backwardDifferenceTable method
Computes the backward differences table and stores the results in a RealMatrix object.
Implementation
RealMatrix backwardDifferenceTable() {
final size = nodes.length;
final table = List<List<double>>.generate(
size,
(_) => List<double>.generate(size, (_) => 0, growable: false),
growable: false,
);
// Initializing the column
var index = 0;
for (final node in nodes) {
table[index++].first = node.y;
}
// Backward difference table
for (var i = 1; i < size; i++) {
for (var j = size - 1; j >= i; j--) {
table[j][i] = table[j][i - 1] - table[j - 1][i - 1];
}
}
return RealMatrix.fromData(
columns: size,
rows: size,
data: table,
);
}