Displaying 20 results from an estimated 500 matches similar to: "Bezier curve in R?"
2010 Apr 08
1
how to manipulate object in specific environment?
Hi
I want to simplify my problem into a prototype, how to write a function to
get all the object in your current environment, e.g. .GlobalEnv, and print
their mode?
For example, if I have object a,b,c... in my environment,
a=1;b='test';c=matrix(0,3,3).....
I want to write a function myfun(), when I run myfun(), this retrieve all
the objects in my environment automatically and print
2012 Jan 21
3
semi-transparency not supported in devel R? "alpha" cannot be specified in qplot()
Hi dear all,
In my laptop(ubuntu 11.10 64bit), I maintained a released R (2.14) and a
developmental R, I can specify qplot(..., alpha = ) in R 2.14 , but when I
try to use transparency in developmental R, I got a warning message and the
plot is clearly not I want.
minimal example:
> qplot(data = mtcars, x = mpg, y = cyl, alpha = cyl)
Warning message:
In grid.Call.graphics(L_points, x$x, x$y,
2012 Jan 21
3
semi-transparency not supported in devel R? "alpha" cannot be specified in qplot()
Hi dear all,
In my laptop(ubuntu 11.10 64bit), I maintained a released R (2.14) and a
developmental R, I can specify qplot(..., alpha = ) in R 2.14 , but when I
try to use transparency in developmental R, I got a warning message and the
plot is clearly not I want.
minimal example:
> qplot(data = mtcars, x = mpg, y = cyl, alpha = cyl)
Warning message:
In grid.Call.graphics(L_points, x$x, x$y,
2010 Apr 27
2
R for ubuntu 10.04?
Hi dear all
I am currently using Ubuntu 9.10 (karmic) and R 2.10, I can find a R release
that support "karmic" in cran under ubuntu directory, I plan to update my
laptop to Ubuntu 10.04 after April 30, since I have to use some new features
or new version in it, e.g. QT 4.6, I don't know if there is going to be a R
release that will support this newly released Ubuntu?
Thanks in
2010 Apr 27
1
R for Ubuntu 10.04?
Hi dear all
I am currently using Ubuntu 9.10 (karmic) and R 2.10, I can find a R release
that support "karmic" in cran under ubuntu directory, I plan to update my
laptop to Ubuntu 10.04 after April 30, since I have to use some new features
or new version in it, e.g. QT 4.6, I don't know if there is going to be a R
release that will support this newly released Ubuntu?
Thanks
Best
2011 Jun 08
1
Reference Class error message: may be caused by lazy evaluation?
Dear All,
I came across an error message recently when constructing a reference class,
an example is attached below, it looks like only if I call a specific method
in advance, otherwise it cannot be found in defined method without using
.self, this make it difficulty that sometimes in my initialize method, I
need to call other method defined in the same reference class, the
workaround for this is
2012 Jan 15
1
ggExtra package installation fails
Hi dear all,
I cannot find ggExtra source code or install it by
install.packages("ggExtra", repos="http://R-Forge.R-project.org")
I am really interested in one of the functions inside called "align.plots",
but cannot find the package on-line.
Do I miss something? or is there any function similar to that I can easily
align multiple plots on the same x-axis on one
2012 Apr 25
0
FW: [BioC] Overlay Gene Expression on SNP (copy number) data
Dear All,
Thank you kindly for such detailed replies. I was looking to overlay data using algorithms so that i am able to tell which genes are differentially expressed due to changes in copy number. I did a pubmed search and found only 7 literature pieces all of which use in-house algorithms. I am yet to explore Gviz since it wouldn't work on R 2.14, would try it after upgrading to R 2.15.
2010 Oct 17
0
make error for R 2.13.0
Hi dear all
It's the first time for me to install a developmental version of R, I came
across following errors, my system is
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=10.04
DISTRIB_CODENAME=lucid
DISTRIB_DESCRIPTION="Ubuntu 10.04.1 LTS"
I downloaded the dev version of R in cran R source, and downloaded the
recommended packages by using wget as described in R manual, and run
2010 Apr 29
2
by funtion
Hello,
I have a data.frame:
name col1 col2 col3 col4
AA 23 54 0.999 0.78
BB 123 5 1 0.99
AA 203 98 0.79 0.99
I want to get mean value data.frame in terms of name:
name col1 col2 col3 col4
AA 113.0000 76.0000 0.8945 0.8850
BB 123.00 5.00 1.00 0.99
I tried to use by function:
>aa<-by(test[,2:5], feature, mean)
2010 May 04
1
installing a package in linux
I recently started using ubuntu 9.10 and I am using gedit editor and R
plugin for writing R code. To install any package I need to do:
$ install.packages()
//window pop-up for mirror selection
//then another window pop up for package selection.
