4D Gondola in Google Earth

Steven Ho, whose work we often cover has recently updated a Google Earth animation he first created back in 2007 showing the Maokong Gondola of Taipei. We covered his original 2007 version in this … [Read more...]

Animating Landsat imagery in Google Earth

Last week we created a KML file to easily preview the latest Landsat imagery. The data comes from Amazon Web Services (AWS), which hosts a large amount of Landsat 8 imagery and also includes some … [Read more...]

Landsat imagery coverage

Last week we looked at Sentinel imagery coverage and today we are doing the same for Landsat imagery. First, note that we are discussing Landsat 8 imagery only, as Landsat 7 imagery is not currently … [Read more...]

How to quickly preview the latest Landsat imagery

Earlier this week we created a KML file to allow you to preview the latest Sentinel imagery. We used the fact that Sentinel imagery is available via Amazon Web Services (AWS). Given that Landsat 8 … [Read more...]

More fun with contours

Last week we had a look at drawing contour lines using the Google Maps Elevation API. Because of restrictions on what you are allowed to do with Google's elevation data, we chose not to create KML … [Read more...]

Louisiana flooding as seen in Sentinel imagery

As we mentioned in Monday's post, southern Louisiana is experiencing major flooding. One of the worst affected areas is to the east of Baton Rouge, where the Amite River has burst its banks, flooding … [Read more...]

Sentinel imagery coverage

Yesterday we created a KML file that allows you to preview the latest sentinel imagery using a KML file of all the sentinel tiles. We noticed that some tiles do not have any images available, so we … [Read more...]

How to quickly preview the latest Sentinel imagery

[ Update: There were a few bugs in the first version of the KML most notably it reported no imagery for tiles starting with '0'. If you intend to use it, please re-download. We have also slightly … [Read more...]

Drawing contours with altitude data

Thank you to GEB reader 'DJ' for suggesting this idea in the comments of our post on simulating lakes. It turns out that the algorithm for drawing contours given a regular array of altitude data is … [Read more...]

Rio 3D imagery and Google Earth’s elevation data

We mentioned in our post on simulating lakes that Google Earth's elevation data is often very inaccurate in mountainous areas. When looking around the 3D imagery of Rio de Janeiro, where the Olympics … [Read more...]