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REST Resource: projects.thumbnails
使用集合让一切井井有条
根据您的偏好保存内容并对其进行分类。
资源:缩略图
字段 |
name |
string
表示缩略图的资源名称,格式为“projects/*/thumbnails/**”(例如“projects/earthengine-legacy/thumbnails/”)。
|
expression |
object (Expression )
要计算的表达式。必须计算为 Image。
|
fileFormat |
enum (ImageFileFormat )
用于生成最终图片的输出编码。
|
bandIds[] |
string
如果存在,则指定要从评估 expression 的结果中选择的一组特定频段。如果未指定,则系统会选择 expression 产生的所有频段。
|
visualizationOptions |
object (VisualizationOptions )
一组可视化选项(如果有),用于生成数据的 8 位 RGB 可视化图表。
|
grid |
object (PixelGrid )
一个可选的像素网格,用于描述由 expression 计算的图片的重新投影和剪裁方式。
|
filenamePrefix |
string
仅在 fileFormat 为 ZIPPED_GEO_TIFF 或 ZIPPED_GEO_TIFF_PER_BAND 时使用。
|
方法 |
|
创建一个 ID,用于呈现“缩略图”图片。 |
|
计算显示计算结果的图片。 |
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最后更新时间 (UTC):2025-07-25。
[null,null,["最后更新时间 (UTC):2025-07-25。"],[[["\u003cp\u003eThumbnails are representations of images, generated by evaluating an expression that results in an image.\u003c/p\u003e\n"],["\u003cp\u003eThey can be customized with visualization options, band selections, and reprojection/clipping using a pixel grid.\u003c/p\u003e\n"],["\u003cp\u003eThumbnail creation involves providing parameters like expression, file format, and optionally visualization options, band IDs, grid, and filename prefix.\u003c/p\u003e\n"],["\u003cp\u003eUsers can initiate thumbnail creation and retrieve image data using designated API methods.\u003c/p\u003e\n"]]],["Thumbnails are created with a name, an expression that evaluates to an image, and a specified file format. Band IDs can be selected from the expression's result, and visualization options can be applied for 8-bit RGB output. A pixel grid can define image reprojection and clipping. A filename prefix is used for ZIPPED_GEO_TIFF output. The `create` method generates a thumbnail ID, and `getPixels` computes and renders the image.\n"],null,["# REST Resource: projects.thumbnails\n\nResource: Thumbnail\n-------------------\n\nInformation about a thumbnail.\n\n| JSON representation |\n|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| ``` { \"name\": string, \"expression\": { object (/earth-engine/reference/rest/v1/Expression) }, \"fileFormat\": enum (/earth-engine/reference/rest/v1/ImageFileFormat), \"bandIds\": [ string ], \"visualizationOptions\": { object (/earth-engine/reference/rest/v1/VisualizationOptions) }, \"grid\": { object (/earth-engine/reference/rest/v1/PixelGrid) }, \"filenamePrefix\": string } ``` |\n\n| Fields ||\n|------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `name` | `string` The resource name representing the thumbnail, of the form \"projects/\\*/thumbnails/\\*\\*\" (e.g. \"projects/earthengine-legacy/thumbnails/\"). |\n| `expression` | `object (`[Expression](/earth-engine/reference/rest/v1/Expression)`)` The expression to compute. Must evaluate to an Image. |\n| `fileFormat` | `enum (`[ImageFileFormat](/earth-engine/reference/rest/v1/ImageFileFormat)`)` The output encoding in which to generate the resulting image. |\n| `bandIds[]` | `string` If present, specifies a specific set of bands that will be selected from the result of evaluating `expression`. If not present, all bands resulting from `expression` will be selected. |\n| `visualizationOptions` | `object (`[VisualizationOptions](/earth-engine/reference/rest/v1/VisualizationOptions)`)` If present, a set of visualization options to apply to produce an 8-bit RGB visualization of the data. |\n| `grid` | `object (`[PixelGrid](/earth-engine/reference/rest/v1/PixelGrid)`)` An optional pixel grid describing how the image computed by `expression` is reprojected and clipped. |\n| `filenamePrefix` | `string` Only used when fileFormat is ZIPPED_GEO_TIFF or ZIPPED_GEO_TIFF_PER_BAND. |\n\n| Methods ------- ||\n|--------------------------------------------------------------------------------|---------------------------------------------------------------|\n| ### [create](/earth-engine/reference/rest/v1/projects.thumbnails/create) | Creates an ID that can be used to render a \"thumbnail\" image. |\n| ### [getPixels](/earth-engine/reference/rest/v1/projects.thumbnails/getPixels) | Computes an image showing the result of a computation. |"]]