我有一个看起来像这样的图表：
[初始图表][1]
我尝试使用这段代码来增加星号的大小：
```R
ggplot(data, aes(x = Cohort, y = C1M_HP, fill = Cohort)) + geom_violin(width = 0.5) +
geom_boxplot(outlier.shape = NA, width = 0.2, coef = 0) + 
geom_signif(comparisons = list(c("Control","Dup")), map_signif_level=TRUE, textsize = 6.25) + 
scale_fill_manual(values = c('#AED6F1', '#F1948A')) + theme_minimal() + 
geom_jitter(alpha = 0.8, width = 0.1)

请注意，我已经将代码中的HTML实体字符（如`"`和`'`）翻译为相应的引号。
<details>
<summary>英文:</summary>
I have a figure that looks like this:
[Initial Plot][1]
I am trying to increase the size of the asterisks, using this code:

Unfortunately, this results in the asterisks getting cut off, like so:
[Increased asterisk size][2]
I have tried using `plot.margin` to change the margin sizes, but this is not correct. 
How do I add extra 'empty space' around the edges of my plot to prevent this issue?
  [1]: https://i.stack.imgur.com/DFVT5.png
  [2]: https://i.stack.imgur.com/59Gj0.png
</details>
# 答案1
**得分**: 1
One way is to use `coord_cartesian(ylim = c(ymin, ymax))`
```R
使用 `coord_cartesian(ylim = c(ymin, ymax))` 这种方式。