On Dec 9, 11:50 pm, snake211 <[email protected]> wrote: > Hi all, > > I have been studying Google Maps Javascript API v.2 and Mike's > tutorial page (econym.org.uk/gmap/) has been very very helpful. > > While I followed his Euclidean projection source code (econym.org.uk/ > gmap/example_custommapflat.htm), I got a question which I cannot > solve. This may be because of my poor knowledge about coordinate > systems. I would be very grateful if anyone could give me an aid. > > In his code (sorry, I used Google Chrome's "view-source" option to > read the code) to draw Euclidean map with markers and a polyline, Mike > created the Euclidean Map Type first. Then, when drawing the marker > overlay, he wrote as follows: > > var points=[]; > for (var i=-85; i<85; i+=7) { > var P = new GLatLng(i, i*2); > map.addOverlay(new GMarker(P)); > points.push(P);} > > map.addOverlay(new GPolyline(points, "#FF0000", null, 1)); > > The part I cannot understand is "var P = new GLatLng(i, i*2);". Could > anyone please teach me why we have to set the longitude twice the size > of latitude to draw 45 degree line?
The line goes from -90,-180 to +90,+180 ... -- Larry > > Thank you so much in advance. -- You received this message because you are subscribed to the Google Groups "Google Maps API V2" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-maps-api?hl=en.
