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2017 Jun 22
4
Hunting a histogram variant
...it in recent textbooks. So it may be one of those older graphical displays that's just fallen out of use. General questions: i) Does this thing have a name? ii) Can anyone point me to a literature source for it? ... and the R question: ii) Is it already hiding somewhere in an R package?* S Ellison *If it's not, I'll be adding it to one, hence the hunt for due credit/sources ******************************************************************* This email and any attachments are confidential. Any use...{{dropped:8}}
2008 Jan 29
3
Fortunes - was Re: [OT] vernacular names for circular diagrams
I did not write that. On Jan 29, 2008 9:05 AM, S Ellison <S.Ellison at lgc.co.uk> wrote: > >>> "Gabor Grothendieck" <ggrothendieck at gmail.com> 29/01/2008 12:35:27 > >>> > > As is common in human affairs, even > > the illusion of understanding is preferred to a lofty digression > upon...
2012 Dec 05
10
Slight oversight in the type documentation
So I was looking at the type reference, and noticed that for a lot of the types, no namevar was listed. When I checked the types in the code, for each of those omissions, the namevar was simply "name". Now, it might be self evident that this is the case, but a little documentation couldn''t hurt, If not in each type, at least in the section where it describes what namevars
2008 Apr 07
14
A little assistance with Sieve
...this, or am I doing something wrong? 2. I have seen through Googling some dovecot.conf examples that suggest I should be using managesieve instead of lda (or in addition? - it''s not clear), as in protocol managesieve { ... Any advice will be gratefully received. Thank you Cam -- Cam Ellison, PhD RPsych (BC #01417) Cam Ellison & Associates Ltd. 3446 Beach Avenue Roberts Creek BC V0N 2W2 Phone 604.885.4806 Fax 694.885.4809 Cell 604.989.0635
2017 Jul 20
2
Precision of values > 53 bits
> On 10 Jan 2013, at 15:56 , S Ellison <S.Ellison at lgcgroup.com> wrote: > > > >> I am working with large numbers and identified that R looses >> precision for such high numbers. > Yes. R uses standard 32-bit double precision. Well, for large values of 32... such as 64. -- Peter Dalgaard, Professor...
2017 Jun 22
1
Hunting a histogram variant
?stem for something close and built in. Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Wed, Jun 21, 2017 at 9:01 PM, S Ellison <S.Ellison at lgcgroup.com> wrote: > > I'm looking for a histogram variant in which data points are plotted as labelled rectangles 'piled up' to form a histogram. I've posted an example at https://www.dropbox.com/s/ozi8bhdn5kqaufm/labelled_histogram.p...
2010 Feb 02
2
Yield to Maturity using R
Dear R helpers,     Yesterday I had raised following query which was addressed by Mr Ellison. The query and the wonderful solution as provided by Mr. Ellison are as given below.    ## PROBLEM   I am calculating the ''Yield to Maturity'' for the Bond with following characteristics.    Its a $1000 face value, 3 year bond with 10% annual coupon and is priced at 101. The yield...
2010 Feb 01
5
''R'' and ''Yield to Maturity''
Dear R helpers   I am calculating the ''Yield to Maturity'' for the Bond with following characteristics.   Its a $1000 face value, 3 year bond with 10% annual coupon and is priced at 101. The yield to maturity can be calculated after solving the equation -   1010 = [100 / (1+ytm)]  + [100 / (1+ytm)^2] + [ 1100 / (1 + ytm)^3]   This can be solved by trial and error
2012 Dec 17
4
How to make Ordinary Kriging using gstat predict?
Hi, I am new in R and trying to implement an algorithm which makes ordinary kriging by using gstat library and the predict method. I use the predict method as following: First, I create an object g: g <- gstat(id="tec", formula=TEC ~ 1, data=data) ## Create gstat object called g And then I use this object in the predict. p <- predict.gstat(g, model=mod, newdata=predGrid,
2009 Dec 18
2
Getting Rd pages right for redefined S3 generic
...R cmd that it should not look for Rd docs for cbind and cbind.default in my package whilst still having my generic handle dispatch correctly? It looks like one answer _might_ be not to export my redefined cbind - but will a local generic still work properly if it''s not exported? Steve Ellison ******************************************************************* This email and any attachments are confidential. Any use...{{dropped:8}}
2017 Aug 03
1
switch of cex adjustment with mfrow?
