About MATLAB Answers

MATLAB Answers™ provides a collaborative environment for finding the best answers to your questions about MATLAB, Simulink, and related products. You can tap into the knowledge and experience of over 100,000 MATLAB Central members and MathWorks employees. Specifically, you can:

Your use of MATLAB Answers is subject to the MATLAB Central Terms of Use.

Search for Questions and Answers

Before you ask a question, search to see if the question already exists or has been answered. You can use filters to refine your search. You can filter by status (answered, answer accepted, or unanswered), category, product, or date asked.

You can also use tags or search directives. All questions are tagged with one or more keywords to help community members find questions and answers of interest.

When searching for an answer, select the best answer based on usefulness and votes, which help indicate quality.

Using Tags

Tags provide bookmark information to help find or recall content. You are required to enter at least one tag when you ask a question. With tags, you can browse using assigned keywords. All tags are public; anyone can view them.


Using Search Directives

Search directives help you find content on MATLAB Answers. You can specify search directives in the search box or as edits you make to the URL.

Content Result Directive Examples
Content with this tag tag:
Content asked, answered, or commented by this contributor contributor:
Content asked by this contributor asked_by:
Content answered by this contributor

answered_by:

Content commented by this contributor commented_by:
Content asked within last 7 or 30 days asked_at:
Questions based on this status: accepted, answered, or unanswered status:
Contributors with a public profile in which the Company/Organization field contains this string organization:
Answers that include this string answer:
Comments that include this string comment:
Questions that include this string question:
Titles that include this string title:
Content with this category name category:
Content related to this product product_base_code:

Relevance and search results

Search directives can lead you to the right questions and answers quickly. If you use keywords in your search, results are sorted by relevance. Otherwise, results are sorted by date updated.

What factors influences relevance?

Multiple factors affect relevance, including:

  • The title of a question—make titles as descriptive as possible to optimize relevance.
  • Tags associated with a question—make tags as descriptive as possible to optimize relevance.
  • Products associated with a question.
  • Whether the question has an accepted answer.
  • The number of answers the question received.
  • The number of votes the question received.

Tips for Using Directives

  • To search for a multi-word phrase, enclose the phrase in quotation marks; for example, author:"Helen Chen".
  • To narrow search results, use combinations of directives in the same search. Be sure to include a space between each directive. MATLAB Answers finds content matching all specified directives.
  • To search for more than one value for the same directive, specify one directive for each value. For example, the syntax tag:graphics tag:vectors finds all files tagged with both graphics and vectors.
  • To exclude files from your search results, insert a minus sign (-) before the directive syntax. For example, the syntax -tag:game excludes all files with the tag game.

Ask a Question

Before submitting a question, search to make sure it doesn't already exist.

Excerpt from the home page displaying the search box
Excerpt from the home page displaying the search box

If your search did not provide an answer to your specific question, go ahead and ask it. The community is very responsive, so check back soon for answers.

Excerpt from the form for asking a question
Excerpt from the form for asking a question

Tips for Asking a Good Question

  • Write descriptive questions that are specific and brief; for example,
    How can I change the line color of a graph using plot?
  • Cite the error number in the title when applicable.
  • Include enough code to reproduce your problem exactly.
  • Share steps that did not solve your problem.
  • Indicate add-on products used, such as toolboxes or blocksets.
  • Avoid words that clutter content, such as hi, urgent, help, thanks, and I’m new.
  • Limit each question to only one issue.

Answer a Question

Provide meaningful and descriptive answers to questions. If you are unable to answer a question because it is not clear, add a comment to the question requesting clarity or more detail. Please note: 15 or more reputation points are required to answer MathWorks Support Team authored questions.

Form for answering a question.
Form for answering a question

Tips for Creating Helpful Answers

  • Read the entire body of the question before answering; do not base your answer on only the title.
  • Add a comment to request clarity for an answer.
  • For new questions that were asked and answered before, link to the existing answer from the new question.
  • Be honest and considerate with all responses to all contributors.

