Saving Leaflet Output as HTML

Saving leaflet output as html

Something like:

library(htmlwidgets)
saveWidget(m, file="m.html")

seems to work on most widgets.

Saving a leaflet map as an html file

You appear to be using the tmap library. For that you could use the function detailed here:

library(tmap) 
save_tmap(my_interactive_map, "kansas_corn2.html")

How to save Leaflet in R map as png or jpg file?

This very nice workaround emerged in response to a question asked a little later here on SO. Note that you are required to install PhantomJS to get the following code to work.

## install 'webshot' package
library(devtools)
install_github("wch/webshot")

## load packages
library(leaflet)
library(htmlwidgets)
library(webshot)

## create map
m <- leaflet() %>% addTiles()

## save html to png
saveWidget(m, "temp.html", selfcontained = FALSE)
webshot("temp.html", file = "Rplot.png",
        cliprect = "viewport")

And here's the resulting image.

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Update:

Now that webshot has been officially released on CRAN and with the introduction of mapshot in the mapview package, this manual workaround is no longer required. Now, the code simply goes like this:

library(mapview)

## 'leaflet' objects (image above)
m <- leaflet() %>% addTiles()
mapshot(m, file = "~/Rplot.png")

## 'mapview' objects (image below)
m2 <- mapview(breweries91)
mapshot(m2, file = "~/breweries.png")

How to successfully save leaflet map in a .png image?

Use the new package webshot2, which uses the Chrome or Chromium headless browser instead of phantomjs.

How to save a leaflet map (created with rMaps) as a html widget?

Although not a direct answer to your question, I suggest an alternative approach that yields a similar result:

library(leaflet)
library(htmlwidgets)
leaflet() %>% 
  addProviderTiles("MapQuestOpen.OSM") %>% 
  setView(-95.3632715, 29.7632836, zoom = 10) -> m 
saveWidget(m, tf <- tempfile(fileext = ".html"))

or, using rMaps:

library(plyr)
library(rCharts)
library(rMaps)
data(crime, package = 'ggmap')
crime_dat = ddply(crime, .(lat, lon), summarise, count = length(address))
crime_dat = toJSONArray(na.omit(unname(crime_dat)), json = F)

L2 <- Leaflet$new()
L2$setView(c(29.7632836,  -95.3632715), 10)
L2$tileLayer(provider = "MapQuestOpen.OSM")
# Add leaflet-heat plugin. Thanks to Vladimir Agafonkin
L2$addAssets(jshead = c(
  "http://leaflet.github.io/Leaflet.heat/dist/leaflet-heat.js"
))
# Add javascript to modify underlying chart
L2$setTemplate(afterScript = sprintf("
<script>
  var addressPoints = %s
  var heat = L.heatLayer(addressPoints).addTo(map)           
</script>
", rjson::toJSON(crime_dat)
))

L2$save(tf <- tempfile(fileext = ".html"),standalone=TRUE)

Using images in pop-up in leaflet that remain within the HTML

You can encode the image into a URL using base64 (e.g see this web service)

Example Image: https://cdn.sstatic.net/Sites/stackoverflow/Img/favicon.ico?v=ec617d715196

Example HTML tag:

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/>

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