sph2cart

Contents: Description, Arguments, Usage, Examples, Sub-Functions, Related Functions, Source Supported Under Version: > 1.22 Current .dvrc Version: 1.29 Description Convert spherical coordinates to Cartesian (rectangular) Arguments and Return Values Parameters: Three inputs specifying the radial, latitude, and longitude coordinates, respectively, with angles in degrees. Return Value: An array specifying the x, y, and z coordinates, respectively, with angles in degrees. Usage Syntax: sph2cart(r, latitude, longitude) All inputs should be numeric. These are not the conventional spherical coordinates, but they should be more useful for people doing work in planetary coordinates. Zero longitude corresponds to the x-axis; 90 E is y-axis. Zero latitude is the equatorial (xy) plane. This function can handle array inputs, but when entering them, you will probably want their x-dimensions to be one, so that the returned values are easier to read. The function concatenates the output coordinates along their x-axis. When sph2cart() is entered without any arguments, it prints its description, as shown below. Examples dv> sph2cart() Convert spherical coordinates to Cartesian (rectangular) sph2cart(r, latitude, longitude) returns (x, y, z) where r is the radial coordinate, and latitude and longitude are in degrees. r is optional; if only given two inputs, the function assumes they are latitude and longitude, respectively, and sets r to 1. Input angles must be in degrees. Longitude must be east-positive. Zero longitude corresponds to the x-axis; 90 E is y-axis. r, latitude, and longitude must be entered as separate arguments To make the output easier to read, inputs should only have one row. S.Marshall 10-30-2009 0 dv> sph2cart(1000, 0, 45) 3x1x1 array of float, bsq format [12 bytes] 707.106750488281 707.106750488281 0.00000000000000 dv> sph2cart(1000, 45, 45) 3x1x1 array of float, bsq format [12 bytes] 499.999969482422 499.999969482422 707.106750488281

DavinciWiki Mini-Nav Bar Contents Functions Function Categories Common Procedures Glossary Download Davinci Change Log News Mailing List Contact Developers davinci-dev [AT] mars.asu.edu All other topics See navigation on the left Major Sub-Functions cosd sind Related Functions cart2sph math.dvrc sph2cart() Recent Library Changes Change Log Created On: 11-18-2009 Modified On: 11-19-2009