ee.ConfusionMatrix
קל לארגן דפים בעזרת אוספים
אפשר לשמור ולסווג תוכן על סמך ההעדפות שלך.
יוצרת מטריצת בלבול. ציר 0 (השורות) של המטריצה מתאים לערכים בפועל, וציר 1 (העמודות) מתאים לערכים החזויים.
| שימוש | החזרות |
|---|
ee.ConfusionMatrix(array, order) | ConfusionMatrix |
| ארגומנט | סוג | פרטים |
|---|
array | אובייקט | מערך דו-ממדי של מספרים שלמים, שמייצג את מטריצת השגיאה. שימו לב: בניגוד ל-constructor של ee.Array, הארגומנט הזה לא יכול לקבל רשימה. |
order | רשימה, ברירת מחדל: null | הגודל והסדר של השורות והעמודות במטריצות לא רציפות או במטריצות שלא מבוססות על אפס. |
דוגמאות
עורך הקוד (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());
הגדרת Python
מידע על Python API ועל שימוש ב-geemap לפיתוח אינטראקטיבי מופיע בדף
Python Environment.
import ee
import geemap.core as geemap
Colab (Python)
from pprint import pprint
# A confusion matrix. Rows correspond to actual values, columns to
# predicted values.
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:')
pprint(ee.ConfusionMatrix(array).getInfo())
# 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, None).order().getInfo())
# 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.
order = [11, 22, 42, 52, 71, 81]
print('Specified row/column labels (specified "order" parameter):',
ee.ConfusionMatrix(array, order).order().getInfo())
אלא אם צוין אחרת, התוכן של דף זה הוא ברישיון Creative Commons Attribution 4.0 ודוגמאות הקוד הן ברישיון Apache 2.0. לפרטים, ניתן לעיין במדיניות האתר Google Developers. Java הוא סימן מסחרי רשום של חברת Oracle ו/או של השותפים העצמאיים שלה.
עדכון אחרון: 2025-07-26 (שעון UTC).
[null,null,["עדכון אחרון: 2025-07-26 (שעון UTC)."],[[["\u003cp\u003eCreates a confusion matrix from a 2D array of integers, where rows represent actual values and columns represent predicted values.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eorder\u003c/code\u003e parameter can be used to specify custom class labels for the rows and columns of the matrix.\u003c/p\u003e\n"],["\u003cp\u003eIf \u003ccode\u003eorder\u003c/code\u003e is not specified, it defaults to a 0-based sequence incrementing by 1.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eee.ConfusionMatrix\u003c/code\u003e object provides methods for analyzing the confusion matrix.\u003c/p\u003e\n"]]],[],null,["# ee.ConfusionMatrix\n\nCreates a confusion matrix. Axis 0 (the rows) of the matrix correspond to the actual values, and Axis 1 (the columns) to the predicted values.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|----------------------------------------|-----------------|\n| `ee.ConfusionMatrix(array, `*order*`)` | ConfusionMatrix |\n\n| Argument | Type | Details |\n|----------|---------------------|-------------------------------------------------------------------------------------------------------------------------------------------------|\n| `array` | Object | A square, 2D array of integers, representing the confusion matrix. Note that unlike the ee.Array constructor, this argument cannot take a list. |\n| `order` | List, default: null | The row and column size and order, for non-contiguous or non-zero based matrices. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// A confusion matrix. Rows correspond to actual values, columns to\n// predicted values.\nvar array = ee.Array([[32, 0, 0, 0, 1, 0],\n [ 0, 5, 0, 0, 1, 0],\n [ 0, 0, 1, 3, 0, 0],\n [ 0, 1, 4, 26, 8, 0],\n [ 0, 0, 0, 7, 15, 0],\n [ 0, 0, 0, 1, 0, 5]]);\nprint('Constructed confusion matrix',\n ee.ConfusionMatrix(array));\n\n// The \"order\" parameter refers to row and column class labels. When\n// unspecified, the class labels are assumed to be a 0-based sequence\n// incrementing by 1 with a length equal to row/column size.\nprint('Default row/column labels (unspecified \"order\" parameter)',\n ee.ConfusionMatrix({array: array, order: null}).order());\n\n// Set the \"order\" parameter when custom class label integers are required. The\n// list of integer value labels should correspond to the matrix axes left to\n// right / top to bottom.\nvar order = [11, 22, 42, 52, 71, 81];\nprint('Specified row/column labels (specified \"order\" parameter)',\n ee.ConfusionMatrix({array: array, order: order}).order());\n```\nPython setup\n\nSee the [Python Environment](/earth-engine/guides/python_install) page for information on the Python API and using\n`geemap` for interactive development. \n\n```python\nimport ee\nimport geemap.core as geemap\n```\n\n### Colab (Python)\n\n```python\nfrom pprint import pprint\n\n# A confusion matrix. Rows correspond to actual values, columns to\n# predicted values.\narray = ee.Array([[32, 0, 0, 0, 1, 0],\n [ 0, 5, 0, 0, 1, 0],\n [ 0, 0, 1, 3, 0, 0],\n [ 0, 1, 4, 26, 8, 0],\n [ 0, 0, 0, 7, 15, 0],\n [ 0, 0, 0, 1, 0, 5]])\nprint('Constructed confusion matrix:')\npprint(ee.ConfusionMatrix(array).getInfo())\n\n# The \"order\" parameter refers to row and column class labels. When\n# unspecified, the class labels are assumed to be a 0-based sequence\n# incrementing by 1 with a length equal to row/column size.\nprint('Default row/column labels (unspecified \"order\" parameter):',\n ee.ConfusionMatrix(array, None).order().getInfo())\n\n# Set the \"order\" parameter when custom class label integers are required. The\n# list of integer value labels should correspond to the matrix axes left to\n# right / top to bottom.\norder = [11, 22, 42, 52, 71, 81]\nprint('Specified row/column labels (specified \"order\" parameter):',\n ee.ConfusionMatrix(array, order).order().getInfo())\n```"]]
