Pengumuman: Semua project nonkomersial yang terdaftar untuk menggunakan Earth Engine sebelum
15 April 2025 harus
memverifikasi kelayakan nonkomersial untuk mempertahankan akses Earth Engine.
ee.DateRange.isEmpty
Tetap teratur dengan koleksi
Simpan dan kategorikan konten berdasarkan preferensi Anda.
Menampilkan benar (true) jika DateRange ini tidak berisi tanggal (yaitu start >= end).
| Penggunaan | Hasil |
|---|
DateRange.isEmpty() | Boolean |
| Argumen | Jenis | Detail |
|---|
ini: dateRange | DateRange | |
Contoh
Code Editor (JavaScript)
// A series of ee.DateRange objects.
var dateRange1 = ee.DateRange('2017-06-24', '2017-07-24');
var dateRange2 = ee.DateRange('2017-07-24', '2017-06-24');
var dateRange3 = ee.DateRange('2017-07-24', '2017-07-24');
// Determine if the ee.DateRange is empty.
print('Is dateRange1 empty?', dateRange1.isEmpty());
print('Is dateRange2 empty?', dateRange2.isEmpty());
print('Is dateRange3 empty?', dateRange3.isEmpty());
Penyiapan Python
Lihat halaman
Lingkungan Python untuk mengetahui informasi tentang Python API dan penggunaan
geemap untuk pengembangan interaktif.
import ee
import geemap.core as geemap
Colab (Python)
# A series of ee.DateRange objects.
date_range_1 = ee.DateRange('2017-06-24', '2017-07-24')
date_range_2 = ee.DateRange('2017-07-24', '2017-06-24')
date_range_3 = ee.DateRange('2017-07-24', '2017-07-24')
# Determine if the ee.DateRange is empty.
display('Is date_range_1 empty?', date_range_1.isEmpty())
display('Is date_range_2 empty?', date_range_2.isEmpty())
display('Is date_range_3 empty?', date_range_3.isEmpty())
Kecuali dinyatakan lain, konten di halaman ini dilisensikan berdasarkan Lisensi Creative Commons Attribution 4.0, sedangkan contoh kode dilisensikan berdasarkan Lisensi Apache 2.0. Untuk mengetahui informasi selengkapnya, lihat Kebijakan Situs Google Developers. Java adalah merek dagang terdaftar dari Oracle dan/atau afiliasinya.
Terakhir diperbarui pada 2025-07-26 UTC.
[null,null,["Terakhir diperbarui pada 2025-07-26 UTC."],[[["\u003cp\u003eThe \u003ccode\u003eDateRange.isEmpty()\u003c/code\u003e method returns \u003ccode\u003etrue\u003c/code\u003e if the DateRange object represents an empty time interval (i.e., the start date is equal to or later than the end date).\u003c/p\u003e\n"],["\u003cp\u003eIt can be applied to any \u003ccode\u003eee.DateRange\u003c/code\u003e object to check its validity.\u003c/p\u003e\n"],["\u003cp\u003eIf the start date is earlier than the end date, the DateRange is considered valid and the method returns \u003ccode\u003efalse\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eWhen the start and end dates are the same, the \u003ccode\u003eDateRange.isEmpty()\u003c/code\u003e method will also return \u003ccode\u003etrue\u003c/code\u003e, indicating an empty or instantaneous range.\u003c/p\u003e\n"]]],["The `isEmpty()` method checks if a `DateRange` contains no dates. It returns a boolean value: `true` if the start date is greater than or equal to the end date, `false` otherwise. It operates on a `DateRange` object. Examples demonstrate creating `DateRange` objects and using `isEmpty()` to check their status, outputting the boolean result in both Javascript and python.\n"],null,["# ee.DateRange.isEmpty\n\nReturns true if this DateRange contains no dates (i.e. start \\\u003e= end).\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|-----------------------|---------|\n| DateRange.isEmpty`()` | Boolean |\n\n| Argument | Type | Details |\n|-------------------|-----------|---------|\n| this: `dateRange` | DateRange | |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// A series of ee.DateRange objects.\nvar dateRange1 = ee.DateRange('2017-06-24', '2017-07-24');\nvar dateRange2 = ee.DateRange('2017-07-24', '2017-06-24');\nvar dateRange3 = ee.DateRange('2017-07-24', '2017-07-24');\n\n// Determine if the ee.DateRange is empty.\nprint('Is dateRange1 empty?', dateRange1.isEmpty());\nprint('Is dateRange2 empty?', dateRange2.isEmpty());\nprint('Is dateRange3 empty?', dateRange3.isEmpty());\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\n# A series of ee.DateRange objects.\ndate_range_1 = ee.DateRange('2017-06-24', '2017-07-24')\ndate_range_2 = ee.DateRange('2017-07-24', '2017-06-24')\ndate_range_3 = ee.DateRange('2017-07-24', '2017-07-24')\n\n# Determine if the ee.DateRange is empty.\ndisplay('Is date_range_1 empty?', date_range_1.isEmpty())\ndisplay('Is date_range_2 empty?', date_range_2.isEmpty())\ndisplay('Is date_range_3 empty?', date_range_3.isEmpty())\n```"]]
