Download Contours From Google Earth HOT!

Before clicking Generate, be sure to set the Output contour interval to 0.5m (shown below in red). This way, we will be able to compare the contours to the ones generated in Google Earth. Once the Output contour interval is set to 0.5 meters, click Generate.

The reason for this is because Equator generates the contours from 350,000 LiDAR points whereas the Google Earth contours had around 3000 points. Below you can see the LiDAR survey points used to generate the contours in Equator.

Download Contours From Google Earth

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I like the fact that you can import a satellite image into Formit so that you can work over it but it would be nicer if you could also import the Google Earth contours. Is this possible? If not it would be a nice feature to have so that one could work directly on the existing sites lay of the land instead of a flat satellite image.

Hi, BING maps in Europe and the Czech Republic are completely useless! They have bad terrain, bad buildings.

Feedback for BING maps is easy, do it all over again and properly!

So again my question ...

How to get to FormIt Pro from Google Maps or Google Earth.

If you've got access to some other application that uses your preferred satellite/terrain data from Google, you may be able to import that data into FormIt. For example, if you have a SketchUp model containing the data you need, you can open or import that model into FormIt with no data loss.

My goal is to plot a map using the Earth Relief Grid data and then plot some filled contours in the ocean. Would anyone please help me figure out what I did wrong? My code can only produce a map. The contour did not plot at all. Many thanks!

I regularly am overlaying contour lines onto google earth imagery in my work as a landscape planner. Sometimes I use lidar imagery and shaded relief maps that I source from USGS Earth Explorer and Caltopo.

I never have a problem finding 20 foot or 10 foot contours, but I see that others often work with 5 foot, 2 foot, or 1 foot contour lines. Where can I consistently find contour maps with this degree of precision? Are there any free sources? Am I missing something on the Earth Explorer or USGS Interagency Elevation Inventory? If I could reliably source 2 foot or 1 foot contours, it would change the game for me.

Okay, now that you have drawn some contours, let's figure out another way toget the data into your drawing. If you have a copy of GoogleEarth, you can use it's internal terrain model toget a decent approximation of your site's contours even without a contour map.I did this process on my site (see image above) to give me a comparison betweenthe methods, and found that they're about the same. In my case, I actually mowed(with a lawn mower) contour lines onto my place and then Google's satelliteimagery snapped them, so I have real contour lines on my map, likepermaculture crop circles. This is not something you should rely on being ableto do, by the way... However, it does give me a handy way to show thedifferences between data and ground truth.

Marking contours with Google Earth is a simple, but tedious, process. Here'swhat we're going to do: use the elevation box on the lower right of the windowto find spots that are the same elevation on our map, and draw lines betweenthem. Then, move to another elevation and repeat.

There is only one subtlety with doing a good job on this: picking where youdraw the line. Google Earth gives you elevation data, but it doesn't give youmuch precision on the elevation measurement (meaning you don't get a lot ofdigits after the decimal point, at least in a convenient-to-use way). What thatmeans in practical terms is that there's a whole range of space within whichGoogle Earth will tell you you're at the same elevation. On my site, the contourstypically could have gone anywhere within about a 20 foot wide strip and stillgiven the same readout for elevation.

Obviously, we want to do better than that. The trick is to tease out a littlemore precision by drawing our contour lines right at the border between oneelevation level and the next. For example, if you're cruising around with themouse at elevation 200m, there's a pretty big space where it will read as 200meven though the actual ground is not at 200m. However, the region where itchanges from 200m to 201m is very tight, and will follow the actual contours asclosely as possible given Google's data set. So that's what we're going to do ina nutshell - start out with your mouse at an elevation just below where you wantthe contour, then slowly move it uphill (on the site) until the point where itswitches to your desired elevation. That's the place to draw the contour. Thisis a little more tedious than just drawing at any spot where the elevation readsright, but it'll pay off big time in precision.

The last step of this tutorial is the same as the previous one (clickhere). You'rebasically going to take a screenshot of the contour map you just created, thenimport it into Inkscape and trace over the contours with the bezier tool, thensmooth it all out.

