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---
layout: page
title: "Bottleneck distance"
meta_title: "Bottleneck distance"
teaser: ""
permalink: /bottleneckdistance/
---
{::comment}
Leave the lines above as it is required by the web site generator 'Jekyll'
{:/comment}
## bottleneck_distance ##
This program computes the Bottleneck distance between two persistence diagram files.
**Usage**
```
bottleneck_distance <file_1.pers> <file_2.pers> [<tolerance>]
```
where
* `<file_1.pers>` and `<file_2.pers>` must be in the format described [here]({{ site.officialurl }}/doc/latest/fileformats.html#FileFormatsPers).
* `<tolerance>` is an error bound on the bottleneck distance (set by default to the smallest positive double value).
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