How can I create a 2D heatmap grid in R? -


i have data set this

head(data)      v1     v2 [1,]  na    na [2,]  na    na [3,]  na    na [4,]   5     2 [5,]   5     2 [6,]   5     2

where

unique(data$v1)  [1] na  5  4  3  2  1  0  6  7  9  8  unique(data$v2)  [1] na  2  6  1  5  3  7  4  0  8  9

what plot similar this

plot(df$v1,df$v2)

enter image description here

but colour indicator indicating how many match there grid instead of points.

can me?

it looks may want - first tabulate using table(), plot heatmap of table using heatmap():

set.seed(1) data <- data.frame(v1=sample(1:10,100,replace=true),v2=sample(1:10,100,replace=true)) foo <- table(data) heatmap(foo,rowv=na,colv=na)

enter image description here


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