---
title: "Best Cylinder"
slug: "cyclone-3dr-bestcylinderc"
updated: 2026-09-07T11:51:53Z
published: 2026-09-07T11:51:53Z
canonical: "rcdocs.leica-geosystems.com/cyclone-3dr-bestcylinderc"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://rcdocs.leica-geosystems.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Best Cylinder

![CmdBestCylinder.svg](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/CmdBestCylinder.svg)

This command computes the best cylinder from the input objects.

> [!TIP]
> ### Requirements
> 
> Select the object on which you want to compute a best cylinder and launch the command.

---

1. You can force the **radius**(or the **diameter**), the **center** or the **axis**:
  1. Enter the XYZ coordinates in the edit controls or click on the icon ![AddPoint.svg](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/AddPoint.svg) to click a [point](/v1/docs/cyclone-3dr-enteringpointprocedure) in the scene.
  2. Enter the XYZ values of the vector in the edit controls or click on the icon ![Normal1.svg](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/Normal1.svg) to define a [direction](http://wiki-tdg.eu.hexagonmetrology.com:8090/display/Hlp2025x1/DefineNormalDirection) in the scene.
2. You can remove noisy points using **Eliminate worst points**. A new shape is computed every time you modify the value.
3. If you use several input objects, you can choose to compute **One shape per input** or a best shape for all objects together.

> [!WARNING]
> ### Notes
> 
> If the number of points is small enough, the software calculates directly the best shape otherwise you must click the **Preview** button to launch the calculation.

> [!TIP]
> ### Tips & Tricks
> 
> Sometimes, when you compute a cylinder, an incorrect extraction may occur. In this case, you can try to “help” the software by entering an approximate axis:
> 
> - Adjust the 3D view so that the view direction nearly corresponds to the cylinder axis.
> - Check **axis** and define the direction with the button ![ScreenNormal.png](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/ScreenNormal.png) ([normal to screen)](/v1/docs/cyclone-3dr-definenormaldirection). The extraction should be more accurate.