search for: utsa

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2011 Jun 24
3
Fwd: Extract element of a list based on an index value
...y suggestions would be greatly appreciated. > > Best, > Corey > > > Corey Sparks > Assistant Professor > Department of Demography > College of Public Policy > 501 West Durango Blvd > Monterrey Building 2.270C > San Antonio, TX 78207 > corey.sparks 'at' utsa.edu > 210 458 3166 > Latitude: 29.423614 / Longitude: -98.504282 >
2008 Oct 29
2
Help using tapply with multiple variables
...he function mapply will take multiple arguements, but I don't think it will use an INDEX like tapply. Any comments or clarification would be most appreciated. Corey -- Corey Sparks Assistant Professor Department of Demography and Organization Studies University of Texas at San Antonio One UTSA Circle San Antonio, TX 78249 210-458-6858 corey.sparks at utsa.edu https://rowdyspace.utsa.edu/users/ozd504/www/index.htm
2010 Mar 10
1
Strange result in survey package: svyvar
...ls_2.10.1 And have the same error on a linux server. Thanks, Corey -- Corey Sparks Assistant Professor Department of Demography and Organization Studies University of Texas at San Antonio 501 West Durango Blvd Monterey Building 2.270C San Antonio, TX 78207 210-458-3166 corey.sparks 'at' utsa.edu https://rowdyspace.utsa.edu/users/ozd504/www/index.htm
2010 Jan 05
1
Multivariate Poisson GLM??
...ponse vector I would gladly appreciate any suggestions. Corey Sparks -- Corey Sparks Assistant Professor Department of Demography and Organization Studies University of Texas at San Antonio 501 West Durango Blvd Monterey Building 2.270C San Antonio, TX 78207 210-458-3166 corey.sparks 'at' utsa.edu https://rowdyspace.utsa.edu/users/ozd504/www/index.htm
2008 Jul 16
4
Likelihood ratio test between glm and glmer fits
...ectly or are the two models even able to be compared? they are both estimated via maximum likelihood, so they should be, I think. Any help would be appreciated. Corey Corey S. Sparks, Ph.D. Assistant Professor Department of Demography and Organization Studies University of Texas San Antonio One UTSA Circle San Antonio, TX 78249 email:corey.sparks@utsa.edu web: https://rowdyspace.utsa.edu/users/ozd504/www/index.htm [[alternative HTML version deleted]]
2007 Sep 27
1
Reading SAS SD2 Data file
...ard format from SAS. I see the routines that read the SAS XPORT format (foreign, Hmisc), but is there any way to read this one? Any help would be greatly appreciated. Corey Sparks Corey Sparks Assistant Professor Department of Demography and Organization Studies University of Texas-San Antonio One UTSA Circle San Antonio TX 78249 Phone: 210 458 6858 corey.sparks@utsa.edu [[alternative HTML version deleted]]
2009 Feb 25
1
Using gregexpr with multiple search elements
...ch for elements 1 through 5 of text, since either "at" or "og" occurs. If anyone might have an idea about this I would greatly appreciate it. Best, Corey Corey Sparks Assistant Professor Department of Demography and Organization Studies University of Texas at San Antonio One UTSA Circle San Antonio, TX 78249 210 458 6858 corey.sparks at utsa.edu
2008 Jul 06
1
R-SIG-Debian Digest, Vol 35, Issue 1
...Go to the terminal (in the accessories menu) and type R. It will run in command line. You might also want to install r-base-dev if you want to compile libraries. Corey S. Sparks, Ph.D. Assistant Professor Department of Demography and Organization Studies University of Texas San Antonio One UTSA Circle San Antonio, TX 78249 email:corey.sparks at utsa.edu web: https://rowdyspace.utsa.edu/users/ozd504/www/index.htm -----Original Message----- From: r-sig-debian-bounces at r-project.org on behalf of r-sig-debian-request at r-project.org Sent: Sun 7/6/2008 5:00 AM To: r-sig-debian at r-proj...
2007 Dec 05
4
coxme frailty model standard errors?
