data cursor function for 3D slice

A
A
2012 4 16
2 个回答
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1 个投票

I need to make the data cursor on a 3D slice display value of the function being displayed; i.e. for slice(X,Y,Z,f,0,[],[]) make data cursor display value of f. Can you suggest a code to do that?
more example:
[X Y Z]=meshgrid([-2:.1:2],[-2:.1:2],[-2:.1:2]);
f=rand(41,41,41);
slice(X,Y,Z,f,0,[],[])

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Sean de Wolski
Sean de Wolski 2012-4-16

1 个投票

Use datacursormode and set a your own updatefcn to display the value.
doc datacursormode
Provide us with a small example for more specific assistance.
More per example
function dcmmode_example
[X Y Z]=meshgrid([-2:.1:2],[-2:.1:2],[-2:.1:2]);
f=rand(41,41,41);
slice(X,Y,Z,f,0,[],[])
dcm_obj = datacursormode(gcf); %datacursor mode on
set(dcm_obj,'enable','on','updatefcn',{@updateMe X Y Z f}) %update, need X,Y,Z, f-values
function msg = updateMe(src,evt,X,Y,Z,f)
evt = get(evt); %what's happenin'?
pos = evt.Position; %position
fval = f(X==pos(1)&Y==pos(2)&Z==pos(3)); %where?
msg = num2str(fval); %create msg

更多回答（1 个）

A
A 2012-4-16

0 个投票

that worked... thanks
Total longshot, but is there a way to draw a line across the slice and plot the line profile? (i.e. have it open a new figure and plot values of f across that line)

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Sean de Wolski
Sean de Wolski 2012-4-16
I don't see why not.
Sean de Wolski
Sean de Wolski 2012-4-17
Get the information (somehow similar to what I did) and then call another function that draws lines.
A
A 2012-4-18
let me rephrase the question... I need the user to be able to draw an arbitrary line on the slice figure and have matlab plot magnitude of f along that line.
Jan
Jan 2012-4-28
The question is not clear.

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