geolocation plot time series

Hi all!

I am try to plot geolocation trajectory to look something like: http://www.quantifiedbob.com/wp-content/uploads/2013/09/moves-data-visualization-1.png

I try to change code I found but could not figure out how to make it appear as time series (that is, a trajectory type graph instead of just plotted points)

Here is code I found:

function [x,y] = mercatorProjection(lon, lat, width, height)
  x = mod((lon+180)*width/360, width) ;
  y = height/2 - log(tan((lat+90)*pi/360))*width/(2*pi);
end%# GPS positions (latitude,longitude) of some markers
data = [
  -22.976730, - 43.195080 ;
   55.756950,   37.614975 ;
   33.605381, -  7.631940 ;
   35.670479,  139.740921 ;
   51.506325, -  0.127144 ;
   40.714550, - 74.007124 ;
  -33.869629,  151.206955 ;
  -26.204944,   28.040035 ;
   37.777125, -122.419644 ;
   30.083740,   31.255360 ;
    6.439180,    3.423480
];
labels = {
  'Rio de Janeiro'
  'Moscow'
  'Casablanca'
  'Tokyo'
  'London'
  'New York'
  'Sydney'
  'Johannesburg'
  'San Francisco'
  'Cairo'
  'Lagos'
};
%# world map in Mercator projection
fname = 'http://upload.wikimedia.org/wikipedia/commons/thumb/7/74/Mercator-projection.jpg/773px-Mercator-projection.jpg';
img = imread(fname);
[imgH,imgW,~] = size(img);

%# Mercator projection [x,y] = mercatorProjection(data(:,2), data(:,1), imgW, imgH);

%# plot markers on map imshow(img, 'InitialMag',100, 'Border','tight'), hold on plot(x,y, 'bo', 'MarkerSize',10, 'LineWidth',3) text(x, y, labels, 'Color','w', 'VerticalAlign','bottom', 'HorizontalAlign','right') hold off

Answer 1

[Chad Greene]

Your plot command specifies blue circle markers with 'bo'. If you want blue circle markers and a line, use 'bo-'. If you just want a blue line, try 'b-'.