d3heatmap is designed to have a familiar feature set and API for anyone who has used heatmap or heatmap.2 to create static heatmaps. You can specify dendrogram, clustering, and scaling options in the same way.
d3heatmap includes the following features:
- Shows the row/column/value under the mouse cursor
- Click row/column labels to highlight
- Drag a rectangle over the image to zoom in
- Works from the R console, in RStudio, with R Markdown, and with Shiny
Here’s a very simple example (source: flowingdata):
url <-"http://datasets.flowingdata.com/ppg2008.csv" nba_players
You can easily customize the colors using the
colors parameter. This can take an RColorBrewer palette name, a vector of colors, or a function that takes (potentially scaled) data points as input and returns colors.
Let’s modify the previous example by using the
"Blues" colorbrewer palette, and dropping the clustering and dendrograms:
d3heatmap(nba_players, scale = "column", dendrogram = "none", color = "Blues")
If you want to use discrete colors instead of continuous, you can use the
col_* functions from the scales package.
d3heatmap(nba_players, scale = "column", dendrogram = "none", color = scales::col_quantile("Blues", NULL, 5))
d3heatmap(nba_players, colors = "Blues", scale = "col", dendrogram = "row", k_row = 3)
For issue reports or feature requests, please see our GitHub repo.