httr | httr : a friendly http package for R | HTTP library
kandi X-RAY | httr Summary
kandi X-RAY | httr Summary
The aim of httr is to provide a wrapper for the curl package, customised to the demands of modern web APIs. httr wouldn't be possible without the hard work of the authors of curl and libcurl. Thanks! httr is inspired by http libraries in other languages, such as Resty, Requests and httparty.
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Trending Discussions on httr
QUESTION
I am analysing some fmri data – in particular, I am looking at what sorts of cognitive functions are associated with coordinates from an fmri scan (conducted while subjects were performing a task. My data can be obtained with the following function:
...ANSWER
Answered 2022-Feb-26 at 12:14Not sure to understand. Can't you proceed like this:
QUESTION
I have code that scrapes a website but does so in a way that after so many scrapes from a run, I get a 403 forbidden error. I understand there is a package in R called polite that does the work of figuring out how to run the scrape to the hosts requirements so the 403 won't occur. I tried my best at adapting it to my code but I'm stuck. Would really appreciate some help. Here is some sample reproducible code with just a few links from many:
...ANSWER
Answered 2022-Feb-22 at 13:44Here is my suggestion how to use polite in this scenario. The code creates a grid of teams and seasons and politely scrapes the data.
The parser is taken from your example.
QUESTION
I am having trouble getting raster data in R from the ArcGIS REST API. It is located at the endpoint https://maps.vcgi.vermont.gov/arcgis/rest/services/EGC_service/IMG_VCGI_LIDARNDSM_WM_CACHE_v1/ImageServer and I want to fetch just the data for my area of interest. I can successfully load the data in QGIS as a web coverage service using the url "https://maps.vcgi.vermont.gov/arcgis/services/EGC_services/IMG_VCGI_LIDARNDSM_WM_CACHE_v1/ImageServer/WCSServer", but want something I can turn into a raster layer or raster brick in R.
I would prefer a high-level method and have tried the arcpullr
package, using an sf
polygon object of my area of interest to define the bounding box (aoi
in the code below, which is a simple feature collection with 1 feature and 1 field;
Bounding box: xmin: 499682.2 ymin: 208467.7 xmax: 503271.3 ymax: 212056.7;
Projected CRS: NAD83 / Vermont, 32145). This returns an empty raster brick (all values are NA) in the correct location:
ANSWER
Answered 2022-Feb-21 at 11:28The problem you are experiencing is that you are not using the right crs
. You simply need to convert your aoi
from EPSG: 32145
to EPSG: 3857
(the spatial projection information is provided on the Service webpage).
So, please find below a little reprex.
Reprex
- Code
QUESTION
Hi I used the httr library to get some data from an API. Using this code
...ANSWER
Answered 2022-Feb-17 at 23:27with your suggestion I used the jsonlite package and it was really easy
this game the results I needed
QUESTION
Code that previously worked now throws an error due to the server requesting HTTPS calls and no longer accepts HTTP.
Can this code me modified to work? Or is a new process required for encrypted HTTPS?
Thank you!
...ANSWER
Answered 2022-Feb-13 at 17:27Yes, it can - you just use https in the URL.
The shortest demonstration I could think of is:
QUESTION
So I have the following data. In this dataframe I have a username, date, and a list of packages. My goal is to transform that column packages
into a format I can analyze.
ANSWER
Answered 2022-Feb-07 at 22:31A solution, based on tidyr::separate
:
QUESTION
OS: Ubuntu 20.04.3 LTS
I am currently install the languageserver packages on R, to use the R VS Code extension.
ProblematicBut when I execute the install.packages("languageserver")
in R with the Ubuntu's terminal, I have this error:
ANSWER
Answered 2022-Feb-02 at 11:33you should install libcurl4-openssl-dev
in Ubuntu, try the following codes in Ubuntu terminal
:
QUESTION
I'm new to R. I'm looking for a script to connect to an Azure Table, and I found some useful information in this thread: Connecting to Azure Table Storage in R
However, when I run the script I get an error very similar to the one that the user posting the question had, and I cannot figure out what's wrong.
This is the code I used (credentials have been modified):
...ANSWER
Answered 2022-Jan-18 at 15:38Thank you for your help!
So this is the code that works:
QUESTION
I'm trying to write a distill::distill_article
blogpost which requires the use of LaTeX math environments e.g. theorem, lemma, proof etc.
I have tried to follow these instructions and also these instructions but am unable to render the theorem
environments whether using LaTeX
blocks or rmarkdown blocks.
I also note that a similar question was asked about specifically using distill::distill_article
in bookdown
. This fix did not work either. Note that my use-case is to use the bookdown theorem environments inside distill::distill_article
, not the other way around.
Here is a reprex for the issue:
...ANSWER
Answered 2022-Jan-03 at 05:49Add this after the YAML and then the method between :::
will work:
QUESTION
How do I efficiently handle multiple location requests to the HERE API?
I am new to GET requests and REST generally, but I have a need to get location data, and I'm experimenting with the HERE API. I'm doing this in R, but that fact is irrelevant to my question.
This works: ...ANSWER
Answered 2021-Dec-22 at 03:21If you want to use the HERE Geocoding and Search API, looping through your data to send individual GET requests for each address is a perfectly valid approach, just make sure that you don't exceed the maximum allowed number of requests per second (RPS) for the plan you have (5 RPS for the Geocoding and Search API in the Freemium Plan, for example); otherwise your queries will result in error code 429 "Too Many Requests" and you'll have to send them again.
Alternatively, you can use the HERE Batch Geocoder API, which is designed to process large datasets (up to 1 million records for geocoding or reverse geocoding) with a single API call. Using this service consists of 3 steps:
- Send a single POST request with all the data you want to geocode or reverse geocode.
- Call the status endpoint to monitor the status of the job you submitted. You might want to make this type of call periodically until the response indicates that your job is complete and your output is ready to be downloaded.
- Download your results.
Here's an example of how to use this service; notice that this API supports POST requests instead of GET.
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