Displaying 20 results from an estimated 600 matches similar to: "error in rowSums:'x' must be numeric"
2005 Nov 09
2
how to convert strings back to values?
Dear All,
It's Eszter from Hungary, a total beginner with R. My problem is the
following:
I have a dataset with binary values as a comma separated textfile. The
samples are in the coloumns and the species are in the rows.
I have to transpose it for the further PCoA analysis. There is no
problem with reading the dataset.
When I transpose the dataset, the original values become
2010 Dec 28
3
Jaccard dissimilarity matrix for PCA
Hi
I have a large dataset, containing a wide range of binary variables.
I would like first of all to compute a jaccard matrix, then do a PCA on this
matrix, so that I finally can do a hierarchical clustering on the principal
components.
My problem is, that I don't know how to compute the jaccard dissimilarity
matrix in R? Which package to use, and so on...
Can anybody help me?
Alternatively
2011 May 17
1
simprof test using jaccard distance
Dear All,
I would like to use the simprof function (clustsig package) but the available distances do not include Jaccard distance, which is the most appropriate for pres/abs community data. Here is the core of the function:
> simprof
function (data, num.expected = 1000, num.simulated = 999, method.cluster = "average",
method.distance = "euclidean", method.transform =
2013 Feb 08
1
vegdist Error en double(N * (N - 1)/2) : tama?o del vector especificado es muy grande
---------- Forwarded message ----------
From: <r-help-owner@r-project.org>
Date: 2013/2/8
Subject: vegdist Error en double(N * (N - 1)/2) : tama?o del vector
especificado es muy grande
To: caro.bello58@gmail.com
Message rejected by filter rule match
---------- Mensaje reenviado ----------
From: caro bello <caro.bello58@gmail.com>
To: r-help@r-project.org
Cc:
Date: Fri, 8 Feb 2013
2012 Dec 06
1
clustering of binary data
Good morning,
I am analyzing a dataset composed by 364 subjects and 13 binary variables
(0,1 = absence,presence).
I am testing possible association (co-presence) of my variables. To do
this, I was trying with cluster analysis.
My main interest is to check for the significance of the obtained clusters.
First, I tried with the pvclust() function, by using method.hclust="ward"
and
2001 Nov 14
2
BASA GELEN CEKiLiR DEMEYiN..
I Don't speak the language it is in, but is this spam?
-----Original Message-----
From: samba-admin@lists.samba.org [mailto:samba-admin@lists.samba.org]
On Behalf Of SAGLAM SiGORTA
Sent: Wednesday, November 14, 2001 10:40 PM
To: samba@samba.org
Subject: BASA GELEN CEKiLiR DEMEYiN..
Importance: High
SA?LAM S?GORTA ARACILIK H?ZMETLER?
Merhabalar,
Size ?ncelikle firmam?z? tan?tarak
2005 Sep 13
6
form_tag & form_remote_tag html id attribute
Hello,
Is there a way to set the html element id for the form_tag and
form_remote_tag on the server side?
I want to have this resultant html...
<form id=''something'' ...
...
</form>
Thank you,
Brian Takita
2009 Mar 25
1
how to calcualte Jaccard Coefficient
Does anyone have a good method for calculating Jaccard coefficients now that the dissimilarity() function is no longer an option?
