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2 |
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3 | # Function sparse
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4 |
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5 | Create a Sparse Matrix. The function creates a new `math.Matrix` object from
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6 | an `Array`. A Matrix has utility functions to manipulate the data in the
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7 | matrix, like getting the size and getting or setting values in the matrix.
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8 |
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9 |
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10 | ## Syntax
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11 |
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12 | ```js
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13 | math.sparse() // creates an empty sparse matrix.
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14 | math.sparse(data) // creates a sparse matrix with initial data.
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15 | math.sparse(data, 'number') // creates a sparse matrix with initial data, number datatype.
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16 | ```
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17 |
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18 | ### Parameters
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19 |
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20 | Parameter | Type | Description
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21 | --------- | ---- | -----------
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22 | `data` | Array | Matrix | A two dimensional array
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23 |
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24 | ### Returns
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25 |
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26 | Type | Description
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27 | ---- | -----------
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28 | Matrix | The created matrix
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29 |
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30 |
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31 | ## Examples
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32 |
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33 | ```js
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34 | let m = math.sparse([[1, 2], [3, 4]])
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35 | m.size() // Array [2, 2]
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36 | m.resize([3, 2], 5)
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37 | m.valueOf() // Array [[1, 2], [3, 4], [5, 5]]
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38 | m.get([1, 0]) // number 3
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39 | ```
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40 |
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41 |
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42 | ## See also
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43 |
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44 | [bignumber](bignumber.md),
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45 | [boolean](boolean.md),
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46 | [complex](complex.md),
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47 | [index](index.md),
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48 | [number](number.md),
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49 | [string](string.md),
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50 | [unit](unit.md),
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51 | [matrix](matrix.md)
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