Sometimes in GEarth we want to visualize a connection between one place and another, a line looping between the two places is a good way of doing this as used by the 'Map the Fallen' project shown in the screen shot above.
To produce a loop:
To produce a loop:
- Download this Excel spreadsheet file
- Produce 2 placemarks where you want the ends of the loop to be.
- Right click the first and select properties. Copy the Latitude and Longitude of the placemark into the yellow boxes of the 'Start' row of the spreadsheet.
- Reapeat 3 but for the second placemark and put in the 'End' row
- Select the 'Out' tab at the bottom of the sheet and copy the text in the cell with the text in.
- Select the temporary places folder in GEarth by clicking it > right click > paste
- Your loop should appear
- Right click it > Properties > Style Color tab to change its look.
Design Points:
- Details on how to color and choose the right thickness for lines in this lines Video I did a while back.
- I think you have to be very careful not to use too many lines at one time so as not to overwhelm the user.
- Loops would be a great way of showing a one to many relationship, i.e. the place of manufacture of the parts that go to make up a laptop connected to the factory where they all assembled.
2 comments:
How can I do this with hundreds of coordinate pairs simultaneously?
You need to work out how the code I've produced works and extend my spreadsheet. Not that complex.
Best
Richard
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