sits (version 1.1.0)

sits_formula_linear: Define a linear formula for classification models

Description

Provides a symbolic description of a fitting model. Tells the model to do a linear transformation of the input values. The `predictors_index` parameter informs the positions of fields corresponding to formula independent variables. If no value is given, that all fields will be used as predictors.

Usage

sits_formula_linear(predictors_index = -2:0)

Value

A function that computes a valid formula using a linear function.

Arguments

predictors_index

Index of the valid columns whose names are used to compose formula (default: -2:0).

Author

Gilberto Camara,

Alexandre Ywata de Carvalho,

Rolf Simoes,

Examples

if (sits_run_examples()) {
    # Example of training a model for time series classification
    # Retrieve the samples for Mato Grosso
    # train an SVM model
    ml_model <- sits_train(samples_modis_4bands,
        ml_method = sits_svm(formula = sits_formula_logref()))
    # select the bands to classify the point
    sample_bands <- sits_bands(samples_modis_4bands)
    point_4bands <- sits_select(point_mt_6bands, bands = sample_bands)
    # classify the point
    point_class <- sits_classify(point_4bands, ml_model)
    plot(point_class)
}