sits_pred_normalize: Normalize predictor values

In sits: Satellite Image Time Series Analysis for Earth Observation Data Cubes

Normalize predictor values

Description

Most machine learning algorithms require data to be normalized. This applies to the "SVM" method and to all deep learning ones. To normalize the predictors, it is required that the statistics per band for each sample have been obtained by the "sits_stats" function.

Usage

sits_pred_normalize(pred, stats)

Arguments

pred	X-Y predictors: a data.frame with one row per sample.
stats	Values of time series for Q02 and Q98 of the data (list of numeric values with two elements)

Value

A data.frame with normalized predictor values

Note

Please refer to the sits documentation available in <https://e-sensing.github.io/sitsbook/> for detailed examples.

Author(s)

Gilberto Camara, [e-mail]

Examples

if (sits_run_examples()) {
    stats <- sits_stats(samples_modis_ndvi)
    pred <- sits_predictors(samples_modis_ndvi)
    pred_norm <- sits_pred_normalize(pred, stats)
}

sits documentation built on Sept. 11, 2024, 6:36 p.m.