Print Cell Labels in Heatmap

[ndellomoUber]

Is it possible to add data labels in each cell of the heatmap? If not, is this something that can easily be built?

[boyiguo1]

I believe there is a parameter called "cellnote", where you can pass in the labels in the format of a matrix whose size matches the data matrix you put in d3heatmap. Then the label you desire will show in the hover. Is it what you want?

[JohnMCMa]

I mean he means having the data printed directly on to the heatmap cell. cellnote just replaces the x value on mouseover.

[ebendutoit]

Is there a way to achieve this? Values written directly in the cells?

[talgalili]

I will try to add this to heatmaply in the future (I believe it shouldn't be too hard to do there, since it would simply mean adding a paramater that adds another ggplot2 text layer).
talgalili/heatmaply#42

Cheers,
Tal

[talgalili]

Hi @ndellomoUber

The heatmaply R package is a new implementation of interactive cluster heatmaps in R which relies on the plotly R package. This is based on a fork of my work in d3heatmap.

The package is availabale from CRAN:
https://cran.r-project.org/package=heatmaply

The feature you've requested is now available by using the following code:

library(heatmaply)
heatmaply(mtcars, draw_cellnote = TRUE)

(specifically you should get the github version since it has the most updated color interpolation for this)