Basic Georeferencing
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instead of finding points in the image to reference against. Try this.
Make a shapefile in ArcGIS , and populate it with 4-5 points in the area you want to georeference. Transfer the points to Google using the Layer to KML tool. Open Google and make the points transparent,barely wisible, (to minimize noice in the resulting image). Then u go ahead and export the image from Google, and U will now have referensepoints in the image and in your shapefile.
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Nice tutorial, but you and those who watch this should be aware that by cropping out the copyright part from the Google Earth screen shot violates the Google Earth terms of service. The copy right is typically located in the lower middle of the image in Google Earth. It usually has "Google" and also the image provider's info such as "GeoEye" or "Digital Globe". I think you could get away with it as long as you credit them on your map, perhaps in the title block or as a disclaimer note.
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@anunarmedperson you need to set the decimal places in the data frame properties. should allow you to be more precise.
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good afford for showing a referenciation in ArcGIS. But please make sure that the clipped image from google maps is a small one, due to topographic problems and the reference scene. One have to know which is the reference in Arcmap...
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@anunarmedperson Have you tried using dots instead of commas?
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Hey : )
a great, detailed tutorial, like it! I have one problem, though. After starting editing the imported shape file I can only define X and Y points coordinates with no digits after the comma, e.g. 70 and 30 instead f 70.0232 and 30.4534. Same in the link table - manual input of coordinates with 4 digits after the comma is being rounded -up to an integrer. How come?
Thanks,
Maciek
anunarmedperson 1 year ago
@anunarmedperson I have not encountered this problem before, but that doesn't mean we can't fix it. What kind of coordinate system are you using?
GISTutorials 1 year ago