Displaying 20 results from an estimated 5000 matches similar to: "How to write a function that accepts unlimited number of input arguments?"
2008 Sep 20
1
lower and upper limits in integrate as vectors
Dear R useRs,
i try to integrate the following function for many values
"integrand" <- function(z)
{
return(z * z)
}
i do this with a for-loop
for(i in 2:4)
{
z <- integrate(integrand, i-1, i)$value
cat("z", z, "\n")
}
to speed up the computation for many values i tried vectors
in integrate to do this.
vec1<-1:3
vec2<-2:4
2009 Apr 16
3
segment between points on different plots
Hi,
I need to draw a line segment between two points on different plots in the
same multigraph.I've tried looking at the zoominplot function in plotrix but
havent understood much.any help is appreciated
~Aks
[[alternative HTML version deleted]]
2009 Jun 25
3
grid.polygon() + color gradient
Hi,
I wonder whether there is a way to generate a polygon (a triangle in
my case) with color gradient using grid.polygon() in package grid?
I tried something like
library(grid)
grid.polygon(x=c(0, 0.5, 1), y=c(0.5, 1, 0.5), gp=gpar(col=NA,
fill=colorRampPalette(c("green", "lightgray"),
space="Lab")(200)))
But am only
2010 Aug 24
3
multiple assignments ?
Simple one, have read and googled, still no luck!
I want to create several empty vectors all of the same length.
I would like multiple empty vectors (vec1, vec2, vec3) and want to create them all in one line.
I've tried
vec1,vec2,vec3 <- vector(length=5)
and
c(vec1,vec2,vec3) <- vector(length=5)
and several other attempts but nothing seems to work ... suggestions?
Thanks
Jim
2013 Jun 18
1
transform 3 numeric vectors empty of 0/1
Dear all,
Without a loop, I would like transform 3 numeric vectors empty of 0/1 of
same length
Vec1 : transform 1 to A and 0 to ""
Vec2 : transform 1 to B and 0 to ""
Vec3 : transform 1 to C and 0 to ""
to obtain only 1 vector Vec who is the paste of the 3 vectors (Ex : ABC,
BC, AC, AB,...)
Any idea ?
Thank you for your help
--
Michel ARNAUD
2012 May 04
1
Equality of multiple vectors
Hello,
I'm writing a piece of code where I need to compare multiple same length
vectors.
I've gone through the basic functions like identical() or all(), but they
only work for comparing 2 vectors. From 3 vectors on, it doesn't work .
Example: Assuming
vec1 <- c (1,2,3,4,5)
vec2 <- c(1,2,3,4,5)
vec3 <- c(1,2,3,4,4)
identical (vec1,vec2,vec3) returns TRUE, since the 2
2012 Nov 08
5
map two names into one
Thanks.
Yes. Your approach can identify:
Glaxy ace S 5830 and
S 5830 Glaxy ace
But you can not identify using same program:
Iphone 4S 16 G
Iphone 4S 16G
How should I solve both in same time.
Kind regards,Tammy
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2004 Jul 09
3
Problem with bwplot
Try factor(vec2) in your bwplot() call.
-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch]On Behalf Of Ernesto Jardim
Sent: Friday, July 09, 2004 9:41 AM
To: Mailing List R
Subject: [R] Problem with bwplot
Hi,
I'm ploting some box-and-whisker plots with bwplot but I'm not getting
any box-and-whiskers ... just dots.
2012 Aug 24
6
updating elements of a vector sequentially - is there a faster way?
I would like to know whether there is a faster way to do the below
operation (updating vec1).
My objective is to update the elements of a vector (vec1), where a
particular element i is dependent on the previous one. I need to do this on
vectors that are 1 million or longer and need to repeat that process
several hundred times. The for loop works but is slow. If there is a faster
way, please let
2007 Feb 01
2
Losing factor levels when moving variables from one context to another
Hi, there
I'm currently trying to figure out how to keep my "factor" levels for a
variable when moving it from one data frame or matrix to another.
