quot;Balboa","De Soto",..: 11 2 5 8 6 1 12 7 10 13 ...
all(levels(EBSurvey$lineon)==StnName)
[1] TRUE
#
str(EBDesign$NumStn)
NULL
str(EBSurvey$NumStn)
Factor w/ 12 levels "1","2","3","4",..: 10 12 4 12 8 1 8 8 12 4 ...
str(ByEBNum$StnTraveld)
Factor w/ 12 levels "1","2","3","4",..: 1 2 3 4 5 6 7 8
3 levels "Warner Center",..: 3 1 1 1 2 13 1 5 1 5 ...
> str(ByEBOn$StnName)
Factor w/ 13 levels "Balboa","De Soto",..: 11 2 5 8 6 1 12 7 10 13 ...
> all(levels(EBSurvey$lineon)==StnName)
[1] TRUE
> #
> str(EBDesign$NumStn)
NULL
> str(EBSurvey$NumStn)
Factor w/ 12 levels "1","2","3","4",..: 10 12 4 12 8 1 8 8 12 4 ...
> str(ByEBNum$StnTraveld)
;,"2","3","4",..: 10 12 4 12 8 1 8 8 12 4 ...
EBSurvey$NumStn[1:5]
[1] 10 12 4 12 8
Levels: 1 2 3 4 5 6 7 8 9 10 11 12
str(ByEBNum$StnTraveld)
int [1:12] 1 2 3 4 5 6 7 8 9 10 ...
ByEBNum$StnTraveld[1:5]
[1] 1 2 3 4 5
*
Survey$NumStn)
Factor w/ 12 levels "1","2","3","4",..: 10 12 4 12 8 1 8 8 12 4 ...
> EBSurvey$NumStn[1:5]
[1] 10 12 4 12 8
Levels: 1 2 3 4 5 6 7 8 9 10 11 12
> str(ByEBNum$StnTraveld)
int [1:12] 1 2 3 4 5 6 7 8 9 10 ...
> ByEBNum$StnTraveld[1:5]
",..: 10 12 4 12 8 1 8 8 12 4 ...
> EBSurvey$NumStn[1:5]
[1] 10 12 4 12 8
Levels: 1 2 3 4 5 6 7 8 9 10 11 12
> str(ByEBNum$StnTraveld)
int [1:12] 1 2 3 4 5 6 7 8 9 10 ...
> ByEBNum$StnTraveld[1:5]
[1] 1 2 3 4 5
>
*
Woodman
str(EBSurvey$NumStn)
Factor w/ 12 levels "1","2","3","4",..: 10 12 4 12 8 1 8 8 12 4 ...
EBSurvey$NumStn[1:5]
[1] 10 12 4 12 8
Levels: 1 2 3 4 5 6 7 8 9 10 11 12
str(ByEBNum$StnTraveld)
Factor w/ 12 levels "1","10","11",..: 1 5 6 7 8 9 10 11 12 2 ...
ByEBNum$StnTraveld[1:5]
[1] 1 2 3 4 5
Levels: 1 10 11 12 2 3 4 5 6 7 8 9
***
Canyon North Hollywood Pierce College Reseda
Sepulveda Tampa Valley College Van Nuys Warner Center Woodley Woodman
>
> str(EBSurvey$NumStn)
Factor w/ 12 levels "1","2","3","4",..: 10 12 4 12 8 1 8 8 12 4 ...
> EBSurvey$NumStn[1:5]
[1] 10 12 4 12 8
Levels: 1 2 3 4 5 6 7 8 9 10 11 12
> str(ByEBNum$StnTraveld)
Factor w/ 12 levels "1","10","11",.
prettyR_1.3-2
foreign_0.8-28
############
Robert Farley
Metro
www.Metro.net
-Original Message-
From: Farley, Robert
Sent: Monday, August 18, 2008 16:18
To: 'r-help@r-project.org'
Subject: RE: [R] Survey Design / Rake q
NumStn ) )
Error in model.frame.default(margin, data = design$variables) :
invalid type (list) for variable 'ByEBOn'
>
Robert Farley
Metro
www.Metro.net
-Original Message-
From: Stas Kolenikov [mailto:[EMAIL PROTECTED]
Sent: Wednesday, August 20, 2008 07:13
To: Farley,
On Mon, Aug 18, 2008 at 6:18 PM, Farley, Robert <[EMAIL PROTECTED]> wrote:
> My motivation is to try to correct for a "time on board" bias we see in
> our surveys. Not surprisingly, riders who are only on board a short
> time don't attempt/finish our survey forms. We're able to weight our
> surve
h_United
States.1252;LC_MONETARY=English_United
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252
attached base packages:
[1] graphics grDevices utils datasets stats methods base
other attached packages:
[1] survey_3.8 fortunes_1.3-5 moonsun_0.1prettyR_1.3-2
foreign_0.8-28
>
#
tal flaws" in this concept
Robert Farley
Metro
www.Metro.net
-Original Message-
From: Stas Kolenikov [mailto:[EMAIL PROTECTED]
Sent: Monday, August 18, 2008 10:32
To: Farley, Robert
Cc: r-help@r-project.org
Subject: Re: [R] Survey Design / Rake questions
Yo
Your reading, in increasing order of difficulty/mathematical details,
might be Lohr's "Sampling"
(http://www.citeulike.org/user/ctacmo/article/1068825), Korn &
Graubard's "Health Surveys"
(http://www.citeulike.org/user/ctacmo/article/553280), and Sarndal et.
al. Survey Math Bible
(http://www.citeul
I'm trying to learn how to calibrate/postStratify/rake survey data in
preparation for a large survey effort we're about to embark upon. As a
working example, I have results from a small survey of ~650 respondents,
~90 response fields each. I'm trying to learn how to (properly?) apply
the aforemen
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