Mon premier blog

Data Manipulation with R (Use R) Phil Spector
Publisher: Springer

GetImageData(0, 0, c.width, c.height); var index = ((y * (pixels.width * 4)) + (x * 4)); return { r: pixels.data[index], g: pixels.data[index + 1], b: pixels.data[index + 2], a: pixels.data[index + 3] }; } /* getpixelamount(r, g, b) returns the amount of pixels It would be cool to use HTML5 Audio to also pronounce the letter when they correctly paint it. Series of books from Springer (http://www.springer.com/series/6991). The old classic Modern Applied Statistics in S-Plus is very good as well. For those who are learning R and who may be well-versed in SQL, the sqldf package provides a mechanism to manipulate R data frames using SQL. Many of our RAs also seem to like the Use R! I personally found the best way to learn it was to take Ecological Models and Data in R by Ben Bolker is a great book for learning applied ways to manipulate data, formulate analyses, and generate graphics in R. Either via a painting API or by directly manipulating the pixel array (which by the way is a typed array and thus performs admirably). Even for experienced R programmers, sqldf can be a useful tool for data Road District Length ## 1 Interstate 65 Greenfield 262 ## 2 Interstate 70 Vincennes 156 ## 3 US-36 Crawfordsville 139 ## 4 US-40 Greenfield 150 ## 5 US-52 Crawfordsville 172. Performing joins is one of the most common operations in SQL. The reason they're manipulating our mobile internet traffic is to conserve limited wireless bandwidth, to provide a better customer experience, and to, yes, protect their own their own services and revenue streams. AT&T, Verizon Wireless use them to throttle back your speeds when they deem you've 'abused' your unlimited plan, while T-Mobile does the same when you've exceeded your data cap.