Doug's MATLAB Video Tutorials

February 25th, 2011

Creating a custom data cursor

 This video shows how to make a custom data cursor so that when you click on a data point, it will show you the information you want about that data. Also, this video demonstrates a technique for using varargin to pass inputs from one function to another.

Get Adobe Flash player .

Author picture

By Doug Hull

Doug first used MATLAB in 1994, could not figure it out until he got some help in 1995. He is now dedicated to making sure that no one else wastes a year of their life not knowing MATLAB like he did.

21:59 UTC | Posted in Format: Video, Level: Advanced | Permalink | 9 Comments »

You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

9 Responses to “Creating a custom data cursor”

  1. oleg replied on February 27th, 2011 at 13:59 UTC :

    There’s just one problem with datacursormode on: http://www.mathworks.com/matlabcentral/answers/2005-windowkeypressfcn-and-datacursormode-on

    Oleg

  2. bob replied on May 22nd, 2011 at 08:16 UTC :

    How do you make a custom data cursor function?

    I’d like to be able to return the data cursor position to my other functions

  3. dhull replied on May 23rd, 2011 at 15:28 UTC :

    @bob,

    That is what the video is about. What do you mean?

  4. bob replied on May 24th, 2011 at 09:12 UTC :

    Ok, I figured it out.

    Made the figure handle visible to other callbacks.
    Had to edit the data-tip update function to pass in the handle to the figure (since it’s not a callback).
    Then setappdata the data-tip-position in the update-function using the figure handle.

    And voila, can access data-tip-position in other callbacks of my GUI.

    That’s what I meant. Couldn’t get getCursorInfo to work properly.

    Anyway, cool video, it helped point me in the right direction.

  5. L Graves replied on June 20th, 2012 at 17:11 UTC :

    A question I have is concerning getting cursor position when using multiple Y axis. I call and set currentaxis then click on datacursor and the y value is always the 1st axis.

  6. Doug replied on June 26th, 2012 at 13:37 UTC :

    They are stacked on top of one another. You need to turn hittest off for the one on top for the second one to ‘see’ the click.

    Doug

  7. Jette replied on June 27th, 2012 at 07:00 UTC :

    Thank you very much for this video.

    I still habe one question:
    As far as I understand it, there is only one data-tip update function per figure. If I have a figure with several axes on it which have different kind data (and different plot types), is there a possibility to create a different output for different axes?

  8. Doug replied on June 27th, 2012 at 13:19 UTC :

    Jette,

    You would just have to make that function more self-aware as to who called it.

    Doug

  9. Audrey replied on July 26th, 2012 at 21:18 UTC :

    I’m also interested in creating datatips with different output formats for different axes.

    Could you please explain what you mean by “more self-aware”?

    Thanks!
    Audrey

Leave a Reply

Wrap code fragments inside <pre> tags, like this:

<pre class="code">
a = magic(3);
sum(a)
</pre>

If you have a "<" character in your code, either follow it with a space or replace it with "&lt;" (including the semicolon).
MathWorks

About

Doug Hull is a proud MathWorker who is on a mission to help you with MATLAB.

Doug's picture

Subscribe


Blog Admin

These postings are the author's and don't necessarily represent the opinions of MathWorks.