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Gnomonic projection: Difference between revisions
→Gnomonic Projection
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* <math>(x,y) \in (-\infty, \infty) \times (-\infty, \infty)</math> Cartesian coordinates. | * <math>(x,y) \in (-\infty, \infty) \times (-\infty, \infty)</math> Cartesian coordinates. | ||
<math>x = \frac{\cos(\ | <math>x = \frac{\cos(\phi)\sin(\lambda - \lambda_0)}{\cos(c)}</math><br> | ||
<math>y = \frac{\cos(\phi_1)\sin(\phi)-\sin(\phi_1)\cos(\phi)\cos(\lambda - \lambda_0)}{\cos(c)}</math><br> | <math>y = \frac{\cos(\phi_1)\sin(\phi)-\sin(\phi_1)\cos(\phi)\cos(\lambda - \lambda_0)}{\cos(c)}</math><br> | ||
where <math>c</math> is the angular distance of the point <math>(x,y)</math> from the center of the projection, given by<br> | where <math>c</math> is the angular distance of the point <math>(x,y)</math> from the center of the projection, given by<br> | ||