Unfortunately, while many other Languages have arctan functions that have "numerator" and "denominator" inputs to handle the case of zero denominators. For coordinate conversion, NCAT allows conversion between lat/long/height, SPC, UTM, XYZ, and USNG systems. If the numerator is positive, then the arctan value is pi/2, while if it is negative, the arctan value is -pi/2. Select action: Results: input lat lon UTM/UPS MGRS GeoConvert (version 2.1.1) converts between geographic (latitude and longitude) coordinates. Horizontal+height XYZ Select the type of horizontal coordinate : Geodetic lat-long SPC UTM USNG + Leaflet Sources Esri. Note that LabVIEW's arctan function needs to be supplemented with a "guard" for a zero denominator.
Latitude = arctan (Z / sqrt(sqr(X) + sqr(Y)) Longitude = arctan (Y/X) (note that the arctan is defined even if X = 0) The change is processed interactively once a lat-long is converted DO NOT click the Submit button. Furthermore, as long as all of X, Y, and Z are not all zero, these equations can easily be inverted: Click blue bar (s) to expand/collapse Converted Coordinate Reference Frame: You may change the default UTM zone. Note your equations, given R, Latitude and Longitude, any values of these quantities will give finite values for X, Y, and Z. The equations you've cited are the relationships that allow you to convert between Cartesian coordinates (X, Y, Z) and Spherical Polar Coordinates (Radius, Latitude, and Longitude, usually expressed with the Greek characters rho, theta, and phi).
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