3
$\begingroup$

Why is the following code not plotting the set of points from {1,1} to {10,10} ?

For[i = 1, i <= 10, i++, Graphics[Point[{i, i}]]]
$\endgroup$
  • 1
    $\begingroup$ Unless an explicit Return is used, the value returned by For is Null. $\endgroup$ – chuy Sep 11 '12 at 21:40
4
$\begingroup$
Graphics[Table[Point[{i, i}], {i, 10}]]

If you want to see the output of your command, modify it a little:

For[i = 1, i <= 10, i++, Print@Framed@Graphics[Point[{i, i}]]]

You will see ten graphics, one point in each one

| improve this answer | |
$\endgroup$
  • $\begingroup$ also Graphics[Point@Table[{i, i}, {i, 10}]] $\endgroup$ – rm -rf Sep 11 '12 at 21:41
  • $\begingroup$ what I am actually interested in is generating i random points (For seems like a good idea when a number of loop repetitions is known) and then plotting them. Could you give me a hint about this? $\endgroup$ – alex Sep 11 '12 at 21:45
  • $\begingroup$ @alex Put the loop (in Table form) inside the Graphics $\endgroup$ – Sjoerd C. de Vries Sep 11 '12 at 21:46
  • 1
    $\begingroup$ @alex So something like: Graphics[Point@RandomReal[1, {100, 2}]]? $\endgroup$ – rm -rf Sep 11 '12 at 21:47
  • $\begingroup$ I managed to make it work with something like: ListPlot[Table[{RandomReal[{startRange, endRange}], RandomReal[{min, max}]}, {pointsCount}]]. Thanks $\endgroup$ – alex Sep 11 '12 at 22:17

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.