african

South African War Boer War Maps

The timestamp is only as accurate as the clock in the camera, and it might be absolutely incorrect. We are aware of multiple artifacts and inconsistencies in the version of AfSoilGrids250m predictions released on February 10th 2015 and are functioning on updating maps in periods of much less than three months. The accuracy of the maps was assessed using 5-fold cross-validation, with model re-fitting, and reported making use of RMSE and % variance explained. The latter is defined as 1-MSE/sigma-square, exactly where MSE is the imply square error at cross-validation points and sigma-square is the variance of the target variable....