This item may be available elsewhere in EconPapers: Search for items with the same title. Windows users should not attempt to download these files with a web browser.Ĭitations: View citations in EconPapers (19) Track citations by RSS feed Birth is the order of birth (i.e., 1 is first), age wt and sex are the child’s age, weight and sex. Here is a file containing information about the kids in three families. The module is made available under terms of the GPL v3 (). We will illustrate this using an example showing how you can collapse data across kids to make family level data. Note: This module should be installed from within Stata by typing "ssc install geodist". Keywords: geodetic geodesic Vincenty great-circle ellipsoid distance (search for similar items in EconPapers) geodist can also calculate great-circle distances using the haversine formula. If one or both the members are missing, the command returns NULL. Given a sorted set representing a geospatial index, populated using the GEOADD command, the command returns the distance between the two specified members in the specified unit. By default, geodist implements Vincenty's (1975) formula to calculate distances on a reference ellipsoid. Return the distance between two members in the geospatial index represented by the sorted set. mqtime: A stata tool for calculating travel time and distance using MapQuest web services. Statistical Software Components, Boston College Department of Economics. Geodist calculates geographical distances by measuring the length of the shortest path between two points along the surface of a mathematical model of the earth. GEODIST: Stata module to compute geodetic distances. Statistical Software Components from Boston College Department of Economics GEODIST: Stata module to compute geographical distances
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