[Paraview] adding source to VTK (or any other format) file

[Battalgazi YILDIRIM]

Hi,

I am new user  of ParaView.  My initial impression is
great about ParaView. I am converted from Tecplot
since what I want was very doable in 2D but not 3D.


I have 3D data, and want to put some mark (such
as small shpere and its label together) in 3D field.



in tecplot there is special keyword to specify adding geometry or
text such as (in data file of Tecplot )

for text:
TEXT X=100, Y=20, C=RED, LS=2, T="The text label"

for Geometry:
GEOMETRY T=CIRCLE, X=10, Y=50
100 (radius of the circle)

Unfortunately, these things are available for 2D but not for 3D. However, it
is available in
ParaView.



Lets assume that I have  the following data,

how can I add   (and specification of location, size,...) 3d text or
sphere...  in *.vtk file?

I would be appreciated if you can help me out,

thanks,



# vtk DataFile Version 2.0
Sample rectilinear grid
ASCII
DATASET RECTILINEAR_GRID
DIMENSIONS 47 33 11
X_COORDINATES 47 float
-1.22396 -1.17188 -1.11979 -1.06771 -1.01562 -0.963542
................
0.963542 1.01562 1.06771 1.11979 1.17188
Y_COORDINATES 33 float
-1.25 -1.17188 -1.09375 -1.01562 -0.9375 -0.859375
............
1.09375 1.17188 1.25
Z_COORDINATES 11 float
0 0.1 0.2 0.3 0.4 0.5
0.6 0.7 0.75 0.8 0.9
POINT_DATA 17061
SCALARS scalars float
LOOKUP_TABLE default
0 0 0 0 0 0
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