...s an aside I didn't immediately find any comment on the effect of argument order in ?par. It just means you have to be careful exactly what you specify. It may also mean that for future-proofing against possible changes in par execution order, you might want to use separate calls anyway. Steve Ellison ******************************************************************* This email and any attachments are confidential. Any use...{{dropped:8}}
2017 Aug 07
1
Latin hypercube sampling from a non-uniform distribution
...ple way is to use the uniform random output of randomLHS as input to the quantile function for your desired distribution(s). For example: q <- randomLHS(1000, 3) colnames(q) <- c("A", "B", "mort") q[, "mort"] <- qpois(q[,"mort"], 1.5) S Ellison ******************************************************************* This email and any attachments are confidential. Any use, copying or disclosure other than by the intended recipient is unauthorised. If you have received this message in error, please notify the sender immediately via +44(...
2017 Jul 25
1
Precision of values > 53 bits
...mpressively zombified thread. Though wondering how 53 bits were supposed to fit into 32 might just warrant revivification. -- Sent from my phone. Please excuse my brevity. On July 20, 2017 5:33:34 AM PDT, peter dalgaard <pdalgd at gmail.com> wrote: > >> On 10 Jan 2013, at 15:56 , S Ellison <S.Ellison at lgcgroup.com> wrote: >> >> >> >>> I am working with large numbers and identified that R looses >>> precision for such high numbers. >> Yes. R uses standard 32-bit double precision. > > >Well, for large values of 32... such a...
2018 Mar 15
1
stats 'dist' euclidean distance calculation
...apply dist() to factors constructed from allele data, you will usually get complete nonsense in genetic terms. You should probably look at something like dist.gene in the ape package: see https://www.rdocumentation.org/packages/ape/versions/5.0/topics/dist.gene S Ellison ******************************************************************* This email and any attachments are confidential. Any use...{{dropped:8}}
2017 Sep 06
1
Interesting behavior of lm() with small, problematic data sets
...th R 3.4.1 on linux, I get coefficients and residuals that are numerically exact, F-statistic = NaN, p-value = NA, R-squared = NaN, etc. All of which is what ought to happen, given that the response variable (y) is not actually variable. ---JRG John R. Gleason On 09/06/2017 09:10 AM, S Ellison wrote: >> I think what you're seeing is >> https://en.wikipedia.org/wiki/Loss_of_significance. > > Almost. > All the results in the OP's summary are reflections of finite precision in the analytically exact solution, leading to residuals smaller than t...
2010 Aug 18
1
Kernel panic on import / interrupted zfs destroy
...for several hours. Can zdb recover from this kind of situation (with a half-destroyed filesystem that panics the kernel on import?) What is the impact of the above zdb operation without aok=1? Is there any likelihood of a recovery of non-affected filesystems? Any suggestions? Regards, Matthew Ellison
2004 Nov 24
6
Route first or NAT?
Hi, I''m trying to use shorewall for a RAS dialup solution We have networks we need to connect to with the same ranges internally (i.e. 2 separate users with a 192.168.0.0/24 range). We connect to these via a pptp tunnel (or isdn) The problem we have is that we need to access these networks all the time, so allocate them a range from our internal range. This will then be NATed to
2013 Oct 21
11
speeding up "sum of squared differences" calculation
All, I am using a sum of squared differences in the objective function of an optimization problem I am doing and I have managed to speed it up using the outer function versus the nested for loops, but my suspicion is that the calculation could be done even quicker. Please see the code below for a simple example. If anyone can point out a faster way I would appreciate it greatly. Thanks, Roger
2012 Oct 12
2
Package install_options
Now that the install_options parameter can be applied to all package providers, does anyone have advice on the best way to specify options to yum? For example, considering the common pattern of leaving a repo disabled most of the time, if I wanted to pass --enablerepo=epel to yum, would I set install_options => [''--enablerepo=epel''] or install_options =>
2013 Mar 14
7
hiera_hash lookups for included classes?
When using "include" to include a class Hiera helpfully performs an autolookup on the parameters of the included class. Specially-named variable names are automatically pulled from the Hiera datastore(s) and passed into the included module. This is pretty awesome. But it looks like included resources _only_ perform a hiera() lookup. If we have a hash defined in several levels of our