This should do it for you:
base - http://research.stlouisfed.org/fred2/data/;
files - lapply(state.abb, function(.state){
+ cat(.state, \n)
+ input - read.table(paste0(base, .state, RGSP.txt)
+ , skip = 11
+ , header = TRUE
+ , as.is = TRUE
+ )
+ input$DATE - as.Date(input$DATE, %Y-%m-%d)
+ input$SERIES - paste0(.state, RGSP)
+ input
+ })
AL
AK
AZ
AR
CA
CO
CT
DE
FL
GA
HI
ID
IL
IN
IA
KS
KY
LA
ME
MD
MA
MI
MN
MS
MO
MT
NE
NV
NH
NJ
NM
NY
NC
ND
OH
OK
OR
PA
RI
SC
SD
TN
TX
UT
VT
VA
WA
WV
WI
WY
result - do.call(rbind, files)
str(result)
'data.frame': 750 obs. of 3 variables:
$ DATE : Date, format: 1997-01-01 1998-01-01 1999-01-01
2000-01-01 ...
$ VALUE : int 122541 126309 130898 132699 133888 137086 140020 146937
150968 153681 ...
$ SERIES: chr ALRGSP ALRGSP ALRGSP ALRGSP ...
head(result,30)
DATE VALUE SERIES
1 1997-01-01 122541 ALRGSP
2 1998-01-01 126309 ALRGSP
3 1999-01-01 130898 ALRGSP
4 2000-01-01 132699 ALRGSP
5 2001-01-01 133888 ALRGSP
6 2002-01-01 137086 ALRGSP
7 2003-01-01 140020 ALRGSP
8 2004-01-01 146937 ALRGSP
9 2005-01-01 150968 ALRGSP
10 2006-01-01 153681 ALRGSP
11 2007-01-01 155388 ALRGSP
12 2008-01-01 155870 ALRGSP
13 2009-01-01 148074 ALRGSP
14 2010-01-01 151480 ALRGSP
15 2011-01-01 150330 ALRGSP
16 1997-01-01 37249 AKRGSP
17 1998-01-01 35341 AKRGSP
18 1999-01-01 34967 AKRGSP
19 2000-01-01 34192 AKRGSP
20 2001-01-01 35729 AKRGSP
21 2002-01-01 37111 AKRGSP
22 2003-01-01 36288 AKRGSP
23 2004-01-01 38179 AKRGSP
24 2005-01-01 37774 AKRGSP
25 2006-01-01 39836 AKRGSP
26 2007-01-01 40694 AKRGSP
27 2008-01-01 41039 AKRGSP
28 2009-01-01 44030 AKRGSP
29 2010-01-01 43591 AKRGSP
30 2011-01-01 44702 AKRGSP
On Mon, Jun 10, 2013 at 7:42 PM, arum arumk...@wrdf.org wrote:
I am downloading time series data from FRED. I have a working download,
but I
do not want to write out the download for all 50 states likes this:
IDRGSP -
read.table('http://research.stlouisfed.org/fred2/data/IDRGSP.txt',
skip=11,
header=TRUE)
IDRGSP$DATE - as.Date(IDRGSP$DATE, '%Y-%m-%d')
IDRGSP$SERIES - 'IDRGSP'
IDRGSP$DESC - Real Total Gross Domestic Product by State for Idaho, Mil.
of, A, NSA, 2012-06-05
WYRGSP - read.table('http://research.stlouisfed.org/fred2/data/WYRGSP.txt
',
skip=11, header=TRUE)
WYRGSP$DATE - as.Date(WYRGSP$DATE, '%Y-%m-%d')
WYRGSP$SERIES - 'WYRGSP'
WYRGSP$DESC - Real Total Gross Domestic Product by State for Wyoming,
Mil. of, A, NSA, 2012-06-05
RGSP - rbind(IDRGSP, WYRGSP)
I want to loop but I can not get the paste to work correctly. I am trying
this: Can someone help me figure out the loop so I can build a table for
all 50 states.
ab - c(state.abb)
base - 'http://research.stlouisfed.org/fred2/data/;
type - RGSP.txt', skip=11, header=TRUE;
tmp - NULL;
for (a in ab) {
url - paste(base, a, type, sep=);
if (is.null(tmp))
tmp - read.table(url)
else tmp - rbind(tmp, read.table(url))
}
tmp
thanks for your help
--
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