Displaying 15 results from an estimated 15 matches for "base10".
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2012 Jun 22
2
Boxplot with Log10 and base-exponent axis
...nif(100, min=0, max=100000)
# create plot
par(mfrow = c(1,3))
#plotting in the left side
boxplot(x, xlab="Linear values")
#plotting in the centre
boxplot(x, log = "y", xlab="y axis logged")
# creating log10 values and plotting on the right side
Log.base10.x<-log10(x)
boxplot(Log.base10.x, xlab="LOG10 of data")
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2015 Jul 27
4
Como modificar valores en un data frame
Estimad en s, querĂa realizar una consulta
Dado un data frame llamado aves, como puedo sustiuir las variables area,
dist y distm por sus logaritmos en base10 y volver a crear un data frame?
Muchas gracias
Saludos
Susana
[[alternative HTML version deleted]]
2008 Jun 21
2
Generating groupings of ordered observations
Dear List,
I have a problem I'm finding it difficult to make headway with.
Say I have 6 ordered observations, and I want to find all combinations
of splitting these 6 ordered observations in g groups, where g = 1, ...,
6. Groups can only be formed by adjacent observations, so observations 1
and 4 can't be in a group on their own, only if 1,2,3&4 are all in the
group.
For example,
2015 Aug 31
0
[OT] GNU bc base conversion
...nd did test) definitions for other conversions (though I didn't
post them), but this one also drives it home.
~]$ grep bin_to_hex ~/.bcrc
define bin_to_hex(b) { obase=16; ibase=2; return b; }
~]$ echo "bin_to_hex(10101011)" | bc
9A2113
# so we're sending in a string with implied base10 ... sure enough matches
what BC errantly decided to do
~]$ echo "obase=16; 10101011" | bc
9A2113
~]$ echo "obase=16; ibase=2; 10101011" | bc
AB
>
> Yes, and it?s a serious design mistake in bc, IMHO. No other programmable
> system I?ve ever used changes how numbers...
2015 Aug 31
0
[OT] GNU bc base conversion
...e your way back to sanity.
>
Not sure how this helps me with my most recent example of bin_to_hex where
the ibase within the define clause wasn't honored.
Working with bc interfactively or by piping produce the desired/correct
values.
Testing indicates the ibase is defaulted or overrode as base10 despite what
is specified in the define clause. :-(
>
> My objection is that this is even necessary in the first place.
Agreed.
--
---~~.~~---
Mike
// SilverTip257 //
2015 Aug 31
0
[OT] GNU bc base conversion
...obase=16 /* means 16-base-10 here */
> ibase=2 /* no possibility of confusion */
> 10101011
>
> Result: AB, as expected.
>
Thank you.
We're in agreement, your solution _does_ work when piped or interactively.
Any order does not work from a definition stanza since base10 is
(apparently) not capable of being overrode with definitions.
tmp]$ grep bin_to_hex ~/.bcrc
#define bin_to_hex(b) { obase=16; ibase=2; return b; }
define bin_to_hex(b) { ibase=A; obase=A; obase=16; ibase=2; return b; }
tmp]$ echo "bin_to_hex(10101011)" | bc
9A2113
tmp]$ echo "iba...
2002 Aug 28
0
base conversion, digit interweaving
...and digit
interweaving
(as in x=135, y=246, interwoven=123456) which are ok for a small number
of
conversions or weaves, but, to be able to handle a large number of
conversions
or weaves, I'm hoping that some faster code already exists (ideally
calling C
or FORTRAN). Any suggestions for going base10 to base2, base2 to base4,
or
digit interweaving would be appreciated.
regards,
Richard Remington
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r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or...
2007 Feb 18
0
Lattice graphics: minor tick marks and panel.axis() question(s)
...sage. I would
appreciate any help if these issues are intuitively obvious to an
experienced Lattice user. Thank you very much in advance!
