch of binary data files with dimensions 1200x1200x400 (encoding velocity, magnetic field components and temperature). So I used the vdccreate command in the terminal to create an empty file with a list of 3 variables (x,y, and z compenents of velocity). And then I used the raw2vdc command as suggested in the documentation for all the 3 variables to store in the original file. But the issue I am facing is that when I try to render the image in the VAPOR GUI, the empty box dimension doesn’t appear after loading the file (as it does for other files), and when I try using the Volume renderer, it gives the following error: “Paint failed”, and in the logs, it says “error performing paint event”. However, I later tried it with just one variable (z velocity component) instead of all three, and it worked. I don’t seem to understand what the issue is. Any help would be greatly appreciated.

2

Could you share the vdccreate command you used, as well as all of the raw2vdc commands that followed?

3

Yes, the vdc command I used is:

vdccreate -dimension 1200x1200x400 -vars3d U:V:W velocity.vdc

and the raw2vdc commands are:

raw2vdc -ts 1 -varname U velocity.vdc result_prim_1.072400
raw2vdc -ts 1 -varname V velocity.vdc result_prim_1.072400
raw2vdc -ts 1 -varname W velocity.vdc result_prim_1.072400

(where ‘result_prime…’ is just the binary filename with the variables)

4

That looks legitimate to me. I know your files are large, but you would be able to share one of them so I can try to reproduce your error?

5

I have uploaded the file in this google drive link.
This is the z-velocity component.

6

The problem was the -ts 1 flag in raw2vdc, which is an offset from the first timestep. This should be 0, or omitted since 0 is the default.

Vapor should probably be warning users when it receives invalid arguments though, so I’ll submit a ticket to make this error more obvious.

raw2vdc -ts 0 -varname W velocity.vdc result_prim_1.072400

Thank you for bringing this problem to our attention and let us know if there are further issues.

7

Thanks a lot! It worked perfectly now.