[SOLVED] Getting positions without clicking on plot with ginput command on MATLAB

Getting positions without clicking on plot with ginput command on MATLAB

I am trying to get positions at the following map with ginput command. But the problem is I want to see the position of the point before clicking it.

Is it possible to that? After I clicked N points I can see positions, but I can not click them anymore. I should see the position first and after that I need to click it.

Thanks in advance!

Here is the code:

clc
clear
close all
geoaxes('Units','normalized');
N=5;
set (gcf, 'WindowButtonMotionFcn', @mouseMove);

for i=1:N

[lat,lon]=ginput(1)
hold on
geolimits('manual')
geoscatter(lat,lon,'filled','b')
end

set (gcf, 'WindowButtonMotionFcn', @mouseMove);

function mouseMove (object, eventdata)
C = get (gcf, 'CurrentPoint');
title(gca, ['(X,Y) = (', num2str(C(1,1)), ', ',num2str(C(1,2)), ')']);
end

Solution

If you have the mapping toolbox you can use gcpmap to simplify this I think.

The main issue just requires a drawnow in the callback function. Then I used waitforbuttonpress and CurrentPoint to get the location of the click instead of ginput.

h = geoaxes('Units','normalized');
geolimits('manual')
set (gcf, 'WindowButtonMotionFcn', @(x,y) mouseMove(x,y,h));
hold on

N=5;
for i=1:N
    waitforbuttonpress;
    pt = h.CurrentPoint;
    lat = pt(1,1);
    lon = pt(1,2);
    geoscatter(lat,lon,'filled','b')
end
hold off


function mouseMove (~, ~, handle)
C = handle.CurrentPoint;
title(gca, ['(X,Y) = (', num2str(C(1,1)), ', ',num2str(C(1,2)), ')']);
drawnow
end