Re: How to successfully ask a question on Statalist
Hello everyone, I am having troubles with reshaping my data. The data currently looks as follows:Firm Variable 1990 1991 1992 etc.x 1x 2y 1y 2z 1z 2I would like the data to look as follows:Firm Year...
View ArticleRe: Understanding matrices intuitively, part 2, eigenvalues and eigenvectors
Excellent explanation of eigenvalues and eigenvectors.
View ArticleRe: The Penultimate Guide to Precision
I think I found very minor typo. In 4.4, "actually stored was 16,777,200!", I think that should 16,777,220 (as given in the table).
View ArticleRe: Understanding matrices intuitively, part 2, eigenvalues and eigenvectors
Thank you very much for the existence of this post :)Regarding your last paragraph"It turns out that A-1 has the same eigenvectors as A; its eigenvalues are λ-1 of the original’s"it turns out that I...
View ArticleRe: Understanding matrices intuitively, part 2, eigenvalues and eigenvectors
There is no problem. To within rounding error 3.2247 is the reciprocal of 0.3101 and 0.7753 is the reciprocal of 1.2899. And the eigenvectors are also the same in both cases: change of sign (or any...
View ArticleRe: The Penultimate Guide to Precision
Right you are or, er, were. I fixed it. Thank you.
View ArticleRe: Understanding matrices intuitively, part 2, eigenvalues and eigenvectors
Oh! Now I see that the eigenvectors are the same. Thanks! Nevertheless, I still don't get the thing with the eigenvalues. eig(A) l = 3.2247 0 0 0.7753 eig(inv(A)) l_i = 1.2899 0 0 0.3101inv(l)= 0.3101...
View ArticleRe: Understanding matrices intuitively, part 2, eigenvalues and eigenvectors
The order in which the eigenvectors and eigenvalues are presented is just arbitrary. Matlab (or Stata, or any other software) will present them in whatever order their particular algorithm happens to...
View ArticleRe: Understanding matrices intuitively, part 2, eigenvalues and eigenvectors
Got it! Thanks a million, Clyde! :)
View ArticleRe: The Penultimate Guide to Precision
Hm, something about the new Haswell chips caught my eye."On the floating point side, Intel's new Fused Multiply Add (FMA) extension includes both 256-bit and 128-bit instructions. Compared to the...
View ArticleRe: Multilevel linear models in Stata, part 1: Components of variance
This tutorial is extremely helpful. I'd love to see examples with crossed random effects (e.g., two random variables that are crossed with each other, such as subject and item as is often the case in...
View ArticleRe: Using Stata’s random-number generators, part 2, drawing without...
instead of save the generated samples separately save sample`i', replace. Is there a way to put all generated samples as different variables and save them in one data base?
View ArticleRe: Comparing predictions after arima with manual computations
Quickly this site will indisputably be famous among all blogging people, because of its fastidious articles or reviews.Download the manual here
View ArticleRe: Use poisson rather than regress; tell a friend
if the dependent variable has negative values as well, is it possible to add a constant to make it all positive and then run Poisson regression rather than log transformation and regress?
View ArticleRe: How to successfully ask a question on Statalist
Hey everyone, I have a bit of trouble with plotting my continuous interactions using the marginsplot command after xt logit. The coefficient for the interaction comes up positive, but when I use...
View ArticleRe: Using Stata’s random-number generators, part 1
Please, I generated the random variable and I'm trying to run spmat command. However stata give me an error : "Variable _ID not found"
View ArticleRe: How to successfully ask a question on Statalist
Q1. Is there a limit of countries to be used for cross-sectional analysis?Q2. Can I use 7 countries across 20 years for panel regression?
View ArticleRe: How to successfully ask a question on Statalist
I want to know if it's possible to insert both short-run and long-run restrictions in SVAR on stata (12)
View ArticleRe: Stata 12 Announced
And - did you succeed in doing ACE models in STATA with binary data? Just wanted to check before I start trying myself! bw Jim
View ArticleRe: Stata 13 ships June 24
I have to say I'm disappointed by what is not in the new release of Stata. I was hoping to see more options for the control of output. None of Stata's output other than Graphs can be described as...
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