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.Projection
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。
指定されたベース座標系と、投影された座標とベース間の指定された変換を含む Projection を返します。変換が指定されていない場合は、恒等変換が想定されます。
用途 | 戻り値 |
---|
ee.Projection(crs, transform, transformWkt) | 予測 |
引数 | タイプ | 詳細 |
---|
crs | オブジェクト | この Projection の基準座標参照系。よく知られている機関コード(例: 'EPSG:4326')または WKT 文字列。 |
transform | リスト、デフォルト: null | 投影座標と基本座標系の間の変換。行優先順の 2x3 アフィン変換行列として指定します([xScale, xShearing, xTranslation, yShearing, yScale, yTranslation])。これと transformWkt の両方を指定することはできません。 |
transformWkt | 文字列、デフォルト: null | 投影座標とベース座標系の間の変換。WKT 文字列として指定します。これと「transform」の両方を指定することはできません。 |
例
コードエディタ(JavaScript)
// Construct projections.
// Printing the projection will show the EPSG code if it is a direct match.
//
// e.g. You will see this for the string 'EPSG:3857'
// type: Projection
// crs: EPSG:3857
// transform: [1,0,0,0,1,0]
print(ee.Projection('EPSG:3857')); // https://epsg.io/3857
print(ee.Projection('EPSG:4326')); // https://epsg.io/4326
// WKT projection description for https://epsg.io/27572
var proj = ee.Projection(
'PROJCS["NTF (Paris) / Lambert zone II", ' +
' GEOGCS["NTF (Paris)", ' +
' DATUM["Nouvelle Triangulation Francaise (Paris)", ' +
' SPHEROID["Clarke 1880 (IGN)", 6378249.2, 293.4660212936269,'+
' AUTHORITY["EPSG","7011"]], ' +
' AUTHORITY["EPSG","6807"]], ' +
' PRIMEM["Paris", 2.5969213, AUTHORITY["EPSG","8903"]], ' +
' UNIT["grade", 0.015707963267948967], ' +
' AXIS["Geodetic longitude", EAST], ' +
' AXIS["Geodetic latitude", NORTH], ' +
' AUTHORITY["EPSG","4807"]], ' +
' PROJECTION["Lambert_Conformal_Conic_1SP", AUTHORITY["EPSG","9801"]], ' +
' PARAMETER["central_meridian", 0.0], ' +
' PARAMETER["latitude_of_origin", 52.0], ' +
' PARAMETER["scale_factor", 0.99987742], ' +
' PARAMETER["false_easting", 600000.0], ' +
' PARAMETER["false_northing", 2200000.0], ' +
' UNIT["m", 1.0], ' +
' AXIS["Easting", EAST], ' +
' AXIS["Northing", NORTH], ' +
' AUTHORITY["EPSG","27572"]]');
print(proj); // crs: EPSG:27572
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)
# Construct projections.
# Printing the projection will show the EPSG code if it is a direct match.
#
# e.g. You will see this for the string 'EPSG:3857'
# type: Projection
# crs: EPSG:3857
# transform: [1,0,0,0,1,0]
print(ee.Projection('EPSG:3857').getInfo()) # https://epsg.io/3857
print(ee.Projection('EPSG:4326').getInfo()) # https://epsg.io/4326
# WKT projection description for https://epsg.io/27572
proj = ee.Projection(
'PROJCS["NTF (Paris) / Lambert zone II", ' +
' GEOGCS["NTF (Paris)", ' +
' DATUM["Nouvelle Triangulation Francaise (Paris)", ' +
' SPHEROID["Clarke 1880 (IGN)", 6378249.2, 293.4660212936269,'+
' AUTHORITY["EPSG","7011"]], ' +
' AUTHORITY["EPSG","6807"]], ' +
' PRIMEM["Paris", 2.5969213, AUTHORITY["EPSG","8903"]], ' +
' UNIT["grade", 0.015707963267948967], ' +
' AXIS["Geodetic longitude", EAST], ' +
' AXIS["Geodetic latitude", NORTH], ' +
' AUTHORITY["EPSG","4807"]], ' +
' PROJECTION["Lambert_Conformal_Conic_1SP", AUTHORITY["EPSG","9801"]], ' +
' PARAMETER["central_meridian", 0.0], ' +
' PARAMETER["latitude_of_origin", 52.0], ' +
' PARAMETER["scale_factor", 0.99987742], ' +
' PARAMETER["false_easting", 600000.0], ' +
' PARAMETER["false_northing", 2200000.0], ' +
' UNIT["m", 1.0], ' +
' AXIS["Easting", EAST], ' +
' AXIS["Northing", NORTH], ' +
' AUTHORITY["EPSG","27572"]]')
print(proj.getInfo()) # crs: EPSG:27572
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.Projection\u003c/code\u003e returns a Projection object with a defined base coordinate system and an optional transform.\u003c/p\u003e\n"],["\u003cp\u003eThe base coordinate system (\u003ccode\u003ecrs\u003c/code\u003e) can be specified using an authority code (e.g., 'EPSG:4326') or a WKT string.\u003c/p\u003e\n"],["\u003cp\u003eThe transform between projected and base coordinates can be defined by a 2x3 affine transform matrix (\u003ccode\u003etransform\u003c/code\u003e) or a WKT string (\u003ccode\u003etransformWkt\u003c/code\u003e).\u003c/p\u003e\n"],["\u003cp\u003eIf no transform is provided, the identity transform is used, implying a direct mapping between projected and base coordinates.