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geopoints create_geo ( number )geopoints create_geo ( number, string )
geopoints create_geo ( number, string, number )
geopoints create_geo( number, string, number, list )geopoints create_geo ( ... )
Creates a new geopoints variable with the given number of points, all set to default values and coordinates. It is intended that this function be used in conjunction with the set_xxx geopoints functions in order to populate the geopoints with data. If saved, the geopoints file will be in the `traditional' 6-column format. If another format is desired, supply a string as the second parameter, possible values being 'polar_vector ', 'xy_vector ', 'xyv ' and 'ncols'. If format 'ncols' is specified, then the number of value columns can be given as the third argument (default is 1). In this case, an optional fourth argument can be used to provide a list of names of the value columns.
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All these functions take two or three parameters: first one must be a geopoints variable. If three parameters are given, the second should be either the index or name of the values column to update. The last parameter defines the new values, and can be a number, a vector or a list of numbers (or dates, if set_dates()). If a number is given then all the corresponding values (latitude, longitude, level, or ...) are replaced by the given value.
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