Wen Gu
John Jay College of Criminal Justice445 West 59 StreetNew York, NY 10029
wgu@gc.cuny.edu
_________________________________________________________________
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2005 Oct 04
3
[Q] file_column help needed
Hi all,
I''m trying to use file_column to upload a picture but
I''m getting the following error:
"cannot convert nil into String"
caused by the last line in
FileColumnHelper::url_for_file_column(object_name,
method)
url << object.send("#{method}_relative_path")
I don''t have any images uploaded for existing entries
so does this not
2004 Dec 10
1
How to circumvent negative eigenvalues in the capscale function
Dear All
I am trying to do a partial canonical analysis of principal coordinates
using Bray-Curtis distances. The capscale addin to R appears to be the only
way of doing it, however, when I try and calculate a Bray-Curtis distance
matrix either using Capscale or Vegedist (capscale I understand uses
Vegedist anyway to calculate its distance matrix), R uses up all available
memory on the computer,
2007 Jun 25
2
manipulate a matrix
I have read everything I can find on how to manipulate a results matrix in R and I have to admit I'm stumped. I have set up a process to extract a dataset from ArcGIS to compute a similarity index (Jaccards) in Vegan. The dataset is fairly simple, but large, and consists of rows = sample area, and columns = elements. I've been able to view the results in R, but I want to get the results
2013 Jul 18
1
binary distance measure of the "dist" function in the "stats" package
Dear all:
I want to ask question about "binary" distance measure. As far as I
know, there are many binary distance measures,eg, binary Jarcad distance,
binary euclidean distance, and binary Bray-Curtis distance,etc. It is even
more confusing because many have more than one name. So , I wan to know
what the definite name of the binary distance measure of the "dist"
function
2013 Feb 18
1
questions hash functions
Hello R, could you explain to me how to resolve this question:
If this is a matrix:
Element S1 S2 S3 S4
0 0 1 0 1
1 0 1 0 0
2 1 0 0 1
3 0 0 1 0
4 0 0 1 1
5 1 0 0 0
1. How is possible to ompute the minhash signature for each column if
we use the following
three hash functions:
2007 Apr 22
2
distance method in kmeans
I am trying to cluster some binary data using k-means . As the regular "kmeans" available from stats package in R does'nt provide the option to change the distance method. I was wondering there is any package available to specify type of distance measure to be used in k means clustering in R. Especially distances like "Jaccard" which is good for binary data.
2009 Oct 29
2
similarity measure for binary data
I am doing hierarchical clustering with cluster package. I couldnot find similarity measures like matching coefficient, Jaccard coefficient and sokal and sneath. Could anyone please tell package with similarity measures for binary data?
kind regards,
Ms.Karunambigai M
PhD Scholar
Dept. of Biostatistics
NIMHANS
Bangalore
India
From cricket scores to your friends. Try the Yahoo! India
2024 May 23
1
No RID Set found for this server. Can't self-allocate
The Samba ports are not filtered. The firewall is between STG-DC and
SAMBADC (both of them sync correctly). The sync problems happen in
VIG-DC3, which is behind the same firewall of STG-DC.
Here's nmap output (SAMBADC is 172.16.50.9):
root at vig-dc3:~# nmap -Pn 172.16.50.9
Starting Nmap 7.93 ( https://nmap.org ) at 2024-05-23 08:22 UTC
Nmap scan report for SAMBADC.ugt.ldap (172.16.50.9)
2004 May 11
1
stability measures for heirarchical clustering
Dear R users,
I'm interested in measuring the stability of a heirarchical clustering, of
the overall clustering and finding sub clusters (from cutting the
heirarchical clustering at different levels) which demonstrate stability.
I saw some postings on the R help from a while back about bootstrapping for
clustering (using sample and generating a consesus tree with a web based
tool CONSENSE)
2006 Nov 02
1
how to create fake cd drive?
Hello all:
How could I create a fake cd-rom drive in wine so that windows
programs would accept it as a cd drive?
I googled around but could not find any example only some
obscure info that it's doable.
TIA,
IG
______________________________________________________________________
KGFB-2007 az Els? Online Alkuszt?l! K?sse n?lunk ?jra k?telez? biztos?t?s?t!
Az ?sszes biztos?t? egy helyen,
2009 Nov 03
1
hierarchical clustering with Jaccard index
hi,
I want to do hierarchical clustering with Jaccord index. I tried to do with vegan package for finding index and hierarchical clustering with hclust function. While doing clustering it is showing an error message as "invalid distance method". I would be grateful if anyone tells how to rectify the error.
Thanks in advance,
kind regards,
Ms.Karunambigai M
PhD Scholar
Dept. of
2006 Mar 08
1
function gdist, dist and vegdist in mvpart
Dear R community,
I am analyzing plant communities with the function mvpart, using a
dissimilarit matrix as input. The matrix is calculated with the funtion
gdist.
fit <- mvpart(gdist (ba12[,18:29], meth="maximum", full=TRUE,
sq=F) ~ beers + slope_dem + elev_dem+ plc_dem + pr_curv+
+curv+max_depth+doc_rocks+ abandon+land_use+ca_old,
data=ba12, xv="p")
This