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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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raster::stack returns NA values in raster despite know values

I am creating ASCII files to include in a MaxEnt model in R. When I create the layers and look at the raster values I can see them and they are correct, e.g.: > r_test3 class : RasterLayer dimensions : 4698, 3919, 18411462 (nrow, ncol,…
DFinch
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OpenNLP doccat trainer always results in "1 outcome patterns"

I am evaluating OpenNLP for use as a document categorizer. I have a sanitized training corpus with roughly 4k files, in about 150 categories. The documents have many shared, mostly irrelevant words - but many of those words become relevant in…
Orolo
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Maxent Species Distribution Modelling in R - finding probabilities associated individual cells/points?

Good afternoon, I have recently developed a Maxent species distribution model in R for a reptile endemic to Madagascar, using native-range presence-only data. The model performs well (as judged by AUC). I have now projected this model onto Florida,…
PhelsumaFL
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Calculate overlap of protected area polygons with predicted maxent habitat suitability

I want to calculate the percentage area of habitat suitability of a species that overlaps with protected area polygons. I do not know the R language very well, but here is what I have so far. These are the attributes of the area of habitat…
crocsandturtles
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Project MaxENT fitted model into geographic space

Similar question was answered here; however, this problem is a bit different for which I cannot apply that solution. I have fitted maxent using site-with-data format. The problem is I cannot project the fitted model. The output of m1 in the path…
Tiny_hopper
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Is there any code to add standard error lines in ROC for maxent using R?

I am using maxent in R to predict the distribution of a certain specie with two climate change scenarios. I am using a simple code to know the ROC/AUC but i want a code that would plot standard deviation line (standard error) with the ROC in the…
tayyabakhalil4
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Mallet: "Error occurred during initialization of VM. Could not reserve enough space for 3145728KB object heap?

java.lang.OutOfMemoryError: Java heap space is resolved by increasing the Xmx3G, but now I am getting "Error occurred during initialization of VM. Could not reserve enough space for object heap. What should I do? I am trying to execute…
sagarjain1991
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R programming error for prediction and error is predict.svm: test data does not match model

I tested a new data that is provided from uI, so i used new.csv file which has same column name as trained model. What is the problem with this? i get error in this line classify_models(container2,maxent_model) load("maxent.rda") new =…
suman
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What's wrong with my code to get weight of MAXEnt

I have 8 features for maxent classifier and want to know each weight, because I need information of how important each features is. for i in range(len(list)): features = {} features['a'] = 0 features['b'] = 0 …
seKim
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What is the output format of a Maxent model run in Biomod2 (raw, cumulative, logistic or cloglog) and can it be specified by the user?

I'm building a species distribution model/habitat suitability model using the package biomod2. Maxent allows the user to choose one of four output formats (see title) when the Java application is used directly. However, when Maxent is called by…
Tristan
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Error Messages in R for MaxEnt model

I am having some trouble running MaxEnt in R. I keep getting two error messages: 1) Error in data.frame(..., check.names = FALSE) : arguments imply differing number of rows: 1, 2, 0 and 2) Warning message: In mean.default(sapply(e, function(x) {…
Chris R.
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calculating area of most suitable raster habitat in R

I have run Maxent for multiple species under present conditions and also under future climate change scenarios. I was quantifying changes between present and future suitable habitat using the nicheOverlap function and Schoener's D statistic. Quite a…
Stubbs
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How to tune maximum entropy's parameter?

I am doing text classification with scikit learn's logistic regression function (http://scikit-learn.org/stable/modules/generated/sklearn.linear_model.LogisticRegression.html). I am using grid search in order to choose a value for the C parameter.…
user6525797
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Stanford Classifier ColumnDataClassifier

I am using the Maximum Entropy algorithm provided by the Stanford Classifier in order to perform a customized Named Entity Recognition. The output file provides 5 columns --> word \t ground-truth \t label \t P(clAnswer) \t P(goldAnswer)) Which is…
Alex Torrisi
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R stops working/terminate when execute maximum entropy program

I need your help because I don't understand why my RStudio terminater/stop working when execude maimum entropy to text classification. I using tweet data 7877 row. There is the code…
Fransiscus
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