Displaying 20 results from an estimated 300 matches similar to: "Reading data from a serial port"
2007 May 09
5
Reading a web page in pdf format
Each day the daily balance in the following link
http://www.
snamretegas.it/italiano/business/gas/bilancio/pdf/bilancio.pdf
is
updated.
I would like to set up an R procedure to be run daily in a
server able to read the figures in a couple of lines only
("Industriale" and "Termoelettrico", towards the end of the balance)
and put the data in a table.
Is that possible? If
2006 Apr 04
3
Financial functions
In what R package(-s) can I find the entire set of financial functions that
you can find in MS-Excel such as PMT, PPMT, FV and IPMT?
Ciao
Vittorio
2007 Feb 07
2
Finding not-matching rows in tables
I have these two dataframes in which 'id' is the key field
> tabella
id nome
1 1 PIEMONTE
2 2 VALLED'AOSTA
3 3
LOMBARDIA
4 4 TRENTINO
5 5 VENETO
6 6 FRIULI
AND
> tab
id nome
1 1 PIEMONTE
2 2 VALLED'AOSTA
3 3 LOMBARDIA
4 4 TRENTINO
5 25 CAMPANIA
6 28
LAZIO
Is there any
2006 Oct 27
3
R & gams
At office I have been introduced by another company to new, complex energy
forecasting models using gams as the basic software.
I have been told by the company offering the models that gams is specialised
in dealing with huge, hevy-weight linear and non-linear modelling (see an
example in http://www.gams.com/modtype/index.htm) and they say it is almost
the only option for doing it.
I would
2005 Oct 07
2
finding missing lines...
Take this as an example:
> a=data.frame(col1=c(1,2,3,4,5), col2=c
("my","beloved","daughter","son","wife"))
> b=data.frame(col1=c(1,2,4),
col2=c("my","beloved","son"))
> a
col1 col2
1 1 my
2
2 beloved
3 3 daughter
4 4 son
5 5 wife
> b
col1 col2
1 1 my
2
2009 Mar 13
2
Fourier Analysis Help
Dear R-help members,
To whom it may concern, our research group is conducting a study to evaluate the predictive
value of 24 hour blood pressure variability.
We are looking for an R routine that performs a fast Fourier transform spectral analysis
(with an output of the approximation function of the Fourier and estimates the validity
of the model for the various harmonics).
Thanks
Vittorio
2007 Sep 28
2
ELF file OS ABI invalid yes?????
Compilation of MCMCpack under freebsd 6.2 i386 fails because of the following
cryptic error:
* Installing *source* package 'MCMCpack' ...
checking for C++ compiler default output file name... a.out
checking whether the C++ compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we
2008 Jun 04
2
Reading selected lines in an .html file
Dear friend,
In an R program running permanently on a server I would like to read hour by
hour the temperature in *C and the humidity from a site like this (actually,
from many of such sites):
http://www.wunderground.com/global/stations/16239.html
How can I read the content of the site and select the info I need?
Ciao
Vittorio
2005 Sep 23
2
Strange behaviour of as.Date function
Dear All,
I'm happily extracting data of temperature from an oracle db
under R via RODBC. After manipulating the extracted data I put them
into a data.frame 'dati' which is as follows:
> dati
DATA tm.
UDINE/RIVOLTO tm.TORINO/CASELLE
1 2005-07-01
22.35 23.80
2 2005-07-02 22.70
22.85
3 2005-07-03 23.80
2014 Jun 20
10
[Bug 80266] New: Undefined operation in tgsi_ureg.c left shift of 1 by 31 places cannot be represented in type 'int'
https://bugs.freedesktop.org/show_bug.cgi?id=80266
Priority: medium
Bug ID: 80266
Assignee: nouveau at lists.freedesktop.org
Summary: Undefined operation in tgsi_ureg.c left shift of 1 by
31 places cannot be represented in type 'int'
Severity: minor
Classification: Unclassified
OS: Linux (All)
2004 Nov 24
1
Problems with samba under FreeBSD, not under Linux
Dear All,
(Context: Office windows LAN; PC Pentium 3 with 128 MB, FreeBSD 5.3.)
