mapshot | allows you to put static maps on a webpage | Map library
kandi X-RAY | mapshot Summary
kandi X-RAY | mapshot Summary
this is a small library that allows you to put static maps on your page:.
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QUESTION
I'm exporting a leaflet map from a Shiny app. Everything works fine, until I want to add a legend for my colour-coded points (based on a variable). The colour-coding works fine, and adding the usual legend with leafletProxy
works fine, but to have the export working, I need to use a custom-defined function to create the map, and that seems to break when I use my usual addLegend
for the colour palette.
Any advice would be appreciated!
...ANSWER
Answered 2021-Mar-29 at 16:31Apparently it just needed a small tweak from =~df.in$Size
to =df.in$Size
. This now plots and downloads ok.
QUESTION
I have an app with a map that is being downloaded. I'm stumped as to why the spatial extent / zoom of the downloaded image is so different from what is being displayed on the screen. Looking for any suggestions to make the output match as close as possible the map displayed in the app itself...
...ANSWER
Answered 2021-Mar-25 at 03:39You can set the vheight
and vwidth
parameters for webshot()
:
QUESTION
I have a shiny app I'm using to visualize a variety of data. One of the plots produced is a map. I'm allowing the user to download all the plots at once as a single Word doc using a knitted document. I would like to include the map in the document, but can't figure out how to do that. I can export a png (or pdf) of the map itself with a separate downloadHandler
, but ideally want the map included in the main doc. Any help would be high appreciated... If anyone has tips for the extent of the downloaded map (which does not seem to match the extent of the map on the screen), that would also be awesome.
I'm open to using officer
to import the downloaded map into the newly created doc file, but can't figure out how to a) do it with a single downloadHandler
, and b) tell R how to handle the name of the latest download of the map.
ANSWER
Answered 2021-Mar-23 at 21:10As you haven't included the .docx
template, I've use a html
file as example.
My strategy is to save the map as a temporary file where I know the path to. Then I can pass the path as an argument to the .Rmd
file and include the image with knitr::include_graphics
App:
QUESTION
I've created a R markdown report where the sections and tabsets are dynamically created.
I have an issue where the Leaflet maps are not being generated in the output, but rather a blank white space. They do however render in R studio.
Here is an image showing how the output currently looks, and how it should look.
Here is the code i've tried:
...ANSWER
Answered 2020-Aug-20 at 09:13This is a similar problem as described here with Highcharter
Try:
QUESTION
I have a shiny app where users create maps and then can download them. Locally, this works, but when I have deployed it to shinyapps.io, the download feature no longer works and it indicates it is downloading an HTML document rather than a png.
The one thing I thought is that it could be around the need to run webshot::install_phantomjs()
, which I have done locally, but it doesn't seem right/desirable to have this as a line in the app itself as then it will download stuff onto someone else's computer, take longer, and be inefficient if it keeps downloading every time.
This is a short example of the code I have to make/download a map:
...ANSWER
Answered 2019-Dec-29 at 17:21My solution to this has been to add webshot::install_phantomjs()
to my global file. I was considering this originally but was concerned about what it would do (as outlined in my post). However, adding it does not seem to create the adverse effects I was worried about, so adding this answer as an option for people facing the same problem.
QUESTION
I want to create a Word file with a text paragraph on the left and an image of a leaflet-map on the right.
So far I can do it, but I would also like to make a border around the whole leaflet image.
The border in my example is only half the size of the image and thus it seems like only the left side has borders.
How can I make the border as big as the image?
...ANSWER
Answered 2019-Sep-03 at 12:31I was able to do it with flextable
, vline
and hline
. One disclaimer, since I wasn't able to use the hline
for i=0
, there is an empty line in the table for i=0
.
QUESTION
Following on from this question, I am looking to save and download a leaflet map as a png or jpeg image. I have the following code but I keep getting an error.
...ANSWER
Answered 2017-May-30 at 11:56May be this would help:
QUESTION
This question is a follow-up to the questions How to save a leaflet map in Shiny, and Save leaflet map in Shiny.
I add a toolbar to draw shapes/points on the map that is addDrawToolbar
in the leaflet.extras package. That lets users to draw lines, shapes, ... interactively. In the end I want one to be able to save the map with the drawn shapes as a pdf or png.
I have coded up the following making use of the answer to the question: How to save a leaflet map in Shiny. But it does not help achieve my goal.
Is there anyone who can help me?
...ANSWER
Answered 2018-Dec-14 at 15:56Apparently the mapshot
function is not aware of drawn polygons and just stores the clean leaflet-map, as it launches an isolated background process which captures the webshot.
I would propose this workaround, which captures the whole screen (using this batch-file) and saves it as png. (only for Windows)
This is not very beautiful as it will also capture the windows and browser menu bars, although that could be adapted in the batch-file.
The batch-file must be in the same directory and must be named screenCapture.bat .
QUESTION
I have a shiny app that displays a map from the leaflet package. I am interested in saving the map from the shiny app as either a PNG file or HTML file. I have managed to save it as PNG file when running locally and opening the shiny app on the browser with the code below :
...ANSWER
Answered 2018-Sep-07 at 10:19I am not sure if you were asking this independently or as part of the app but if you want to save the map as an interactive HTML just run this part of your code and select the Export option in the Viewer pane and then Save as Web Page...
QUESTION
I'm working on a project in which I would like create and save WebGLHeatmap images from the leaflet.extras in an automated way. Unfortunately, while the following code:
...ANSWER
Answered 2018-Jul-16 at 23:06This is a bit of a hack, with a call to system
but I think that you can make this work with RSelenium and your screenshot software that comes with your OS:
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