RJSON | Recursive JSON is data format and compressor | JSON Processing library
kandi X-RAY | RJSON Summary
kandi X-RAY | RJSON Summary
RJSON (Recursive JSON) converts any JSON data collection into more compact recursive form. Compressed data is still JSON and can be parsed with JSON.parse. RJSON can compress not only homogeneous collections, but any data sets with free structure. RJSON is single-pass stream compressor, it extracts data schemes from document, assign each schema unique number and use this number instead of repeating same property names again and again. Each data schema is unique set of keys ordered with natural sort (alphabetically). After packing and unpacking order of keys may be changed but restored document will be fully identical to the original document. More information about RJSON data format you can find at my blog post Recursive JSON (RJSON) introduction published on IMO best social news RSS-reader. There is also available RJSON demo where you can convert any JSON data into RJSON format, decode result and ensure that it matches original JSON data. Bellow you can see same document in both forms. RJSON supports all types of data that JSON itself supports. When you will try to pack unsupported by JSON data types (for example Date) you may get unexpected results (see the discussion about this issue, look at test/tests.js for the examples). Please ensure before packing that your data contains only primitive values, arrays and plain objects. The above JSON vs RJSON example is based on the data structure from the JSON DB: a compressed JSON format. It's concept is implemented in JSONH - JSON Homogeneous Collections Compressor. RJSON provides similar level of data compression like JSONH does, but RJSON isn't limited to homogeneous collections only. The library file rjson.js have no external dependencies but if you use NodeJS you can install it with npm install rjson. To run unit tests just open test/index.html in your browser or execute npm test in the console.
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Trending Discussions on RJSON
QUESTION
I am reading a json file as a response from api which is nested and when I look at them in a dataframe/table structure format then there are data frame under data frame.
I have saved file at github location.
...ANSWER
Answered 2021-May-26 at 07:50You can unnest the sessions variable and the slots variable within it to get a long dataframe.
QUESTION
I am new to api stuff and have come across a small piece of code in python to retrieve data which I would like to replicate in r:
python code:
...ANSWER
Answered 2021-May-25 at 20:12You make headers but never include them in your call to GET. Use them there.
QUESTION
I have a dataset with columns "state_name", "county_name", "value1", "value2", "lat", and "lon". I've tried to apply the examples from the Plotly website and other resources with my data but I'm not getting any luck. They only seem to have an example with the fipscode, and I'm not sure how to use "lat" and "lon" information on my code.
This is the example code I found from the plotly website. Is there a way to plot the map with only the "lat" and "lon" information without having to use counties JSON and the fips code?
...ANSWER
Answered 2021-May-23 at 00:15Given the example you provided, I assume you want to color the counties by either value1 or value2. In this case, you believe you need the geojson as these draw the county's boundaries so that the color gradient can be applied. Depending on what you are looking for:
- If you are looking for the fill counties style (strictly choropleth map), you can potentially convert the fips code from the state_name and county_name using this dataset (Counties and FIPS Dataset); you can merge by the county and state to obtain the FIPS codes.
- If you are not looking for a choropleth map, you might not need the geojson object; a bubble map might be more suitable (Plotly bubble Maps) as you only need the lat and long to plot this.
QUESTION
I am trying to import a json as a dataframe, but it imports as a list. I have tried other threads' solutions, but they are not working in my case.
What I want to import is a dataframe with six columns: unix, low, high, open, close and volume. The json is also structured in this way. The code is below:
...ANSWER
Answered 2021-Apr-23 at 14:47With tidyverse and jsonlite, try:
QUESTION
I have three .json files,
...ANSWER
Answered 2021-Apr-21 at 21:19Try
QUESTION
When I try to json decode I get the error Expected a value of type 'List', but got one of type '_JsonMap'
My code:
...ANSWER
Answered 2021-Apr-19 at 14:56Try this
QUESTION
I'm working with the Discogs API, trying to extract community information (haves and wants, lowest price etc) for my collection.
Unfortunately, it has a rate limit of 25 per minute and I can't work out a way to work that limit into my current code (see below). I could use sys.sleep(), but I'm not sure where that would go within the code.
...ANSWER
Answered 2021-Apr-08 at 13:35It should work fine to just insert the sleep command directly before you return your value. This will give you a pattern of query the url, extract information, sleep, return value, repeat. Aka, edit the above code chunk like so:
QUESTION
I'm just trying to import a html table into R. I have tried other people's mistakes and looked extensively at the solutions given, though my problems still arise. I understand this is easy, however for some reason it just isn't working for me. I get the following errors:
Error: failed to load external entity "http://www.formula1.com/en/results.html/2020/races/1045/austria/race-result.html" (for the first function)
Error in (function (classes, fdef, mtable) :
unable to find an inherited method for function ‘readHTMLTable’ for signature ‘"NULL"’ (for the second)
As I have mentioned, I have looked at other people's problems and tried solving mine using their solutions, though the same problems still arise. Perhaps this could be due to my settings(I'm not sure), however can anyone help me please?
...ANSWER
Answered 2021-Mar-16 at 09:18In rvest you can use html_table to get the table from the page :
QUESTION
I need to read js in R to download iso_3166_2 data. How I can use rjson to read?
ANSWER
Answered 2021-Mar-07 at 05:33Packages like rjson and jsonlite expect to read properly formatted JSON data, not arbitrary javascript files. You can verify something is in JSON format with a JSON validator. In this you are lucky that it's pretty close to a proper JSON file, you just need to clean a few things up. you just need to clean up the first and last lines
QUESTION
I have a lot of json arrays that don't follow the "attribute":"value" format I'm used to. I want to read them in one by one and parse them into tables. Then I want to combine the tables. I got stuck with the parsing bit.
All arrays are tagged posts from a forum and have this structure:
...ANSWER
Answered 2020-Dec-19 at 08:23Try reading the data using jsonlite::fromJSON and unnest the values.
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