biomod2 | computer platform for ensemble forecasting | Predictive Analytics library
kandi X-RAY | biomod2 Summary
kandi X-RAY | biomod2 Summary
biomod2: Ensemble Platform for Species Distribution Modeling.
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QUESTION
As question says, I am trying to convert a multi-layer terra
raster to a rasterStack
object so I can use it with another package (biomod2
) that only accepts older raster
objects.
Are there any efficient methods of doing this? My only other option seems to save it as a .tif and then re-import it to R using raster
.
When I use stack(terraRaster)
, it duplicated some of the layers. For example, I have a stack that consists of the 19 WorldClim bioclimatic variables plus on layer for geology. Here is was it looks like:
ANSWER
Answered 2022-Feb-01 at 19:33You can use either raster::stack
or raster::brick
QUESTION
I am using the Biomod2
package to run a series of species distribution models in R. One of the modelling techniques I am using is a classification tree analysis (CTA) which uses the rpart
package.
The response in these models are presence/absence of a plant species and the predictor variables are contained in a rasterStack
. Most of the variables in the rasterStack
are continuous numeric variables with the exception of one land cover variables, geology, which is a factor. I stacked each individual rasterLayer
and after, used as.factor()
to convert the geology layer to a factor.
I am running into an error message when trying to predict from the CTA. The CTA model was built with a data frame in which "geology" is a factor (see below) and used the raster predict
function on a rasterStack
("geology" is a factor, see below). However, running the predict
function, I get an error saying I supplied a numeric instead of a factor. I have checked all possible points to see if somehow "geology" get converted back to numeric but it seems to be a factor (as it should) everywhere I look.
EDIT: Changed data to make reproduceable.
...ANSWER
Answered 2021-Mar-13 at 23:50In this case you need to help predict
a bit by providing the factor name(s) and levels
QUESTION
I am unable to install the 'ecospat' package on R and I was wondering why this could be?
After running the following bit of code using R in windows.....
...ANSWER
Answered 2020-Mar-30 at 10:00First of all you need to update your R version. I think you use an R 3.4 version.
The main reason why your installation fails is that you need to install pROC > 1.15
and this is not available for R 3.4.
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