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MAKEDATATIP

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MAKEDATATIP

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11 May 2008 (Updated )

Allows programmatically adding datatips to any valid graphical object.

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Description

MAKEDATATIP allows programmatically adding datatips to some graphical objects.

Updated to allow adding datatips to additional handle objects including scatter plots and images. If there are other object types you want supported that do not currently work, please let me know.

Example:
  x = 1:10;
  y = rand(1,10);
  hPlot = plot(x,y);
  makedatatip(hPlot,[3 8])

Example:
  [X,Y,Z] = peaks(30);
  hObj = surf(X,Y,Z);
  I = [5 8; 20 12; 22 28];
  hDatatip = makedatatip(hObj, I);

Acknowledgements

This file inspired Linkdatatips.

Required Products MATLAB
MATLAB release MATLAB 7.14 (R2012a)
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Comments and Ratings (19)
18 Dec 2014 Mark  
08 Dec 2014 Iliya

Useful!
One note though, when using HG2 (the new graphics engine that was officially introduced in MATLAB 2014b), a couple of changes need to be made to the code:
***********CHANGE 1*********
line 122 needs to be:
pos = [X(index(n)) Y(index(n)) 0];
***********CHANGE 2*********
lines 135-141 should be commented OUT

23 Oct 2014 * *  
29 Jul 2013 Alexander Kosenkov  
03 Jun 2013 almog shalom  
12 Nov 2012 Geraint  
12 Nov 2012 Geraint  
09 Oct 2012 Daniel Wirtz

Thanks, quite useful.
Would be nice to also be able to pass an axes/figure handle, which causes the tip to be created for the first graphics object (patch, surface..) found.

10 Jul 2012 Jiro Doke

This is a very useful, well-written function. His help is complete with many examples. I also like how he has extensive error-checking in the code, to ensure proper usage.

18 Sep 2011 Maider Marin

I have an image and I need to put datatips on pixels in positions [61,98] and [63,94] then I try to use this function calling my image J:
hObj=imshow(J);makedatatip(hObj,[61,98; 63,94])
but I got an error:
??? Error using ==> get
There is no 'ZData' property in the 'image' class.

Then I commented line 65 and write
Z=[]; the truth is I am only going to used for images. But then I have a second error.
??? Attempted to access X(61); index out of bounds because numel(X)=2.

Error in ==> makedatatip at 99
pos = [X(index(n)) Y(index(n))];
Can somebody help me.

16 Aug 2011 Benjamin  
21 Jun 2011 Ben  
05 Aug 2010 Alexandre Schimel

very good, well coded and useful function.
Just a note. I use R2008a and tried to use it on a "imagesc" graphical object. The function doesn't work since image properties have different XData and YData and no Zdata. I had to tweak a little the code.

22 Mar 2010 James Ross

Any chance of posting this using the BSD License?

15 Mar 2010 Jason

Is there an easy way to allow makedatatip work with scatter plots?

??? Error using ==> makedatatip at 57
Objects of class 'specgraph.scattergroup' are not a valid targets for
datatips.

Thanks.

15 Apr 2009 Yannick T

Very useful indeed. I don't know why Matlab itself doesn't provide this feature, I spent a lot of time searching the documentation for a way to do this.

23 Jul 2008 Daphne W

Just what I was looking for on the Newsgroup a few months ago. Works perfectly on 2006b as well.
Thanks!

21 May 2008 Ben Kang

Very useful! Sometimes, it's hard to find and select exactly the point, especially for 3-D complex surface.

13 May 2008 John D'Errico

A nice idea. Good help, lots of examples, good error checking, an H1 line. Well done.

Updates
27 Jun 2012

Included a BSD license.
Updated to allow additional objects including scatter plots and images.

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