Datatip

Hello!

I have a question regarding datatip on my GUI graph. Everytime I run my GUI and select Data Cursor I have to right click on graph and select my datatip file. The graph opens up the default one(X : xxxx, Y : yyyy). Mine shows date and mass. It's just a bit annoying opening up everytime... Can I change this by making it default for this GUI file?

Thank you in advance!

Answer 1

[Fangjun Jiang]

I assume you have your data tip function, you can set it when you enable the data cursor mode.

%%Original data
f=figure;
h=plot(rand(10,1));
dcm=datacursormode(f);
datacursormode on;
set(dcm,'updatefcn',@MyDataTipFunction);

http://blogs.mathworks.com/videos/2011/10/19/tutorial-how-to-make-a-custom-data-tip-in-matlab/

[Slobodan Djordjevi?]

I did all you said and what the tutorial has shown me, but when applied in my GUI it separately opens a figure. It works nicely, but not quite in my application.

[Walter Roberson]

Do not use the "figure" command when you adapt the code for your own use. Or that particular plot() command either ;-)

[Slobodan Djordjevi?]

I'm sorry. I don't understand this. In my data cursor file/function, I have figure and plot. I should leave that alone, cause it is working if I plot(rand(5))... But in Gui if I let plot(...) be just plot, nothing happens... I'm a bit disoriented... :) thanks for the help by the way...

[Fangjun Jiang]

Your GUI graph is already a figure. So when you enable its data cursor mode, you need to get the handle of your GUI graph, then do the dcm=datacursormode(FigureHandle) and then set(dcm,...).

Answer 2

[Slobodan Djordjevi?]

If I understand correctly, my GUI's name is goliGUI = FigureHandle

function datumplot(varargin)

goliGUI = figure
plot(varargin{:})

dcm = datacursormode(goliGUI);
datacursormode on
set(dcm, 'updatefcn', @myfunction)

function output_txt = myfunction(obj,event_obj... *etc*.

File's name is datumplot.m.

[Fangjun Jiang]

It looks right. Anything wrong?

[Slobodan Djordjevi?]

So I have to go to my GUI and replace plot with datumplot and it should work?

[Slobodan Djordjevi?]

If I do this, my GUI creates a separate window(Figure1) and data cursor is on and shown correctly. How do I keep it in my GUI? Walter said something about not to use figure?

Answer 3

[Slobodan Djordjevi?]

I did it...

Now I understand. My GUI is a figure itself. So my code now works and looks like this :

function datumplot(varargin)

fh = goliGUI
plot(varargin{:})

dcm = datacursormode(fh);
datacursormode on
set(dcm, 'updatefcn', @myfunction)

function output_txt = myfunction(obj,event_obj)...etc.

Thank you Walter and Fangjun, you really helped me.

Answer 4

[Thomas Flick]

This is an old post but as far as I can tell the problem has not been satisfactorily solved in that there is no proposed solution that is as easy as setting a default. Here is one that is that easy:

(1) Make a new shortcut or favorite. This requires a fairly new version of Matlab.

(2) Copy/paste this code into your favorite:

dcm=datacursormode(gcf);

datacursormode on;

set(dcm,'updatefcn',@MyDataTipFunction);

(3) While viewing your plot, click on your "favorite" button. This puts the plot in data cursor mode using your data tip function.