search for: absence

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.) Please kindly advise the R code for the search purpose. Thank you. Elaine [[alternative HTML version deleted]]

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, Miltinho autronauta brazil [[alternative HTML version deleted]]

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, t...

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

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 style: spl_A spl_B spl_C spcs1 1 1 0 spcs2 1 0 1 spcs3 0 1 1 . . . How and in which form do I import the data to R? (read.table() seems not to be appropriate, as data is not org...

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. Si...

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 most important. Here is what I have: Parc PBP VCP PP CP surfacekm? 0.917 4.64 0.0213 3.4 woodenarea 0.514 0.6355 0.32...

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...

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 Species Site Date a 1 1 b 1 1 b 1 2 c 1 3 Desired data Species Present Site Date a 1 1 1 b 1 1 1 c 0 1 1 a 0 2 2 b 1 2 2 C 0 2 2 a 0 3 3 b 0 3 3 c 1 3 3 I've scour...

...tem 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 logical to allow either a native file, or a syslog type system to be used, and the absence of a native-log-file directive in the configuration is inconvenient for me. Sincerely yours, Lee Hambley

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 --------------

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 used gam i got this very weird (for me) result which i thought it is not possible - or i have no idea how to interpret it. > can3.gam <- gam(can>0~s(...

...Stay safe, Iago ________________________________ De: R-devel <r-devel-bounces at r-project.org> de part de IAGO GIN? V?ZQUEZ <i.gine at pssjd.org> Enviat el: divendres, 23 d?octubre de 2020 19:03 Per a: r-devel at r-project.org <r-devel at r-project.org> Tema: [Rd] The presence/absence of `zone` in POSIXlt depending on time zone as a cause of possible inconsistences? Dear all, I have just detected what seems a minor inconsistence with data types. If one unlists a POSIXlt time with GMT zone gets a numeric vector, since the POSIXlt list has no `zone` element, while if one unlists...

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...ve had to teach our comparison tool to ignore. But we also > found some real bugs and that was very satisfying. It does seem like a good idea to start with comparing output compiled on 32- and 64-bit hosts, or on Windows and Linux. Out of curiosity what kinds of changes arise from the presence/absence of -g? (It's not just the expected presence/absence of the debug info?) > There might also be differences across hosts that you just have to live > with. Being able to build identical objects using the same version of Clang built with different host compilers on different operating syst...

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 7 0 0 8 0 1 9 1 0 10 1 1 11 0 0 12 0 1 13 1 0 14 1 1 15 0 0 16 0 1 17...

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 index, the dissimilarity index is generated by grid data in continents....

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 |

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:

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