---
title: 3.2.2 Change the overall isovist parameters
description: "A series of parameters can be set for isovist calculation. Each parameter is controlled by a slider in the isovist analysis menu as follows: - Isovist sweep (angle of view). - Direction (heading that the isovist is ‘looking’ in). -…"
url: "https://isovists.org/user-guide/3-2-2-change-the-overall-isovist-parameters/"
updated: "2021-04-05"
category: 3 How To... / 3.2 Run Primary Analysis
---

# 3.2.2 Change the overall isovist parameters

A series of parameters can be set for isovist calculation. Each parameter is controlled by a slider in the isovist analysis menu as follows:

- Isovist sweep (angle of view).
- Direction (heading that the isovist is ‘looking’ in).
- Far rim (how far the isovist can ‘see’).
- Near rim (an internal horizon that sets the nearest visible edges of the isovist). 

Setting a parameter affects all latter field analysis calculations and automatically resets all analysis. 

*Below: Editing the parameters of isovists in Mies' **Barcelona Pavilion*

[http://player.vimeo.com/video/281171423?autopause=0&autoplay=1&muted=1&loop=1&title=0byline=0&portrait=0](http://player.vimeo.com/video/281171423?autopause=0&autoplay=1&muted=1&loop=1&title=0byline=0&portrait=0)