摘要：//makefile1 myapp: main.o 2.o 3.o gcc -o myapp main.o 2.o 3.o main.o: main.c a.h gcc -c main.c 2.o: 2.c a.h b.h gcc -c 2.c 3.o: 3.c b.h c.h gcc -c 3.c // make -... 阅读全文

摘要：#include <string>string: :size_type //An unsigned integer (data) type string: :npos //The maximum value of the (data) type string:: size_type , //a number such as 4294967295 on many machinesstring strVar;strVar.length()strVar.size()strVar.find(strExp)strVar.find(strExp, pos)strVar.substr(expr1 阅读全文

摘要：cin.ignore(intExp, chExp);Here intExp is an integer expression yielding an integer value, and chExp is a char expression yielding achar value. In fact, the value of the expression intExp specifies the maximum number of characters to be ignored in a line.cin.ignore(100, ' \n');cin.ignore(75, 阅读全文

摘要：Ch12 Resampling statistics and bootstrappingPermutation testsPermutation tests, also called randomization or re-randomization tests.Ten subjects have been randomlyassigned to one of two treatment conditions(A or B) and an outcome variable (score) has been recorded.Is there enough evidence to conclud 阅读全文

摘要：Creating publication-quality outputThe Sweave package allows you to embed R code and output in LaTeX documents, in order to produce high-end typeset reports in PDF, PostScript, and DVI formats. Sweave is an elegant, precise, and highly flexible system,but it requires the author to be conversant with 阅读全文

摘要：Matrix Algebra in RA and B are matrices, x and b are vectors, and k is a scalar.The matlab package contains wrapper functions and variables used to replicate MATLAB function calls as closely as possible.http://mathesaurus.sourceforge.net/octave-r.htmlTheMatrix package contains functions that extend 阅读全文

摘要：Working with large datasetsThere are three issues to consider when working with large datasets:(a) efficient programming to speed execution, (b) storing data externally to limit memory issues,(c) using specialized statistical routines designed to efficiently analyze massive amounts of data.Efficient 阅读全文

摘要：Updating an R installationupdate.packages() function can be used to download and install the most recent version of a contributed package.http://cran.r-project.org/binThe installed.packages() function is used to save a list of packages to a location outside of the R director y tree, and then the lis 阅读全文