Hi all,
Just a minor issue that I am not sure whether this is considered a
"bug." It is about the help page.
In the help page of printCoefmat(), for the argument 'eps.Pvalue', the
description is as below:
number, ..
I have to read the source to figure out that this argument is to be
used by
bquote),
> see Section 6: "Computing on the Language" in the R Language
> Definition manual. Actually, if you are interested in a concise
> (albeit dense) overview of the R Language, you might consider going
> through the whole manual.
>
> Cheers,
> Bert
>
> On
an try either of these:
>
> expr <- bquote(lm(.(as.formula(mod)), dat))
> lm_out5 <- eval(expr)
>
> expr <- call("lm", as.formula(mod), as.symbol("dat"))
> lm_out6 <- eval(expr)
>
> but bquote is usually easier and good enough.
>
> On W
Sorry for a typo, regarding the first attempt, lm_out2, using
do.call(), I meant:
'It does have the formula, "as a formula": y ~ x1 + x2.
However, the name "dat" is evaluated. ...'
Regards,
Shu Fai
On Wed, Oct 25, 2023 at 5:09 PM Shu Fai Cheung wrote:
>
> Hi All,
>
Hi All,
I have a problem that may have a simple solution, but I am not
familiar with creating calls manually.
This is example calling lm()
``` r
set.seed(1234)
n <- 10
dat <- data.frame(x1 = rnorm(n),
x2 = rnorm(n),
y = rnorm(n))
lm_out <- lm(y ~ x1 + x2,
ul
>
> On 16/10/23 05:24, Duncan Murdoch wrote:
> > On 15/10/2023 12:05 p.m., Shu Fai Cheung wrote:
> > > Let me clarify my question:
> > >
> > > plot.new()
> > > polygon(c(.5, .5, .75, .8), c(.25, .3, .4, .5))
> > >
> > > If
Thanks a lot for introducing these functions! I am not aware of them
but it seems that they can help me to do what I want to do.
Regards,
Shu Fai
Regards,
Shu Fai Cheung (張樹輝)
On Mon, Oct 16, 2023 at 12:24 AM Duncan Murdoch
wrote:
>
> On 15/10/2023 12:05 p.m., Shu Fai Cheung wrote:
>
in
this area.
If the device is an image file, then I can check the color of a pixel. I
would like to know whether I can do the same with an on-screen device.
Thanks.
Regards,
Shu Fai
On Sun, Oct 15, 2023 at 11:44 PM Shu Fai Cheung
wrote:
> Sorry that I did not make my question clear eno
t;
> Note that the type of device in your example is system-dependent. The
> content in a png() would be different than the content in a win.graph()
> device.
>
> On October 15, 2023 8:04:00 AM PDT, Shu Fai Cheung <
> shufai.che...@gmail.com> wrote:
> >Hi All,
> &g
Hi All,
I want to inspect the content of a plot generated by another function.
For example:
plot.new()
polygon(c(.5, .5, .75, .8), c(.25, .3, .4, .5))
A polygon will be drawn. If I do not know what has been done to generate
the plot, is it possible to query the content in the active device?
Hi All,
There is a thread about the use of save(), load(), saveRDS(), and
loadRDS(). It led me to think about a question regarding them.
In my personal work, I prefer using saveRDS() and loadRDS() as I don't like
the risk of overwriting anything in the global environment. I also like the
freedom
Hi,
You can try this:
head(irisdata)
Objects loaded by load() keep their names when being saved. In your
case, it is 'irisdata'.
You can also use verbose = TRUE to show the names of objects loaded:
load(file = "irisdataTest.RData", verbose = TRUE)
Hope this helps.
Regards,
Shu Fai
On Tue,
ciativity of floating point arithmetic.
> This article gives a way to make results repeatable:
>
> https://www.intel.com/content/www/us/en/developer/articles/technical/introduction-to-the-conditional-numerical-reproducibility-cnr.html
>
> -Bill
>
> On Wed, Aug 16, 2023 at 8:
on (and method="svd" give the
> same values). With method="chol" I get different values, but again
> consistent across machines.
>
> Ah, mvtnorm::rmvnorm() applies the results from eigen() in a different
> way that appears to be less (not?) affected by the indetermi
Hi All,
When addressing an error in one of my packages in the CRAN check at CRAN,
I found something strange which, I believe, is unrelated to my package.
I am not sure whether it is a bug or a known issue. Therefore, I would like
to have advice from experts here.
The error at CRAN check occurred
**
#> ---
#> Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
```
I have to round the two columns first before calling
printCoefmat(). Not nice but works for now.
Regards,
Shu Fai Cheung
在 2023年7月8日週六 00:41，Martin Maechler 寫道：
> >>>>> Martin Maechler
> &
***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
```
However, this solution is not ideal because the numbers
of decimal places of "Estimate" and "Std. Error" are
different. How can I get the output like this one?
```r
#> Estimate Std. Error t value Pr(>|t|)
#>
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