Measuring areas and distances in Google Earth
Google Earth is a very useful software. You can not only view various places but can also measure the distance between them. Isn't that amazing?
Google Earth, a wonderful software, provides various tools that can be used for estimating sizes and measuring distances. Depending on the Google Earth version that you are using, you can access following tools.
1] Measuring with polygon or circle radius (Google Earth Pro)
2] Measuring with path or line
You can use Ruler window for measuring circumference, area and length as follows:
1] Position the imagery that you wish to measure within 3D viewer. Ensure that you view the Earth planet from top down. The terrain must be turned on to get the best accuracy. Lengths are always calculated using longitude or latitude coordinates and doesn't consider accuracy
2] From tools menu, you need to select Ruler. When you select this option ruler, dialog box will appear. You need to move the dialog box and place it on your screen in such a way that it does not obstruct 3D viewer.
3] Select the type of shape that you wish to measure with. All Google Earth versions can easily measure with Path or line. Here a line consists of 2 points that are connected by straight line. Users of Google Earth PRO can measure using a circle or a polygon
4] Select your unit of measure to calculate area, radius, perimeter, length as applicable
5] Click on 3D viewer for setting the beginning point of your shape. Continue clicking the mouse until the shape, path or line measures that region. For circle, you have to click at the centre and then drag to define that circle. A red dot will indicate the starting point of your shape. A yellow line will connect to it as the mouse is gradually moved. An additional click will add new line to that shape. It all depends on the tool that you choose. Total units for that shape are already defined in Ruler dialog box. You can also select any other unit of measure.
While you are measuring the length, or calculating the area, you can modify the shape as well as reposition the viewer. Units of measure available in Google Earth are meters, centimetres, feet, inches and many more. You can measure the area in square mts, square kms, square feet and much more.
You can also clear all the measuring shapes from Google Earth viewer by simply clicking on Clear All button that is located in Ruler dialog box. When you are using measuring mode, mouse is disabled by default. However, the mouse can be enabled by simply checking the mouse navigation checkbox. When mouse is enabled, mouse navigation and measuring work simultaneously. You can click and hold for adding a new point. You can also click and drag in order to move Earth. If you wish to remove any point from an area shape or a path, choose a point and then press Backspace key.
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