divide.qmd

---
title: "Divide"
author: "Cox Lab"
format: 
  html:
    toc: true
    toc-depth: 4
    toc-expand: false
    number-sections: true
    number-depth: 4
editor: source
date: today
bibliography: references.bib
---

# General

-   **Type:** - Matrix Processing
-   **Heading:** - Normalization
-   **Source code:** [Divide.cs](https://github.com/JurgenCox/perseus-plugins/blob/master/PerseusPluginLib/Norm/Divide.cs)

# Brief description

Divide all values by the specified quantity calculated on each row/column.

Output: Normalized expression matrix.

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# Parameters

## Matrix access

Specifies whether the division is performed on rows or columns (default: Rows).

## Divide by what

Defines by what value all entries in expression columns should be divided (default: Median).
The divisor can be selected from a predefined list:

-   Sum
-   Mean
-   Median
-   Most frequent value
-   Tukey's biweight

# Parameter window

![](images/normalization-divide-edited.png)