====== Generalized Dissimilarity Model - GDM ======

===== Description =====
This functor predicts the beta-diversity patterns by using environmental predictors. For more details, see: Ferrier, S., Manion, G., Elith, J., & Richardson, K. (2007). Using generalized dissimilarity modelling to analyse and predict patterns of beta diversity in regional biodiversity assessment. Diversity and Distributions, 13(3), 252–264. doi:10.1111/j.1472-4642.2007.00341.x

===== Inputs =====

^ Name            ^ Type                                      ^ Description                                                     ^
| Input Occurences | [[csv file | csv file]] | Csv file with species occurences (colunms sp, x, y). |
| Predictors | [[Map Type | Map Type]] | Map of predictor variables in geoTiff format. |
| Output folder | [[Folder | Folder]] | Folder to save outputs. |
| Input Mask | [[Map Filename Type | Map Filename Type]] | The filename of the shape of area of study. |
| Hexagons As Sample Units| [[Boolean Value Type | Boolean Value Type]] | Use hexagons as sample units to generate the species data table by location (recommended when data is sparse and with gaps). |
| Hexagon Size | [[Real Value Type | Real Value Type]] | Value that define size of sample units. |
| Minimum Number Of Samples | [[Real Value Type | Real Value Type]] | Minimum number of samples in hexagon|
| Project In Another Scenario| [[Boolean Value Type | Boolean Value Type]] | Project GDM in another scenario (future or past) |
| Folder Scenarios Raster | [[Folder | Folder]] | Folder with rasters for project in another scenario. The rasters should be named in the same way of predictors. |
| Use Geographical Distances| [[Boolean Value Type | Boolean Value Type]] | Use geographical distances as predictors |
| Classify GDM| [[Boolean Value Type | Boolean Value Type]] | Classify areas in GDM by unsupervised classification |
| Number Of Classes | [[Real Value Type | Real Value Type]] | Number of classes in classification |


===== Outputs =====

^ Name ^ Type                                       ^ Description                  ^
| Explained of Model  | [[Real Value Type | Real Value Type]] | Percentage of explanation of model |
| Map  | [[Map Type | Map Type]] | Map of GDM prediction |


===== Group =====

[[BioDinamica | BioDinamica]]

===== Notes =====

First, this functor verifies whether there is a valid input in "Possible Map 1"; if not, it chooses "Possible Map 2" as input. It is a convenient way to provide an alternate categorical map in case an execution pipeline does not return a valid data. If "Possible Map 2" is not set, the functor will return a void output.

===== Internal Name =====

BioDinamica