Hi,
tryCatch seems to be evaluating the all expressions wrapped in it before
passing control to the error handling function. For example, the code below
will try to evaluate "results" even though the call to odbcConnect fails. I
was hoping that the mechanism would work in the same way as a C+
If anyone's interested, I got round it by doing:
tryCatch(lm(data~model,na.action=na.fail),error=function(err){NA})
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Neil Beddoe
Sent: 23 January 2009 15:40
To: 'Prof Br
Neil Beddoe
Cc: r-help@r-project.org
Subject: Re: [R] Returning NA from lm
See ?na.exclude
On Fri, 23 Jan 2009, Neil Beddoe wrote:
> Hi.
>
> I need to apply run a regression analysis for groups of data of fixed
> length:100 As, 100 Bs, 100 Cs etc.
>
> eg
>
> x
&g
Hi.
I need to apply run a regression analysis for groups of data of fixed
length:100 As, 100 Bs, 100 Cs etc.
eg
x
Key Value
A 1
A 21.2
A 4
A 6.5
...repeat 96 times with differing values of A
B 1
B 2.3
B NA
B 6.5
...repeat 96 times with differi
You can also use subscripts to get at things with a bit of playing around.
> summary(lm(x~seq(1,length(x),1)))
Call:
lm(formula = x ~ seq(1, length(x), 1))
Residuals:
Min 1Q Median 3Q Max
-40.0961 -15.5289 -0.6489 12.7488 41.0107
Coefficients:
Hi,
I'm trying to create a time series that will work with ohlcPlot:
mts<-ts(data=c(results$OpenPrice,results$HighPrice,results$LowPrice,
results$ClosePrice),c="mts",names=c("Open", "High", "Low","Close"))
ohlcPlot(mts) fails with: Error in if ((!is.mts(x)) || (colnames(x)[1] !=
"Open") || (co
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