https://github.com/jverzani/iterater

Some syntatic sugar for iterating R objects
https://github.com/jverzani/iterater

Last synced: 18 days ago
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Some syntatic sugar for iterating R objects

• Host: GitHub
• URL: https://github.com/jverzani/iterater
• Owner: jverzani
• Created: 2012-02-25T22:14:52.000Z (almost 13 years ago)
• Default Branch: master
• Last Pushed: 2012-02-25T22:19:14.000Z (almost 13 years ago)
• Last Synced: 2024-05-09T13:07:35.732Z (8 months ago)
• Language: R
• Homepage:
• Size: 105 KB
• Stars: 1
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
Toy iterator package

---------------------------

Slightly enamored with jQuery's selector notation, e.g., 

`$('').each(...)`  to iterate over objects, this implements a similar but reverse

notation for R objects. So things like `.(mtcars)$each(median)` will

apply the median to each object. Akin to `sapply(mtcars, median)` of

course, but the point is more objects fit into the same form (no apply

versus sapply).


This package needs some serious thought as to exactly what the

interface should be, as it is now it is just an experiment

Example

-------

The following examples illlustrate a bit. 

    

    > install_github("IterateR", "jverzani")

    > require(IterateR)

    > require(MASS)

    > require(MASS)

    ## simple example

    > .(mtcars)$each(median)

        mpg     cyl    disp      hp    drat      wt    qsec      vs      am    gear 

     19.200   6.000 196.300 123.000   3.695   3.325  17.710   0.000   0.000   4.000 

       carb 

      2.000 

    ## chaining of commands

    > .(Cars93)$filter(is.numeric)$each(median)

             Min.Price              Price          Max.Price           MPG.city 

                  14.7               17.7               19.6               21.0 

           MPG.highway         EngineSize         Horsepower                RPM 

                  28.0                2.4              140.0             5200.0 

          Rev.per.mile Fuel.tank.capacity         Passengers             Length 

                2340.0               16.4                5.0              183.0 

             Wheelbase              Width        Turn.circle     Rear.seat.room 

                 103.0               69.0               39.0               27.5 

          Luggage.room             Weight 

                  14.0             3040.0