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3

If you click "Fit to Display" in the Georeferencing menu, the un-georeferenced Image will be moved to the current window location making it much easier to georeference.


3

If this is the walkable food data: https://www.opendataphilly.org/dataset/philadelphia-food-access/resource/07f115d1-5b8e-4620-9720-9c310ba29896 Download the zipped shapefile (or kml), go to your data dashboard on Cartodb (http://yourname.cartodb.com/dashboard/datasets), and drag the zipfile onto the page: It's already "georeferenced" - but maybe this ...


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AffineWarper Performs warping operations on the spatial coordinates of features. It is used to adjust a set of observed input features according to a spatial transform defined by a set of control vectors. This transformer computes an affine (scale, rotation, and offset) transformation based on Control vector features and applies this transformation to ...



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