Add a Comment

Use comments to communicate with other participants about questions, answers, or comments. You can use comments to thank other contributors for answers to your questions or helpful comments. Please note: one cannot comment on questions authored by the MathWorks Support Team, and 15 or more reputation points are required to comment on answers to MathWorks Support Team authored questions.

A sample comment submitted to an answer.
A sample comment submitted to an answer.

Tips for Making Comments Helpful

  • Use comments to request clarity on a question, answer, or comment.
  • Write comments that are relevant and brief.
  • Be honest and considerate with all responses to all contributors.
  • Be aware that responses containing profanity, vulgarity, or an offensive tone will be removed.

Add a Flag

A flag is a request for review that any contributor can assign to content. Contributors with sufficient privileges can then review and potentially revise, close, or delete the flagged content. 

Questions, answers, and comments can be flagged if unclear, not appropriate, or spam.

Contributors with sufficient privileges are encouraged to improve the record or remove the flag (when the flag itself is inappropriate). The nature of the flag helps determine the action needed. This process helps improve the overall quality of MATLAB Answers. MATLAB Central administrators monitor the flagged content page regularly.

Boost Your Acceptance Rate

When someone provides a great answer to one of your questions, accept it to let that person know that you are happy with that answer.

MATLAB Answers keeps track of whether your questions have accepted answers and displays your Acceptance Rate on your home page. An Acceptance Rate of 100% means that you accepted at least one answer for every question you asked. If your Acceptance Rate is below 100%, take a look at your questions and see if any of them have wonderful answers that you want to accept. If you have not received any acceptable answers to a question, consider clarifying or adjusting the question to help others find an answer.

Note: If you accidentally accept an answer for a question or you accept an answer and later find a different answer is better, you can unaccept an answer. Until you accept a new answer, your Acceptance Rate will go back to what it was before you accepted an answer for this question.

Earn Privileges

As you earn reputation points on MATLAB Answers, you also earn the ability to perform more significant tasks. You can check your profile page to view the reputation points and associated privileges you’ve earned. From this page, you can also check the points required for the next level of privileges. Note that administrators managing the system and editors with previously earned reputations have all privileges.

Editing and deleting questions, answers, and comments requires a high number of reputation points, as shown below. The objective of editing is very simple; make content clear, specific, and short. Good questions lead to good answers and result in a searchable archive with lasting value.

Note: Contributors who have earned sufficient privileges may edit and delete questions, answers, and comments at their discretion. This includes removal of personal attacks, spam, and inappropriate or off-topic content, and unaccepting answers. If you unaccept an answer, there is no loss in points.

Reputation Points Required Privilege Earned Usage Notes
3000 Delete questions, answers, and comments.

Delete content with care. Deletions are permanent; you cannot undo them. Once deleted, new activity is prohibited and content is removed from search results. Candidates for deletions include:

  • Inappropriate content
  • Spam
  • Personal attacks
  • Off-topic content not related to MATLAB, Simulink, or related products

You cannot delete your own questions if they received answers.
2000 Edit questions, answers, and comments.

Edit to address:

  • Rudeness in content. Rewrite in a neutral tone.
  • Multiple, unrelated questions posted in one question field. Separate and repost as individual questions with attribution, or ask the contributor to post.
  • Questions posted in answer fields. Delete this content and repost as a question, attributing the contributor, or ask the contributor to post.
  • Pleasantries and non-related comments posted in answer fields. Copy this content to a new comment for the appropriate answer, attribute the contributor, and then delete the non-answer.
  • Unclear titling. Ensure that question titles are descriptive and specific.

Optionally edit as follows for improved community usage:

  • Correct misspelled words and fix fractured grammar.
  • Set code in monospace font using indentation. See markup syntax.
  • Add correct syntax for hyperlinks or images. See markup syntax.
  • Format links to documentation as follows:
    <doc_url |function name|>    .
  • Capitalize the first letter in question titles.
  • Make sure product references are correct, including spelling MATLAB using all uppercase letters.
2000 Move answers and comments.

