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I have coordinates for an area in Japan, where the survey has used the coordinates -8073.896, 63828.792. I'm not sure what coordinate system this is however I'm trying to convert this using online software to correct for JGD2011 however this plots points with a ~30km offset from where they should be.

Does anyone know how to fix this, or convert the coordinates so that they can be used in Google Earth?

  • Do you know in which prefecture is it located? – ahmadhanb Sep 26 '16 at 8:49
  • Its in system 10, in the Aomori Prefecture – Elliot Sep 26 '16 at 8:55
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I used QGIS to set the coordinates based on the information you gave us. I did the following:

  1. I created a CSV File with the following information:

    ID,X,Y

    1,-8073.896, 63828.792

  2. I loaded the CSV into QGIS. When the point appear in QGIS, the CRS is WGS84 by default, which is not correct.

  3. Right-click the point and go to Set Layer CRS and choose `JGD2011 / Japan Plane Rectangular CS X, then save layer as to a new shapefile with the new coordinate system to become permanent.

  4. Load the new saved Shapefile from Step 3, and save it again with a new shapefile of CRS WGS84.

  5. Open the shapefile created from Step 4 in Google Earth, and the output should look like this:

enter image description here

  • I suggest to start off in QGIS with Settings -> Options -> CRS, CRS for new Layers should be set to Prompt for CRS. That avoids any kind of wrong default CRS assignment. – AndreJ Sep 26 '16 at 17:59

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