Here you are the unanswered message I sent to the FreeBSD mailing list:
\BEGIN{MESSAGE}
--------------------------------------------------------------------------------------
After installing and launching samba 3.0.7 daemons under my postgresql
FBSD5.3
stable server at office, I'm having trouble in connecting
2008 Feb 21
2
Unable to create/index a zoo irregular timeseries
In the text file pressione2008.csv I have the following
"Data","MAX","MIN","Note"
"07-01-2008 08:00:00", 135, 90, "Eccessi feste, inizio dieta"
"07-01-2008 18:00:00", 135, 85, ""
"08-01-2008 08:00:00", 125, 75, ""
which is a collection of blood pressure data at different time of the day.
I would
2010 Oct 12
2
Linear Regression
? stato filtrato un testo allegato il cui set di caratteri non era
indicato...
Nome: non disponibile
URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20101012/bde30916/attachment.pl>
2006 Nov 10
1
Rpad
I've just compiled and installed Rpad from the sources under *nix
(freeBSD 6.1) and R 2.4.0, and followed the suggested procedure to
setup an Rpad server step by step.
Now when I try to execute whatever
.Rpad example file the IE browser hangs endlessly with a "loading page"
pop-up and the following errors show up at the end of the html page:
2011 Nov 27
2
Transforming a string into a command
I would like to make a string executable, e.g,
s<- "ln(a+b)"
a<-1
b<-2
???? execute string s to obtain ln(a+b) ????
How can I make it?
Ciao fron Rome
Vittorio
2005 Nov 08
1
RODBC fails to build
Context:Pentium 4, FreeBSD 5.4, R 2.2.0
I updated the extra packages I
had downloaded but the upgrading of RODBC failed complaining:
checking
for unistd.h... yes
checking sql.h usability... no
checking sql.h
presence... no
checking for sql.h... no
checking sqlext.h usability...
no
checking sqlext.h presence... no
checking for sqlext.h... no
configure: error: "ODBC headers sql.h and
2006 Apr 07
1
Aggregating an its series
I'm using a very long irregular time-series of air temperature and
relative humidity of this kind (this is an extract only)
its.format("%
Y%d%m %X)
> base
T H
20020601
12.00.00 27.1 47
20020601 15.00.00 29.1 39
20020601 18.00.00 27.4 39
20020601 21.00.00 24.0 40
20020602 0.00.00 22.0 73
20020602 3.00.00
19.2 49
20020602 6.00.00 19.5 74
20020602
2008 Jun 09
1
Problems with strptime
Perhaps I'm missing a real, stupid point but I can't understand the
following behaviour:
> strptime("30 march 2008 02:30 AM",format="%d %B
%Y %I:%M %p")
[1] "2008-03-30 02:30:00"
> strptime("30 march 2008 00:30
AM",format="%d %B %Y %I:%M %p")
[1] NA
Why times 00:nn are not
available and how solve this?
Ciao
Vittorio
2007 May 16
1
Unable to compile "Matrix" package
After upgrading to 2.5.0 under freebsd 6.2 I updated all the add-on packages
in an R session via update.packages(...). R was unable to install
the "Matrix" package because it couldn't find the package.
Therefore I downloaded the *.tar.gz from the CRAN site and issued
R CMD INSTALL Matrix_0.99875-1.tar.gz
but the comilation ended in an error (see the complete attached
2004 Jun 22
2
ts & daily timeseries
I have defined a daily timeseries for the 365 days of 2003 issuing:
myts = ts(dati[,2:10],frequency=365,)
> myts
Time Series:
Start = c(1, 1)
End = c(1, 365)
Frequency = 365
and
mytime = as.POSIXct(strptime(as.character(dati[,1]),format="%Y-%m-%d"))
contains the dates from "2003-01-01" to "2003-12-31"
How can I combine mytime and myts in order to list