How to add a data cursor to a 3d surface which only shows the 'Z-value'?

Hi guys,

Imagine I have a very simple: surf(peaks) 3d surface.

I would like to show a tiny pop-up window for a given x and y coordinate which only shows the 'Z' value? and it would be great if I can give the 'Z' a custom name.. such as "Monthly Income" for example.

Does this make sense?

Thank you

Answer 1

[Walter Roberson]

http://uk.mathworks.com/matlabcentral/answers/218797-displaying-extra-information-for-datapoints-on-a-plot

[A]

Thank you Walter. Any chance you could give me a sample code? I'm a bit of a noob. I'm not sure how I can tell matlab to put up a data cursor at x,y and only have it show me the Z value and also give me the option to call the z value something else?

Thank you

[Walter Roberson]

Have a look at the last example at http://www.mathworks.com/help/matlab/ref/datacursormode.html as it shows a custom update function that uses different wording.

[A]

Thanks so much. I almost have it working. The only thing is.. is there a way for the data cursor to already be showing when you graph it (i.e., add it programmatically at a specific x,y rather than click it with your mouse?)?

Thanks

[Walter Roberson]

set(dcm_object, 'Enable', 'on')

[A]

Hi Walter,

That just allows for the mouse to click on the figure to create a data cursor. I'm looking for a way for the data cursor to already be there without having to click at a particular x,y,z value. Also, I want to lock this so that the user is not able to click elsewhere with the mouse and get a new data cursor at another position. Hope this makes sense.

[Walter Roberson]

Short answer: use this File Exchange Contribution

[Walter Roberson]

Keywords so this will get indexed by the search engine: datacursormode datatip createdatatip

[A]

Done. Thanks. Will check out the link.