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Welcome to the Maxent Google Groups forum. We post and answer questions about species distribution / niche modeling, particularly troubleshooting and best practices for Maxent, workflows in R and ArcGIS, and ecology in general.

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Martin Lowry, Bede-Fazekas Ákos4

Jan 17

Choice of "current" bioclimate variables

Hello Martin, In R, you can use package "blockCV". I'm not familiar with the standalone

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Choice of "current" bioclimate variables

Hello Martin, In R, you can use package "blockCV". I'm not familiar with the standalone

Jan 17

Wondessen Ayalew, Bede-Fazekas Ákos3

Jan 16

Error in VariableSelection() with Maxent: "character string expected"

Dear Akos and all, Thank you for your valuable suggestions. I am encountering an error despite

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Error in VariableSelection() with Maxent: "character string expected"

Dear Akos and all, Thank you for your valuable suggestions. I am encountering an error despite

Jan 16

Babu Ram Paudel, … Marcelo Lima3

Jan 16

Anticipating help for worldclim data downscaling

Hi Babu, I have come across a similar issue, and I came across these resources: https://sites.

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Anticipating help for worldclim data downscaling

Hi Babu, I have come across a similar issue, and I came across these resources: https://sites.

Jan 16

Jan 15

Variable with lambda=0 has non-zero contribution. How?

Looking into the lambdas file I see that several of my environmental variables have a lambda value of

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Variable with lambda=0 has non-zero contribution. How?

Looking into the lambdas file I see that several of my environmental variables have a lambda value of

Jan 15

Wondessen Ayalew

Jan 15

Maxent error post

Dear Moderator, I hope this message finds you well. I recently attempted to post a question in the

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Maxent error post

Dear Moderator, I hope this message finds you well. I recently attempted to post a question in the

Jan 15

Jan 15

Maxent settings for less than 50 bird occurrence points.

All my species presence points are less than 50: First one has 5 points Second one has 13 points Last

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Maxent settings for less than 50 bird occurrence points.

All my species presence points are less than 50: First one has 5 points Second one has 13 points Last

Jan 15

Ahmed El-Gabbas, … Martin Lowry6

Jan 15

Permutation importance dominated by one or a few variables

The code was released as Open Source some time ago. You can see that the permutation does indeed use

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Permutation importance dominated by one or a few variables

The code was released as Open Source some time ago. You can see that the permutation does indeed use

Jan 15

Jan 15

ascii file problems

Hi everyone. Trying to get started with the model but hitting barriers with file format. Here's

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ascii file problems

Hi everyone. Trying to get started with the model but hitting barriers with file format. Here's

Jan 15

Wondessen Ayalew

Jan 15

Maxent variable selection error

Hi folks, I am using Maxent in R to model species distribution for Ethiopian sheep. I am new for ENM

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Maxent variable selection error

Hi folks, I am using Maxent in R to model species distribution for Ethiopian sheep. I am new for ENM

Jan 15

Jan 15

how to do block partition method in maxent?

Hello I'm wondering whether you can do block partition method through maxent GUI? or at least how

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how to do block partition method in maxent?

Hello I'm wondering whether you can do block partition method through maxent GUI? or at least how

Jan 15

Jan 15

QGIS To Align Raster Layers Rounding Issue

Hi everyone, Trying to align two raster layers in QGIS for maxent modeling. When using the "

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QGIS To Align Raster Layers Rounding Issue

Hi everyone, Trying to align two raster layers in QGIS for maxent modeling. When using the "

Jan 15

Gourav Devtalla

Jan 15

Extract by mask problem arcmap

I am not able to extract by mask as my shape file is not showing on the bio clim data. Kindly help

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Extract by mask problem arcmap

I am not able to extract by mask as my shape file is not showing on the bio clim data. Kindly help

Jan 15

Usmael Ahmed, … sa laar14

Jan 2

If possible to send the full code in R On Thu, Jan 2, 2025, 09:07 Gebreyohannes Zenebe <zegere777@

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If possible to send the full code in R On Thu, Jan 2, 2025, 09:07 Gebreyohannes Zenebe <zegere777@

Jan 2

Andrés González, Mirza Sium Masud2

12/23/24

Bioclim variables 30s

Hi, Yes the site is down. I tried as well. My proff suggested CHELSA to me. Which is a Switch based

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Bioclim variables 30s

Hi, Yes the site is down. I tried as well. My proff suggested CHELSA to me. Which is a Switch based

12/23/24

mgde...@gmail.com, Gebreyohannes Zenebe3

12/10/24

SDM Toolbox Mask for spatial Jackknife out of geographic bounds

Hi Zenebe, I did that before, and indeed, they are different, but I want to understand why the script

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SDM Toolbox Mask for spatial Jackknife out of geographic bounds

Hi Zenebe, I did that before, and indeed, they are different, but I want to understand why the script

12/10/24

mgde...@gmail.com, Cheten La3

12/8/24

SDM Toolbox Extract by folder error

Thanks. I wasn't doing it right. Cheers On Monday, 2 December 2024 at 17:35:36 UTC Cheten La

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SDM Toolbox Extract by folder error

Thanks. I wasn't doing it right. Cheers On Monday, 2 December 2024 at 17:35:36 UTC Cheten La

12/8/24

12/3/24

Small island- what environmental layers to use?

