R中的真实热图 [英] A true heat map in R

问题描述

我想在R中创建一个真实的热图，就像天气图一样，只是我的数据要简单得多.

I'd like to make a true heat map in R, much like a weather map, except my data is much more simple.

请考虑以下3d数据:

x <- c(1,1,1,1,1,2,2,2,2,2,3,3,3,3,3,4,4,4,4,4)
y <- c(1,2,3,4,5,1,2,3,4,5,1,2,3,4,5,1,2,3,4,5)
z <- rnorm(20)

z是彩色的.

以下是此数据的离散热图:

Here is what a discrete looking heatmap would like for this data:

如何制作热图，以使颜色平滑，并基于z值将2d空间填充为平滑的颜色.

How can I make a heatmap such that the colors are smooth and the full 2d space is filled with smoothed out colors based on the z values.

请提供示例代码，而不仅仅是可能会使我更加困惑的链接，而且我可能已经访问了该站点.谢谢:)

Please include sample code, not just a link that will probably confuse me even more, and I've probably already visited that site anyhow. Thanks :)

推荐答案

使用以下内容:

interp

image.plot

x <- c(1,1,1,1,1,2,2,2,2,2,3,3,3,3,3,4,4,4,4,4)
y <- c(1,2,3,4,5,1,2,3,4,5,1,2,3,4,5,1,2,3,4,5)
z <- rnorm(20)

library(fields)
library(akima)

s <- interp(x,y,z)
image.plot(s)

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