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fix a typo

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edited Jun 22, 2016 at 14:45

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All the solutions so far have plotted {n, 2^Prime[n]} for integer values of n, which means that the points will be evenly spaced along the horizontal axis. Here's how to do what was actually asked, plotting {x, 2^x} for prime values of x.

Since 2^x grows so quickly, I'll demonstrate instead with Sqrt[x] so that it's easier to see the uneven distribution of primes along the horizontal axis.

Using ListPlot, you want to specify the horizontal position using {x,y} pairs, rather than just a list of heights:
```
  primes = Table[Prime[n], {n, 20}];
  ListPlot[Table[{x, Sqrt[x]}, {x, primes}]]
```

enter image description here

Using DiscretePlot, you want to provide the horizontal positions using the {x, {x1, x2, ..., xn}} variable specification:
```
  primes = Table[Prime[n], {n, 20}];
  DiscretePlot[Sqrt[x], {x, listprimes}]
```

enter image description here

Since 2^x grows so quickly, I'll demonstrate instead with Sqrt[x] so that it's easier to see the uneven distribution of primes along the horizontal axis.

Using ListPlot, you want to specify the horizontal position using {x,y} pairs, rather than just a list of heights:
```
  primes = Table[Prime[n], {n, 20}];
  ListPlot[Table[{x, Sqrt[x]}, {x, primes}]]
```

enter image description here

Using DiscretePlot, you want to provide the horizontal positions using the {x, {x1, x2, ..., xn}} variable specification:
```
  primes = Table[Prime[n], {n, 20}];
  DiscretePlot[Sqrt[x], {x, list}]
```

enter image description here

Since 2^x grows so quickly, I'll demonstrate instead with Sqrt[x] so that it's easier to see the uneven distribution of primes along the horizontal axis.

Using ListPlot, you want to specify the horizontal position using {x,y} pairs, rather than just a list of heights:
```
  primes = Table[Prime[n], {n, 20}];
  ListPlot[Table[{x, Sqrt[x]}, {x, primes}]]
```

enter image description here

Using DiscretePlot, you want to provide the horizontal positions using the {x, {x1, x2, ..., xn}} variable specification:
```
  primes = Table[Prime[n], {n, 20}];
  DiscretePlot[Sqrt[x], {x, primes}]
```

enter image description here

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created May 10, 2013 at 4:19

Brett Champion

20.9k
2
65
122

Since 2^x grows so quickly, I'll demonstrate instead with Sqrt[x] so that it's easier to see the uneven distribution of primes along the horizontal axis.

Using ListPlot, you want to specify the horizontal position using {x,y} pairs, rather than just a list of heights:
```
  primes = Table[Prime[n], {n, 20}];
  ListPlot[Table[{x, Sqrt[x]}, {x, primes}]]
```

enter image description here

Using DiscretePlot, you want to provide the horizontal positions using the {x, {x1, x2, ..., xn}} variable specification:
```
  primes = Table[Prime[n], {n, 20}];
  DiscretePlot[Sqrt[x], {x, list}]
```

enter image description here