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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by carsten[/i] [br]I would like to visualize trajectories (=lines) on a sphere. To this end I need to draw a sphere of radius=1 using a net of latitudes and longitudes. Furthermore, it will be helpful to draw the trajectory by using polar coordinates. Is it possible by writing an OC program to calculate the corresponding x,y,z-values, using the calculated triples [(x,y,z)-values], converting these values to a matrix and plot the whole sphere? In a second step the triples (x,y,z) of the trajectory will be converted to a second matrix, too. How can I manage to visualize both the sphere including the net of latitudes and longitudes and the trajectory? Carsten [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.