ot;images", "nuclei.tif",
package="EBImage"))
writeImage(nucEBo, "C:/Rfiles/nuclei-3.jpg")
# to convert nuc_EB_o
nucEB_to_IMG <-
nucEB_to_MAG <-
#convert from imager
library(imager)
nuc_IMG_o <- load.image("C:/Rfiles/nuclei-3.jpg")
# to convert nuc_
Hi,
I would like to have help in converting from one image format to another
(between the packages EBImage, magick and imager). The magick package has
functions for this. But the EBImage and imager packages do not have
in-built functions for the conversion. It is, of course, possible to save
the im
The result that I want to get is this:
for (i in 1:5) {
for (j in 1:4) {
B[i,j] <- ifelse(C[i,j]==FALSE,0,B[i,j])
}
}
I would like to know if I can do this without loops.
Den lör 5 sep. 2020 kl 20:18 skrev Vivek Sutradhara :
> Hi
> I would like to get help in combining two matri
Hi
I would like to get help in combining two matrices. Here is my example:
A <- 1:20
B <- matrix(A,nrow=5,ncol=4)
# B is a numerical matrix
C <- B<7
C[4,4] <- TRUE
# C is a logical matrix
# if I combine A and C, I get a vector
D1 <- A[C==TRUE]
D1
D2 <- A[C==FALSE]
D2
I want to get a matrix with th
Hi,
I have tried to develop a simple method of correcting some artefacts in an
image with R. Before proceeding further with image analysis.
An example of my attempt:
library(imager)
im <- load.example('coins')
imr <- as.raster(im)
plot(imr)
sel <- locator(n=1)
sel
x1 <- floor(sel$x)
x2 <-
ot;, "y+", "z"))
surface3d(x, y, vol2, color = col, back = "lines")
grid3d(c("x", "y+", "z"))
surface3d(x, y, vol2, color = col, back = "lines")
2017-10-19 16:47 GMT+02:00 Vivek Sutradhara :
> Hi R users and experts,
> I am
Hi R users and experts,
I am interested in learning more about the use of 3D plots. Specifically, I
want to add points and lines to a surface plot. And get the axes and labels
plotted also. Here is what I have tried with an example data set :
library(rgl)
vol2 <- 2*volcano # Exaggerate the relief
> Bert
>
>
>
> Bert Gunter
>
> "The trouble with having an open mind is that people keep coming along and
> sticking things into it."
> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
>
> On Tue, Sep 19, 2017 at 2:37 AM, Vivek Su
Hi all,
I am trying to implement the following matlab code with Ryacas :
syms U x x0 C
d1=diff(U/(1+exp(-(x-x0)/C)),x);
pretty(d1)
d2=diff(U/(1+exp(-(x-x0)/C)),x,2);
pretty(d2)
solx2 = solve(d2 == 0, x, 'Real', true)
pretty(solx2)
slope2=subs(d1,solx2)
I have tried the following :
librar
ere as well?
Would appreciate continued help.
Thanks
2017-08-11 11:49 GMT+02:00 PIKAL Petr :
> Hi
>
> see in line
> > -Original Message-
> > From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Vivek
> > Sutradhara
> > Sent: Friday, August
Hi all,
I would like to have help in getting annotation ticks (corresponding to the
minor grid) on my plot. Here is my toy example :
par(mar=c(5, 6, 5, 5) + 0.1)
x<-1:10
y<-x^2
plot(x,y,log="xy",xlab="log(x)",ylab="log(y)")
par(new=T)
plot(log(x),log(y),type='n',col="red",xaxt="n",yaxt="n",
Hi,
I have now re-installed Rtools. This has solved my problem.
Even previously, Rtools was the first on the path. However, thanks a lot
for this help. I can now move on.
Thanks,
Vivek
2017-06-03 13:09 GMT+02:00 Duncan Murdoch :
> On 03/06/2017 7:00 AM, Vivek Sutradhara wrote:
>
>&g
Hi,
As far as I can see, no.
On checking, I have confirmed that the only location of
cygwin1.dll is :
C:\Rtools\bin
Thanks
Vivek
2017-06-03 12:57 GMT+02:00 Duncan Murdoch :
> On 03/06/2017 6:31 AM, Vivek Sutradhara wrote:
>
>> Hi all,
>> I am having some problems in updating
Hi all,
I would just like to add that I have installed R3.4.0patched and again run
the same commands. This does not help. I get essentially the same error
message. It is just a lot more longer with multiple repetitions of
essentially the following :
c:/Rtools/mingw_32/bin/g++ -std=gnu++11 -I"C:/R
Hi all,
I am having some problems in updating some packages from source. I start
with :
install.packages("Boom",lib="C:/RownLib",type="source")
I get the following error message :
* installing *source* package 'Boom' ...
** package 'Boom' successfully unpacked and MD5 sums checked
** libs
*** ar
Hi,
I am having a problem with the use of the foreach package. It is strange
that my code works when i use the %do% function but not with %dopar%.
Let me explain. I am new to parallel and foreach packages. I have data in
the form of very large files, and they are in the form of data tables. I
have
Hi Rainer and John,
Thanks once again for your continued help. I have actually tried out
mdbtools. I was able to get going on ubuntu. Unfortunately, to my
disappointment, it was not helpful in my specific case. Because the access
database is on a server which can be accessed only on windows and not
t;
> This looks like a good topic for the R-sig-db mailing list if you have
> further questions about R and databases, or find a SQL support forum if you
> need to learn more about using SQL in general.
>
> On November 20, 2015 10:32:31 AM PST, Vivek Sutradhara <
> viveksu...@gm
t; namedRegion A named region in the Workbook. If not NULL startRow, rows and
> cols paramters are ignored.
>
>
> On Fri, Nov 20, 2015 at 11:38 AM, Vivek Sutradhara
> wrote:
>
>> Hi
>> I want to extract data from a Microsoft access database havi
Hi
I want to extract data from a Microsoft access database having many tables
with more than 1e7 rows. I find that the following code works to export a
table to a rds file :
#
setwd('C:/sFolder')
library(RODBC);library(DBI)
ch<-odbcConnect("sample")
#No. of rows in the table no
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