Displaying 20 results from an estimated 600 matches similar to: "HELP: how to add weight to a [x,y] coordinate"
2008 Aug 25
1
"rval, symbol print name too long"?
Is there anyone who can tell me what this means (I call a table, that is stores as csv file): Error in do.call("data.frame", rval) : symbol print-name too long Thanks you in advance,Akko Eleveld
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2008 Aug 22
1
dimension values of an array
Question:
I created an array with 164 columns and 70 rows.
I would like every column to have unit value 1
and the rows 0.1, 0.2, 0.3 up to 7. How can I define that?
Thanks for your help!
Good weekend!
Akko
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2008 Aug 18
1
Please help: Limit single row calculation
Is there anyone who can help me with the following? It's hard to describe in a few words, but hope you'll understand.
I attempt to model refugee mortality over time using Monte Carlo. Before doing repetitive simulations, my function should go through only one survey/row at the time, but instead gives outcomes of all studies/rows, which is not correct, because it uses random numbers
2006 Jun 13
1
bubbleplot for matrix
Hi all,
I would like to ask if it is possible to use bubbleplot for a 20x20
matrix, instead of a dataframe with factors in columns.
The idea would be to get a tabular representation with bubbles like in
Rnews_2006_2 article, which look very nice.
Thanks in advance,
Albert.
2008 Sep 13
4
bubble(circle) plot help.
I need help creating a bubbleplot, like a simple pseudo three dimensional scatterplot of circles whose sizes index a 3rd variable. I initially came across this at http://addictedtor.free.fr/graphiques/graphcode.php?graph=73 but the circleplot function does not exist in fbasic as listed in the document.
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2007 Aug 24
7
How to size an email server to handle 5 million emails per day
I have no idea as to how to size an email server. I was approached by
a customer that wanted a single server with RAID 1 disks to handle
about 5 million emails a day.
In general terms, what parameters should I take into account to size
the hardware specs when the average email is about 10kb, the smalles
email is 2kb and the largest email is about 5meg (with attachment)
thanks,
--
2008 Jul 01
2
"Invalid object" error in boxplot
Hi,
I'm trying to make a boxplot with the data at the end of the message, and when I
try to execute the command
>boxplot(Diatoms) (or for any other field instead of "Diatoms")
I get the following error message:
Error in oldClass(stats) <- cl : adding class "factor" to an invalid object
Any advice would be much appreciated.
Thanks a lot,
Miriam
Date
2008 Aug 16
0
use of all row elements
Good day,
A function is used on a database with 50 rows and 200 collumns. every row is 1 seperate study that the function should run through. Desired outcome are [x,y] and a weight for that coordinate.
I have problems with generating x.
## Generating random time or x coordinate (through random time of displacement - random recall)
## First generating random time within recall period
2008 Aug 19
0
R-code: for those who like a challenge; HELP
I'll try to be more clear, but will have to give much more info. Here we go....
As part of my Masters in Public Health I writing a dissertation reviewing the mortality trend of internally displaced persons in camp settings in Sub Saharan Africa. I have 50 surveys with
- crude mortality rate (cmr), CMR lower confidence interval(cmrlci), CMR upper confidence interval(cmruci),
- recall period
2012 Jun 27
4
formula version of sunflowerplot() fails when axis label specified
Hello, R-help,
does anybody have already a work-around for the problem that the formula
version of sunflowerplot() throws an error when provided with a value for
xlab (or ylab) different from NULL:
> sunflowerplot( Sepal.Length ~ Sepal.Width, data = iris, xlab = "A")
Error in model.frame.default(formula = Sepal.Length ~ Sepal.Width, data = iris, :
variable lengths differ
2007 Aug 14
2
Using sunflowerplot to add points in a xyplot panel
Hi,
I use panel.points to add points to a xyplot graphic. But I like to use the
sunflowerplot to plot my points because this is very superimposed. It is
possible to use this? I try but it dont work directly. It may be need to put
this function inside a panel.???
