Extracting data from lines in a plot

Hi First I'd like to apologize for my poor english. I'm writing a program, in one part I am plotting different lines which allow the users to select a pair of them (lines) for further actions. To identify the best pairs user must be informed with critical information like (hour, height, magnitude ). I want to show this 3 as data tips. But I don't know how to show each lines properties differently.

As you see in the picture, Lines are labeled. For each number I have a magnitude. I want to show that Mag in the data tip! What you see in the picture is something fake which I made to show what I mean. It's a constant number for mag which must be something different for different lines.

Answer 1

[Hugo]

Have you tried using the command text()? Suppose that the tip of one of the lines is in (a,b). Then you can just do

 text(a,b,yourtexthere,'HorizontalAlignment','center','VerticalAlignment','middle');

That will just write some text at the tip of the line. You can write it wherever you want by changing the values of a and b. The values or a and b are scaled according to the axes.

Or do you want something that appears automatically only when the user is pointing at the line with the mouse.

Best regards,

[Sina Abolhoseini]

Hi, Thank you for your concern. But I think you didn't got my problem. I need somehow identifying different lines. For example clicking on line 369 and it shows me 5 , then I click on line 283 and it shows 2. How should I relate the lines with values from another place?!!!

[Hugo]

I think my second answer should solve this problem. What I suggested there was to attach to each line a contextual menu. To show specific data, just replace the labels with what you want to show. If not, I may still not get what you want.

Answer 2

[Hugo]

Just in case, you could also provide a contextual menu by doing the following

 hmenu=uicontextmenu;
 uimenu(hmenu,'Label','MAG=something');
 uimenu(hmenu,'Label','NUM=something');
 uimenu(hmenu,'Label','TIME=something');

 set(hline,'uicontextmenu',hmenu);

Here hmenu is a handle for the contextual menu, and hline is the handle of the line you created. For seeing the menu, the user must right-click on the line.

Hope this helps.