Displaying 20 results from an estimated 300 matches similar to: "y label after axis (4)"
2003 Oct 29
2
constrained OLS on coefficient
Hi,
I would like to know if anyone has any idea of how to run an OLS with
constraints? I need to contraint a coefficient estimate in the model equal to
1, and I am not sure how to include it into the OLS estimation...
I was hoping to find something like "cnsreg" in STATA..
thank you
Soyoko
______________________________________
Ms. Soyoko Umeno
Graduate Research Assitant for the
2003 Nov 06
2
Number of Days
Hi everyone,
I have been trying to compute numbers of days between two dates as follows:
> x <- c("1jan1960", "2jan1960", "31mar1960", "30jul1960")
> z <- format(x, "%d%b%Y")
> ex <- c("1jan1961", "15jan1960", "21mar1975", "10jul1981")
> ez <- format(ex, "%d%b%Y")
> ez-z
2003 Oct 30
0
Variance of a non-linear combination of the coefficient e stiamtes
< In Stata, I can just use "bs" function ...>
in STATA the bs command runs a bootstrap
If you want to use the bootstrap function (or you could linearize b*c/a :)
look under ?boot (you may need to load the package first).
Usage:
boot(data, statistic, R, sim="ordinary", stype="i",
strata=rep(1,n), L=NULL, m=0, weights=NULL,
2003 Oct 29
0
constrained OLS
Hi,
I would like to know if anyone has any idea of how to run an OLS with
constraints?
thank you
Soyoko
______________________________________
Ms. Soyoko Umeno
Graduate Research Assitant for the Illinois-Missouri Biotechnology Alliance (IMBA) at http://www.imba.missouri.edu/
Ph.D. Student at the Department of Agricultural and Consumer Economics
at the University of Illinois at Urbana-Champaign
2003 Oct 30
0
Variance of a non-linear combination of the coefficient estiamtes
Hi,
I would like to know if anyone knows how to compute a variance of the
non-linear combination of the coefficient estimates.
Say, I get a model of
y~c+ax+bz (1)
where x and z are the independent variables, c is the constant estimate, and a
and b are the coefficient estimates.
Then, I want to know the variance of
b*c/a (2).
How am I going to get it?
In Stata, I can just use
2004 Jul 20
4
read a file
Hi everyone,
I am having a problem reading my data file in R. It only
reads part of it, and stops doing it in half way through the
data. I looked at the observation where reading stops, but
it is really not different from the observations read it. I
expanded the matrix size, but it did not help. I am using a
text format to read the data file. Could someone help me?
Thank you
Soyoko
2003 Nov 07
3
Two Y-axises and One X-axis
Hi,
I would like to know if anyone knows how to draw a plot with two Y-axises and
one X-axis? When you have two sets of y values that do not have the same
scale, but correspond to the same x value, I would like to plot them on one
graph.
Could you please help me?
Thank you
Soyoko
2008 Jul 31
1
nls weights warning message
The following warning message occurs when running the nls on some data:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Warning message:
In is.na(wts) : is.na() applied to non-(list or vector) of type 'NULL'
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
and I would like to know what is causing it and how I can fix it.
As an example, the following, from Venables and Ripley, which
2007 Oct 01
4
how to plot a graph with different pch
I am trying to plot a graph but the points on the graph should be
different symbols and colors. It should represent what is in the legend.
I tried using the points command but this does not work. Is there
another command in R that would allow me to use different symbols and
colors for the points?
Thank you kindly.
data(mtcars)
plot(mtcars$wt,mtcars$mpg,xlab= "Weight(lbs/1000)",
2013 May 20
1
How to fit a normal inverse gaussian distribution to my data using optim
Dear R Help
Please forgive my lack of knowledge,.I would be very thankful for some help.
Here is my problem:
I was using optim to estimate parameters of a model and I get this error message
"Error in optim(x0, fn = riskll, method = "L-BFGS-B", lower = lbs, upper = ubs, :
L-BFGS-B needs finite values of 'fn'"
Below is the R code I have written.
