search for: paczkowski

Good morning, Does anyone know of a package or function to do a beta regression? Thanks, Walt Paczkowski _________________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 (V) 609-936-8999 (F) 609-936-3733

Good morning, Is it possible to open an html file using IE but from within R? I wrote a small function to generate tables in html but I'd like to write another function to call IE and open the html file. Thanks, Walt Paczkowski ________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 (V) 609-936-8999 (F) 609-936-3733

...nt directories for different projects on Windows XP. There is an icon on my desktop for each project so all I have to do is click on the icon to open R for a specific project, i.e. a specific .RData file. How do I change to another .RData file from within R without first closing R? Thanks, Walt Paczkowski

...n at once. Since this is a very large file (several hundred thousand lines), this is not practical. Hence the idea of reading one line at at time. The question is, can R read one line at a time? If so, how? Any suggestions are appreciated. Thanks, Walt ________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 ________________________ (V) 609-936-8999 (F) 609-936-3733 walt at dataanalyticscorp.com www.dataanalyticscorp.com _____________________________________________________ -- ________________________ Walter R. Paczkowski, Ph.D. Dat...

...model in R (not a McFadden conditional logit). For instance, I'd like to estimate the probability of someone having one of eight titles in a company with the independent variables being the company characteristics. A binary logit is well documented. What about the multinomial? Thanks, Walt Paczkowski

Good morning, I'd like to look at the code for the R function head. When I type just the word head, I get back function(x, ...) UseMethod("head") <environment: namespace:utils> I expected to see several lines of R code. Any suggestions? Thanks, Walt Paczkowski

...riage return is found, it would simply be ignored on the writing back out part. But how do I identify a carriage return? What is the code or symbol? Is there any easier way to rid the file of carriage returns in the middle of the input lines? Any help is appreciated. Walt Paczkowski _________________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 (V) 609-936-8999 (F) 609-936-3733

Hi, I want to view the code for the function confint in the stats package. Typing just confint doesn't work. How can I view the code? Thanks, Walt ________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 ________________________ (V) 609-936-8999 (F) 609-936-3733 walt at dataanalyticscorp.com www.dataanalyticscorp.com _____________________________________________________ -- ________________________ Walter R. Paczkowski, Ph.D. Dat...

...file19621.log in the current directory NULL Warning messages: 1: "sas" not found 2: SAS return code was -1 in: read.ssd("c:\\", "d") I have SAS 9.1 running on my computer so SAS is there. What am I doing wrong? Thanks, Walt ________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 (V) 609-936-8999 (F) 609-936-3733 www.dataanalyticscorp.com [[alternative HTML version deleted]]

...ze is 75. The consumption distributions are highly skewed for each product. He would like a pairwise comparison test of the products, much like Tukey's HSD but using medians rather than means. Is there such a median comparison test in R? Thanks, Walt ________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 ________________________ (V) 609-936-8999 (F) 609-936-3733 walt at dataanalyticscorp.com www.dataanalyticscorp.com

...screen was white, blank, and completely unresponsive. The only thing I could do was close R by clicking on the "X" in the upper right corner of the window. How can I use my editor but be able to continue using R after I close the editor? What extra setting am I missing? Thanks, Walt Paczkowski ________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 (V) 609-936-8999 (F) 609-936-3733 www.dataanalyticscorp.com [[alternative HTML version deleted]]

...iz 2.20.3. I have this and installed it but the Windows 7 system path variable has to be modified to include the path to the graphviz bin file. How do I do this on Windows 7? It's been a long time since I had to change the path variable. Thanks, Walt ________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 ________________________ (V) 609-936-8999 (F) 609-936-3733 walt at dataanalyticscorp.com www.dataanalyticscorp.com

...work at times with datasets in the hundreds of thousands (and on occasion, millions) of records. SAS, and especially PROC SQL, are invaluable for this. But once I get to datasets manageable for R/S-Plus, then I ship to these tools for the programming and graphics. This seems to work great. Walt Paczkowski Data Analytics Corp. -----Original Message----- >From: Rob Robinson <rob.robinson at bto.org> >Sent: Jan 17, 2008 4:31 AM >To: r-help at stat.math.ethz.ch >Subject: Re: [R] things that are difficult/impossible to do in SAS or SPSSbut simple in R > > >I wonder if those w...

...uppose I have a string "x$Expensive". I want to find the position of the $ in this string; i.e., I want a function that returns 2. I tried grep, regexpr, etc with no luck, unless I'm just using them incorrectly. Any suggestions? Thanks, Walt ________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 ________________________ (V) 609-936-8999 (F) 609-936-3733 walt at dataanalyticscorp.com www.dataanalyticscorp.com

...t][ODBC Excel Driver] Syntax error in FROM clause." "[RODBC] ERROR: Could not SQLExecDirect 'SELECT * FROM Sheet1$'" Any advise as to why and how to fix it? What's the syntax error that I'm just not seeing? Thanks, Walt -- ________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 ________________________ (V) 609-936-8999 (F) 609-936-3733 dataanalytics at earthlink.net www.dataanalyticscorp.com

...'m doing wrong? Why the error message? Also, the StatTransfer program sometimes fails to close so if I repeatedly call my function I'll have multiple occurrences of StatTransfer running. How can I force it to close after the transfer? Thanks, Walt ________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 ________________________ (V) 609-936-8999 (F) 609-936-3733 walt at dataanalyticscorp.com www.dataanalyticscorp.com

...s do anything to the significance of the estimates (e.g., am I always guaranteed very small p-values?)? Is oversampling of the target value the key and if so, how do I calculate weights for the estimations? Any guidance or suggestions in this area are definitely welcome. Walt Paczkowski _________________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 (V) 609-936-8999 (F) 609-936-3733

...because I keep looking for different tests but never know what's available. I'm thinking of a regular expression statement but I'm not sure how this would work for functions. Or is there a list already available? Any suggestions? Thanks, Walt ________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 ________________________ (V) 609-936-8999 (F) 609-936-3733 walt at dataanalyticscorp.com www.dataanalyticscorp.com

...ndent. This way, I could pull out the people I need for a particular segment and use just those coefficients. Sawtooth's program for MaxDiff can do this. Is there any R package to do an HB estimation for a discrete choice (logit) model? Thanks, Walt ________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 ________________________ (V) 609-936-8999 (F) 609-936-3733 walt at dataanalyticscorp.com www.dataanalyticscorp.com

...run(), only the last graph appears, the first five apparently being overwritten. How do I get all six in separate windows, ready for copying? By the way, is the a way to create a PowerPoint deck directly in R the way you can in S-Plus? Thanks, Walt -- ________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 ________________________ (V) 609-936-8999 (F) 609-936-3733 dataanalytics at earthlink.net www.dataanalyticscorp.com