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Creates a subarray by slicing out each position along the given axis from the 'start' (inclusive) to 'end' (exclusive) by increments of 'step'. The result will have as many dimensions as the input, and the same length in all directions except the slicing axis, where the length will be the number of positions from 'start' to 'end' by 'step' that are in range of the input array's length along 'axis'. This means the result can be length 0 along the given axis if start=end, or if the start or end values are entirely out of range.
Usage
Returns
Array.slice(axis,start,end,step)
Array
Argument
Type
Details
this:array
Array
Array to slice.
axis
Integer, default: 0
The axis to slice on.
start
Integer, default: 0
The coordinate of the first slice (inclusive) along 'axis'. Negative numbers are used to position the start of slicing relative to the end of the array, where -1 starts at the last position on the axis, -2 starts at the next to last position, etc.
end
Integer, default: null
The coordinate (exclusive) at which to stop taking slices. By default this will be the length of the given axis. Negative numbers are used to position the end of slicing relative to the end of the array, where -1 will exclude the last position, -2 will exclude the last two positions, etc.
step
Integer, default: 1
The separation between slices along 'axis'; a slice will be taken at each whole multiple of 'step' from 'start' (inclusive) to 'end' (exclusive). Must be positive.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2023-10-06 UTC."],[[["\u003cp\u003e\u003ccode\u003eArray.slice()\u003c/code\u003e extracts a subarray from an input array along a specified axis, similar to slicing in Python.\u003c/p\u003e\n"],["\u003cp\u003eIt uses \u003ccode\u003estart\u003c/code\u003e, \u003ccode\u003eend\u003c/code\u003e, and \u003ccode\u003estep\u003c/code\u003e parameters to define the portion of the array to extract, with negative indices referencing from the end.\u003c/p\u003e\n"],["\u003cp\u003eThe resulting subarray retains the original dimensions except along the sliced axis, where its length depends on the slice parameters.\u003c/p\u003e\n"],["\u003cp\u003eIf the slice parameters result in no elements being selected, an empty array is returned.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eArray.slice()\u003c/code\u003e can be used on multi-dimensional arrays by specifying the axis to slice along.\u003c/p\u003e\n"]]],[],null,["# ee.Array.slice\n\nCreates a subarray by slicing out each position along the given axis from the 'start' (inclusive) to 'end' (exclusive) by increments of 'step'. The result will have as many dimensions as the input, and the same length in all directions except the slicing axis, where the length will be the number of positions from 'start' to 'end' by 'step' that are in range of the input array's length along 'axis'. This means the result can be length 0 along the given axis if start=end, or if the start or end values are entirely out of range.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|----------------------------------------------------------|---------|\n| Array.slice`(`*axis* `, `*start* `, `*end* `, `*step*`)` | Array |\n\n| Argument | Type | Details |\n|---------------|------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| this: `array` | Array | Array to slice. |\n| `axis` | Integer, default: 0 | The axis to slice on. |\n| `start` | Integer, default: 0 | The coordinate of the first slice (inclusive) along 'axis'. Negative numbers are used to position the start of slicing relative to the end of the array, where -1 starts at the last position on the axis, -2 starts at the next to last position, etc. |\n| `end` | Integer, default: null | The coordinate (exclusive) at which to stop taking slices. By default this will be the length of the given axis. Negative numbers are used to position the end of slicing relative to the end of the array, where -1 will exclude the last position, -2 will exclude the last two positions, etc. |\n| `step` | Integer, default: 1 | The separation between slices along 'axis'; a slice will be taken at each whole multiple of 'step' from 'start' (inclusive) to 'end' (exclusive). Must be positive. