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.
x = 1:10;
y = rand(1,10);
hPlot = plot(x,y);
[X,Y,Z] = peaks(30);
hObj = surf(X,Y,Z);
I = [5 8; 20 12; 22 28];
hDatatip = makedatatip(hObj, I);
To work with datetime variable (present in the R2016a & b Matlab, add this lines before the for loop
if isa(X, 'datetime') || isa(X, 'duration'), X=datenum(X-min(X)); X=X/max(X); end
if isa(Y, 'datetime') || isa(Y, 'duration'), Y=datenum(Y-min(Y)); Y=Y/max(Y); end
if isa(Z, 'datetime') || isa(Z, 'duration'), Z=datenum(Z-min(Z)); Z=Z/max(Z); end
Works very smoothly! Thank you very much!
Exactly what I needed.
I was wondering why there is a check for positive integers for the subscript of the datatip. The subscript depends on the value on the x-axis/y-axis and these axes could have negative as well as non integer values.
In my data for example the values on the x axis run from 0 to 0.9 and the function was failing because of that. so i modified it to not throw an error.
The file works great with the example but when i try it with my file, i get this message :
"Error using makedatatip (line 95)
Subscript indices must be positive integers."
Someone can help me ?
Thanks for your help
Awesome, thank you.
This is wonderful.
@Guanfeng Gao: Check the answer given by Lliya.
There shows the Error even when I use the example, could anyone tell me how to fix it?:
Error using get
There is no DataCursor property on the PointDataTip class.
Error in makedatatip (line 139)
Fantastic! Just what I needed.
Make the chnages that Illiya recommends and it works just fine.
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:
line 122 needs to be:
pos = [X(index(n)) Y(index(n)) 0];
lines 135-141 should be commented OUT
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.
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.
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:
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.
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.
Any chance of posting this using the BSD License?
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
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.
Just what I was looking for on the Newsgroup a few months ago. Works perfectly on 2006b as well.
Very useful! Sometimes, it's hard to find and select exactly the point, especially for 3-D complex surface.
A nice idea. Good help, lots of examples, good error checking, an H1 line. Well done.
Included a BSD license.
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