Creates a confusion matrix. Axis 0 (the rows) of the matrix correspond to the actual values, and Axis 1 (the columns) to the predicted values.
| Usage | Returns |
|---|---|
ee.ConfusionMatrix(array, order) | ConfusionMatrix |
| Argument | Type | Details |
|---|---|---|
array | Object | A square, 2D array of integers, representing the confusion matrix. |
order | List, default: null | The row and column size and order, for non-contiguous or non-zero based matrices. |
Examples
Code Editor (JavaScript)
// A confusion matrix. Rows correspond to actual values, columns to
// predicted values.
var array = ee.Array([[32, 0, 0, 0, 1, 0],
[ 0, 5, 0, 0, 1, 0],
[ 0, 0, 1, 3, 0, 0],
[ 0, 1, 4, 26, 8, 0],
[ 0, 0, 0, 7, 15, 0],
[ 0, 0, 0, 1, 0, 5]]);
print('Constructed confusion matrix',
ee.ConfusionMatrix(array));
// The "order" parameter refers to row and column class labels. When
// unspecified, the class labels are assumed to be a 0-based sequence
// incrementing by 1 with a length equal to row/column size.
print('Default row/column labels (unspecified "order" parameter)',
ee.ConfusionMatrix({array: array, order: null}).order());
// Set the "order" parameter when custom class label integers are required. The
// list of integer value labels should correspond to the matrix axes left to
// right / top to bottom.
var order = [11, 22, 42, 52, 71, 81];
print('Specified row/column labels (specified "order" parameter)',
ee.ConfusionMatrix({array: array, order: order}).order());