Heat map View - ActiveDataBio/adbio_tutorial GitHub Wiki

##What is the Heat map?

A heat map is a graphical representation of data where the individual values contained in a matrix are represented as colors. Following convention, colors are scaled blue to red representing low to high abundance of the measurement. See here or here for literature about heat maps in biological data analysis.

• More info about heat maps

• Heat map tutorial

##What are the rows?

Rows in this Heatmap are molecular measurements, most commonly proteins, transcripts, or metabolites. The dendogram to the left of the rows shows a clustering of the measurements, with the co-expressed entities being grouped together. Each node on the dendrogram is interactive and can be clicked to interact with the data.

##What are the columns?

Columns in the Heat map are samples. Meta data describing these samples is part of the information that you give to ADBio during project initialization. Above the columns is a dendrogram showing the clustering of samples. Nodes (blue circles) in the dendrogram are interactive and can be clicked to interact with the data.

##How can I customize my own R snippet?

When interacting with the Heat map, you can customize the statistical tests used to identify significant meta data. The specific statistical test associated with a given meta-data category can be customized to suit your specific project needs. Please refer to this link.