转换的R图像,以基地64 [英] Convert R image to Base 64
本文介绍了转换的R图像,以基地64的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我一直在做一些决策树的情节所看到如下
I have been doing some decision tree plot as seen below
library(party)
irisct <- ctree(Species ~ .,data = iris)
plot(irisct,type="simple")
但现在我想看到的图像的基础上64,所以我可以保存图形成JSON。
But now I want to see the base 64 of the image so I can save the graph into JSON.
或者有另一种方式来发送R图像到web?
Or is there another way to send R image into the web?
推荐答案
我并不确切地知道你想要什么来完成,但这里有一个例子:
I don't know exactly what you want to accomplish, but here is an example:
# save example plot to file
png(tf1 <- tempfile(fileext = ".png")); plot(0); dev.off()
# Base64-encode file
library(RCurl)
txt <- base64Encode(readBin(tf1, "raw", file.info(tf1)[1, "size"]), "txt")
# Create inline image, save & open html file in browser
html <- sprintf('<html><body><img src="data:image/png;base64,%s"></body></html>', txt)
cat(html, file = tf2 <- tempfile(fileext = ".html"))
browseURL(tf2)
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