search for: saurav

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2009 Jul 11
2
Heckman Selection Model/Inverse Mills Ratio
...the above to run the outcome equation model using OLS with the Inverse mills ratio as the control for selection bias, kindly help, hence I need to get the IMR 3. How can this eb done in R using my concept or otherwise does there exist anotehr way of doing what I wish to achieve Please help Thanks# Saurav -- Dr.Saurav Pathak PhD, Univ.of.Florida Mechanical Engineering Doctoral Student Innovation and Entrepreneurship Imperial College Business School s.pathak08@imperial.ac.uk 0044-7795321121 [[alternative HTML version deleted]]
2009 Oct 18
2
How to create MULTILEVELS in a dataset??
...uch that I can perform a multilevel model as follows: lmer(y ~ education-level + householdincome + countrygdp + countrygdpsquare + (1 I Level2),family=binomial(link="probit),data=dataset) Please kindly help me with the relevant commands for creating this Level2 (having two variables) Thanks Saurav Dr.Saurav Pathak PhD, Univ.of.Florida Mechanical Engineering Doctoral Student Innovation and Entrepreneurship Imperial College Business School s.pathak08@imperial.ac.uk 0044-7795321121 [[alternative HTML version deleted]]
2005 Feb 28
2
3d scatterplots of more than 1 data set
...that is what i need. but i cannot seem to code different sets of data differently. any help will be very helpful. i tried scatterplot3d, but it is difficult to get the right angle in it. i need to be able to rotate the axes, and export an eps file from the right angle. thanks in advance. -- saurav
2009 Jul 01
2
getOptions("max.print") in R
...ber of observations in "variab" ) minus 797124 observations and prompts the following message [ reached getOption("max.print") -- omitted 797124 entries ]] Is there a way to see the entire set of data, ie all of 900,000 obs, and how to then save this "variab" Thanks Saurav -- Dr.Saurav Pathak PhD, Univ.of.Florida Mechanical Engineering Doctoral Student Innovation and Entrepreneurship Imperial College Business School s.pathak08@imperial.ac.uk 0044-7795321121 [[alternative HTML version deleted]]
2003 Jan 14
4
density plot - beginner's question
...lor coded two dimensional plot. I have tried using image(x, y, density) but i am asked to put the data in ascending order. i am not sure how i may put grid points in an ascending order. I would also like to know if i could use any other function, other than image. thank you in advance. -- saurav
2009 Jul 12
2
Heckman Selection MOdel Help in R
Hi Saurav! On Sun, Jul 12, 2009 at 6:06 PM, Pathak, Saurav<s.pathak08 at imperial.ac.uk> wrote: > I am new to R, I have to do a 2 step Heckman model, my selection equation is > below which I was successful in running but I am unable to proceed further, > > > > I have so far used the...
2007 Jan 24
2
modify rectangle color from image
...ve a 5x5 matrix, say, m. m <- matrix(rnorm(25), nrow=5) I create a grid of rectangles by: image(m) Now I want to change the color of rectangle (3,3) to blue. I don't know how this could be done, and searching the web has given me no hint. Thanks for your help. -- saurav
2009 Sep 30
3
django like admin interface
...ermission for different methods (create, edit etc.) in controller based on roles . It should be similar to django administration, where we can assign permission on methods based on the role. How can i do the implementaton ? Can anybody give me some pointers on how to start ? Thanks and Regards, Saurav -- Posted via http://www.ruby-forum.com/.
2009 Jun 29
2
Large Stata file Import in R
...ing able to import the stata file in R I am therefor confused whteher there is problem with the version of my stata file (which should not eb the case as I the smaller file of both versions are working fine) or is it the size issue, Its pretty important for me, kindly address this question Thanks Saurav -- Dr.Saurav Pathak PhD, Univ.of.Florida Mechanical Engineering Doctoral Student Innovation and Entrepreneurship Imperial College Business School s.pathak08@imperial.ac.uk 0044-7795321121 [[alternative HTML version deleted]]
2011 Oct 07
1
loess question
...00,1:100,matrix(f.predict$se,nrow=100)) I get an image of the standard error that has peaks at regular grid nodes. Shouldn't I expect to see roughly the same error that I put in (in this case g_noise)? I notice that the noise peaks move apart for higher span values. Thanks for your help! Saurav
2008 Apr 25
6
ActionMailer
...he user, only after he logs in for the first time in my site, then the second email should be sent. Can anybody give me some suggestion on how to do it ?? NB: When the user clicks on the activation link, he is not directed to user home page, only the home page of my website is displayed. Thanks Saurav -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gman...