What you can see there is that my pond is not in their data set (otherwise thecontour would follow the shore line) - this may be a pitfall of this approach ifyour site has been modified in the time between when they took the terrainsurvey and now. Also, the entire center portion of the site shows up on GoogleEarth as having the same elevation. This is not the case - the hill is not flaton top. In fact, the elevation data they have is missing at least three feet ofelevation on the top of that hill (there should be another contour there).Finally, if you look at the bottom right part of the picture, you can see that Ihighlighted the places where I mowed contours based on survey transitmeasurements. The contours Google Earth gave me were decently close to this, soI took that as a sign of encouragement.

If you are a Sketchup user, there's a pretty cool way to do this process thatyou might like better than what I've shown here. Check out this link to ayoutube tutorial on contours with Sketchup+Google Earth.

On our website, you can get 1m contour maps available as an additional layer to OS MasterMap in DWG and DXF formats. Please also check this extensive guide we have on contours where we explain in detail what contours are and how you can use them to add value to your plans.

we have 6 pt / m^2 lidar data covering the entire province of New Brunswick, 72,000 km^2. From the point cloud data we generated a 1 metre bare-earth DEM. We are in the process of creating contour lines from the DEM. So far we have created contours with a 50 metre interval and a 10 metre interval. We are serving this data as a map service. Unfortunately, at small scales it is very easy to exceed the 600 second timeout on the map service. I suspect the problem causing the slow draw times is the density of vertices along our contour lines and the contour labelling. Using a 1 metre DEM as source data for the contours should lead to one vertex for every cell the contour line crosses which would be close to one vertex every metre along the contour. Currently, our stop gap measure is to use a scale threshold so the contours do not draw when zommed out beyond 1:150,000. We are considering eliminating contour labels at smaller scales and producing a "low resolution" version of our contour lines for use at smaller scales. The low resolution contours would have fewer vertices. But I am not sure of the best method to accomplish this.

I've done the method of downloading a DEM from a database, generate contours on Global Mapper, QGIS or ArcGis, and upon exporting them to DXF, I can open them on Civil 3D and build a surface, but the base elevation starts from 0m so I can't work with that since I need the real elevation to match my field work.

I've also tried doing it with Google Earth by building a path, saving that to .kml, make that into coordinates and elevation data through GPS Visualizer and then making a DEM from that on the above mentioned software, but this way I can only generate contours and visualize them properly as vectors, but upon generating a surface from them the coordinates, elevation and size are all over the place.

I want to extract the elevation values and generate contour lines from SRTM DEM at a 100 m intervals. However, I was able to create the contour lines using a code available here. But I am not able to interpret the exported result (shapefile) format. The attribute of the exported result is shown below.

I am not able to understand, what the field "count" mean. Also, I want to extract the elevation values corresponding to each contour line. Is it possible to extract the elevation values in Google Earth Engine using the generated contours?

This is actually a good default value for the reducer. The "label" corresponds to the value from the first band, i.e. the value of the "homogeneous region". In your case, it actually corresponds to the elevation value, in integer format. The DEM you used seems to actually come in integer format anyway (although it is presented as float). Combining this with the fact that you are generating the contours at 100m of elevation steps, in this specific example the labels correspond exactly to the elevation value you want.

I prefer to save the surface as a TIN and draw the contours in Civil. Also, that will allow you to run some of the surface routines in the menu I previously shared and compare surfaces against each other. Make sure you save your scene as a P3D file as well. I like to save it once as soon as I get everything imported and setup before I start editing. Then again as a different file once I think I am done. Just for convenience if I need it for different purposes.

Gotchya, I imported the pointcloud from a .las file. I then filtered the points to get rid of the vegetation and just smooth the ground out in general. After this, I created a surface from the points and was able to get smooth contours with the new surface.

It is possible to get contour data from Google Earth and produce a contour map to develop a landscape plan for a site, no matter what the size. It is expensive to employ a team of surveyors to produce what will be a very accurate base map. As an alternative, it is possible to extract 3D information from Google Earth and, using other software tools, make a contour map of the site with certainly enough contour information to produce a concept design. ff782bc1db