How to make plot with enter the coordinate

I want to make a plot with coordinate.

Starting the plot I want to get the exact coordinate.

Is there any mathod with keyboard?

[Jan]

The question is not clear yet. A coordinate of what? On the earth, on the monitor, in an axes?

[gyeonggeun kim]

disp('Initial location of particles')
lon0=[];
lat0=[];
for i=1:pn
    title(['Click initial position of particle #' num2str(i)])
    [loni lati]=ginput(1);
    lon0=[lon0 loni];
    lat0=[lat0 lati];
    plot(loni,lati,'ko','markerfacecolor','k')
end

[gyeonggeun kim]

not using mouse

I want to use keyboard and directly input the coordinates

[Geoff Hayes]

But what do you want to do with those coordinates that you input with the keyboard? Is that where you call

plot(loni,lati,'ko','markerfacecolor','k')

where you want the loni and lati to be the longitude and latitude that the user enters?

[gyeonggeun kim]

I want to enter (35,131)

[Geoff Hayes]

You may want to try using the inputdlg to capture the input and then process it.

[gyeonggeun kim]

umm.. It doesnt' work.

[Geoff Hayes]

You may want to show what you have attempted and clarify what you mean by "It doesn't work".

[gyeonggeun kim]

Inputdlg is not working that I want to input coordinates.

[gyeonggeun kim]

Is there a way to take the coordinates I want?

[Geoff Hayes]

If you want to enter the coordinates you want and then do something with them, you could try

prompt = {'Enter latitude (degrees):','Enter longitude (degrees):'};
dlgtitle = 'Input coordinates';
answer = inputdlg(prompt,dlgtitle)
latitude = str2double(answer{1});
longitude = str2double(answer{2});

% do whatever checks you need here for valid latitude and longitudes
if abs(latitude) > 90
    latitude = mod(latitude,90);
end
if abs(longitude) > 180
    longitude = mod(longitude,180);
end

fprintf('latitude is:  %f\n', latitude);
fprintf('longitude is: %f\n', longitude);

But it still isn't clear to me that this is really what you are asking for.

[gyeonggeun kim]

Thank you very much! I will try it