pre-print - Hadley Wickham's

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Saturday, July 23, 2011 1. What is data analysis? 2. Why use a programming language? 3. Why use R? 4. Why use DSLs within R? 5. Case study: Mexico mortality
Data analysis Data analysis is the process is the process by which by data which becomes data becomes understanding, understanding, knowledge knowledge Saturday, July 23, 2011 and insight and insight
Page 1: June 2011 Saturday, July 23, 2011 E
Page 5 and 6: Saturday, July 23, 2011
Page 7 and 8: Access Saturday, July 23, 2011 Unde
Page 9 and 10: Understand Visualise Access Transfo
Page 11 and 12: Understand Visualise Questions Tran
Page 13 and 14: Reproducibility http://www.flickr.c
Page 15 and 16: # Load data and create smaller subs
Page 17 and 18: Saturday, July 23, 2011 Learning cu
Page 19 and 20: SEXP applyClosure(SEXP call, SEXP o
Page 21 and 22: http://www.flickr.com/photos/meantu
Page 23 and 24: http://www.flickr.com/photos/wwwork
Page 25 and 26: http://www.flickr.com/photos/billy6
Page 27 and 28: Saturday, July 23, 2011 Domain spec
Page 29 and 30: Saturday, July 23, 2011 “If any n
Page 31 and 32: y ~ x y ~ x1 + x2 y ~ x1 * x2 y ~ x
Page 33 and 34: subset mutate arrange summarise * b
Page 35 and 36: Saturday, July 23, 2011 Motivation
Page 37 and 38: disease Assault (homicide) by other
Page 39 and 40: library(ggplot2) library(plyr) load
Page 41 and 42: Saturday, July 23, 2011 Time of dea
Page 43 and 44: deaths$hod[deaths$hod == 99]
Page 45 and 46: # Compute deaths by hour by cause,
Page 47 and 48: Saturday, July 23, 2011 dist 0.005
Page 49 and 50: devi$resid
Page 51 and 52: Saturday, July 23, 2011 Challenge
Page 53 and 54:
First need location: Saturday, July
Page 55 and 56:
Only locations with >100 deaths Sat
Page 57 and 58:
Saturday, July 23, 2011 Hours of pa
Page 59 and 60:
Saturday, July 23, 2011
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35 30 25 20 15 ● ● Saturday, Ju
Page 63 and 64:
Saturday, July 23, 2011 ...
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temp_max freq 250 300 350 ● ●
Page 67 and 68:
0.008 0.006 0.004 0.008 0.006 0.004
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Saturday, July 23, 2011 Conclusions
Page 71 and 72:
Saturday, July 23, 2011
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