在 R 中放大 dyGraphs 并将图像另存为 png

Question

我想放大 dygraphs 并将图像保存为 png。我已经使用 dygraph 库绘制了图形并将其保存为 png 但它没有放大版本。

library("webshot")
library("htmlwidgets")
lungDeaths <- cbind(ldeaths, mdeaths, fdeaths)
dygraph(lungDeaths, main = "Deaths from Lung Disease (UK)") %>%
  dyHighlight(highlightCircleSize = 5, 
              highlightSeriesBackgroundAlpha = 0.2,
              hideOnMouseOut = FALSE)

saveWidget(ab, "/path/", selfcontained = TRUE, libdir = NULL)

basePng <- paste("images",paste(file,".png"), sep='/')
webshot::webshot("/path/",file=basePng)

但我想要如下图（放大）：

我想绘制放大的 dygraph 超过 1000 个文件。谁能帮我解决这个问题？

Answer 1

希望这个回答能对大家有所帮助，

我在图上用dyRangeSelector()到"zoom"，然后webshot保存。

library(webshot)
library(htmlwidgets)
library(dygraphs)

# webshot::install_phantomjs()

lungDeaths <- cbind(ldeaths, mdeaths, fdeaths)
dygraph(lungDeaths, main = "Deaths from Lung Disease (UK)") %>%
        dyRangeSelector( dateWindow = c("1974-03-1","1974-06-10")) %>%
        dyHighlight(highlightCircleSize = 5, 
              highlightSeriesBackgroundAlpha = 0.2,
              hideOnMouseOut = FALSE)

saveWidget(ab,file ="ab.html", selfcontained = TRUE, libdir = NULL)

webshot(url = "ab.html",file="ab.png")

在 R 中放大 dyGraphs 并将图像另存为 png

Zoom In dyGraphs in R and save image as png

r

zooming

dygraphs