Displaying 20 results from an estimated 10000 matches similar to: "R questions"
2023 Jan 26
1
akima interp results to zero with less than 10 values
The akima package has a problematic license (it doesn't allow commercial
use), so it's been recommended that people use the interp package
instead. When I use interp::interp instead of akima::interp, I get
reasonable output from your example.
So that's another reason to drop akima...
Duncan Murdoch
On 26/01/2023 9:35 a.m., PIKAL Petr wrote:
> Dear all
>
> I have this
2008 Jun 10
4
Hello
Hello,
I am facing a problem in drawing heat map using R.
I have a 70X3 matrix and I want to draw a heat map with 1 coloumn on X axis
another on Y axis and want to show the value of 3rd coloumn using heat
colours.
Could you please help me with this .
Thank you .
Regards,
Sumit
[[alternative HTML version deleted]]
2023 Jan 26
1
akima interp results to zero with less than 10 values
Dear all
I have this table
> dput(mat)
mat <- structure(c(2, 16, 9, 2, 16, 1, 1, 4, 7, 7, 44.52, 42.8, 43.54,
40.26, 40.09), dim = c(5L, 3L))
And I want to calculate result for contour or image plots as I did few years
ago.
However interp does not compute the z values and gives me zeros in z matrix.
library(akima)
> interp(mat[,1], mat[,2], mat[, 3], nx=5, ny=5)
$x
[1] 2.0 5.5
2006 Apr 05
1
(Fwd) Re: Reading xyz data from a file and plotting a cont
BTW. I checked help page of contour and maybe it could mention a note
about akima package or interp function.
Petr
------- Forwarded message follows -------
From: Petr Pikal <petr.pikal at precheza.cz>
To: "Abhinav Verma" <abhinav1205 at gmail.com>, r-help at stat.math.ethz.ch
Subject: Re: [R] Reading xyz data from a file and plotting a
2004 Jun 09
5
"attach" in R corr. to Spus one
Hi,
I am a newbie to R, just trying to switch from
Splus. I am wondering to know if there is any such
command in R as "attach" in Splus which can be used to
attach the full directory.
Also, any idea/referrence about, how to load c
functions in R would be highly appreciated.
Thanks,
Utsav
2007 Dec 14
2
What's the last version of Rails that lets you...
What''s the last version of Rails that lets you do this in your
controller.
scaffold :post
I need it for a set of video tutorials I purchased from lynda.com
Thanks!
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2012 Sep 11
4
Should i buy Ruby on Rails 3 Essential Training with Kevin Skoglund from Lynda.com
hello people, i m new to rails and i m thinking of buying Ruby on Rails 3
Essential Training with Kevin Skoglund tutorial
http://www.lynda.com/Ruby-on-Rails-3-tutorials/essential-training/55960-2.html
but problem is the tutorial is created on 2010 oct => so its 2 yrs old
so my question it is fine to Buy these Tutorial in the changing rails world?
Please Help me
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You received this
2010 Jun 14
7
"NoMethodError in AdminController#index" error
hi, im totally a newbie so i have got no idea whatsoever why i got this
error, the thing that happend was i was doing a little coding along with
the lynda.com rails series that i got this error.
well as u can see this is the error which i get on terminal, but there
is another one in browser too which says : "NoMethodError in
AdminController#index " u can see it in the picture here :
2007 Nov 29
2
image() plot with z not in matrix format
Hello R cracks
The image() function requires strictly increasing x and y values and z as a matrix.
Actually, I don't have equally spaced variables, but anyway want to plot an colored image() (with z-information).
An example of my problem is here:
a<-data.frame(rnorm(100), rnorm(100), runif(100)*100)
How can I plot this data as an image (x=a[,1], y=a[,2] and z=a[,3])-> according to
2003 Sep 20
4
persp graphs
Hi,
I am doing my way on R, with much experimenting. So, I am trying to plot a 3d
graphic ussing "persp" and entering a data set (attached) of UTM coordinates
as x,y and a pH values as z. However when I try an error message comes out
telling that increasing x and y values are expected. Jus ordering the first
vector does not help, and, of course, order the first two independently
2007 Nov 08
2
question on image() function?