2011 Mar 12
1
Issue creating vm channel
Hello, I am trying to create a lucid guest VM with a vmchannel between the guest and the hypervisor. Details below: KERNEL: # uname -a Linux saurav-desktop 2.6.38-2-generic #29~lucid1-Ubuntu SMP Mon Feb 7 13:35:14 UTC 2011 i686 GNU/Linux QEMU: # /usr/bin/qemu --version QEMU emulator version 0.13.0, Copyright (c) 2003-2008 Fabrice Bellard LIBVIRT: # /usr/sbin/libvirtd --version /usr/local/sbin/libvirtd (libvirt) 0.8.8 Below is a snippet of...
2003 Feb 13
2
multi-color plot
...o make multi-color plots. that is, i generally use, plot(x, y, type="n") text(x, y, labels=class) here, the vector class denotes the class of each point. there are usually 3-4 classes of points. how may i display the different classes in different colors? thanks for any help. -- saurav
2012 May 03
1
cannot calculate standard estimate with predict on loess
...an=span, se=TRUE) p<- predict(l, se=FALSE) I have no problem, and p$fit gives me the desired fitted values. Note that the only difference in this piece of code is se=FALSE. My data d is a vector, and x and y are vectors too of the same length. Any help will be greatly appreciated. Thanks, Saurav
2009 Jul 16
1
PROBIT REGRESSION FOR GROUPED/CLUSTERED DATA
...n my case) based upon the uniqueness of "yearctrty" I have worked weeks on this, kindly help me, I think it is a small issue to fix in the equation, although since I am new to R, I do not exactly know what exactly will fix my problem, so any help will be highly appreciated Thanks -- Dr.Saurav Pathak PhD, Univ.of.Florida Mechanical Engineering Doctoral Student Innovation and Entrepreneurship Imperial College Business School s.pathak08@imperial.ac.uk 0044-7795321121 [[alternative HTML version deleted]]
2009 Jun 29
1
Stata file Import and Analysis in R
...(.dta file) of size 600 MB, I need to import it in R and do a 2SLS multilevel analysis on the data set. I would eb grateful if help is provided for the first part of how to import this big file from Stata to R and then how to open the imported Stata file in R? Kindly help Thanks in advance -- Dr.Saurav Pathak PhD, Univ.of.Florida Mechanical Engineering Doctoral Student Innovation and Entrepreneurship Imperial College Business School s.pathak08@imperial.ac.uk 0044-7795321121 [[alternative HTML version deleted]]
2009 Jul 10
0
GLM for Probit for Panel Data
...+ gemedu + gemhinc + es_gdppc + imf_pop + estbbo_m, family = binomial(link = "probit")) What changes/additions do I make to this above probit regression command such that the variable "yearctry" could be passed/assigned as the panel variable? Kindly help Thanks in advance Saurav -- Dr.Saurav Pathak PhD, Univ.of.Florida Mechanical Engineering Doctoral Student Innovation and Entrepreneurship Imperial College Business School s.pathak08@imperial.ac.uk 0044-7795321121 [[alternative HTML version deleted]]
2009 Jul 15
0
DECLARING A PANEL VARIABLE???
...I cant make the regression recognise "yearctry" as the panel variable in the regression myProbit<- glm(s ~ age + gender + gemedu + gemhinc + es_gdppc + imf_pop + estbbo_m, family = binomial(link = "probit"), data = adpopdata) Can anyone help me do this please??? Thanks Saurav -- Dr.Saurav Pathak PhD, Univ.of.Florida Mechanical Engineering Doctoral Student Innovation and Entrepreneurship Imperial College Business School s.pathak08@imperial.ac.uk 0044-7795321121 [[alternative HTML version deleted]]
2009 Oct 17
0
lmer function and Inverse mills ratio
...level probit ( ie please help me with the command syntax)?* The second question is, *how can I then subsequently calculate the Inverse Mills ratio after the above probit is calculated using lmer?* Is there any other way (if lmer does not do this) to get IMR of a 3 level probit Kindly help Thanks Saurav -- Dr.Saurav Pathak PhD, Univ.of.Florida Mechanical Engineering Doctoral Student Innovation and Entrepreneurship Imperial College Business School s.pathak08@imperial.ac.uk 0044-7795321121 [[alternative HTML version deleted]]
2009 Oct 17
0
how to cluster data for use with lmer
...0.071 0.314 -0.297 0.256 *The model did not recognise group to be yearctry and shows 1 instead of 239,* can somebody help me as to how to make my model recognise es_gdppcppp as a country level variable grouped by yearctry (such that yeractry no of obs should be 239) Please help Thanks in advance Saurav -- Dr.Saurav Pathak PhD, Univ.of.Florida Mechanical Engineering Doctoral Student Innovation and Entrepreneurship Imperial College Business School s.pathak08@imperial.ac.uk 0044-7795321121 [[alternative HTML version deleted]]