You can use Power Map to explore data with any type of map by creating or importing a custom map. For example, you might want to create a custom map to show traffic for transportation routes, like the ones on this fictional island.
           
To do this, you need to have:
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A picture in .jpg, .bmp, or .png file format. For example, a picture of a floor plan or a public transit routes map.
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Data that relates to the picture that Power Map can plot on your custom map by using an XY coordinate system.
Tip: If you don't have X and Y data yet, try using Microsoft Paint to record the pixel position of items in your picture and enter them in X and Y columns on your worksheet.
 
Here's how you can use those items to create your custom map:
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In Excel, open the workbook that has the X and Y coordinates data for your image.
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Click Insert > Map.
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Click New Tour.
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In Power Map, click Home > New Scene.
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Pick New Custom Map.
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In the Custom Maps Options box, click Browse for the background picture
 , locate the picture you want to use, select it, and click Open. - 
              
Adjust the X and Y coordinates as needed.
You can also:
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Flip the axes by checking the Swap the X and Y axis box.
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Click AutoFit to get the best fit.
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Check the Lock current coordinate values box if you don't want the values to be changed.
 
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Click Apply to accept the selections you made, and click Next in the Layer Pane.
You're now ready to use Power Map as you would with any other geographical data.