Key is to add a row identifier to the data and shape it "longer". edit Dec 2022 to make code reproducible with R 4.2.2 / ggplot2 3.4.0 and reflect changes in tidyverse semantics

Sep 25, 2010 · And then make a heatmap that has each of the values in the now colored cells. Making a heatmap is easy: > heatmap( partb, Rowv=NA, Colv=NA, col = heat.colors(256), margins=c(5,10)) But for the life of me I can't figure out how to put the value in each of the cells. What am I missing? Surely this is a common thing.

Jul 8, 2015 · I can believe that the heatmap is, at least, taking a long time, because heatmap does a lot of fancy stuff that takes extra time and memory. Using dat from @bill_080's example:

Jun 27, 2014 · I like to be able to create a map heatmap based on State and Count. I used qplot as below, but no map came ...

May 4, 2017 · I'm switching from Mathematica to R but I'm finding some difficulties with visualizations. I'm trying to do a heatmap as follows: short penetration scc pi0 1 0 0 0.0025...

Aug 7, 2019 · How to plot a heatmap and its legend, i.e. a bar with the color scale representing the minimum and the maximum value that are plotted? I read the help of the heatmap() function, and using base R as explained here: r-graph-gallery.com heatmaps. this is what I'm doing

Jan 15, 2015 · You are not specifying Rowv=FALSE and by default the rows are reordered (in heatmap.2 help, for parameter Rowv: determines if and how the row dendrogram should be reordered. By default, it is TRUE, which implies dendrogram is …

My main problem is that it's tricky to combine visual flexibility of solutions available in lattice levelplot() or basic graphics image(), with effortless clustering of basic's heatmap(), pheatmap's pheatmap() or gplots' heatmap.2(). It's a tiny detail I want to change - diagonal orientation of labels on x-axis.

Sep 10, 2021 · I'm aware of the function "reorder.dendrogram" (from this post: R - heatmap.2: reorder rows and columns) that can flip the branches, but wasn't able to make it work out. I think on of the issue is that I'm not able to access (or find) the object plotting the upper dendrogram. Thanks a lot! Valérian

Jul 20, 2012 · R ggplot2 heatmap, force discrete scale with custom range, add grid to map. 2. ggplot2 scale fill gradient ...