[R] Heatmap without levelplot

[Uwe Ligges]

Antje wrote:
> Hi there,
> 
> as I'm not sure to understand the coloring levelplot uses, I'm looking 
> for another easy way to create a heatmap like this:
> 
> library(lattice)
> mat <- matrix(seq(1,5, length.out = 12), nrow = 3)
> mat[1,2] <- 3.5
> 
> my.at <- seq(0.5,5.5, length.out = 6)
> my.col.regions <- rainbow(5)
> 
> graph <- levelplot(t(mat[nrow(mat):1, ] ), at = my.at, col.regions = 
> my.col.regions)
> print(graph)
> 
> Can anybody help me with some hints or little examples?


Dear Antje,

since you are asking the same question again now, maybe you can explain 
what you are going to get? In fact, I do not undertsand where your 
problem is. R places the colors according to the values in your matrix 
very well including the legend and I thought up to today that the plot 
is self explaining.

Best wishes,
Uwe Ligges




> Antje
> 
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