search for: microeconom

Dear all, I have uploaded a new package called micEcon (version 0.1-3) to CRAN (an early version of this package has been already presented at useR! 2004). It contains tools for microeconomic analysis and microeconomic modeling. These are for instance: - tools for demand analysis with the 'Almost Ideal Demand System' (AIDS): e.g. econometric estimation, calculation of price and income/expenditure elasticities, checking for theoretical consistency - tools for production/fir...

Dear all, I have uploaded a new package called micEcon (version 0.1-3) to CRAN (an early version of this package has been already presented at useR! 2004). It contains tools for microeconomic analysis and microeconomic modeling. These are for instance: - tools for demand analysis with the 'Almost Ideal Demand System' (AIDS): e.g. econometric estimation, calculation of price and income/expenditure elasticities, checking for theoretical consistency - tools for production/fir...

Dear R Users: The functions of our "micEcon" package [1,2] can be subdivided into three categories: - microeconomic demand and firm models - sample selection models (mainly selection()) - routines for (likelihood) maximisation (e.g. maxLik(), maxNR(), maxBHHH()) (mainly used for ML estimation of sample selection models) Although sample selection models are often used in microeconomic analyses, they are al...

...n this list, I would like to release it to the public. I hope that "useRs will become developeRs" and help to improve and extend this function(s). I think it might be not very reasonable to start a new package just for this single small function. And my package "micEcon" for microeconomic analysis that I hope to release soon seems also not to be the right place, since heckman estimations are used in many other areas besides microeconomic analysis. Can anybody suggest me a package that is appropriate to include the Heckmann function and whose maintainer is willing to do that, t...

Dear All, we (Ott Toomet and I) would like to add functions for maximum likelihood (ML) estimations of generalized tobit models of type 2 and type 5 (*see below) in my R package for microeconomic analysis "micEcon". So far we have called these functions "tobit2( )" and "tobit5( )". Are these classifications well known? How are these functions called in other software packages? Should we keep these names or does anybody have better suggestions? (* T. Ame...

Hi, I wanted to download a file and did the following: --------------------------------------------------------- > fileLink <- 'ftp://ftp.ncbi.nih.gov/pub/geo/DATA/supplementary/series/GSE1000/GSE1000_RAW.tar' > download.file(fileLink,'/geoDat') trying URL 'ftp://ftp.ncbi.nih.gov/pub/geo/DATA/supplementary/series/GSE1000/GSE1000_RAW.tar' ftp data connection made,

...at a time to a colleague not familiar with R. Those who _are_ familar with R might prefer the version at http://www.j-paine.org/rtaxben/R/reveal/rtaxben_anim.html . Exactly the same material, but, as explained in my introduction, quicker to read. Read the blog post first. Our model, R-Taxben, is a microeconomic model, which simulates at the level of individual people rather than bulk variables such as unemployment and inflation. It works, roughly speaking, by reading survey data about actual households, then applying taxes and benefits to calculate net income and expenditure from gross. It has four main...

...mum likelihood estimations (see http://www.maxLik.org). b) Package "sampleSelection" provides tools for estimating Heckman-type sample selection/generalized tobit models (see http://www.sampleSelection.org). c) Package "micEcon" contains the remainder, i.e. mainly tools for microeconomic demand and firm models, e.g. estimating the "Almost Ideal Demand System" or the "Symmetric Normalized Quadratic" / "Symmetric Generalized McFadden" profit function (see http://www.micEcon.org). All these packages are available for download from CRAN and from their...

...mum likelihood estimations (see http://www.maxLik.org). b) Package "sampleSelection" provides tools for estimating Heckman-type sample selection/generalized tobit models (see http://www.sampleSelection.org). c) Package "micEcon" contains the remainder, i.e. mainly tools for microeconomic demand and firm models, e.g. estimating the "Almost Ideal Demand System" or the "Symmetric Normalized Quadratic" / "Symmetric Generalized McFadden" profit function (see http://www.micEcon.org). All these packages are available for download from CRAN and from their...

Dear R-helpers, if I want to read a .dta-file generated by stata 9.0 with read.dta (foreign), I get the message "not a stata version 5-8 .dta-file". I'm using R-2.6.2 and the latest version of the foreign package. Has someone any hint? With many thanks, Albrecht

Hi, I have some scripts creating GNUplot graphs that I would like to convert to R. It would be a great help if there would be a reasonable converter that takes over plot commands and initial settings and put these into R commands (I'm an R beginner and thus this kind of Kickstart would be helpful). Remark: Asking Google for "gnuplot to R conversion" or similar things does not

Hi! I'm doing: etni <- subset(etni, NAMECOM!="Maniquisito") where etni is a data.frame, NAMECOM a factor and "Maniquisito" labels a row that I want to delete. The problem is that while the row is deleted, the factor level is still there (I can see "Maniquisito" if I do levels(etni$NAMECOM) ). I know I can get the appropriate levels by:

Dear R Users, I'm trying to find function that allow me to solve one nonlinear equation. Functions that I found are good for optimization problems. Any suggestions are welcome, rob

Dear current (and future) users of the "frontier" package, We are approaching the first stable version (1.0) of the frontier package, which provides tools for microeconomic Stochastic Frontier Analysis (SFA). I have uploaded a kind of beta release (version 0.99) of this package to CRAN. The most important differences to version 0.9 affect the user interface. I have modified the package so that it is (hopefully) simpler to use and the functions are more similar t...

Dear current (and future) users of the "frontier" package, We are approaching the first stable version (1.0) of the frontier package, which provides tools for microeconomic Stochastic Frontier Analysis (SFA). I have uploaded a kind of beta release (version 0.99) of this package to CRAN. The most important differences to version 0.9 affect the user interface. I have modified the package so that it is (hopefully) simpler to use and the functions are more similar t...

Like many software assemblies, R is updated frequently. Also, it creates its own release-numbered directory when it is installed. Packages get dumped into the subdirectory "library". I have a personal habit of storing documents related to R packages in the "doc" subdirectory. Here are my questions. (1) How do people manage an upgrade, from 2.6.1, say, to 2.6.2? 2.6.2 will

# PROBLEM WITH ABLINE # I have a question about a seemingly imprecise abline figure which I have come accross now a few times. # After reading variables a and b... a<-c(3729,1796,1956,5177,3201,3138,4265,3042,3745,2060,5713,6811,4184,1221,4700,3171,8913,5565,5500,2428,4841,10428,11197,5946,2783,4842)

...familiar with R. Those who _are_ > familar with R might prefer the version at > http://www.j-paine.org/rtaxben/R/reveal/rtaxben_anim.html . Exactly the > same material, but, as explained in my introduction, quicker to read. Read > the blog post first. > > Our model, R-Taxben, is a microeconomic model, which simulates at the level > of individual people rather than bulk variables such as unemployment and > inflation. It works, roughly speaking, by reading survey data about actual > households, then applying taxes and benefits to calculate net income and > expenditure from gro...

Hi there everyone, I have the following model (this is naturally a simplified version just for showing my problem, in case you're wondering this is a translog cost function with the associated cost share equations): C ~ á + â1 log X + â2 log Y + ã1 log Z + ã2 log XX C1 ~ â1 + â2 log YY + ã1 log ZZ Then I have some restrictions on the coefficients, namely that the sum of â equal 1 and the

All, I would like to announce our Official CentOS CD/DVD Vendor Program. We currently have 3 vendors, and 2 more who are putting together their information. (Not bad ... the official program has been going for less than 12 hours :) The details of the program (how to get in it, what they give back to the CentOS Project, etc.) are here: http://www.centos.org/images/CentOS_CD_Vendors.pdf Here is