Displaying 20 results from an estimated 20000 matches similar to: "Points on Map"
2011 Apr 05
1
Grid on Map
I am new to R.I want to draw grid from a csv file which contains latitude
minimum ,latitude maximum ,longitude minimum ,longitude maximum.The grid
should be divided into exactly 4 quadrants. The map is of NY state of USA. I
want to know how can I do it.
Help would be appreciated.
Thanks
Jaimin
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2011 Mar 24
2
Using C code in R
Hi,
I am new to R and I want to know how to use C code which contains two
functions one called inside another.I know that how to use C code in R if it
has only one function but dont know how to do it in above case. I want to
use the same in R .My C code is as follows.
//#include <R.h>
void sayHello();
void g();
void sayhello() {
Rprintf("Hello world %d\n",global);
}
void
2011 Feb 20
1
QuadTree
Could any one tell me how to implement QuadTree in R?
Or are there any packages avaialble to implement it in R.
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2011 Jun 12
1
Pointers in R
Hello Everyone,
I am new to R and would like to create a quad tree in R. However the problem
is that I don't think R has pointers. Is there any way to create a tree in
R?
Thanks
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2011 Jun 18
1
Pass Vector from R to C
Hi ,
I have a function which passes a vector from R to C. However the size of the
vector is decided inside the c program. But as I have to pass the size while
calling the function from R lot of my space is getting wasted. Is there any
other alternative?
I call c function as :
2011 Apr 23
1
Pass String from R to C
Hi,
I am using a function which accepts the string from R and prints it.
But when I am calling .C("main","hello");
it is printing any random thing.
My C function is
void main(char *str)
{
Rprintf("%s",str);
}
Can you help how to achieve this using .C interface?
Thanks
Jaimin
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2010 Jul 30
1
how to find non-ASCII characters in .Rd files?
[Env: Win XP Pro / R 2.11.1]
I keep occasionally running into the annoying problem of getting
warnings from R CMD check regarding
non ASCII characters in .Rd files, without any easy way of finding them.
Mostly these come from copy/paste of references or other material from
web pages or Win applications,
and often involve varieties of quote-like characters, e.g., if I try to
include output
2011 Sep 09
2
Manhattan Plot
To whom it may concern:
My name is Jillian Weinfeld. I am currently and undergraduate student at New York University and working at Mount Sinai School of Medicine doing research with epilepsy patients.
At the moment I am creating a manhattan plot with my data set. After reading many forums and such, I have appropriately plotted my data, however, I wanted to see how I can change the colors of the
2009 Sep 30
3
A point in a vector?
Dear list,
I have a strange requirement .... I have a vector, for example v<-
c(0,0,0,0,1,2,4,6,8,8,8,8). I have a value,for example x<- 4.8.
I would like to understand in which sub interval of v is x. In this case, v
would be in the sub interval [4,6] that is in the subinterval starting from
element j=7 to the element j+1=8.
Can we do that with an R command?
Regards
--
Corrado Topi
2005 Oct 08
3
square and points on the same figure
Hi,
I have the following code to
randomly generate the
points:
csr <-function(n=60){
x=runif(n)
y=runif(n)
f=cbind(x,y)
}
plot(csr())
I wonder how to code to draw a square centering on 0.5,0.5; with the length of each side to be 0.3 on the same figure with these plotted points?
Thanks,
Sam
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2011 Apr 29
2
Summer student internship placement at University of York / YCCSA / SEI (paid)
Dear R-lings,
I did not know which list to post to, because it is a studentship so not
really a job, so it did not fit the r-sig-jobs list .... and it is about
devloping an extension package interfaced with R .... I hope I did not upset
anyone. If so apologies.
The Centre For Complex systems Analysis at the University of York (YCCSA) in
UK in collaboration with Stockholm Environment
2012 Aug 10
2
Regular Expressions + Matrices
Hi all,
My code looks like the following:
inname = read.csv("ID_error_checker.csv", as.is=TRUE)
outname = read.csv("output.csv", as.is=TRUE)
#My algorithm is the following:
#for line in inname
#if first string up to whitespace in row in inname$name = first string up
to whitespace in row + 1 in inname$name
#AND ID in inname$ID for the top row NOT EQUAL ID in inname$ID for the
2012 May 22
1
Naming dimnames in an array using the results of an expression
dear all
i'm struggling with naming in an array
diag.data is one of a series of 2x2 diagnostic testing arrays, with
'Outcome' columns (true/false) and 'Test' rows (High-risk, Low-risk),
drawn from a larger list object of 'results'
i can hard-code the names of the array using dimnames;
diag.data<-array(c(19,2,125,50),c(2,2)) #example to run - actually comes
out
2005 Jul 15
3
Dividing a vector into ntiles
R 2.1.1
Win 2k
Would someone suggest a method (or methods) that can be used to
determine ntile cutpoints of a vector, i.e. to determine values that can
be used to divide a vector into thirds such as 0-33 centile, 34-66
centile, 67-100 centile. If for example I had a vector:
1,2,3,4,5,6,7,8,9
and wanted to divide the vector into thirds
I would have cut-points of 3, and 6.
Thanks,
John
John
2010 Feb 10
3
How to repeat the names?
Dear R helpers
I have a city.csv file as given below.
'city.csv'
city_name1 city_name2
New York City Buffallo
So I define
city_name = read.csv('city.csv')
city1 = city_name$city_name1
city2 = city_name$city_name2
My problem is how do I repeat the names one after other say 10 times i.e. my output should be like
New York
City Buffallo
New York
City
2006 Apr 24
3
the 'copula' package
Is anybody using the Copula package in R? The particular problem I'm
facing is that R is not acknowledging the fitCopula command/function
when I load the package and (try to) run something very simple:
fit1 <- fitCopula(x1 = list(u11,u12,u13,u14,u15,u16,u17,u18), tCopula,
optim.control = list(NULL), method = "BFGS")
Anybody also using it, successfully or unsuccessfully?
2010 Oct 06
2
Pointing to a specific place on the x-axis with an arrow
Hi all,
I am trying to do something simple, but which is deviling me. I want to add an
up-arrow to the x-axis, pointing to a specific location on the axis. I want the
arrow to be as large as possible.
Here is where I'm at with my code:
#this part if from the ?plot example:
require(stats)
plot(cars)
lines(lowess(cars))
#I am trying to use mtext to add the arrow... but I don't know how
2006 Oct 20
6
summing elements in a list of functions
Dear all,
I have looked for an answer for a couple of days, but can't come with any
solution.
I have a set of functions, say:
> t0 <- function(x) {1}
> t1 <- function(x) {x}
> t2 <- function(x) {x^2}
> t3 <- function(x) {x^3}
I would like to find a way to add up the previous 4 functions and obtain a new
function:
> rrr <- function(x) {1+x+x^2+x^3}
without,
2008 Feb 18
2
Custom Plot - means, SD & 5th-95th% (Plotmeans or Boxplot)?
Any help with this problem would be greatly appreciated:
I need to produce a custom plot i haven't come across in R. Basically, I
want to show means, 1st standard deviation and 5th and 95th percentiles
visually, using something resembling a boxplot. Is it possible to completely
customize a boxplot so that it shows means as the bar (instead of, not as
well as medians), standard deviations at
2012 Sep 12
1
Plotting US States: Issue with filled colors cycling
I'm having issues when trying to do a filled State plot using the maps()
package. It seems that the color values aren't being plotted correctly,
and I'm not sure why...
I've started debugging it, but I'm stuck. I've attached the code that I've
got so far. The for loop plots states 1:i. What I'm noticing is that the
colors are correct until after Michigan gets