Hi folks, I'm going to run Maxent for a small island, ~14.000 ha. As Chelsa and WorldClim lowest

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Small island- what environmental layers to use?

Hi folks, I'm going to run Maxent for a small island, ~14.000 ha. As Chelsa and WorldClim lowest

12/3/24

Rahul G, … Antonio Sampedro9

12/1/24

Dear Jamie and friends. I came up. with something that might be a useful idea to store the model

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Dear Jamie and friends. I came up. with something that might be a useful idea to store the model

12/1/24

11/29/24

Maxent Variable Selection R Package

Hi everyone I'm currently using the Maxent Variable Selection package in R, but I'm

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Maxent Variable Selection R Package

Hi everyone I'm currently using the Maxent Variable Selection package in R, but I'm

11/29/24

Marcelo Lima, Gebreyohannes Zenebe3

11/28/24

Project boundary and Chelsa overlap issue

Hi Zenebe, thank you for this. Unfortunately, that is not the case here. The Chelsa data I'm

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Project boundary and Chelsa overlap issue

Hi Zenebe, thank you for this. Unfortunately, that is not the case here. The Chelsa data I'm

11/28/24

Ola-Mattis Drageset

11/28/24

ArcGIS Pro "ERROR 110202: Problem parsing explanatory raster datasets"

Has anyone encountered this error when running maxent i ArcGIS Pro? It occurs when I allow for

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ArcGIS Pro "ERROR 110202: Problem parsing explanatory raster datasets"

Has anyone encountered this error when running maxent i ArcGIS Pro? It occurs when I allow for

11/28/24

Navinder Singh, … fabiola.r...@gmail.com6

11/26/24

Fixing the result plots and pictures of Maxent

Hi, To produce the ROC curves within R, the "A Brief Tutorial in Maxent" has some code you

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Fixing the result plots and pictures of Maxent

Hi, To produce the ROC curves within R, the "A Brief Tutorial in Maxent" has some code you

11/26/24

11/22/24

Ecology and Conservation Modeling in ArcGIS

Hi folks, I haven't watched this yet but I wonder if anyone has experience using this workflow or

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Ecology and Conservation Modeling in ArcGIS

Hi folks, I haven't watched this yet but I wonder if anyone has experience using this workflow or

11/22/24

Simon Tarr, … Lays4

11/3/24

Jackknife on variables/environmental predictors

Hey, simon. Did you ever find out a way to jackknife the variables using enmeval? I am going through

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Jackknife on variables/environmental predictors

Hey, simon. Did you ever find out a way to jackknife the variables using enmeval? I am going through

11/3/24

faramarz bozorgomid

10/22/24

Request for Aligned RCP Scenario Data for BCC-CSM2-MR Model (2030 & 2050)

Dear all, I am currently working on modeling with RCP scenarios using the BCC-CSM2-MR model at a 30-

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Request for Aligned RCP Scenario Data for BCC-CSM2-MR Model (2030 & 2050)

Dear all, I am currently working on modeling with RCP scenarios using the BCC-CSM2-MR model at a 30-

10/22/24

Manuel Spínola, … Милош Поповић7

10/7/24

Maxent on areal data (polygons)

Thank you very much Milos. Manuel El sáb, 5 oct 2024 a las 1:26, Милош Поповић (<gpo...@gmail.com

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Maxent on areal data (polygons)

Thank you very much Milos. Manuel El sáb, 5 oct 2024 a las 1:26, Милош Поповић (<gpo...@gmail.com

10/7/24

mgde...@gmail.com, … Pablo García Díaz18

10/7/24

Can BioClim variables be used for a SDM on a small area? Any alternatives?

Hi Pablo, no. I haven't used R much to be honest. It's difficult for old dogs to learn new

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Can BioClim variables be used for a SDM on a small area? Any alternatives?

Hi Pablo, no. I haven't used R much to be honest. It's difficult for old dogs to learn new

10/7/24

Thanh Trang Pham, … Andrés González10

9/29/24

AUC lower than 0.7

Dear all, Here is my result. > predictions <- runif(10000, min = 0, max = 1) > presence <

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AUC lower than 0.7

Dear all, Here is my result. > predictions <- runif(10000, min = 0, max = 1) > presence <

9/29/24

makani...@gmail.com

9/12/24

older environmental data

I have occurrence data with a wide range of dates and looking to make some SDMs to better understand

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older environmental data

I have occurrence data with a wide range of dates and looking to make some SDMs to better understand

9/12/24

Kerim ÇİÇEK, Bede-Fazekas Ákos3

9/9/24

Problem in the paleo-climate dataset

Dear Ákos, Thank you for your prompt reply and recommendation. Have a great week!, Kerim 9.09.2024 11

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Problem in the paleo-climate dataset

Dear Ákos, Thank you for your prompt reply and recommendation. Have a great week!, Kerim 9.09.2024 11

9/9/24

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