Rcrawler | An R web crawler and scraper | Crawler library

by salimk R Version: Current License: Non-SPDX

X-Ray Key Features Code Snippets Community Discussions(5)Vulnerabilities Install Support

kandi X-RAY | Rcrawler Summary

Rcrawler is a R library typically used in Automation, Crawler, Selenium applications. Rcrawler has no bugs, it has no vulnerabilities and it has low support. However Rcrawler has a Non-SPDX License. You can download it from GitHub.

An R web crawler and scraper

Support

Quality

Security

License

Reuse

Support

Rcrawler has a low active ecosystem.

It has 318 star(s) with 96 fork(s). There are 39 watchers for this library.

It had no major release in the last 6 months.

There are 32 open issues and 41 have been closed. On average issues are closed in 165 days. There are 6 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of Rcrawler is current.

Quality

Rcrawler has 0 bugs and 0 code smells.

Security

Rcrawler has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

Rcrawler code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

Rcrawler has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

Rcrawler releases are not available. You will need to build from source code and install.

Installation instructions, examples and code snippets are available.

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Rcrawler Key Features

No Key Features are available at this moment for Rcrawler.

Rcrawler Examples and Code Snippets

No Code Snippets are available at this moment for Rcrawler.

Community Discussions

Trending Discussions on Rcrawler

How can I crawl/scrape (using R) the non-table EPA CompTox Dashboard?

Web-scraping multiple dissimilar pages

Web crawler and save with txt format using R

Website crawling: responses are different for postman and browser

How can I extract multiple items from 1 html using RCrawler's ExtractXpathPat?

QUESTION

How can I crawl/scrape (using R) the non-table EPA CompTox Dashboard?

Asked 2021-Dec-08 at 08:20

The EPA CompTox Chemical Dashboard received an update, and my old code is not longer able to scrape the Boiling Point for chemicals. Is anyone able to help me scrape the Experimental Average Boiling Point? I need to be able to write an R code that can loop through several chemicals.

Example webpages:
Acetone: https://comptox.epa.gov/dashboard/chemical/properties/DTXSID8021482
Methane: https://comptox.epa.gov/dashboard/chemical/properties/DTXSID8025545

I have tried read_html() and xmlParse() without success. The Experimental Average Boiling Point (ExpAvBP) value does not show up in the XML.

I have tried using ContentScraper() from the RCrawler, but it only returns NA whatever I try. Furthermore, this would only work for the first webpage listed, as the cell id changes with each chemical.

...

ANSWER

Answered 2021-Dec-07 at 16:41

As the data is in no table format we have to extract text and extract the boiling temperature by matching pattern BoilingPoint.

Source https://stackoverflow.com/questions/70262421

QUESTION

Web-scraping multiple dissimilar pages

Asked 2021-Nov-30 at 17:09

Given a set of URLs that do not have any common underlying structure, in terms of their HTML code, and a keyword, which R packages are best recommended to use to explore all the links within those pages - Rvest or Rcrawler- in terms of speed and efficiency? Any ideas for Python?

...

ANSWER

Answered 2021-Oct-25 at 05:33

I think the solution you are expecting is something like this: https://stackoverflow.com/a/69384812/12050737

But, by adding a few codes as follows, we can solve the problem:

Source https://stackoverflow.com/questions/69702693

QUESTION

Web crawler and save with txt format using R

Asked 2021-Jan-10 at 03:32

I would like to cralwer the poems and save with txt from this link, here is some hints:

create folders with name of poet,
save the poems with txt format by clicking poems in the red circle one by one,
file name should be poem titles with extension of txt.

I'm new on web crawler with R, someone could help? I'll appreciate your suggestions or helps.

Code:

...

ANSWER

Answered 2021-Jan-10 at 03:32

This requires quite a lot of knowledge pieces, that I don't think a beginner can connect together. So here is the code, I explained in the comments:

Source https://stackoverflow.com/questions/65628623

QUESTION

Website crawling: responses are different for postman and browser

Asked 2020-Aug-07 at 15:43

I want to crawl the site https://www.ups.com/de/de/shipping/surcharges/fuel-surcharges.page. There, the company is giving all fuel surcharges they are adding to invoice amounts. I need the information to correctly calculate some costs. Unfortunately, UPS is currently not willing to send me the data in a readable format on a regular basis. Thus, I thought about crawling the website and getting the information by myself.

Unfortunately, when using postman or my crawling tool rcrawler, the GET request to the site hides the data tables. How could I trick the site to return all the data as it does when using chrome browser?

For example, the standard tier costs table looks like this in postman (containing just the headlines of the columns but no values):

...

ANSWER

Answered 2020-Aug-07 at 15:43

You are just naively downloading the website source.

If you open developer tools in your browser (usually F12) and open the Network tab, and reload the page, you will see all the requests that are made.

You will notice several javascript files, and somewhere in that list you will also see a file named de.json. If you look at the response form that request, you will see all the rates displayed as json.

One of the javascript files parses this and displays this data in a table, in your browser. Postman does not have a javascript interpreter; actually it does, but it is not used same as a web browser. So requesting the entire page will not show you this data.

However, if you GET https://www.ups.com/assets/resources/fuel-surcharge/de.json you will get the data you are after.

Source https://stackoverflow.com/questions/63267462

QUESTION

How can I extract multiple items from 1 html using RCrawler's ExtractXpathPat?

Asked 2020-Mar-04 at 04:56

I'm trying to get both the label and data of items of a museum collection using Rcrawler. I think I made a mistake using the ExtractXpathPat variable, but I can't figure out how to fix it.

I expect an output like this:

...

ANSWER

Answered 2020-Mar-04 at 04:56

I don't use RCrawler to scrape but I think your XPaths need to be fixed. I did it for you :

Source https://stackoverflow.com/questions/60496753

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install Rcrawler

Install the release version from CRAN (Stable version):.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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