Question

我在文本文件（data.csv）中有（x，y）数据我想在R中制作热像图https://www.youtube.com/watch?v=cFGu3O30a3w enter image description here

Answer 1

那样的东西？

library(tidyverse)
library(echarts4r)
df<-data.frame(x=sample(50,5000,replace = T),
               y=sample(50,5000,replace = T))

df%>%
  count(x,y)%>%
  e_chart(x)%>%
  e_heatmap(y,n) %>% 
  e_visual_map(n)%>%
  e_title("Heatmap")

Answer 2

您还可以创建2D直方图，如下所示：

library(gplots)

# number of bins in both dimensions
resolution <- 50

# toy data (sorry about copying from jyjek)
df <- data.frame(x=sample(resolution,5000,replace = T),
           y=sample(resolution,5000,replace = T))

# the shown example has "jet" palette
jet.colors <-
  c("#00007F", "blue", "#007FFF", "cyan", "#7FFF7F", "yellow", "#FF7F00", "red", "#7F0000")

# the example has no margins           
par(mar=c(0,0,0,0))         

# plot the histogram without axes
hist2d(df, nbins=resolution, xaxt="n", yaxt="n", col=jet.colors)

R中轨迹数据的热图

2 个答案: