Distance calculators are instruments that calculate the distance that separates two or more points on the map. You can decide on the distance unit you want to use, whether kilometers, meters or miles. Usually, you can just type in the names of the places whose distance from each other you’d like to know, and then click some button to show results. Postcodes and addresses may be used as well.
How Distance Calculators Work
Once you click the search button, a search will be performed to look for the place you have indicated. First, an internal list of common locations will be searched. If this isn’t fruitful, a search will be done using Google Maps API GlocalSearch. If still unproductive, you will be requested to indicate the exact location of the area by clicking on the map. This will allow you determine the distance between the two points, and the location will be saved in the internal database so that it can be located when someone searches for it in the future.
Getting Down To Basics with Tips
When a result has been returned, you can save the URL and use it for your own reference, or to give it to a friend or family member who may also need it.
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How Distance Is Determined
The distance between any two points is defined as the shortest separation in between them, where the two are closest to each other. This logic is utilized by any distance-calculating geoprocessing tool.
Input data in an equidistance projected coordinate system lead to the most accurate distance measurements. Although distance calculations can always be done no matter the coordinate system used, the results can be inaccurate or even insignificant when data is in a geographic coordinate system or a wrongly selected projected coordinate system.
There may be multiple features that are equally closest to another feature. If this occurs, any of the equally closest features can be indiscriminately chosen as the closest. When a feature contains or is contained in another feature, their distance is automatically zero. A distance of zero is calculated in a scenario where there is at least one x,y coordinate shared between them.
Hence, with two features intersecting, overlapping, crossing, or touching, distance is zero. Always, distance is calculated to the outer edges of a polygon feature, and not to the center. As earlier noted, if a feature is contained inside a polygon, the distance between the feature and the containing polygon is calculated as zero. The distance between any two features remains the same regardless of the one being measured to and from.
Basic Distance-finding Operations
Determining distance relies on the geometry type of the features, and also on other factors such as coordinate system. However, three basic rules dictate how distance will be calculated. First, the distance that lies between two points is the straight line linking the points. Second, point-to-line distance can be the perpendicular or the closest vertex. Finally, determining the distance between polylines are segment vertices.