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Questions tagged [maxent]

Software library based on the maximum-entropy approach for species habitat modeling

The software takes as input a set of layers or environmental variables (such as elevation, precipitation, etc.), as well as a set of georeferenced occurrence locations, and produces a model of the range of the given species.

See the project homepage for more.

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trying to get jackknife for my maxent sdm model in R

i was doing SDM using MaxEnt in R but i couldnt run jackknife test # add uae shapefile` uae = readOGR(dsn ="C:/Users/Predator/Downloads", layer="Boundaries_UAE_0_GAUL") pj = gbif("Prosopis", "juliflora", ext=uae ,geo=T) #with geographic points…
Ahmad Mamdouh Akkad
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How to fix an argument error with the "BIOMOD_ModelingOptions()" function in R

I have been using R code to predict the future distribution of small mammal species based on records of their occurrence in the Atlantic Forest and predictions of environmental variables. I used this code just fine throughout last year, but now it…
Isabella Bento
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ENMtools version 1.3 cannot calculate niche overlap due to out of memory

I tried to run ENMTools on Windows. And I set ENMTools option and Maxent option as manual suggested. The “RAM to assign to Maxent” option was set as 512. But when I calculate the niche overlap from two ASCII files, the software kept saying "out of…
monica
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Is there any R script which can compute both Kappa and TSS from Maxent output?

I´m currently working in some ecological niche modeling for endangered species, I´m using MaxEnt software that brings as a validating method the AUC. I would like to use another methods for that. Is there any R script which can compute both Kappa…
Rogelio Muñoz
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Why I got a AIC vector instead of a single value in maxnet in R

I calculated the AIC of a Maxent output from maxnet package in R. I expected a single value as in AIC for a stardanrd glm but I got a vector. I do not understand why and if it is possible to have a single…
Giordano
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How to calculate AIC from a maxnet model in R

I would like to perform an AIC on a maxnet model. I run a model using maxnet package in R and I want to perform an AIC on this model. I tried to use the SDMtune package in R but the class of the maxnet output does not correspond to the class…
Giordano
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Dealing with the differences in spatial resolution between dependent variable and environmental variables

I'm trying to model the potential distribution of a species in Maxent 3.4.1, for which I have occurrence data in a region with cells at 500x500 m resolution. However, the environmental/climatic rasters that I'm using to predict the distribution are…
BAdm
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java.awt.HeadlessException error running maxent in "dismo" through rJava

I am trying to run the maxent function in the dismo package on macOS through rJava and keep getting this error message. Error in rJava::.jcall(mxe, "S", "fit", c("autorun", "-e", afn, "-o", : java.awt.HeadlessException Has anyone seen it before and…
ggbees44
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Cumulative output format resulting in NAs when using dismo::predict function in R

I have run a maxent model using the dismo package in R. I am able to use the predict function to view the output format as "raw" or "cloglog" but when I try the "cumulative" format I get "NA" values and a blank output. In summary, this code works…
Kate Dey
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Sdm maxent enmeval 'unused argument (kfolds = 10)'

I am currently trying to make a biosfile prior to running maxent but keep getting faced with this error: I wonder if anyone has faced this issue before and fixed it please? bg <- xyFromCell(dens.ras2speciesocc, …
Bethany Clarkson
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Why do I get "ERROR: Invalid algorithm specified"?

So I was trying to classify my data using Maximum Entropy method, with the code below: container<-create_container(mat, sentiment_all, trainSize=1:823, testSize=824:1030, virgin=FALSE) models<-train_models(container, algorithms =…
Falira Paramitha
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R: MaxEnt species distribution modeling with lapply -> args implicate different number of rows

) I want to apply dismo::maxent to a list of multiple datasets with lapply. But I get the error message that the arguments have a different number of rows, which is very strange because I created one dataset from the other one and they should have…
Denny
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MaxentVariableSelectoin error in rasterObjectFromFile(x, band = band, objecttype = "RasterLayer", :

I'm using the MaxEntVariableSelection package and repeatedly getting the following error when trying to execute VariableSelection even after setting all the things as explained in MaxentVAriableSelection Vignette. Any help to skip this error is…
Dias'90
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MaxentVariableSelection Error in read.table(file = file, header = header, sep = sep, quote = quote, : no lines available in input

I'm trying to run VariableSelection function in MaxentVariableSelection but stuck with the error saying Error in read.table(file = file, header = header, sep = sep, quote = quote, : no lines available in input Here is the code I am…
Dias'90
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Cannot open the connexion in Maxent model generation

The output of my code gives this error message and I am not able to fix it. The code itself is long, so I just give you the part that I believe not working, but please ask if you need to see some more. It seems to me that everything is ok, I have…
Recology
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