3273 search results for "Map"

Scraping information of CRAN packages

July 28, 2014
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(This article is adapted to the latest version of rvest package.) In my previous post, I demonstrated how we can scrape online data using existing packages. In this post, I will take it a bit further: I will scrape more information of CRAN packages since each of them also has a web page like this. More specifically,...

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Analyzing package dependencies and download logs from Rstudio, and a start towards building an R recommendation engine

July 27, 2014
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Analyzing package dependencies and download logs from Rstudio, and a start towards building an R recommendation engine

In this post, I will focus on the analysis of available R packages and the behavior of its users. In essence, this involves looking at the data in two different ways (1) relationships among available R packages in CRAN and (2) tracking the behavior of R users through download logs on CRAN mirrors. I will

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Guns are Cool – States

July 26, 2014
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Guns are Cool – States

Last week I looked at time effects of the shootingtracker database. This week I will look at the states. Some (smaller) states never made it on the database. Other states, far too frequently. The worst of these California. After correcting for populati...

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User Request – Shepards Classification of Sediments

July 25, 2014
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User Request – Shepards Classification of Sediments

I received a request overnight on how to render the Shepard’s classification diagram, which is an alternative to the USDA’s textural soil classification. This is quite simple to produce (albeit a little tedious), however, before I walk through the script, immediately below, please see the final result (which you can compare to an original). The The post

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Combining pages of JSON data with jsonlite and plyr

July 24, 2014
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Combining pages of JSON data with jsonlite and plyr

The jsonlite package is a JSON parser/generator for R which is optimized for pipelines and web APIs. It is used by the OpenCPU system and many other packages to get data in and out of R using the JSON format. A bidirectional mapping One of the main strenghts of jsonlite is that it...

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What are the most popular keywords of CRAN packages?

July 24, 2014
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(This article is adapted to the latest version of rvest package.) A large proportion of R's power should be attributed to the enormous amount of extension packages. Many packages are published to CRAN. These packages cover a wide range of fields. In this post, I'll show you how to use R to scrap the titles of all CRAN packages from...

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What are the most popular keywords of CRAN packages?

July 24, 2014
By

(This article is adapted to the latest version of rvest package.) A large proportion of R's power should be attributed to the enormous amount of extension packages. Many packages are published to CRAN. These packages cover a wide range of fields. In this post, I'll show you how to use R to scrap the titles of all CRAN packages from...

Read more »

再不相信预编译的R

July 23, 2014
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去年ubuntu下apt-get了R-3.0.2, 用了没多久就发现了system命令有问题,通常情况下调用系统命令是正常的,但是我调用bowtie的时候,就会报错: Warning: Could not open read file "/tmp/8156.inpipe1" for reading; skipping... Read More: 2553 Words Totally

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Mideast Graph 3: Slate Middle East Friendship

July 23, 2014
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Mideast Graph 3: Slate Middle East Friendship

Slate recently published a great info-graphic about Middle-East Relationships. It shows the relationships (Friend, Enemy, or Complicated) of 13 countries / organizations and the relationships between each pair. One draw back of the chart is that it doe...

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Flood fill a region of an active device in R

July 23, 2014
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Flood fill a region of an active device in R

The following is a function to "flood fill" a region on the active plotting device. Once called, the user will be asked to click on the desired target region. The flood fill algorithm then searches neighbors in 4 directions of the target cell (down, le...

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