Thanks
Ronaldo
--
Where there's a will, there's a relative.
--
> Prof. Ronaldo Reis J?nior
| .''`.
2017 Jul 16
3
label sunflower point
Hi,
I create a plot using sunflowerplot, I need to highlight one point to show
its importance. What suggestion you have to accomplish this?
Thanks,
Aden
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2010 Sep 06
3
likelyhood maximization problem with polr
Dear community,
I am currently trying to fit an ordinal logistic regression model with the
polr function. I often get the same error message :
"attempt to find suitable starting values failed", for example with :
require(MASS)
data(iris)
polr(Species~Sepal.Length+Sepal.Width+Petal.Length+Petal.Width,iris)
(I know the response variable Species should be nominal but I do as levels
2003 Jan 03
4
number plot symbol in scatterplot?
If I make a scatterplot and several (e.g. 5) points lie on top of each other
at a given x,y location I would like the plot symbol to be the number of
superimposed points (e.g. "5"). Could someone please tell me how to do this
in R? Thanks!
Bill Simpson
2012 Jul 20
1
fitting Ornstein-Uhlenbeck process by MAXIMUM LIKELYHOOD
Dear friends
i am trying to fit an Ornstein-Uhlenbeck process by MAXIMUM LIKELYHOOD
method.
i found these formulas on
http://www.sitmo.com/article/calibrating-the-ornstein-uhlenbeck-model/
this is the mean-reverting process
http://r.789695.n4.nabble.com/file/n4637271/process.txt process.txt
and this is the script that i am using.......
ouFit.ML=function(spread) {
n=length(spread)
2008 Feb 29
2
How to convert the "user coordinate system" in R graph to "normal coordinate system" whose origin is the upper-left cornner of the drawing area?
Dear friends,
The user coordiante system in the R graphics is easy to understand as
it simply corresponds to the range of values on the axes of the plot.
However, sometimes, we want to kown the coordinates of a region in other
system, e.g., the normal coordinate system whose origin is the the
upper-left cornner of the drawing area which is used to set the hot regions
in the HTML image maps.
2012 Nov 22
1
Optimizing nested function with nlminb()
I am trying to optimize custom likelyhood with nlminb()
Arguments h and f are meant to be fixed.
example.R:
compute.hyper.log.likelyhood <- function(a, h, f) {
a1 <- a[1]
a2 <- a[2]
l <- 0.0
for (j in 1:length(f)) {
l <- l + lbeta(a1 + f[j], a2 + h - f[j]) - lbeta(a1, a2)
}
return(l)
}
compute.optimal.hyper.params <- function(start, limits, h_, f_) {
result
2006 Nov 24
1
Sunflower plot error; how to deal with NA
I suspect the problem stems from the fact that there are a couple of NA
values.
> sunflowerplot(lastoto,maxear)
Error in rep.int(i.multi, number[number > 1]) :
invalid number of copies in rep.int()
So I used the subset command to get rid of the cases with NA
hell<-subset(ChinOtoMayB,is.na(lastoto)==FALSE)
Then it worked perfectly
sunflowerplot(hell$lastoto,hell$maxear)
Is
2004 Feb 20
3
problem with abline for x.y
I'm trying to do a sunflowerplot of Galton's data, with both regression
lines and data ellipses,
and I must be doing something wrong, because the lines do not intersect
at \bar{x}, \bar{y}.
The problem is likely in the line for x.y, but I don't know how to
specify that correctly.
The data is read in grouped form( galton), and then ungrouped (galton2):
galton <-
2007 Jul 15
0
How to get coordinate from a google map and put the lat/long into a form?
Hi all,
Just like the one from http://www.43places.com/, users can click on
the google map and save the location to the database.
the examples google gives are about how to display, it seem not to
cover what i want.
does anyone have some example or know some tutorial to help me do
this?
thank you.
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