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AI-generated Key Takeaways
The Thumbnail class allows you to set parameters for generating thumbnails of images.
The setParams method is used to configure the thumbnail generation process with options like dimensions, region, format, and color adjustments, and returns the ui.Thumbnail instance.
You can control the size, area, and visual appearance of the thumbnail using parameters like dimensions, region, bands, min, max, gain, bias, gamma, palette, and opacity.
It's possible to specify the image format (PNG or JPG) and opacity for the thumbnail.
The version parameter lets you request a specific version of the image or the latest one.
Sets the parameters used to generate the thumbnail.
Returns this thumbnail.
Usage
Returns
Thumbnail.setParams(params)
ui.Thumbnail
Argument
Type
Details
this: ui.thumbnail
ui.Thumbnail
The ui.Thumbnail instance.
params
Object
The parameters used in generating the thumbnail.
dimensions (a number or pair of numbers in format WIDTHxHEIGHT) Maximum dimensions of the thumbnail to render, in pixels. If only one number is passed, it is used as the maximum, and the other dimension is computed by proportional scaling.
region (E,S,W,N or GeoJSON) Geospatial region of the image to render. By default, the whole image.
format (string) Either 'png' or 'jpg'.
bands (comma-separated strings) Comma-delimited list of band names to be mapped to RGB.
min (comma-separated numbers) Value (or one per band) to map onto 00.
max (comma-separated numbers) Value (or one per band) to map onto FF.
gain (comma-separated numbers) Gain (or one per band) to map onto 00-FF.
bias (comma-separated numbers) Offset (or one per band) to map onto 00-FF.
gamma (comma-separated numbers) Gamma correction factor (or one per band)
palette (comma-separated strings) List of CSS-style color strings (single-band previews only).
opacity (number) a number between 0 and 1 for opacity.
version (number) Version number of image (or latest).
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-02-20 UTC."],[],["The `Thumbnail.setParams(params)` method configures thumbnail generation parameters and returns the `ui.Thumbnail`. Parameters include `dimensions` for pixel size, `region` for the geospatial area, `format` ('png' or 'jpg'), and `bands` for RGB mapping. It accepts numerical adjustments like `min`, `max`, `gain`, `bias`, `gamma`, color settings through a `palette`, `opacity`, and `version` controls. The given `ui.thumbnail` instance is modified with these settings.\n"],null,[]]
