Measure angle google maps free#
If you detect a bug or other inaccuracy, want to suggest a new feature or simply want to express an opinion about the site, feel free to do in the "Comment" section that follows (or directly with an email). You can enter the time in point A and the point B in order to obtain the average speed. If you know the ending point, and the average speed you can get the time to reach point B. Note: 1) function atan2(y, x) 2) the angles are in radiansĪfter calculating the distance between two points, you get the speed if we know the time spent to journey from point A to the B.Įnter the elapsed time in the format hh:mm:ss to get the average speed. To determine the destination point, knowing the starting point the direction θ and the distance d, we use the following formula:
Measure angle google maps mod#
Note: 1) ln = natural log 2) if Δlon > 180° then Δlon = Δlon (mod 180).ģ) operation a mod n 4) function atan2(y, x) 5) the angles are in radians To determine the direction from the starting point between two points on the earth, use the following formula: The angles used are expressed in radians, converting between degrees and radians is obtained by multiplying the angle by pi and dividing by 180.Ĭalculation of direction between two geographical points Given two points A and B on the sphere expressed by latitude (lat) and longitude (lon) you will have:ĭistance (A, B) = R * arccos (sin(latA) * sin(latB) + cos(latA) * cos(latB) * cos(lonA-lonB)) The formula used to determine the shortest distance between two points on the land (geodesic), approximates the geoid to a sphere of radius R = 6372.795477598 km (radius quadric medium), so the calculation could have a distance error of 0.3%, particularly in the polar extremes, and for long distances through various parallel. Search on map Click on search to open the webpage Earth Coordinate, here you obtain the latitude and longitude simply by clicking on the map, and save the value by the button save.Ĭalculating the distance between two geographical points Coordinates Coordinates format is the pair of latitude and longitude, with sign minus (-) for the direction south latitude and west longitude separate by comma symbol (,), here some example: Seconds is a double value without sign, from 0 (or 0.0000) to 59.9999. Minute is an integer value without sign, from 0 to 59.
Degree Degree format is composed of direction (N-S or W-E) and three sets of numbers separate by the symbols for degrees (°), minutes (’), and seconds (").ĭegree is an integer value without sign, from 0 to 90 for the latitude or from 0 to 180 for the longitude. Decimal You have to select a direction (N-S or W-E) and insert a number from 0 to 90 for the latitude or from 0 to 180 for the longitude (example 45.12345).
Content Format Calculating the distance between two geographical points Calculation of direction between two geographical points Calculation of the destination point Determinate speed or time elapsed Comment Back to top Contentįormat Value range Valid value for the latitude are from -90.0° to 90.0° for the longitude are from -180.0° to 180.0°, the + sign should be omitted, while the minus sign is not necessary if there is a radio component to select the direction N-S or W-E (Degree and Decimal format).
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