search for: absenced

Displaying 20 results from an estimated 1956 matches for "absenced".

Did you mean: absence
2013 Sep 20
3
search species with all absence in a presence-absence matrix
Dear list I have a matrix composed of islandID as rows and speciesID as columns. IslandID: Island A, B, C….O (15 islands in total) SpeciesID: D0001, D0002, D0003….D0100 (100 species in total) The cell of the matrix describes presence (1) or absence (0) of the species in an island. Now I would like to search the species with absence (0) in all the islands (Island A to Island O.)
2008 Sep 20
2
AUC / ROC for presence only.
Dear all, I have a probability of presence of distribution of a species of interest (varying from 0 to 1 in continuous form) and I have a set of points where I know that species really occurs. But I don´t have points of absence. So, for each true presence I know the estimated presence. I would like to know how can I compute AUC, taking account these Available data. Best wishes,
2013 Sep 27
3
Compare species presence and absence between sites
Dear List, I want to compare the presence and absence of bird species based on the sites in a matrix. The matrix has 5 rows for Island A, B, C, D, and E. It has 100 columns for bird species D001-D100. In each cell of the matrix, the presence-absence of bird species will be recorded as 1 or 0. (For example, if species D001 is found on Island D, the matrix cell of species D001 and Island D
2012 Oct 06
2
Presence/ absence data from matrix to single column
I've been trying to reshape this database but haven't succeed at it. I tried using loops but can't get it right. I just want to reshape my database from this matrix, to the one below, with only one column of data. Year Route Point Sp1 Sp2 Sp3 2004 123 123-1 0 1 0 2004 123 123-2 0 1 1 2004 123 123-10 1 1 0 Year Route Point 2004 123 123-1 Sp1 0 2004 123 123-2 Sp1 0 2004 123
2007 Jul 18
3
how to combine presence only data sets to one presence/absence table
Problem: I have a Set of samples each with a list of observed species (presence only). Data is stored in a excel spreadsheet and the columns (spl) have different numbers of observations (spcs). Now I want to organize the data in a species by sample matrix with presence/absence style in R. data style (in excel): spl_A spl_B spl_C spcs1 spcs1 spcs2 spcs2 spcs3 spcs3 spcs4 spcs5 spcs5 desired
2019 Jun 02
1
[PATCH] drm/nouveau/bios: downgrade absence of tmds table to info from an error
Absence of a TMDS Info Table is common on Optimus setups where the NVIDIA gpu is not connected directly to any outputs. Reporting an error in this scenario is too harsh. Accordingly, change the error message to an info message. By default the error message also causes a boot flicker for these sytems. Signed-off-by: Rhys Kidd <rhyskidd at gmail.com> ---
2010 Aug 09
0
PCA analysis, presence-absence of mammals in parks
Hi everyone, So I am trying to see which ecological parameter of different parks in nyc influence the most the diversity of the medium-sized mammals in those parks. I have a bunch of different parameters for each park I'm done studying and the presence (1) and absence (0) of each mammal. I wanted to do a principal component analysis of those data to know which ones of those parameters are the
2007 Apr 27
4
Randomising matrices
I would like to be able to randomise presence-absence (i.e. binary) matrices whilst keeping both the row and column totals constant. Is there a function in R that would allow me to do this? I'm working with vegetation presence-absence matrices based on field observations. The matrices are formatted to have sites as rows and species as columns. The presence of a species on a site is
2013 Apr 29
4
expanding a presence only dataset into presence/absence
Hello, I'm working with a very large dataset (250,000+ lines in its' current form) that includes presence only data on various species (which is nested within different sites and sampling dates). I need to convert this into a dataset with presence/absence for each species. For example, I would like to expand "My current data" to "Desired data": My current data
2011 May 10
1
Rationale for an absence of a native file-logging configuration option for OpenSSH-Server
Good afternoon, I wanted to ask quickly about the rationale for not allowing explicit declaration of a log file to receive logging output. Whilst using syslogd is convenient for system processes, for short-lived applications, such as booting an SSH server (and wishing to monitor it) for testing purposes? having to also configure syslogd to receive output is inconvenient. I ask because it seems
2010 Jan 29
1
Problem with ringing (or absence of...) with Polycom forwarding
Hi, I`m having a problem I cannot explain. When dialing 555-555-5555 (for example), I get a ringing sound until the person answers. When I have my Polycom forwarded to 555-555-5555, I do not get the ringing, but it dials fine and eventually when the person answers everything works fine. Where could be the difference? Both are using the same context to dial out. Mike --------------
2008 Mar 31
1
unexpected GAM result - at least for me!
