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revised Computing distance of a georeferenced .jpg to each polygon (town) in a shapefile
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comment Computing distance of a georeferenced .jpg to each polygon (town) in a shapefile
Fetzer: It says double. The coordinate system of the shapefile of points is GCS_North_American_1983, projected USA_Contiguous_Albers_Equal_Area_Conic. The coordinate system of the shapefile of the road is GCS_North_American_1983.
Aug
16
comment Computing distance of a georeferenced .jpg to each polygon (town) in a shapefile
ako: After I've digitized the road, could you please walk me through how I can compute the distance? I've tried both Near and Spatial Join but to no avail. I converted the shapefile of interest to points, and for each point, I get a distance of -1
Aug
16
comment Computing distance of a georeferenced .jpg to each polygon (town) in a shapefile
Fezter: After I've digitized the road, could you please walk me through how I can compute the distance? I've tried both Near and Spatial Join but to no avail. I converted the shapefile of interest to points, and for each point, I get a distance of -1.
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revised Computing distance of a georeferenced .jpg to each polygon (town) in a shapefile
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revised Computing distance of a georeferenced .jpg to each polygon (town) in a shapefile
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revised Computing distance of a georeferenced .jpg to each polygon (town) in a shapefile
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Aug
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comment Computing distance of a georeferenced .jpg to each polygon (town) in a shapefile
Fezter: I have created the new shapefile. It should be of type polyline? How do I add it to the map? In the Table of Contents I have 3 files: the .jpg, the new shapefile, and the original shapefile used to georeference the .jpg
Aug
12
comment Computing distance of a georeferenced .jpg to each polygon (town) in a shapefile
Kevin: I am trying to follow those directions (in addition to the ones you had supplied earlier). I am stuck with the Editing and Creating Features part. I have the Create Features box on the right hand side of the screen as that link shows, but I'm not able to get anything to pop up inside of it. What should I be doing with edit in order to get things to be generated within the create features? So I guess if you can say anything more about the digitization process that would be much appreciated. I don't understand what exactly I should be doing in edit as I'm unable to replicate the link.
Aug
12
comment Computing distance of a georeferenced .jpg to each polygon (town) in a shapefile
Fetzer: in option 2, how does that compare to georeferencing? As I stated initially, I do feel comfortable overlaying the .jpg with a shapefile and georeferencing the .jpg to that shapefile so that it is stretched appropriately. Regardless of whether there is a better map out there, I do have another example for which I do have to rely only on the map that is given, so I am interested in learning the general approach to this problem. The other map is black-and-white, but even there it comes back with multiple layers depending on how dark parts of the scan are.
Aug
12
comment Computing distance of a georeferenced .jpg to each polygon (town) in a shapefile
Good idea Fezter! I hope the attached image helps. How exactly could I download such an image as a vector?