<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div></div><div>Hi David,</div><div><br></div><div>I’am an archaeologist working in Québec. If you vectorized the map in a local CRS, all you need to do is do a « save as » and change the CRS (coordinate reference system) that is in Longitude Latitude. If your map is not georefenrenced (that is, you just scanned the map and did not use a CRS, that is more complicated but not impossible. I usually fixe that do in a CAD but I am sure you can do it in QGIS. We could talk if you want and I could help you out figured the next steps and steps to avoid this problem (like georefereing the raster map before you start) .Send me an email directly.</div><div><br></div><div>You could look at this also.</div><div><a href="https://gis.stackexchange.com/questions/136817/qgis-moving-the-layer-all-features-using-vector-affine-transformation">https://gis.stackexchange.com/questions/136817/qgis-moving-the-layer-all-features-using-vector-affine-transformation</a></div><div><br></div><div>Nicolas</div><div><br>Le 7 juin 2018 à 20:49, David Hochfelder <<a href="mailto:dhochfelder@albany.edu">dhochfelder@albany.edu</a>> a écrit :<br><br></div><blockquote type="cite"><div><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><div dir="ltr">Hi All,<div><br></div><div>I am new to QGIS, so this may be a newbie question easily answered by the more experienced.</div><div><br></div><div>I'm working on a historical GIS project to remap an area of Albany, NY demolished for urban renewal in 1962. I've succeeded in vectorizing a historic map of the area (~1960), but the coordinates are not in lat/long form. I see that there are plugins for converting tables of specific coordinates, but I want to convert the entire map continuously. </div><div><br></div><div>This area no longer exists--all the buildings and streets were cleared for the Empire State Plaza state capitol complex.</div><div><br></div><div>My end goal is to use the rectified map as a way to geotag historic photographs of particular buildings.</div><div><br></div><div>Is there a way to convert the coordinates in a continuous fashion for the entire region?</div><div><br></div><div>Thanks for your help.</div><div><br></div><div>Dave Hochfelder<br clear="all"><div><div class="gmail_signature"><div dir="ltr"><br><div><br></div><div>David Hochfelder</div><div>Associate Professor</div><div>History Department</div><div>Social Science 060B</div><div>University at Albany, SUNY</div><div>Albany, NY 12222</div><div>518-442-5348</div></div></div></div>
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