1
根據documentationfig.retina
在knitr
中的默認值是1的數值。然後,我預計將設置保留爲空(例如下面的示例1 )將產生與下面的示例2完全相同的圖像,其中我指定fig.retina=1
。相反,我發現默認(#1)創建一個60kb的圖像,並設置fig.retina=1
產生一個25kb的圖像。在`knitr`塊中使用`fig.retina`會導致意想不到的數字尺寸
也許明確設置fig.retina
覆蓋其他設置或東西?有沒有人有解釋爲什麼留空塊選項空白的結果是一個數字超過設置fig.retina=1
(這應該是默認值)的兩倍?
---
title: "Untitled"
output:
html_document:
self_contained: false
---
```{r onefile_figretinaDefault}
#1. this is 60kb on disk
library(ggplot2)
ggplot(cars, aes(speed, dist)) + geom_point()
```
```{r onefile_figretina1, fig.retina=1 }
#2. this is 25kb on disk
ggplot(cars, aes(speed, dist)) + geom_point()
```
```{r onefile_figretina2, fig.retina=2 }
#3. this is 60kb on disk
ggplot(cars, aes(speed, dist)) + geom_point()
```
```{r onefile_figretinaNULL, fig.retina=NULL}
#4. this is 25kb on disk
ggplot(cars, aes(speed, dist)) + geom_point()
```
```{r onefile_figretina1_owNULL, out.width = NULL, fig.retina=1 }
#5. this is 25kb on disk
ggplot(cars, aes(speed, dist)) + geom_point()
```
是的,令人困惑!感謝您的澄清。 – ZRoss
我同意這些差異是令人困惑的,但它們仍然記錄在案:http://rmarkdown.rstudio.com/authoring_migrating_from_v1.html –