Answers and comments can be moved within a question thread. During a move, the content's Original Poster (OP) and time created is preserved and the OP's reputation is unchanged. After a move, any reputation earned is awarded to the content's OP.

You can perform these moves:

  • Convert a comment to an answer and move it to the question. The new answer, after conversion, appears in the list with any other answers, resorted by votes and time created to accommodate the new answer.
  • Convert an answer to a comment and move it to the question or an answer. The new comment, after conversion, appears in the list of comments for the question or answer where you placed it, resorted by votes and time created to accommodate the new comment. If the original answer has any comments, these comments are also moved along with the new comment, and sorted appropriately.
  • Move comments between a question and its answers. Comments can be moved from questions to answers, answers to questions, and between answers. The moved comment appears in the list of comments for the question or answer where you placed it, resorted by votes and time created to accommodate the moved comment.

Moves are not allowed to or from spam content.

1500 Open locked or closed questions.

Opening a locked question removes activity limitations from the question thread.

Opening a closed question removes activity limitations from the question thread and restores it to search results.
1500

Lock or close questions.

Locking a question temporarily limits thread activity to voting and flagging only.

Closing a question temporarily limits thread activity and removes it from search results. The original poster is able to delete the question if there are no answers.
1500 Delete flags from questions.

No specific usage notes apply at this time.
500 Accept answers to questions.

Answers can only be accepted by someone other than the author of the question after 7 days of inactivity from the author.
50 Delete tags and products from questions.

This privilege deletes the tag or product from the question but not from the community.

  • Delete tags that are meaningless or obstruct searches.
  • Delete products that are not related to the question.
  • Separate tags lumped together by mistake: for example, delete matlab fft and add matlab and fft.
5 Add and edit tags and products for questions. When adding tags and products:
  • Use correct product names in all references.
  • Add standard-usage tags as needed to facilitate searches. For example, use the format R2010b for release numbers (not matlab r2010b or r2010b 7.1). The goal is to avoid diluting the usefulness of tags by creating variations; for example, rand, random, randomness, and randomize. Standard usage for tags will emerge from the community.

Building a Reputation

As a reward for contributing great questions and answers, you earn points. The number of points you earn depends on the action taken. The more points you earn, the greater your reputation—with the bragging rights to match.

When a contributor… You earn…
Accepts your answer 4 points
Votes up your answer 2 points
Votes up your question 1 point

Top Contributors

Your contributions to the MathWorks online community can provide a valuable resource to other community members. Have your expertise recognized with a status that identifies you as a trusted and reliable contributor.

NOTE: The Rising Star status is updated monthly on the first of the month.

Status Reached When…
Most Valuable Participant

You earn 5,000+ reputation points.
Editor

You earn 3,000+ reputation points.
Rising Star

You have a minimum average of 4 accepted answers per month for 3 months.

This status belongs to you as long as you maintain an average of at least 2 accepted answers per month, or until you reach Editor status with a reputation of 3,000+ points.
User Level 10

You earn 25,000 reputation points.
User Level 9

You earn 10,000 reputation points.
User Level 8

You earn 5,000 reputation points.
User Level 7

You earn 3,000 reputation points.
User Level 6

You earn 1,500 reputation points.
User Level 5

You earn 500 reputation points.
User Level 4

You earn 150 reputation points.
User Level 3

You earn 50 reputation points.
User Level 2

You earn 15 reputation points.
User Level 1

You earn 5 reputation points.

Earn Badges

In addition to building and gaining privileges, you can also earn badges as you participate in MATLAB Answers. Any badges you earn appear on your community profile page. 

Some examples of badges you can earn are:

  • First Answer
  • Most Accepted
  • Knowledgeable
  • Streak
  • ... and many more

Visit the community badges page to view the types of badges you can earn.

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