\u003c/p\u003e\n"]]],[],null,["# ee.Projection\n\nReturns a Projection with the given base coordinate system and the given transform between projected coordinates and the base. If no transform is specified, the identity transform is assumed.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|--------------------------------------------------------|------------|\n| `ee.Projection(crs, `*transform* `, `*transformWkt*`)` | Projection |\n\n| Argument | Type | Details |\n|----------------|-----------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `crs` | Object | The base coordinate reference system of this Projection, given as a well-known authority code (e.g., 'EPSG:4326') or a WKT string. |\n| `transform` | List, default: null | The transform between projected coordinates and the base coordinate system, specified as a 2x3 affine transform matrix in row-major order: \\[xScale, xShearing, xTranslation, yShearing, yScale, yTranslation\\]. May not specify both this and 'transformWkt'. |\n| `transformWkt` | String, default: null | The transform between projected coordinates and the base coordinate system, specified as a WKT string. May not specify both this and 'transform'. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// Construct projections.\n// Printing the projection will show the EPSG code if it is a direct match.\n//\n// e.g. You will see this for the string 'EPSG:3857'\n// type: Projection\n// crs: EPSG:3857\n// transform: [1,0,0,0,1,0]\n\nprint(ee.Projection('EPSG:3857')); // https://epsg.io/3857\nprint(ee.Projection('EPSG:4326')); // https://epsg.io/4326\n\n// WKT projection description for https://epsg.io/27572\nvar proj = ee.Projection(\n 'PROJCS[\"NTF (Paris) / Lambert zone II\", ' +\n ' GEOGCS[\"NTF (Paris)\", ' +\n ' DATUM[\"Nouvelle Triangulation Francaise (Paris)\", ' +\n ' SPHEROID[\"Clarke 1880 (IGN)\", 6378249.2, 293.4660212936269,'+\n ' AUTHORITY[\"EPSG\",\"7011\"]], ' +\n ' AUTHORITY[\"EPSG\",\"6807\"]], ' +\n ' PRIMEM[\"Paris\", 2.5969213, AUTHORITY[\"EPSG\",\"8903\"]], ' +\n ' UNIT[\"grade\", 0.015707963267948967], ' +\n ' AXIS[\"Geodetic longitude\", EAST], ' +\n ' AXIS[\"Geodetic latitude\", NORTH], ' +\n ' AUTHORITY[\"EPSG\",\"4807\"]], ' +\n ' PROJECTION[\"Lambert_Conformal_Conic_1SP\", AUTHORITY[\"EPSG\",\"9801\"]], ' +\n ' PARAMETER[\"central_meridian\", 0.0], ' +\n ' PARAMETER[\"latitude_of_origin\", 52.0], ' +\n ' PARAMETER[\"scale_factor\", 0.99987742], ' +\n ' PARAMETER[\"false_easting\", 600000.0], ' +\n ' PARAMETER[\"false_northing\", 2200000.0], ' +\n ' UNIT[\"m\", 1.0], ' +\n ' AXIS[\"Easting\", EAST], ' +\n ' AXIS[\"Northing\", NORTH], ' +\n ' AUTHORITY[\"EPSG\",\"27572\"]]');\nprint(proj); // crs: EPSG:27572\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# Construct projections.\n# Printing the projection will show the EPSG code if it is a direct match.\n#\n# e.g. You will see this for the string 'EPSG:3857'\n# type: Projection\n# crs: EPSG:3857\n# transform: [1,0,0,0,1,0]\n\nprint(ee.Projection('EPSG:3857').getInfo()) # https://epsg.io/3857\nprint(ee.Projection('EPSG:4326').getInfo()) # https://epsg.io/4326\n\n# WKT projection description for https://epsg.io/27572\nproj = ee.Projection(\n 'PROJCS[\"NTF (Paris) / Lambert zone II\", ' +\n ' GEOGCS[\"NTF (Paris)\", ' +\n ' DATUM[\"Nouvelle Triangulation Francaise (Paris)\", ' +\n ' SPHEROID[\"Clarke 1880 (IGN)\", 6378249.2, 293.4660212936269,'+\n ' AUTHORITY[\"EPSG\",\"7011\"]], ' +\n ' AUTHORITY[\"EPSG\",\"6807\"]], ' +\n ' PRIMEM[\"Paris\", 2.5969213, AUTHORITY[\"EPSG\",\"8903\"]], ' +\n ' UNIT[\"grade\", 0.015707963267948967], ' +\n ' AXIS[\"Geodetic longitude\", EAST], ' +\n ' AXIS[\"Geodetic latitude\", NORTH], ' +\n ' AUTHORITY[\"EPSG\",\"4807\"]], ' +\n ' PROJECTION[\"Lambert_Conformal_Conic_1SP\", AUTHORITY[\"EPSG\",\"9801\"]], ' +\n ' PARAMETER[\"central_meridian\", 0.0], ' +\n ' PARAMETER[\"latitude_of_origin\", 52.0], ' +\n ' PARAMETER[\"scale_factor\", 0.99987742], ' +\n ' PARAMETER[\"false_easting\", 600000.0], ' +\n ' PARAMETER[\"false_northing\", 2200000.0], ' +\n ' UNIT[\"m\", 1.0], ' +\n ' AXIS[\"Easting\", EAST], ' +\n ' AXIS[\"Northing\", NORTH], ' +\n ' AUTHORITY[\"EPSG\",\"27572\"]]')\nprint(proj.getInfo()) # crs: EPSG:27572\n```"]]