重新调整R ggplotly

Question

I'm having some trouble using the plotly R package. I'm very new to plotly but I loved that I could use ggplot-like syntax so I'm trying to make it work.

I created a faceted plot where you can hover over a datapoint and see details about that record. I'm very happy with the plot, but I'd like to resize it so the y-axis of each plot isn't so short, as in I'd like to adjust the height and width of the overall plot.

As is, I can't figure out how to override the default sizing and I'm pulling my hair out because all of the examples I can find use plot_ly() rather than ggplotly(). I'd rather not rebuild the plot just to adjust the sizing unless I need to.

The code I'm running currently is really simple:

plot <- ggplot(data = counts_country, aes(x = Year, y = Count, color = Region, text = paste("country:", Country))) +
  geom_point(size= 2, alpha = (1/2)) + 
  facet_wrap(~ Region, ncol = 1)

(gg_plot <- ggplotly(plot))

You can see exactly what I'm working with here: http://rpubs.com/dbouquin/180894

I tried adjusting the plot to show two rows of plots but still have trouble because the year labels get smashed together. Resizing seems like all I need.

Answer 1

Here's a workaround. Seems to work in R-Markdown documents which I am guessing is what you need? It still preserves the ggplot2 syntax but uses plotly_build() instead of ggplotly()

---
output: html_document
---

### Using ggplotly()
```{r, warning = F, message = F}
library(plotly)
library(dplyr)

gg <- mtcars %>% 
  ggplot(aes(wt, mpg, color = gear)) + 
  geom_point() + 
  facet_wrap(~hp)

ggplotly(gg)
```

### Using plotly_build()
```{r}
ggp_build <- plotly_build(gg)
ggp_build$layout$height = 800
ggp_build$layout$width = 600

ggp_build
```

Looks like so:

Answer 2

Just like plot_ly() , ggplotly() has a height and a width argument, see ?ggplotly .

Generally speaking it is good practice to always set height / width . If you don't, and you share your plot with someone else, the sizing might be different depending on the context.

This is especially important for ggplotly() . At print time, in order to convert the sizing of things, it has to assume a height / width . If you don't specify these, it uses the size of your R graphics device, and we can't always guarantee the resize behavior is entirely consistent with what you'd get from your R graphics device.

Answer 3

I recommend you update to the latest version of plotly.

To see which version you're on: packageVersion("plotly")

You can then add the width and height parameters to your ggplotly() function calls.

el <- as.data.frame(economics_long[,1:3])
econp <- ggplot(el, aes(date, value, group=variable)) + 
  geom_line()+
  facet_grid(variable ~ ., scale = "free_y")+
  labs(title="US Economic time series")

ggplotly(econp, height = 350, width=600)

An extra suggestion I would add is that if you're running this in a R Markdown document / R Notebook, the figure itself may also need some adjustment so your plotly (which is really a htmlwidget ) will not render with a scroller in an undersized window. This could be done with the fig.width and fig.height parameters: