Today I’ve begun geocoding my maps in Google Earth. Using the Image Overlay tool, I’ve diligently tried to match my renderings with the aerial/satellite image displayed in Google Earth. In most cases I am using the same imagery that Google Earth is and in other cases, like DC, I am placing my maps (derived from older USGS imagery) over the newer imagery. With each map I add to Google Earth, I also embed a link “Send Comment” to each respective blog entry for added interactivity. I’ve completed a few of my series and the results are awesome. You can now fly around the world and discover my maps…
I am making two KML versions for Google Earth because I have already run into a problem with using the Image Overlay feature– I’ve made too many maps! After loading all of the maps, Google Earth slows down to a crawl. The work around is to make one layer with basic icons without the image overlay and have the map load within the icon’s window with a link to it’s respective Image Overlay file. This prevents the Google Earth from loading all of the maps at once, and it allows me to maintain a comment link to my blog. What I hope to have in the end is 2 master KML files- one personal & one for the web, and then produce an Image Overlay KML file for each map for the web. The personal file used for presentations and the web will be for what was described above.
To finish off this task, I now need to go back through my blog and add the Image Overlay KLM file for each respective blog entry (to make discovery bi-directional, as in you can find the map first on my website or within Google Earth). I will add a footer, “View this Map in Google Earth,” and have the Image Overlay KML link.
First up will be the master Image Overlay file from which I can extract the individual KML files for the blog entries, and then lastly make the layer for the public. The public layer is going to take the longest, but it will be the most useful. This all sounds like a lot of work, and I do believe it is, but results will be rewarding- I will have taken Google Earth to my level (wherever that may be).