echarts4r:放大d3heatmap

Question

是否有类似于echarts4r ( d3heatmap )的缩放热图的方法？(https://github.com/rstudio/d3heatmap)。其目的是使用echarts4r中的回调来触发d3heatmap (据我所知)在热图上单击和悬停时发生的事件。

此代码是从(https://echarts4r.john-coene.com/articles/chart_types.html#heatmap)中复制的，并添加了画笔。画笔显示并可以选择缩放窗口，但是图表不会缩放。

v <- LETTERS[1:10]
matrix <- data.frame(
  x = sample(v, 300, replace = TRUE), 
  y = sample(v, 300, replace = TRUE), 
  z = rnorm(300, 10, 1),
  stringsAsFactors = FALSE
) %>% 
  dplyr::group_by(x, y) %>% 
  dplyr::summarise(z = sum(z)) %>% 
  dplyr::ungroup()

matrix %>% 
  e_charts(x) %>% 
  e_heatmap(y, z) %>% 
  e_visual_map(z) %>% 
  e_title("Heatmap") %>%
  e_brush() # add the brush

Answer 1

在echarts中，刷子和缩放是两种不同的东西:使用e_datazoom代替。

v <- LETTERS[1:10]
matrix <- data.frame(
  x = sample(v, 300, replace = TRUE), 
  y = sample(v, 300, replace = TRUE), 
  z = rnorm(300, 10, 1),
  stringsAsFactors = FALSE
) %>% 
  dplyr::group_by(x, y) %>% 
  dplyr::summarise(z = sum(z)) %>% 
  dplyr::ungroup()

matrix %>% 
  e_charts(x) %>% 
  e_heatmap(y, z) %>% 
  e_visual_map(z) %>% 
  e_title("Heatmap") %>%
  e_datazoom() # use zoom