Dear friends,
My dataset is like the following:
x y mcpvalue
0.4603578 0.6247629 1.001
0.4603715 0.6247788 1.001
0.4603852 0.6247948 1.001
0.4110561 0.5664841 0.995
The x and y variables are unsorted.
I use the function image(x,y,mcpvalue) to generate a plot, but the error
is that "increasing 'x' and
2003 Aug 13
1
Contour plot for arbitrary (x,y,z)
Hello.
Is there an easy-to-use contour plot function analogous to scatterplot3d
that can draw handle a dataset of arbitrary (x,y,z) triplets? That is,
say x, y, and z are each measured quanties, and exhibit neither order
nor regularity.
I looked at the lattice package function "contourplot" but it seems
complicated, and it's not clear from the documentation whether it can
2008 Jun 16
2
Plotting 3d data?
Hi all!
I'm very new to R, and I'm having trouble figuring out how to go from a file
of points that I have to a 3d surface plot of the data. I typically have
something like this:
X Y Z
0.005 0.023 34.45
0.0035 0.63 28.48
.
I've tried looking at the persp and wireframe packages, and the rgl package,
but I can't seem to figure out how to
2008 Sep 02
7
Deploying My Rails App
I have just finished my first Rails application following the
lynda.com tutorial, but I am not sure how to get my application on the
internet.
I have an ftp account through the applemachine server, but from what I
have read, I''m afraid I will not be able to host my application there.
What I am looking for is step by step directions on how to get from a
working Ruby on Rails application
2006 Jun 28
1
persp/ scatterplot3d
Dear WizaRds,
I would like to create a 3d-plot with persp(). I sampled 17 points
with xyz-coordinates (real-life example!), representing the peaks of the
whole plane with "zero coordinates" x=3,y=3,z=3. My intention is to show
which entries are above or below the "zero" level with persp() on a
nicely created grid. I also tried scatterplot3d(), but, alas, I am
unable
2003 Dec 19
2
[Mailman] question: contour plot for discrete data
Question:
I have matrix (n x3) that represents discrete data.
Each row of matrix is 3-D point (x,y,z). I would like
to get contour map (z value) at two dimension
(x,y). How can I use related contour function to do
this job?
I am not sure if I clarify this question. For example,
we can get point (x,y)
at 2 dimension according to first two columns of
matrix. Then I want to connect
same value
2019 Nov 14
4
how to know when a system is compromised
How do you know when a Linux system has been compromised??
Every day I watch our systems with all the typical tools, ps, top, who,
I watch firewall / IPS logs, I have logwatch setup and mailing daily
summaries to me and I dive deeper into logs if something looks suspicious.
What am I missing or not looking at that you security gurus are looking at?
I subscribe to the centos and SANS
2008 May 22
0
Phantom permissions -- where should I look ?
Using 3.0.28a.
I have a file:
-rw------- 1 lynda SMB_USER 89 2008-05-22 17:03 lynda@adviva[2].txt
Using "cp -a" I created an apparently identical copy except a trivially
different name:
-rw------- 1 lynda SMB_USER 89 2008-05-22 17:03 lynda@adwiwa[2].txt
Using vim I created a brand new file, with identical contents and
similar name:
-rw------- 1 lynda SMB_USER 89 2008-05-22
2006 Feb 21
6
How to Import Data
Hello,
I am a very new user of R. I've spent several hours trying to import
data, so I feel okay asking the list for help. I had an Excel file,
then I turned it into a "csv" file, as instructed by directions. My
filename is "x111.csv." I then used the following commands to read this
(fairly small) dataset in.
x111 <-read.table(file='x111.csv',
2006 Sep 21
3
newie help needed
hi,
I am a system admin who has just set up R-2.3.1 in suse 9.1 (opteron)
for a previous windows user. Please forgive any obvious stupid questions :)
We are struggling with a number of things.
1. is there a gui interface ? How do we use it ? R --gui just gets us
to the command line.
2. how do we do unix commands like cd ?
3. can we define default directories - eg for data files ?
4.