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\nvar array1x6 = ee.Array([1, 2, 3, 4, 5, 6]);\nprint(array1x6.slice()); // [1,2,3,4,5,6]\nprint(array1x6.slice(0)); // [1,2,3,4,5,6]\nprint(array1x6.slice(0, 0, 6, 1)); // [1,2,3,4,5,6]\nprint(array1x6.slice(0, 0, 10, 1)); // [1,2,3,4,5,6]\n\nprint(array1x6.slice(0, 2)); // [3,4,5,6]\nprint(array1x6.slice(0, 5)); // [6]\nprint(array1x6.slice(0, 6)); // []\nprint(array1x6.slice(0, 0, 2)); // [1,2]\nprint(array1x6.slice(0, 0, 0)); // []\n\n// Negative start and end.\nprint(array1x6.slice(0, 0, -3)); // [1,2,3]\nprint(array1x6.slice(0, -2, 6)); // [5,6]\n\nprint(array1x6.slice(0, 0, 6, 2)); // [1,3,5]\nprint(array1x6.slice(0, 0, 6, 3)); // [1,4]\nprint(array1x6.slice(0, 0, 6, 4)); // [1,5]\nprint(array1x6.slice(0, 0, 6, 6)); // [1]\n\nprint(array1x6.slice(0, 2, 6, 2)); // [3,5]\n\nvar array3x2 = ee.Array([[1, 2], [3, 4], [5, 6]]);\nprint(array3x2.slice()); // [[1,2],[3,4],[5,6]]\nprint(array3x2.slice(0)); // [[1,2],[3,4],[5,6]]\nprint(array3x2.slice(0, 0)); // [[1,2],[3,4],[5,6]]\nprint(array3x2.slice(0, 0, 1)); // [[1,2]]\nprint(array3x2.slice(0, 0, 2)); // [[1,2],[3,4]]\nprint(array3x2.slice(0, 0, 3, 1)); // [[1,2],[3,4],[5,6]]\nprint(array3x2.slice(0, 0, 3, 2)); // [[1,2],[5,6]]\nprint(array3x2.slice(0, 1, 3, 2)); // [[3,4]]\nprint(array3x2.slice(0, 0, 3, 3)); // [[1,2]]\n\nprint(array3x2.slice(1)); // [[1,2],[3,4],[5,6]]\nprint(array3x2.slice(1, 1)); // [[2],[4],[6]]\nprint(array3x2.slice(1, 0, 1)); // [[1],[3],[5]]\n\nvar empty = ee.Array([], ee.PixelType.int8());\nprint(empty.slice()); // []\nprint(empty.slice(0)); // []\nprint(empty.slice(0, 0, 0, 1)); // []\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\narray1x6 = ee.Array([1, 2, 3, 4, 5, 6])\ndisplay(array1x6.slice()) # [1, 2, 3, 4, 5, 6]\ndisplay(array1x6.slice(0)) # [1, 2, 3, 4, 5, 6]\ndisplay(array1x6.slice(0, 0, 6, 1)) # [1, 2, 3, 4, 5, 6]\ndisplay(array1x6.slice(0, 0, 10, 1)) # [1, 2, 3, 4, 5, 6]\n\ndisplay(array1x6.slice(0, 2)) # [3, 4, 5, 6]\ndisplay(array1x6.slice(0, 5)) # [6]\ndisplay(array1x6.slice(0, 6)) # []\ndisplay(array1x6.slice(0, 0, 2)) # [1, 2]\ndisplay(array1x6.slice(0, 0, 0)) # []\n\n# Negative start and end.\ndisplay(array1x6.slice(0, 0, -3)) # [1, 2, 3]\ndisplay(array1x6.slice(0, -2, 6)) # [5, 6]\n\ndisplay(array1x6.slice(0, 0, 6, 2)) # [1, 3, 5]\ndisplay(array1x6.slice(0, 0, 6, 3)) # [1, 4]\ndisplay(array1x6.slice(0, 0, 6, 4)) # [1, 5]\ndisplay(array1x6.slice(0, 0, 6, 6)) # [1]\n\ndisplay(array1x6.slice(0, 2, 6, 2)) # [3, 5]\n\narray3x2 = ee.Array([[1, 2], [3, 4], [5, 6]])\ndisplay(array3x2.slice()) # [[1, 2], [3, 4], [5, 6]]\ndisplay(array3x2.slice(0)) # [[1, 2], [3, 4], [5, 6]]\ndisplay(array3x2.slice(0, 0)) # [[1, 2],[3, 4],[5, 6]]\ndisplay(array3x2.slice(0, 0, 1)) # [[1, 2]]\ndisplay(array3x2.slice(0, 0, 2)) # [[1, 2], [3, 4]]\ndisplay(array3x2.slice(0, 0, 3, 1)) # [[1, 2], [3, 4], [5, 6]]\ndisplay(array3x2.slice(0, 0, 3, 2)) # [[1, 2], [5, 6]]\ndisplay(array3x2.slice(0, 1, 3, 2)) # [[3, 4]]\ndisplay(array3x2.slice(0, 0, 3, 3)) # [[1, 2]]\n\ndisplay(array3x2.slice(1)) # [[1, 2], [3, 4], [5, 6]]\ndisplay(array3x2.slice(1, 1)) # [[2], [4], [6]]\ndisplay(array3x2.slice(1, 0, 1)) # [[1], [3], [5]]\n\nempty = ee.Array([], ee.PixelType.int8())\ndisplay(empty.slice()) # []\ndisplay(empty.slice(0)) # []\ndisplay(empty.slice(0, 0, 0, 1)) # []\n```"]]