...151837 1.05 0.2900 bo2 0.5046991 1.656487 0.2510523 2.01 0.0440 bo3 1.0606144 2.888145 0.2726000 3.89 0.0001 Random effects: ~1 | isl isl Variance: 0.3876189 Corey Sparks Assistant Professor Department of Demography and Organization Studies University of Texas-San Antonio One UTSA Circle San Antonio TX 78249 Phone: 210 458 6858 corey.sparks at utsa.edu
2009 Sep 22
2
Subsetting dataframes based on column names
...help would be greatly appreciated. Best, Corey Corey Sparks Assistant Professor Department of Demography and Organization Studies University of Texas at San Antonio College of Public Policy 501 West Durango Blvd Monterey Building 2.270C San Antonio, TX 78207 210 458 3166 corey.sparks 'at' utsa.edu
2011 Jan 13
1
Openbugs and rbugs on mac with wine
...espace (and not attached): [1] grid_2.12.1 tools_2.12.1 Thanks, Corey Corey Sparks Assistant Professor Department of Demography and Organization Studies University of Texas at San Antonio 501 West Durango Blvd Monterey Building 2.270C San Antonio, TX 78207 210-458-3166 corey.sparks 'at' utsa.edu
2011 Jan 09
1
question about the chow test of poolability
Good day R-listers, My question is more a statistical question than an R related question, so please bear with me i'm currently applying the chow test of poolability in fact i'm working with panel N=17 T=5 , and my model looks like this : Yit= a0+B1X1+B2X2+B3X3+B4X4+eit My question is the following when i'm Testing for the equality of the coefficients of the unpooled data (the
2011 Jul 08
1
Visualizing a dissimilarity matrix in Euclidean space
Hi, I have a set of nodes and a dissimilarity matrix for them, as well as a csv file in which the diss matrix has been converted to [node_1, node_2, dissimilarity] format. I would like to visualize this as a graph in Euclidean space (that is, similar nodes clumped together in clusters), rather than the seriation visualization given by dissplot(). I am using Network WorkBench for my
2008 Dec 18
1
svyglm fit method?
...models are not fit by maximum likelihood, so my question is what is the fitting method? Pseudo likelihood? Generalized least squares? Thanks for any insight. Best, Corey Corey Sparks Assistant Professor Department of Demography and Organization Studies University of Texas at San Antonio One UTSA Circle San Antonio, TX 78249 210 458 6858 corey.sparks at utsa.edu
2010 Mar 04
1
logistic regression by group?
Hi, Looking for a function in R that can help me calculate a parameter that maximizes the likelihood over groups of observations. The general formula is: p = exp(xb) / sum(exp(xb)) So, according to the formulas I've seen published, to do this "by group" is product(p = exp(x_i * b_i) / sum(exp(x_i b_i))) Where i represents a "group" and we iterate through each group.
2010 Mar 10
1
Displaying political boundaries
? Dear all,? ? ? I am new in the R environment. How can I enable political boundaries in R? I want plot a variable (e.g., temperature) only for Mozambique. ? ?Sincerely, ? Arlindo ? ? ? Arlindo ____________________________________________________________________________________ Veja quais s?o os assuntos do momento no Yahoo! +Buscados http://br.maisbuscados.yahoo.com
2010 Jul 18
2
Neural Network
Hi all, I am working for my master's thesis and I need to do a neural network to forecast stock market price, with also external inputs like technical indicators. I would like to know which function and package of R are more suitable for this study. Thanks a lot for your response, Arnaud TREBAOL. -- Arnaud Trébaol T.I.M.E. Student Ecole Centrale de Lille (09) Politecnico di Milano (10)
2010 Jul 25
2
R equivalent of SAS proc freq
Dear R-users, I am looking for a R function that would be the equivalent of the SAS proc freq ( http://support.sas.com/documentation/cdl/en/procstat/63104/HTML/default/viewer.htm#/documentation/cdl/en/procstat/63104/HTML/default/procstat_freq_sect006.htm). The table, ftable, xtabs functions are close but do not quite offer the same capabilities (e.g. they just return counts and no %ages as far as
2013 Jan 15
0
smbldap-tool scripts not executing
..., but downgraded to 3.5 as part of CentOS 6. As a test, I put a typo in the config for the location of the smbldap-useradd script, but no errors. So Samba isnt executing the script and I'm not sure why not. -- David Noriega CSBC/CBI System Administrator University of Texas at San Antonio One UTSA Circle San Antonio, TX 78249 Office: BSE 3.114 Phone: 210-458-7100 http://www.cbi.utsa.edu Please remember to acknowledge the RCMI grant , wording should be as stated below: This work received computational support from Computational System Biology Core, funded by the National Institute on Minorit...
2008 Feb 18
4
Compare mean survival time
Dear List, Does anybody no how to compare mean survival times for two (more) groups in R? What test statistics should I use? Thank you very much! Joe [[alternative HTML version deleted]]