# Connectivity Crashing on Time Update in pvbatch without GUI

**URL:** https://discourse.paraview.org/t/connectivity-crashing-on-time-update-in-pvbatch-without-gui/6316
**Category:** ParaView Support
**Created:** [January 27, 2021, 8:04pm UTC](https://discourse.paraview.org/t/connectivity-crashing-on-time-update-in-pvbatch-without-gui/6316 "2021-01-27T20:04:05Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![zwilde](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/z/9de053/32.png) [@zwilde](https://discourse.paraview.org/u/zwilde)
#### Post date: [January 27, 2021, 8:04pm UTC](https://discourse.paraview.org/t/connectivity-crashing-on-time-update-in-pvbatch-without-gui/6316/1 "2021-01-27T20:04:05Z")

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I am trying to loop over the connectivity filter at different time steps to perform calculations for each region using pvbatch on a cluster (RHELS 7.8). The only way I can get the data to try to update with a changed timestep is via a Render command or animationScene. Whenever I do this I get an error (below) that appears to be related to the connectivity filter. The initial time step does have an empty connectivity filter but even when I force the next time step to be populated this error comes up. I do NOT have this problem when run through the GUI. Have tried Paraview 5.8.0, 5.8.1, 5.9.0 RC2,3 all without success.  
Any ideas? Thank you  
from paraview.simple import \*  
p2f=’/path/to/file/Visualization’  
paraview.simple.\_DisableFirstRenderCameraReset()  
# get active view  
renderView1 = GetActiveViewOrCreate(‘RenderView’)  
layout1 = GetLayout()  
spcth = SpyPlotReader(FileName=p2f+’/spcth.0’)  
spcth.CellArrays = [‘Temperature (eV)’,‘Volume Fraction - 2’,‘Specific Energy (erg/g) - 2’,‘Specific Energy (erg/g) - 4’,‘X velocity (cm/s)’, ‘Y velocity (cm/s)’]

```
animationScene1 = GetAnimationScene()
animationScene1.UpdateAnimationUsingDataTimeSteps()

timeKeeper1 = GetTimeKeeper()
# create a new 'Calculator'
calculator_tempk = Calculator(Input=spcth)
calculator_tempk.AttributeType = 'Cell Data'
calculator_tempk.ResultArrayName = 'Temperature (K)'
calculator_tempk.Function = 'Temperature (eV)*11604.52500617'
# create a new 'Threshold' For Hotspots
threshold_hotspot = Threshold(Input=calculator_tempk)
threshold_hotspot.Scalars = ['CELLS', 'Temperature (K)']
threshold_hotspot.ThresholdRange = [500, 10000000.0]
# Connectivity of Pores
connectivity_hs = Connectivity(Input=threshold_hotspot)
t_step = timeKeeper1.TimestepValues[::10] # Array of time_steps
t=t_step[-1]
ss=CreateView('SpreadSheetView')
timeKeeper1.Time=t
c_ss=Show(connectivity_hs,ss,'SpreadSheetRepresentation')
Render()

```

Error Thrown:  
`^[[0m^[[31m( 6.042s) [pvbatch.3	]vtkPConnectivityFilter.:504 ERR| vtkPConnectivityFilter (0x40f8930): No points in data set^[[0m `  
`^[[0m^[[31m( 6.0 44s) [pvbatch.11	]	vtkExecutive.cxx:753 ERR| vtkPVCompositeDataPipeline (0x2ec1ff0): Algorithm vtkPConnectivityFilter(0x2ecfd50) returned failure for request: vtkInformation (0x2f696e0)`  
`Debug: Off Modified Time: 181742 Reference Count: 1 Registered Events: (none) Request: REQUEST_DATA ALGORITHM_AFTER_FORWARD: 1 FORWARD_DIRECTION: 0 FROM_OUTPUT_PORT: 0`

---

<div class="post-metadata">

### Author: ![zwilde](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/z/9de053/32.png) [@zwilde](https://discourse.paraview.org/u/zwilde)
#### Post date: [January 28, 2021, 2:02pm UTC](https://discourse.paraview.org/t/connectivity-crashing-on-time-update-in-pvbatch-without-gui/6316/2 "2021-01-28T14:02:54Z")

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Note: I have tried using `connectivity_hs.UpdatePipeline(time=t)` along with updating each filter explicitly. The error is thrown whenever I try to update `connectivity_hs`.