Example below:
vec1<-(rep("10",5))
vec2<-(rep("30",5))
vec3<-(rep("80",5))
vecs<-c(vec1, vec2, vec3)
resp<-rnorm(2,15)
dat<-as.data.frame(cbind(resp, vecs))
2011 Oct 01
2
Returning vector of values shared across 3 vectors?
Help-Rs,
I've got three vectors representing participants:
vec1 <- c(4,5,6,7,8,9,10,11,12,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81)
vec2 <- c (1,2,3,4,5,6,7,8,9,10,11,12,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66)
vec3 <- c (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,52)
I'd
1999 Dec 16
2
R question
I have the following question, which is elementary but I am unable to
answer.
In a for(i=10) loop, I am trying to represent the 10 1-dimensional vectors
l1, l2,... l10 by some expression that will run through these values.
ie. soppose I want to add l1 + ... + l10
I could go
x <- 0
for(i in 1:10){ x <- x+ l(i)}
This should return x to be the sum of the 10 li's for i from 1 to 10
2009 May 27
3
Axis label spanning multiple plots
Hello
I need to plot 3 graphs in a single column; the top two plots have the
same title, and I would like it to be written only once, centered
horizontally and spanning the two plots. Something like
t +------------+
| |
i | |
| |
t +------------+
l +------------+
| |
e | |
| |
1 +------------+
t
2008 Nov 09
1
[Rd] Re Bessel functions of complex argument
Dear all,
I'm writing a code that requires Bessel functions with complex argument.
Searching the list, I found the continuation of a thread I initiated a few
months ago:
http://tolstoy.newcastle.edu.au/R/e4/devel/08/03/0746.html
As I understand, the most promising option would be to use the fortran or C
implementation of Amos,
2009 Jul 21
1
legend title in qplot
Hi,
I've used the following command in qplot
qplot(a$V1,geom="histogram",binwidth=0.15,fill =
factor(a$V2),ylab="Frequency",xlab="Rate");
but the title in the legend shows up as factor(a$V2)...how can i change
this?
--
Rajesh.J
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2009 Jul 04
2
Shading the area between lines
Hi,
I have a graph with seven parallel horizontal lines. Is it possible to
shade the area between two adjacent lines?
Thank you in advance,
Hannu
2009 Jul 15
1
Averaging dataframes that are stored in a list
Dear R-helpers,
I have a list containing 5000 elements, each element is a dataframe
containing one ID column (identical over the 5000 dataframes) and 9 numeric
variables, e.g.
ID VAR1 VAR2 VAR3 ... VAR9
I would like to create a new dataframe containing the ID column and the mean
values of the 9 numeric variables. So, the structure of this new dataframe
would be identical to the structure of the
2009 Feb 26
3
Modifying Names from (x,y] into x
Hi,
I have the following data that looks like this:
> names(dat)
[1] "(-2329,-2319]" "(-1399,-1389]" "(-669.4,-659.4]"
How can I modify those names into just this?
[1] -2329 -1399 -669.4
- Gundala Viswanath
Jakarta - Indonesia
2008 Nov 12
1
R code to generate Sweave input ? Sweave squared ?
Dirk,
I came upon your message below in searching for a different Sweave topic.
Have you pursued this? I'm new to R (9 months). Recently have been doing
data analysis in R and have started pondering the same question, but don't
have any ideas yet. I did do something related to this in SAS, the main
purpose of which was to build a standardized file of statistical results to
be
2009 Jul 03
3
Variable names in lattice XY-plot
Hi,
how can I get a more descriptive text
instead of the variable names in my XY-lattice plot,
according to the table below?
Variable text
acet = "Acetylaspartate Thalamus"
chol = "Choline Thalamus"
acetp = "Acetylaspartate parieoc"
ino = "Inositole Thalamus"
I could not find a solution.
Please have a look at my syntax.
Thanks a lot,