2001 May 22
2
MASS data sets
I'm running R 1.2.2 under windows 98 on a Pentium 133 laptop.
I can't seem to retrieve the package MASS data sets:
> library(MASS)
> data(wtloss)
Warning message:
Data set `wtloss' not found in: data(wtloss)
> data(abbey)
Warning message:
Data set `abbey' not found in: data(abbey)
And yet all the .rda files for the MASS datasets are in
D:\Program
2010 Jul 14
2
Merging columns along time line
I am resending this, as I believe it has not arrived on the mailing
list when I first emailed.
I have a set of labels arranged along a timeframe in a. Each label has
a timestamp and marks a state until the next label. The dataframe a
contains 5 such timestamps and 5 associated labels. This means, on a
continious scale between 1-100, there are 5 markers. E.g. 'abc' marks
the timestampls
2001 Sep 30
1
MASS data sets
All the usual MASS data sets are nicely sitting in
D:\Program Files\rw1022\library\MASS\data
on my laptop
and yet:
> library(MASS)
> data(wtloss)
Warning message:
Data set `wtloss' not found in: data(wtloss)
what could be wrong? I'm running 1.2.2 on Win98.
Murray Jorgensen
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r-help mailing list --
2006 May 23
11
New "made with Rails" site launched: www.invitika.com
We''ve finally finished up work on our application and are now beginning
our beta. The site (SMS+mobile blogging+event planning+LBS+photos) is
built using 100% Ruby on Rails. Many thanks to all the people who
answered questions over the months on this list. Our experience with
Rails was overwhelmingly positive!
We''d love to hear any feedback you might have:
2009 Aug 19
2
line plot
Dear useRs,
How can I draw a barplot, but instead of bars, I'd get lines?
Thanks,
Kind regards,
Rafael.
____________________________________________________________________________________
[[elided Yahoo spam]]
[[alternative HTML version deleted]]
2009 Oct 15
2
How to right-align labels in dotchart
I have only just discovered the joys of the dotchart (since I am reading
William Cleveland's
--
Sean Carmody
The Stubborn Mule
http://www.stubbornmule.net
http://twitter.com/seancarmody
[[alternative HTML version deleted]]
2012 Nov 17
3
Reshaping a dataframe
Seems like this should be easy but I'm struggling a bit. How do I rearrange a
data frame to go from the first one to the second shown below ?
State Date lbs
TX 200701 400
TX 200702 650
TX 200703 950
TX 200704 1000
FL 200701 200
FL 200702 300
FL 200703 500
FL 200704 333
NJ 200701 409
NJ 200702 308
NJ 200703 300
NJ 200704 800
Date TX FL NJ
200701 400 200 409
200702 650
2009 Aug 16
4
How show validation errors in form_remote_tag?
I suspect this has been asked 400 times, but Google yields 2-3 rather
complex gymnastics in blogs (and possibly dated), and searching list
archives on ruby-forum proves kinda useless.
Using standard forms, it''s fairly easy to use
@object.errors[:field_name] in the form to embed an error message right
next to the field that has the invalid entry. The controller uses a
simple conditional
2013 Mar 28
2
ggplot2: less than equal sign
Hi
I am trying to add a less than equal sign to a plot. I have previously done
this using unicode but is not working in this instance. Any suggestions
would be great
thanks
example code:
library(ggplot2)
df<-data.frame(vis=c(0,0,1,1) , count=c(10,15,20,10) , grp=c(0,1,0,1))
df$grp <-factor(df$grp ,levels=c(0,1) , labels =c("x \u2265 10" , "x > 10"))
ggplot(df,
2010 May 02
2
Calculation error
Dear Rxperts,
Running the following code:
=======================================================
twlo=10; twhi=20; wt=154; vd=0.5; cl=0.046; tau=6; t=3; F=1;
wtkg <- wt/2.2 # convert lbs to kg
vd.pt <- wtkg * vd # compute weight-based vd (L)
cl.pt <- wtkg * cl # compute CL (L/hr)
k <- cl.pt/vd.pt # compute k (hr^-1)
cave <-