flexsdm: Overview of Pre-modeling functions24 days ago
Introduction | Installation | Project Directory Setup | Data, species occurrence and background data | Geographic region | Calibration area | 1. Buffer | 2. Minimum convex polygon | 3. Buffered minimum convex polygon | 4. Mask | Reducing collinearity among the predictors | Environmental predictors | 1. Pearson correlation | 1. Stephenson, N. 1998. Actual evapotranspiration and deficit: biologically meaningful correlates of vegetation distribution across spatial scales. Journal of biogeography 25:855–870. | 2. Woodward, F. I., M. R. Lomas, and C. K. Kelly. 2004. Global climate and the distribution of plant biomes. Philosophical transactions of the Royal Society of London. Series B, Biological sciences 359:1465–1476. | 2. Variance inflation factor | 3. Principal component analysis | 4. Factorial analysis | 5. Comments | Data filtering | Environmental filtering | Geographical filtering | Data partitioning | 1. Conventional data partitioning methods (part_random) | 2. Spatial band cross-validation (part_sband) | 3. Spatial block cross-validation (part_sblock) | 4. Environmental and spatial cross-validation (part_senv) | Background and pseudo-absence sampling | 1. Sample background | 2. Sample pseudo-absences | Extracting environmental values
flexsdm 1.4.2Santiago J.E. Velazco v01_pre_modeling.Rmd