how to make image half-transparent and how do i plot on the image?

i want to plot

this on the image

how do i make the image of the map above half-transeparnt and plot on it??

the code of plot is

load('gps_wgs84.mat');
 len = length(gps(:,1));
start_point  =gps(1,:);
 end_point  =gps  (len,:);
figure(1);  zlim([0  100]);  hold  on;  grid  on;  title('GPS  wgs84');
 xlabel('latitude');  ylabel('longitude');  zlabel('altitude');
 plot3(start_point(1),start_point(2),start_point(3),'o',  ...
 'MarkerFaceColor','b');
 plot3(end_point(1),  end_point(2),  end_point(3),'o', ...
 'MarkerFaceColor','r');
 for t=1:len
if(gps(t,4)==2)
plot3(gps(t,1),gps(t,2),gps(t,3),'.y','Markersize',5);
elseif(gps(t,4)==5)plot3(gps(t,1),gps(t,2),gps(t,3),'.g','Markersize',5);
elseif(gps(t,4)==4)
plot3(gps(t,1),gps(t,2),gps(t,3),'.m','Markersize',5);
elseif(gps(t,4)==1)
plot3(gps(t,1),gps(t,2),gps(t,3),'.k','Markersize',5);
end
end
[utmX,utmY,utmzone,utmhemi]=wgs2utm(gps(:,1),gps(:,2),52,'s');
figure(2); hold on; grid on; title('GPS UTM');;
xlabel('x (m)'); ylabel('y (m)'); plot(utmX, utmY);
plot(utmX(1,1), utmY(1,1),'o','MarkerFaceColor','b');
plot(utmX(len,1), utmY(len,1),'o','MarkerFaceColor','r');
[utmX,utmY,utmzone,utmhemi]=wgs2utm(gps(:,1),gps(:,2),52,'s');
figure(2); hold on; grid on; title('GPS UTM');;
xlabel('x (m)'); ylabel('y (m)'); plot(utmX, utmY);
plot(utmX(1,1), utmY(1,1),'o','MarkerFaceColor','b');
plot(utmX(len,1), utmY(len,1),'o','MarkerFaceColor','r');
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Answer 1

[Mehmed Saad]

If you want to draw something on image, plot image (imshow) and plot lines which you want on the image

for example

imshow('moon.tif');hold on

hold on,plot([200 300 300 200 200],[300 300 200 200 300],'LineWidth',5)

PS: You have to scale your data according to image dimension

[eunna shin]

thanks for the answer!

Can you tell me where do i need put imshow? and how can i scale the image?

[Mehmed Saad]

Please attach gps_wgs84.mat

[eunna shin]

here!

[Mehmed Saad]

you need the lat long of map (4 corners) so that you can normalize gps data according to map

see this Example