[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-07-13 UTC."],[[["\u003cp\u003e\u003ccode\u003eImageCollection.toDictionary()\u003c/code\u003e extracts properties from an ImageCollection and returns them as an ee.Dictionary object.\u003c/p\u003e\n"],["\u003cp\u003eYou can specify a list of properties to extract, or by default, it extracts all non-system properties.\u003c/p\u003e\n"],["\u003cp\u003eThe returned dictionary contains property keys and their corresponding values.\u003c/p\u003e\n"],["\u003cp\u003eFurther processing might require casting values to specific data types using methods like \u003ccode\u003egetString()\u003c/code\u003e, \u003ccode\u003egetNumber()\u003c/code\u003e, or \u003ccode\u003egetArray()\u003c/code\u003e.\u003c/p\u003e\n"]]],["The `ImageCollection.toDictionary()` method extracts properties from a feature, returning them as a dictionary. You must provide a list of `properties`; otherwise, it will default to all non-system properties. Properties can be added to an image collection with `set()`. Individual property values can be retrieved using `get()`, `getString()`, `getNumber()`, or `getArray()`, and then must be cast into the appropriate data type.\n"],null,["# ee.ImageCollection.toDictionary\n\nExtract properties from a feature as a dictionary.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|------------------------------------------------|------------|\n| ImageCollection.toDictionary`(`*properties*`)` | Dictionary |\n\n| Argument | Type | Details |\n|-----------------|---------------------|---------------------------------------------------------------------------|\n| this: `element` | Element | The feature to extract the property from. |\n| `properties` | List, default: null | The list of properties to extract. Defaults to all non-system properties. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// A contrived, empty image collection for simple demonstration.\nvar col = ee.ImageCollection([]);\nprint('Collection without properties', col);\n\n// Set collection properties using a dictionary.\ncol = col.set({\n project_name: 'biomass_tracking',\n project_id: 3,\n plot_ids: ee.Array([7, 11, 20])\n});\n\n// Set collection properties using a series of key-value pairs.\ncol = col.set('project_year', 2018,\n 'rgb_vis', 'false_color');\n\nprint('Collection with properties', col);\n\n// Get a dictionary of collection property keys and values.\nprint('Property keys and values (ee.Dictionary)', col.toDictionary());\n\n// Get the value of a collection property. To use the result of\n// ee.ImageCollection.get in further computation, you need to cast it to the\n// appropriate class, for example, ee.Number(result) or ee.String(result).\nprint('Project ID (ambiguous object)', col.get('project_id'));\n\n// Get the value of a string collection property as an ee.String object.\nprint('Project name (ee.String)', col.getString('project_name'));\n\n// Get the value of a numeric collection property as an ee.Number object.\nprint('Project year (ee.Number)', col.getNumber('project_year'));\n\n// Get the value of an ee.Array collection property as an ee.Array object.\nprint('Plot IDs (ee.Array)', col.getArray('plot_ids'));\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 contrived, empty image collection for simple demonstration.\ncol = ee.ImageCollection([])\nprint('Collection without properties:', col.getInfo())\n\n# Set collection properties using a dictionary.\ncol = col.set({\n 'project_name': 'biomass_tracking',\n 'project_id': 3,\n 'plot_ids': ee.Array([7, 11, 20])\n})\n\n# Set collection properties using a series of key-value pairs.\ncol = col.set('project_year', 2018,\n 'rgb_vis', 'false_color')\n\nprint('Collection with properties:', col.getInfo())\n\n# Get a dictionary of collection property keys and values.\nprint('Property keys and values (ee.Dictionary):', col.toDictionary().getInfo())\n\n# Get the value of a collection property. To use the result of\n# ee.ImageCollection.get in further computation, you need to cast it to the\n# appropriate class, for example, ee.Number(result) or ee.String(result).\nprint('Project ID (ambiguous object):', col.get('project_id').getInfo())\n\n# Get the value of a string collection property as an ee.String object.\nprint('Project name (ee.String):', col.getString('project_name').getInfo())\n\n# Get the value of a numeric collection property as an ee.Number object.\nprint('Project year (ee.Number):', col.getNumber('project_year').getInfo())\n\n# Get the value of an ee.Array collection property as an ee.Array object.\nprint('Plot IDs (ee.Array):', col.getArray('plot_ids').getInfo())\n```"]]