After this as long as I am not exiting, the function of the newly installed
packages are available.
After I exit (i use to put 'no' in 'save
2008 Oct 10
1
how to evaluate a cubic Bezier curve (B-spline?) given the four control points
I'm trying to use R to determine the quality of a cubic Bezier curve
approximation of an elliptical arc. I know the four control points
and I want to compute (x,y) coordinates of many points on the curve.
I can't find anything in either the base distribution or CRAN that
does this; all the spline-related packages seem to be about *fitting*
piecewise Bezier curves to a data set.
2007 Apr 26
1
[PATCH]Make wobbly's bezier patch to work with grids that aren't 4x4.
Hi,
Recently, I started taking a look at wobbly's source (I was interested
in it's physics... ;-))
I noticed that GRID_WIDTH and GRID_HEIGHT were defined to be 4, and I
wanted to see how the physics look like with grid sizes that aren't
4x4.
I changed the defines to my new grid size, but unfortunately it didn't work.
I investigated this "bug" (it's not exactly a bug
2010 Apr 19
2
Select single column, preserve name?
Hi, list-
?? I've got a large list of multi-column data and I'd like to filter
it according to a threshold, such as, "show me the values that are
above 0.4 for each line."
For instance, if the line of data were:
> line
v1 v2 v3 v4 v5 v6 v7 v8 v9
1 -0.32 0.66 -0.35 -0.82 0.38 0.66 -0.02 -0.11 -0.64
I can do this
> line[,line >= 0.4]
2010 Apr 29
1
How to extract data table
I'm a very new user of R,
The problem I got is when I have lots of data table, 3 columns and 100 rows
assigned to a variable x.
how can I transform the table into a external file excel or other files
without losing any information. So that make the data look nicer.
--
View this message in context: http://r.789695.n4.nabble.com/How-to-extract-data-table-tp2075750p2075750.html
Sent from the R
2010 Apr 12
4
R GUI
I am really new with R Graphical user interfacefunctions. I am developing a
software package to calculate pKa (biochemistry) but I want to make it look
aesthetically pleasing and make it user friendly. I have heard that R has
some GUI (Graphical user interface) and you can do some really cool stuff
out there. What are the limitations and what are some resources for help. I
have found a couple of
2012 Apr 23
2
Overlay Gene Expression on SNP (copy number) data
Hello,
Can anyone please suggest any packages in R that can be used to overlay gene expression data on SNP (affymetrix) copy number ?
Thanks,
Ekta
Senior Research Associate
Bioinformatics Department
Jubilant Biosys Pvt Ltd,
#96, Industrial Suburb, 2nd Stage
Yeshwantpur, Bangalore 560 022
Ph No : +91-80-66628346
The information contained in this electronic message and in any attachments to this
2006 Dec 11
1
hermite and Bezier splines
Does anyone know how to do hermite or
Bezier splines in R? I can find Matlab routines, but really need to
implement them in R. Failing that I'd be interested in other
conformal splines. I need to smooth and interpolate animal tracking data.
Antarctic Wildlife Research Unit
School of Zoology
University of Tasmania
PO Box 252-05
Hobart
TAS, 7001
Australia
Phone: (0)3 6226 2645
Fax:
2010 Jul 09
3
R crashes with large vectors
Good afternoon,
I have been experiencing a lot of crashes working with large vectors in R.
Specifically, I am using XTS of length of minimum 120k elements.
My problem is that I cannot display the vector (otherwise R crashes), I
cannot plot it either (otherwise R crashes). That could be solved by
reducing the amount of points.
However, I have been performing some statistical opreations on is
2003 Jul 10
1
Contour Plots
Hello,
I'm a grad. student in statistics and am looking for some information on how
R draws its contours. I suspect you are using a Bezier spline. I have the
C code but am curious about how it works.
Riley A. Metzger
University of Waterloo
Waterloo, Ontario, N2L 3G1
(519) 888-4567 Ext. 3715
rileymetzger at alumni.uwaterloo.ca