ee.Filter.date
קל לארגן דפים בעזרת אוספים
אפשר לשמור ולסווג תוכן על סמך ההעדפות שלך.
סינון אוסף לפי טווח תאריכים. תאריכי ההתחלה והסיום יכולים להיות תאריכים או מספרים
(הערך מפורש כאלפיות השנייה מאז 1970-01-01T00:00:00Z) או מחרוזות (למשל '1996-01-01T08:00'). על סמך המאפיין system:time_start.
הפונקציה מחזירה את המסנן שנוצר.
שימוש | החזרות |
---|
ee.Filter.date(start, end) | סינון |
ארגומנט | סוג | פרטים |
---|
start | Date|Number|String | תאריך ההתחלה (כולל). |
end | תאריך|מספר|מחרוזת, אופציונלי | תאריך הסיום (לא כולל). אופציונלי. אם לא מציינים את הטווח, נוצר טווח של אלפית שנייה אחת שמתחיל ב-'start'. |
דוגמאות
עורך הקוד (JavaScript)
// collection.filterDate is preferred.
// Constructed FeatureCollection representing a field site sampled at
// four different dates.
var geom = ee.Geometry.Point([-119.56, 37.67]);
var fc = ee.FeatureCollection([
ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-06-10')}),
ee.Feature(geom, {'prop': 11, 'system:time_start': ee.Date('2021-06-20')}),
ee.Feature(geom, {'prop': 19, 'system:time_start': ee.Date('2021-07-10')}),
ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-07-20')})
]);
// Filter the observations in July 2021.
print('Field site observations collection in July 2021',
fc.filter(ee.Filter.date('2021-07-01', '2021-08-01')));
// Alternative input formats.
var dateRange = ee.DateRange('2021-07-01', '2021-08-01');
print('ee.DateRange as an input',
fc.filter(ee.Filter.date(dateRange)));
print('Numbers (milliseconds since Unix epoch) as an input',
fc.filter(ee.Filter.date(1625875200000, 1626739200001)));
print('ee.Date objects as an input',
fc.filter(ee.Filter.date(ee.Date('2021-07-01'), ee.Date('2021-08-01'))));
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
# collection.filterDate is preferred.
# Constructed FeatureCollection representing a field site sampled at
# four different dates.
geom = ee.Geometry.Point([-119.56, 37.67])
fc = ee.FeatureCollection([
ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-06-10')}),
ee.Feature(geom, {'prop': 11, 'system:time_start': ee.Date('2021-06-20')}),
ee.Feature(geom, {'prop': 19, 'system:time_start': ee.Date('2021-07-10')}),
ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-07-20')})
])
# Filter the observations in July 2021.
print('Field site observations collection in July 2021:')
pprint(fc.filter(ee.Filter.date('2021-07-01', '2021-08-01')).getInfo())
