33 lines
755 B
Markdown
33 lines
755 B
Markdown
---
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title: Use the d3.max and d3.min Functions to Find Minimum and Maximum Values in a Dataset
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---
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## Use the d3.max and d3.min Functions to Find Minimum and Maximum Values in a Dataset
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### Hint 1
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Use the `d3.max()` function.
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### Hint 2
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Use a callback function.
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### Hint 3
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Check for the second element in the callback function's array.
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### Solution
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To solve the solution, you code should look like this, this would check for the `z` co-ordinate i.e. the third element in the array which would be at an index of 2:
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```javascript
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<body>
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<script>
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const positionData = [[1, 7, -4],[6, 3, 8],[2, 8, 3]]
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const output = d3.max(positionData, (d) => d[2]);
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d3.select("body")
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.append("h2")
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.text(output)
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</script>
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</body>
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```
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