# SliceAlongPolyLine filter direction
**URL:** https://discourse.paraview.org/t/slicealongpolyline-filter-direction/11641
**Category:** ParaView Support
**Created:** [March 16, 2023, 4:15pm UTC](https://discourse.paraview.org/t/slicealongpolyline-filter-direction/11641 "2023-03-16T16:15:42Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@CJBright](https://discourse.paraview.org/u/CJBright)
#### Post date: [March 16, 2023, 4:15pm UTC](https://discourse.paraview.org/t/slicealongpolyline-filter-direction/11641/1 "2023-03-16T16:15:42Z")
Hi there,
I’m post-processing some cardiovascular simulations using Windows 10, PV 5.11.0.
I would like to take a slice through the centre of a vessel to plot data-arrays like the wall-shear-stress at the points intersected by the slice.
However, my vessel does not curve in a singular direction, so a single slice is hard to correctly capture an accurate ‘half-way’ slice across the whole vessel’s length.
I paired the SliceAlongPolyLine filter with a centreline file I have for the vessel, and it produced very similar behaviour to what I want, slicing the length of the vessel through its centre.
However, the filter took it’s slice in the Z direction - up and down through the vessel along its length.
I would prefer a horizontal slice for the metrics I would like to investigate.
Is there any way to change the behaviour of the filter to incorporate this?
The data is too large to upload here, so please find a GDrive link (let me know if another method is preferred for file sharing) containing a state file with volume, surface, and centreline files to demonstrate visually what I mean. I’ve used the volume file in the state to help visualise the slice direction.
Best wishes,
Charlie
[https://drive.google.com/drive/folders/1tX\_tX\_ZrMvo8Nqe2PZ39slDZ-TqizFoQ?usp=share\_link](https://drive.google.com/drive/folders/1tX_tX_ZrMvo8Nqe2PZ39slDZ-TqizFoQ?usp=share_link)
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### Author:  [@CJBright](https://discourse.paraview.org/u/CJBright)
#### Post date: [March 21, 2023, 2:50pm UTC](https://discourse.paraview.org/t/slicealongpolyline-filter-direction/11641/2 "2023-03-21T14:50:20Z")
To those who might be facing a similar problem -
- Apply the Transform filter to your dataset such that the Z-axis aligns with the direction you want to cut.
- Apply the same Transform to your polyline.
- Apply the SliceAlongPolyLine filter to the transformed datasets.
Best,
Charlie