While factors look and often behave like character vectors, they are actually integers under the hood, and you need to be careful when treating them like strings. The guys from rstudio now provide cran download logs see also this blog post. Another duo andrea frazzini and lasse heje pedersen have expanded our world with their betting against beta bab and quality minus junk qmj factors. Multiple factor analysis when variables are structured in groups, etc. Factominer, an r package dedicated to multivariate exploratory data analysis. Acswr, a companion package for the book a course in statistics with r. The main principal component methods are available, those with the largest potential in terms of applications. By felixs this article was first published on nicebread. If you have questions about r like how to download and install the software, or what the license terms are, please read our answers to frequently asked questions before you send an email. Select a cran location a mirror site and click the corresponding link.
This has caused countless novice r users a headache trying to figure out why their character columns are not working properly, but not you. For more information about different contrasts coding systems and how to implement them in r, please refer to r library. Coding for categorical variables in regression models r. The function factor is used to encode a vector as a factor the terms category and enumerated type are also used for factors. Exploring factors with rcharts and factoranalytics r. If argument ordered is true, the factor levels are assumed to be ordered.
Once created, factors can only contain a predefined set values, known as levels. You may also want to read the r faq and r for windows faq. Fama and french changed the financial world with their factors in 1993. Lets first read in the data set and create the factor. After running the rtools installer, follow the instructions in rtools. Both numeric and character variables can be made into factors, but a factor s levels will always be. Click on the download r for mac os x link at the top of the page. A collection of functions helpful in learning the basic tenets of bayesian statistical inference. Discover and troubleshoot application dependencies to determine if its an application or network problem with. By default, the function searches if rtools is installed, if not, it checks if it knows which version to isntall for the current r version, and if not it asks the user to choose which rtools version to install. Rstudio is a set of integrated tools designed to help you be more productive with r. Lasso and elasticnet regularized generalized linear models.
Provides model fitting for several bayesian factor models including gaussian, ordinal probit, mixed and semiparametric gaussian copula factor models under a range of priors. This package estimates factor analysis models using a genetic algorithm, which permits a general mechanism for restricted optimization with arbitrary restrictions that are chosen at run time with the help of a gui. The comprehensive r archive network your browser seems not to support frames, here is the contents page of cran. Factominer is an r package dedicated to multivariate exploratory data analysis. It compiles and runs on a wide variety of unix platforms, windows and macos. We provide extremely efficient procedures for fitting the entire lasso or elasticnet regularization path for linear regression gaussian, multitask gaussian, logistic and multinomial regression models grouped or not, poisson regression and the cox model. The size probably will be very big around 200 gb, but for corporate. It also contains functions for regression models, hierarchical models, bayesian tests. Helpers for reordering factor levels including moving specified levels to front. A suite of functions for computing various bayes factors for simple designs, including contingency tables, one and twosample designs, oneway designs, general anova designs, and linear regression. Factors in r are stored as a vector of integer values with a corresponding set of character values to use when the factor is displayed. It includes a console, syntaxhighlighting editor that supports direct code execution, as well as tools for plotting, history, debugging and workspace management. Package sentimentanalysis released on cran rbloggers.
For compatibility with s there is also a function ordered is. Rstudio is an integrated development environment ide for r. See how the company column has been converted to a factor. It contains functions for summarizing basic one and two parameter posterior distributions and predictive distributions. Exploratory data analysis methods to summarize, visualize and describe datasets. Item response theory is done using factor analysis of tetrachoric and polychoric. Package developers might want to contact uwe ligges directly in case of questions suggestions related to windows binaries.
The only required argument to factor is a vector of values which will be returned as a vector of factor values. Click the download r link in the middle of the page under getting started. To download r, please choose your preferred cran mirror. The r project for statistical computing getting started. It refers to any measures by which subjective information is extracted. Download rstudio rstudio is a set of integrated tools designed to help you be more productive with r. A grammar of data manipulation a fast, consistent tool for working with data frame like objects, both in. Importantly, inequality restrictions can be imposed on functions of multiple parameters, which provides a new avenues for testing and generating theories with factor analysis. It contains mcmc algorithms for summarizing posterior distributions defined by the user. Sometimes you need to explicitly convert factors to either text or numbers.
If you have questions about r like how to download and install the software, or what the license terms are, please read our answers to frequently asked questionsbefore you send an email. Allows the user to choose, downloads and install the latest version of rtools for windows. Tools for working with categorical variables factors. Tools for working with categorical variables factors forcats. Factor analysis of mixed data, mfa multiple factor analysis and hmfa hierarchical multiple factor analysis functions from different r. Here are the complete, selfcontained r scripts to analyze these log data. For the examples on this page we will be using the hsb2 data set. What your code chunk does is to turn the factor s level index into a character matrix, so what. So, i am wondering how can i download the entire zip file of all cran packages so i can put them in a web server directory in my local offline machine and act like a real repository.
First, convert your directions vector into a factor called directions. The leftmost interval corresponds to level one, the next leftmost to level two and so on. Automated and repeated downloads from rstudio cran download logs. R is gnu s, a freely available language and environment for statistical computing and. If the library is omitted it defaults to the first directory in. R is a free software environment for statistical computing and graphics. By default, r always sorts levels in alphabetical order. A general purpose toolbox for personality, psychometric theory and experimental psychology. R s default behavior when creating data frames is to convert all characters into factors. It includes a console, syntaxhighlighting editor that supports direct code execution, and a variety of robust tools for plotting, viewing history, debugging and managing your workspace. Sentiment analysis is a research branch located at the heart of natural language processing nlp, computational linguistics and text mining. Functions are primarily for multivariate analysis and scale construction using factor analysis, principal component analysis, cluster analysis and reliability analysis, although others provide basic descriptive statistics. This is a readonly mirror of the cran r package repository. Microsoft r open is the enhanced distribution of r from microsoft corporation.
108 1390 399 1092 1355 1309 540 1135 1301 1413 461 108 109 944 125 196 654 1362 1191 1621 1237 139 1418 1059 1132 427 1297 1142 851 348 875 749 1466 1473 1117 660 687 585 560 354 1379 166 89 177 317 698 523