Stephen Tucker [using Windows XP and R 2.4.0]
######### Example code #########
#+++++ Define example data +++++
# x = 0.1 to 10 uniformly spaced in lognormal(base10) scale
# y = log10(x) + random noise
# this is repeated for four groups: a,b,c,d
xpoints = c(rep(1:9,times=2)*10^rep(c(-1,0),each=9),10)
df = data.frame(x=rep(xpoints,times=4),
y = rep(log10(xpoints),times=4)+rep(rnorm(length(xpoints),0,0.2),times=4),
g = rep(rep(letters[1:4],each=length(xpoint...
2002 Sep 12
0
''resource or device no longer available' error with large files
...o image across.
That is when smbd crashes (about halfway/300M), and
win gives the error 'cannot copy or replace
<filename>: the resource or device is no longer
available. That is the exact error everytime (from
memory).
I have tried different files, a different win98se box,
a different base10 hub, and a different network card
on the linux box (via-rhine as opposed to natsemi),
because someone else using natsemi reported a similar
problem on a newsgroup.
I can ftp the file either way just fine every time and
it uses less CPU. I do have debug level set to 10
though (i turned it up only...
2010 Jan 11
0
Exponential regression
...lain; format=flowed; charset="iso-8859-1";
reply-type=original
Chris,
I haven't seen anyone post a reply yet so thought I'd
throw in my thoughts. I'm no R expert!
When you talk about an exponential trend line are you
refering to:
1) y=ax^b
or
2) y=ae^(bx)
If 1) then take base10 logs of y and x and then fit them
with simple linear regression. Then calculate the antilog
of the residulas and plot these as your trendline.
If 2) then take natural logs of y and x and follow the rest
of the procedure described in 1).
Hope this helps.
Murray M Cooper, Ph.D.
Richland Statistics...
2015 Aug 31
2
[OT] GNU bc base conversion
On Aug 31, 2015, at 6:55 AM, Mike - st257 <silvertip257 at gmail.com> wrote:
>
> I suppose my only options for this are to use shell functions or write a
> script using a language that handles things properly (sanely?).
No, there?s a fairly common hack around this problem: ibase=A and obase=A *always* means ?base 10? regardless of the current base, due to a quirk in the way values
2010 Jan 08
2
R exponential regression
Hi all,
I have a dataset which consists of 2 columns. I'd like to plot them on a x-y
scatter plot and fit an exponential trendline. I'd like R to determine the
equation for the trendline and display it on the graph.
Since I am new to R (and statistics), any advice on how to achieve this will
be greatly appreciated.
Many thanks,
Chris
--
View this message in context:
2015 Aug 28
3
[OT] GNU bc base conversion
On Aug 28, 2015, at 9:50 AM, Gordon Messmer <gordon.messmer at gmail.com> wrote:
>
> On 08/28/2015 07:15 AM, Mike - st257 wrote:
>> Thoughts as to why my BC functions aren't properly converting between bases?
>>
>> Decimal to binary or hex works fine, but not binary or hex to decimal and
>> so forth.
>
> I'm not an expert in bc, so I might be
2015 Aug 31
2
[OT] GNU bc base conversion
On Aug 31, 2015, at 10:05 AM, Mike - st257 <silvertip257 at gmail.com> wrote:
>
> On Mon, Aug 31, 2015 at 11:15 AM, Warren Young <wyml at etr-usa.com> wrote:
>
>> ibase=A and obase=A
>
> Not sure how this helps me with my most recent example of bin_to_hex where
> the ibase within the define clause wasn't honored.
That?s because your bin_to_hex function
2008 Oct 24
4
gfortran optimization problems
Colleagues,
I have a routine in package labdsv that calls a FORTRAN subroutine.
Recently, I was informed that it sometimes gives different results on a
PC and Mac, and that the PC version is clearly wrong. I tested it on
linux (because I don't have a PC), and I get the same (incorrect)
behavior as the PC.
Simply by inserting debug WRITE statements in the FORTRAN I would get
different,