Google Earth combines data from a variety of sources that differ in their origins, resolution, age, and geometric accuracy. The objective is to create a visually pleasing picture of the Earth's surface. At a support for professional use is not thought of. Depending on the accuracy of how the elevation data of the mainland were determined. And that can be very different and is only very tedious or not researchable. Therefore, a general accuracy level can not be specified on Google Earth.
Here some examples:
The mountain Ještěd (Czech Republic). I know the height of the parking lot at the TV tower. It is 1012 m. Display of GE is 980 m. Further see table.
The altitude errors of the satellite systems Shuttle Radar Topography Mission (SRTM) Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) are given as 6 m. GE is already sufficiently accurate for private use. Whether this is sufficient for a professional use I can not say. Maybe, if you have one or more reference points?
An elevation profile (such as the course of a mountain stream) can be done quite well with GE. Also goes for hiking trails. For example:
Open Google Earth and view the desired region on your screen. 1. Click on "Add" in the menu bar and then on "Path". 2. Now use the mouse to mark your path on the map. You can either set individual waypoints by briefly pressing the left mouse button, or hold down the left mouse button while drawing the path. 3. Enter a name for the new path and confirm with "OK". The path now appears in the left pane of the program window under "My Places". 4. Click the path there with the right mouse button and select "Show elevation profile" in the context menu. Google Earth will then show the contour line on the map and below that the elevation profile. 5. You can see the minimum, average, and maximum elevation of the graph and see the exact distance, altitude difference, maximum grade, and average grade. If you move the mouse pointer over the elevation profile, Google Earth will show you the exact location with the respective values on the map.
Thanks willi1. Very descriptive explanation. In fact my work is to identify catchment boundaries for drainage design for a Highway (Culvert and Bridges design) and is a professional work. Have seen some people use this for the same purpose but I have my own doubts about the accuracy if use how to express the accuracy.
Seems like it is not suitable for professional works.
anantharam: wonderful !! you are amazing everything worked out perfect . just, if possible, can you make some STOL planes like the twin otter? please? that would make flying to remote airfields and airstrips and airports like lukla and coucheville a LOT easier .
Sept 26, 2020 17:18:34 GMT
shadowdragon: GRAND TOUR OVERLAY RELEASED!!! It is in the "Other Places" section of the forum!
Sept 11, 2020 21:23:29 GMT
shadowdragon: Grand Tour Overlay finished. I absolutely love this massive planetary overlay set! It's like they are actual fully functional globes from Google! Will upload in a few days.
Sept 10, 2020 1:32:26 GMT
shadowdragon: Grand Tour update:Added atmospheric cloud layers to Venus, Titan, Triton, and Pluto.
Jul 18, 2020 4:12:21 GMT
shadowdragon: Now have models of Huygens, NEAR, InSight, Lunokhod, Luna, Surveyor, Chang'e, Yutu, Vega, and Venera landers placed in the correct locations and of the correct size. All added without bloating the planets tour overlay to over 10 mb.
Jul 17, 2020 23:19:00 GMT
shadowdragon: Vega Probes and Balloons now have models.
Jul 16, 2020 3:36:01 GMT
shadowdragon: Found models for the Luna spacecraft and Lunokhod to place in the correct locations. Luna 23 also got a model (It's not included in the Google moon base layers)
Jul 14, 2020 2:03:34 GMT
syzygy: ... Also me would love to see those in real for myself! (;
Jul 13, 2020 20:45:48 GMT
Namen: I really want to visit them
Jul 13, 2020 14:34:51 GMT
Namen: Burial mounds with entryway: A first circle surrounds the mound under which the burial chamber is located; a second encircles the entire building. Only the men are buried there, lying on their side, their heads facing east, and they all have the same direc
Jul 13, 2020 14:33:53 GMT
TheLedge: Welcome janikut, glad you like it.
Jul 10, 2020 11:30:43 GMT
syzygy: And do you remember where to find Themes in Profile settings? - Then "Which Forum Theme do You prefer?" *** Please VOTE! ***
Jul 8, 2020 14:08:12 GMT
TheLedge: I forgot this shoutbox was here. LOL
Jul 2, 2020 13:47:38 GMT
syzygy: Glad to welcome you janikut! Feel yourself the very best good around here, and please recommend us to others who might also be interested! (;
Jun 29, 2020 14:30:41 GMT
janikut: Hi to yall!! I love this style of forums and I'm amazed how much interesting stuff I find here when I'm bored. This site is amazing
Jun 29, 2020 14:03:48 GMT
shadowdragon: Ever wanted to view models of the space craft that landed on Venus on top of a color 16K mega resolution overlay? Coming soon with the Complete Grand Tour Overlay.
Jun 23, 2020 17:22:35 GMT
diane9247: Oh. I had no idea this was still here! Just stopping by, hello to all.
Jun 18, 2020 10:51:09 GMT