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Find the coordinates (generally latitude and longitude) of the geographic location you want to link; Select the template with the appropriate scale for the map to zoom into; Add the coordinates to the template using the template's format; Place the template reference into the article; Suggestions for accomplishing each step are below.
The lines from pole to pole are lines of constant longitude, or meridians. The circles parallel to the Equator are circles of constant latitude, or parallels. The graticule shows the latitude and longitude of points on the surface. In this example, meridians are spaced at 6° intervals and parallels at 4° intervals.
If a navigator begins at P 1 = (φ 1,λ 1) and plans to travel the great circle to a point at point P 2 = (φ 2,λ 2) (see Fig. 1, φ is the latitude, positive northward, and λ is the longitude, positive eastward), the initial and final courses α 1 and α 2 are given by formulas for solving a spherical triangle
with-line: Use ldx and ldy to indicate a distance away from the shape and provide a suitable line beltween the two. For example label-pos2=left,with-line| ldx2=-15| ldy2=-3 would draw a line from the mark to that offset, and position the label to the left of that new point. n-line: Works very much like 'with-line', but is for use with numbered ...
This formula calculates the 'True Hour Angle' which is compared to the assumed longitude providing a correction to the assumed longitude. This correction is applied to the assumed position so that a position line can be drawn through the assumed latitude at the corrected longitude at 90° to the azimuth (bearing) on the celestial body.
Informally, specifying a geographic location usually means giving the location's latitude and longitude. The numerical values for latitude and longitude can occur in a number of different units or formats: [2] sexagesimal degree: degrees, minutes, and seconds : 40° 26′ 46″ N 79° 58′ 56″ W
Category:Lines of longitude (Q32715183). See the instructions for more information. Administrators : If this category name is unlikely to be entered on new pages, and all incoming links have been cleaned up, click here to delete .
A prime meridian is an arbitrarily chosen meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°. On a spheroid, a prime meridian and its anti-meridian (the 180th meridian in a 360°-system) form a great ellipse.