お知らせ:
2025 年 4 月 15 日より前に Earth Engine の使用を登録したすべての非商用プロジェクトは、Earth Engine へのアクセスを維持するために
非商用目的での利用資格を確認する必要があります。
ee.Filter.date
コレクションでコンテンツを整理
必要に応じて、コンテンツの保存と分類を行います。
コレクションを期間でフィルタします。開始と終了には、日付または数値を指定できます
(1970-01-01T00:00:00Z からのミリ秒数として解釈されます)または文字列(「1996-01-01T08:00」など)。「system:time_start」プロパティに基づきます。
作成されたフィルタを返します。
用途 | 戻り値 |
---|
ee.Filter.date(start, end) | フィルタ |
引数 | タイプ | 詳細 |
---|
start | Date|Number|String | 開始日(指定した日も期間に含む)。 |
end | Date|Number|String(省略可) | 終了日(この日は含まれません)。省略可。指定しない場合、'start' から始まる 1 ミリ秒の範囲が作成されます。 |
例
コードエディタ(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'))));
Python の設定
Python API とインタラクティブな開発での geemap
の使用については、
Python 環境のページをご覧ください。
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()
)
特に記載のない限り、このページのコンテンツはクリエイティブ・コモンズの表示 4.0 ライセンスにより使用許諾されます。コードサンプルは Apache 2.0 ライセンスにより使用許諾されます。詳しくは、Google Developers サイトのポリシーをご覧ください。Java は Oracle および関連会社の登録商標です。
最終更新日 2025-07-26 UTC。
[null,null,["最終更新日 2025-07-26 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```"]]