Hi I am afraid i am not understanding something very fundamental.... and does not matter how much i am looking into the book "Generalized Additive Models" of S. Wood i still don't understand my result. I am trying to model presence / absence (presence = 1, absence = 0) of a species using some lidar metrics (i have 4 of these). I am using different models and such .... and when i
2020 Oct 23
0
The presence/absence of `zone` in POSIXlt depending on time zone as a cause of possible inconsistences?
?Hi again, I take advantage of my previous mail to ask you a question for which I was looking for an answer when detected the behaviour I previously told. In the help of DataTimeClasses one can read: "POSIXlt" objects will often have an attribute "tzone", a character vector of length 3 giving the time zone name from the TZ environment variable and the names of the base time
2007 Apr 01
4
Abundance data ordination in R
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2017 Jul 06
2
Uncovering non-determinism in LLVM - The Next Steps
On 6 July 2017 at 11:02, Robinson, Paul via llvm-dev <llvm-dev at lists.llvm.org> wrote: > Grang, Mandeep Singh wrote: >> I would like to hear the community's thoughts on these proposals. >From the perspective of the recent focused effort on reproducible builds, I think this is excellent. >> We ideally want to compare rel vs >> rel+asserts vs debug with Linux vs
2006 Jan 30
2
yet another vectorization question
Dear R-helpers, I'm trying to develop a function which specifies all possible expressions that can be formed using a certain number of variables. For example, with three variables A, B and C we can have - presence/absence of A; B and C - presence/absence of combinations of two of them - presence/absence of all three A B C 1 0 2 1 3 0 4 1 5 0 6 1
2013 Sep 06
1
Fwd: calculating dissimilarity index of islands (vegan and betapart)
Dear List, This is Elaine, a postgraduate studying in bird distributions in East Asia. I want to calculate Simpson dissimilarity index, based on a presence/absence matrix of bird species in islands in East Asia. (matrix row: 36 islands/matrix column: species ID) (R package vegan to make NMDS and R package betapart) In most papers using vegan for NMDS and betapart for dissimilarity
2005 Sep 20
1
[3.5 Server] Problem with libjpeg.a or absence of
Hello CentOS, I am trying to compile zoneminder which requires libjpeg.a I jave libjpeg.so installed okay. Is there a package or do I have to recompile the libjpeg package Sean -- +---------------------------------------------------+ |VOIP= FreeWorldDial: 689482 VOIPBUSTER: thecivvie | |GPG Key http://thecivvie.fastmail.fm/thecivvie.asc |
2007 Jun 04
0
Patch to enable python bindings in absence of docs build
As discussed on IRC. The naming conventions aren't ideal, but the intent feels right and it works for me. J -- /--------------------------------------------------------------------------\ James Aylett xapian.org james at tartarus.org uncertaintydivision.org -------------- next part -------------- Index:
2006 Dec 10
0
My absence of late
I've kinda been in limbo for awhile, for which I apologize. I've moved cross-country from California back to Georgia. Had a bit of an employment problem last month in that I was let go and found myself looking for a new employer. Thankfully it seems I've had the same good luck Guido had a few months back and found an employer that is a complete Debian house. While they currently