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https://github.com/ksokolovic/r-programming
Solutions to the assignments of the "R Programming" Coursera course.
https://github.com/ksokolovic/r-programming
coursera r-programming
Last synced: about 8 hours ago
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Solutions to the assignments of the "R Programming" Coursera course.
- Host: GitHub
- URL: https://github.com/ksokolovic/r-programming
- Owner: ksokolovic
- Created: 2015-06-06T22:39:05.000Z (over 9 years ago)
- Default Branch: master
- Last Pushed: 2015-06-06T22:46:42.000Z (over 9 years ago)
- Last Synced: 2023-03-02T07:33:12.234Z (almost 2 years ago)
- Topics: coursera, r-programming
- Language: R
- Size: 3.48 MB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# R Programming
* * *
This repository contains the solutions to assignments given in the Coursera **R Programming** course. This course is
just a part of the **Data Science Specialization**.
# Running the assignments
* * *
Before trying to test the code, you first need to install [R](http://www.r-project.org/) on your system.
To clone the repository containing the source, type in the following:
```sh
$ git clone https://[email protected]/sokolovic/r-programming.git
```
After cloning the repository, you can load the functions into your current R workspace using ```source(path/to/source.R)```
and invoke them.
## Assignment 01
To run the functions from *Assignment 01* I recommend you first set the working directory to the root of the cloned
repository.
```sh
> setwd("r-programming") # We first set the working directory to the root of the cloned repository
```
```sh
> source("assignment01/pollutantmean.R") # Load the function so it can be used
>
> pollutantmean("assignment01/specdata", "sulfate", 1:10)
[1] 4.064
>
> pollutantmean("specdata", "nitrate", 70:72)
[1] 1.706
>
> pollutantmean("specdata", "nitrate", 23)
[1] 1.281
```
```sh
> source("assignment01/complete.R") # Load the function so it can be used
>
> complete("specdata", 1)
id nobs
1 1 117
>
> complete("specdata", c(2, 4, 8, 10, 12))
id nobs
1 2 1041
2 4 474
3 8 192
4 10 148
5 12 96
>
> complete("specdata", 30:25)
id nobs
1 30 932
2 29 711
3 28 475
4 27 338
5 26 586
6 25 463
>
> complete("specdata", 3)
id nobs
1 3 243
```
```sh
> source("assignment01/corr.R") # Load the function so it can be used
> source("assignment01/complete.R") # Load the complete() function since it's used in the corr()
>
> cr <- corr("specdata", 150)
> head(cr)
[1] -0.01896 -0.14051 -0.04390 -0.06816 -0.12351 -0.07589
> summary(cr)
Min. 1st Qu. Median Mean 3rd Qu. Max.
-0.2110 -0.0500 0.0946 0.1250 0.2680 0.7630
>
> cr <- corr("specdata", 5000)
> summary(cr)
Min. 1st Qu. Median Mean 3rd Qu. Max.
> length(cr)
[1] 0
>
> cr <- corr("specdata")
> summary(cr)
Min. 1st Qu. Median Mean 3rd Qu. Max.
-1.0000 -0.0528 0.1070 0.1370 0.2780 1.0000
> length(cr)
[1] 323
```
## Assignment 03
To run the functions from *Assignment 03* I recommend you first set the working directory to the root of the
cloned repository.
```sh
> setwd("r-programming") # We first set the working directory to the root of the cloned repository
```
```sh
> source("assignment03/best.R") # Load the function so it can be used
>
> best("TX", "heart attack")
[1] "CYPRESS FAIRBANKS MEDICAL CENTER"
>
> best("TX", "heart failure")
[1] "FORT DUNCAN MEDICAL CENTER"
>
> best("MD", "pneumonia")
[1] "GREATER BALTIMORE MEDICAL CENTER"
>
> best("MD", "heart attack")
[1] "JOHNS HOPKINS HOSPITAL, THE"
>
> best("BB", "heart attack")
Error in best("BB", "heart attack") : invalid state
>
> best("NY", "hert attack")
Error in best("NY", "hert attack") : invalid outcome
```
```sh
> source("assignment03/rankhospital.R") # Load the function so it can be used
> source("assignment03/best.R") # Load the best() function since it's used in the rankhospital()
>
> rankhospital("TX", "heart failure", 4)
[1] "DETAR HOSPITAL NAVARRO"
>
> rankhospital("MD", "heart attack", "worst")
[1] "HARFORD MEMORIAL HOSPITAL"
>
> rankhospital("MN", "heart attack", 5000)
[1] NA
```
```sh
> source("assignment03/rankall.R") # Load the function so it can be used
> head(rankall("heart attack", 20), 10)
hospital state
1 AK
2 D W MCMILLAN MEMORIAL HOSPITAL AL
3 ARKANSAS METHODIST MEDICAL CENTER AR
4 JOHN C LINCOLN DEER VALLEY HOSPITAL AZ
5 SHERMAN OAKS HOSPITAL CA
6 SKY RIDGE MEDICAL CENTER CO
7 MIDSTATE MEDICAL CENTER CT
8 DC
9 DE
10 SOUTH FLORIDA BAPTIST HOSPITAL FL
>
> tail(rankall("pneumonia", "worst"), 3)
hospital state
52 MAYO CLINIC HEALTH SYSTEM - NORTHLAND, INC WI
53 PLATEAU MEDICAL CENTER WV
54 NORTH BIG HORN HOSPITAL DISTRICT WY
>
> tail(rankall("heart failure"), 10)
hospital state
45 WELLMONT HAWKINS COUNTY MEMORIAL HOSPITAL TN
46 FORT DUNCAN MEDICAL CENTER TX
47 VA SALT LAKE CITY HEALTHCARE - GEORGE E. WAHLEN VA MEDICAL CENTER UT
48 SENTARA POTOMAC HOSPITAL VA
49 GOV JUAN F LUIS HOSPITAL & MEDICAL CTR VI
50 SPRINGFIELD HOSPITAL VT
51 HARBORVIEW MEDICAL CENTER WA
52 AURORA ST LUKES MEDICAL CENTER WI
53 FAIRMONT GENERAL HOSPITAL WV
54 CHEYENNE VA MEDICAL CENTER WY
```
# Copyright
* * *
> *Copyright (c) 2015 Kemal Sokolović *
>
> Permission is hereby granted, free of charge, to any person obtaining a copy of
> this software and associated documentation files (the "Software"), to deal in the
> Software without restriction, including without limitation the rights to use,
> copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
> Software, and to permit persons to whom the Software is furnished to do so,
> subject to the following conditions:
>
> The above copyright notice and this permission notice shall be included in all
> copies or substantial portions of the Software.
>
> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
> IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
> DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
> DEALINGS IN THE SOFTWARE.