# yade-users team mailing list archive

## [Question #707217]: Visualize the 2D particle pack as 2D circles in Paraview

```New question #707217 on Yade:

Hello everyone,
I have built a dense pack with spheres in the xy plane (blockedDOFs="zXY) with the following code:

#####################################
from __future__ import print_function

O.materials.append(FrictMat(young=6.e8,poisson=.8,frictionAngle=.0))

sp = pack.SpherePack()
size = .24
sp.makeCloud(minCorner=(0,0,.05),maxCorner=(size,size,.05),rMean=.005,rRelFuzz=.4,num=400,periodic=True,seed=1)
sp.toSimulation()
O.cell.hSize = Matrix3(size,0,0, 0,size,0, 0,0,.1)
print(len(O.bodies))
for p in O.bodies:
p.state.blockedDOFs = 'zXY'
p.state.mass = 2650 * 0.1 * pi * p.shape.radius**2 # 0.1 = thickness of cylindrical particle
inertia = 0.5 * p.state.mass * p.shape.radius**2
p.state.inertia = (.5*inertia,.5*inertia,inertia)

O.dt = utils.PWaveTimeStep()
print(O.dt)

O.engines = [
ForceResetter(),
InsertionSortCollider([Bo1_Sphere_Aabb()]),
InteractionLoop(
[Ig2_Sphere_Sphere_ScGeom()],
[Ip2_FrictMat_FrictMat_FrictPhys()],
[Law2_ScGeom_FrictPhys_CundallStrack()]
),
PeriTriaxController(
dynCell=True,
goal=(-1.e5,-1.e5,0),
relStressTol=.001,
maxUnbalanced=.001,
maxStrainRate=(.5,.5,.0),
doneHook='term()',
label='biax'
),
NewtonIntegrator(damping=.1)
]

def term():
O.engines = O.engines[:3]+O.engines[4:]
print(getStress())
print(O.cell.hSize)
setContactFriction(0.5)
O.cell.trsf=Matrix3.Identity
for p in O.bodies:
p.state.vel = Vector3.Zero
p.state.angVel = Vector3.Zero
p.state.refPos = p.state.pos
p.state.refOri = p.state.ori
O.pause()

O.run();O.wait()
#####################################

Now I want to export the particle information and visualize it as a real 2D circle inside the Paraview.
However, if I use ‘VTKRecorder’ to store and export the data, it still appears as a 3D sphere in Paraview.
I also tried the '2D Glyph' filter in Paraview, but it still didn't work.
Does anyone know how to do this? Many thanks for any advises or solutions.

Kind regards
Yipeng

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