MATLAB: One dimensional random walk model MATLAB code?

1d random walkdrunkardhomework

A drunk man's random walk in one dimension

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The most I can do is to offer up these two attached random walk demos that I've posted before (and you've probably already found if you've done a search of this forum). Feel free to adapt them to 1D by getting rid of the "y" calculation. If you have specific questions with your code, read these:

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

http://www.mathworks.com/matlabcentral/answers/8626-how-do-i-get-help-on-homework-questions-on-matlab-answers

and then come back here.

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MATLAB: How does MATLAB Answers break ties among answers

The accepted answer is always listed first.

After that, answers are sorted by the number of votes, then by when the answer was created (oldest-to-newest).

This can cause "jumping" when an older answer is voted up to have the same number of votes as a younger answer. For example:

Answer 2 is listed above answer 1 because it has more votes.

 +--------+-------+---------+
 | Answer | Votes | Created |
 +--------+-------+---------+
 | 2      | 2     | 00:01   |
 +--------+-------+---------+
 | 1      | 1     | 00:00   |
 +--------+-------+---------+

Answer 1 receives a vote, and appears to jump over answer 2 because, even though they now have the same vote count, answer 1 is older.

 +--------+-------+---------+
 | Answer | Votes | Created |
 +--------+-------+---------+
 | 1      | 2     | 00:00   |
 +--------+-------+---------+
 | 2      | 2     | 00:01   |
 +--------+-------+---------+

MATLAB: Who can see the vote of an answer or a question

Who can see them? Are you asking to know who voted for an answer or question, or how many votes something has gotten?

Anyone can see the NUMBER of votes. I believe even if you are not signed into the site, you can see the NUMBER. (I might check that in a minute: Just tested that claim, and indeed as a test, I voted for your question, signed out, and could still see that your question had one vote. I could not remove my test vote however, until I signed back in.)

However, nobody is given information as to WHO voted. Well, I believe the FEX admin probably has that info. There is one caveat on that, IF I vote for your question or answer, then I will see that I did indeed vote, and I am also given the option to un-vote my vote. So I know the information is stored. But only I am given the opportunity to know that I voted for something, and I am not told that for anyone else. Reputation is NOT a factor here. This is true for anyone. You know who you voted for, and can undo that vote at any time.

You CANNOT vote for your own question or answer. That option is grayed out.

Finally, I find that in some cases, I am willing to tell someone that I was one of the voters who gave an up-vote. If so, then I'll post a comment that starts with +1.

Personally, I think it a good thing to NOT know who has voted for an answer or question. Making it essentially anonymous may well make it easier for some to give an up-vote when they might be reluctant otherwise. And since, as I said, you can always do the +1 thing in a comment, nothing stops you from removing the layer of anonymity for yourself.

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Related Solutions

MATLAB: How does MATLAB Answers break ties among answers

MATLAB: Who can see the vote of an answer or a question

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