Just a quickie, because I've been asked about geospatial PDFs.......
A geospatial PDF contains information that is required to georeference location data. When geospatial data is imported into a PDF, Acrobat retains the geospatial coordinates. With the coordinates, you can view and interact with the PDF to find and mark location data.
Geospatial data can be either vector or raster based or a combination of both. After you import geospatial data into Acrobat, you can use the data in a variety of ways:
* Find and mark location coordinates.
* Measure distance, perimeter, and area.
* Change the coordinate system and measurement units.
* Copy location coordinates to clipboard, and then use them to show locations in several web mapping services.
* Register a raster image to create a geospatially aware PDF.
You can create a geospatial PDF in one of these ways:
* Opening a geospatially enabled TIFF (GeoTIFF) or JPEG 2000 file
* Georegistering a PDF map or scan of geospatial data
When you open an imported file, measurements, point position, and length are displayed in geographic coordinates, which you can change, measure, and mark up. You can also assemble a PDF map from a variety of sources.
Open GeoTIFF and JPEG 2000 files
GeoTIFF files and JPEG 2000 files are raster images that you can import as new documents or as new layers to an existing document. Acrobat preserves the geospatial coordinates embedded in the file. These files retain their geospatial data when they are imported. If you import these files to existing documents, their coordinate system is converted to the coordinate system of the document.
1. Choose File > Create PDF > From File.
2. Select the geospatially enabled file to import.
3. Select settings, and then click OK.
You can import a shapefile as a new layer to an existing PDF. The shapefile must overlap with the current PDF map. Otherwise, it is not imported. If it overlaps only partially, only the part that overlaps the current PDF is imported.
A shapefile consists of several files with differing filename extensions. Acrobat requires both the SHP file and the DBF file for importing.
1. Open a PDF map, and choose View > Navigation Panels > Layers.
2. Select Option on the Layer sidebar and click Import As Layer.
3. Browse to the SHP file and select it.
4. Click Settings and change the Line Properties to a solid line and the line color to blue.
Georegister a PDF map
Georegistration enables you to take any PDF map and add coordinates that map to real-world locations. To georegister a map, you need the boundary coordinates of the map (latitude and longitude). You also need the projection scale on which the map is based. With this information, Acrobat can accurately transform the map to WGS 1984, the standard reference frame for earth.
1. Open a PDF that contains a map image, and note the projection that the map is based on.
2. Choose Tools > Analysis > Geospatial Registration Tool
3. Type a name, and then draw a neatline around the perimeter of the map.
A neatline separates a map from the rest of the page. It is commonly drawn around the map borders. The neatline defines the map area and allows you to remove parts of the page that are not relevant to the map. Or, select Use Page Bounds As Neatline to use the page border as the neatline. Move around the PDF by using either scroll bars or arrow keys. However, selecting another tool, such as the Hand tool or Zoom tool cancels the registration process.
4. Click one corner of the map, and in the Geospatial Registration dialog box, type the latitude and longitude coordinates for the first point. The coordinates define the area that is registered.
5. Click in at least two remaining corners, and type the latitude and longitude coordinates for each. Then click Next.
6. Select the associated coordinate system and units (projection scale) to associate with the map and click OK.