# Alternative input formats.
date_range = ee.DateRange('2021-07-01', '2021-08-01')
pprint(fc.filter(ee.Filter.date(date_range)).getInfo())
print('Numbers (milliseconds since Unix epoch) as an input:')
pprint(fc.filter(ee.Filter.date(1625875200000, 1626739200001)).getInfo())
print('ee.Date objects as an input:')
pprint(
fc.filter(
ee.Filter.date(ee.Date('2021-07-01'), ee.Date('2021-08-01'))
).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\u003e\u003ccode\u003eee.Filter.date\u003c/code\u003e filters a collection by date range based on the \u003ccode\u003esystem:time_start\u003c/code\u003e property.\u003c/p\u003e\n"],["\u003cp\u003eThe start and end dates can be specified as Dates, numbers (milliseconds since 1970-01-01T00:00:00Z), or strings (like 'YYYY-MM-DDTHH:mm').\u003c/p\u003e\n"],["\u003cp\u003eThe end date is exclusive, and if omitted, a 1-millisecond range starting at the start date is used.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eee.Filter.date\u003c/code\u003e returns a filter that can be applied to a collection using the \u003ccode\u003efilter\u003c/code\u003e method.\u003c/p\u003e\n"]]],["The core functionality is filtering a collection based on a date range, using the `system:time_start` property. The `ee.Filter.date(start, end)` method facilitates this, accepting `start` and optional `end` arguments as Dates, numbers (milliseconds since 1970), or strings (e.g., '1996-01-01'). If `end` is omitted, a 1-millisecond range is created. The method returns a filter, allowing users to filter collections. The code shows various ways of using this filter.\n"],null,["# ee.Filter.date\n\n\u003cbr /\u003e\n\nFilter a collection by date range. The start and end may be Dates, numbers\n\n\u003cbr /\u003e\n\n(interpreted as milliseconds since 1970-01-01T00:00:00Z), or strings (such as '1996-01-01T08:00'). Based on 'system:time_start' property.\n\nReturns the constructed filter.\n\n| Usage | Returns |\n|----------------------------------|---------|\n| `ee.Filter.date(start, `*end*`)` | Filter |\n\n| Argument | Type | Details |\n|----------|--------------------------------|-------------------------------------------------------------------------------------------------------------|\n| `start` | Date\\|Number\\|String | The start date (inclusive). |\n| `end` | Date\\|Number\\|String, optional | The end date (exclusive). Optional. If not specified, a 1-millisecond range starting at 'start' is created. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// collection.filterDate is preferred.\n// Constructed FeatureCollection representing a field site sampled at\n// four different dates.\nvar geom = ee.Geometry.Point([-119.56, 37.67]);\nvar fc = ee.FeatureCollection([\n ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-06-10')}),\n ee.Feature(geom, {'prop': 11, 'system:time_start': ee.Date('2021-06-20')}),\n ee.Feature(geom, {'prop': 19, 'system:time_start': ee.Date('2021-07-10')}),\n ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-07-20')})\n]);\n\n// Filter the observations in July 2021.\nprint('Field site observations collection in July 2021',\n fc.filter(ee.Filter.date('2021-07-01', '2021-08-01')));\n\n// Alternative input formats.\nvar dateRange = ee.DateRange('2021-07-01', '2021-08-01');\nprint('ee.DateRange as an input',\n fc.filter(ee.Filter.date(dateRange)));\n\nprint('Numbers (milliseconds since Unix epoch) as an input',\n fc.filter(ee.Filter.date(1625875200000, 1626739200001)));\n\nprint('ee.Date objects as an input',\n fc.filter(ee.Filter.date(ee.Date('2021-07-01'), ee.Date('2021-08-01'))));\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# collection.filterDate is preferred.\n# Constructed FeatureCollection representing a field site sampled at\n# four different dates.\ngeom = ee.Geometry.Point([-119.56, 37.67])\nfc = ee.FeatureCollection([\n ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-06-10')}),\n ee.Feature(geom, {'prop': 11, 'system:time_start': ee.Date('2021-06-20')}),\n ee.Feature(geom, {'prop': 19, 'system:time_start': ee.Date('2021-07-10')}),\n ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-07-20')})\n])\n\n# Filter the observations in July 2021.\nprint('Field site observations collection in July 2021:')\npprint(fc.filter(ee.Filter.date('2021-07-01', '2021-08-01')).getInfo())\n\n# Alternative input formats.\ndate_range = ee.DateRange('2021-07-01', '2021-08-01')\npprint(fc.filter(ee.Filter.date(date_range)).getInfo())\n\nprint('Numbers (milliseconds since Unix epoch) as an input:')\npprint(fc.filter(ee.Filter.date(1625875200000, 1626739200001)).getInfo())\n\nprint('ee.Date objects as an input:')\npprint(\n fc.filter(\n ee.Filter.date(ee.Date('2021-07-01'), ee.Date('2021-08-01'))\n ).getInfo()\n)\n```"]]