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TheAdobe Geospatial PDF Readerallows us to inspect and manipulate data from PDF,including the content of PDF map frames.Let's take a look at a simple PDF which contains a title,a couple of maps,some text,and a table.
Viewing the PDF document in Adobe Acrobat Reader
1.Add Adobe Geospatial PDF Reader
Add a newAdobe Geospatial PDF Readerto FME Workbench or Data Inspector.Set the dataset toWallaWalla.pdf.
2.Set theAdobe Geospatial PDF Reader Parameters
If PDF contains map frames,chances are geospatial coordinates and coordinate system information can be retrieved for map features.To achieve this,all spatial information should be read withGeospatial (if possible) Coordinate Unitssetting.
Go to theAdobe Geospatial PDF Reader Parametersand setCoordinate UnitstoGeospatial (if possible).
Adobe Geospatial PDF Reader Parameters - Set Coordinate Units to Geospatial (if possible)
3.View the WallaWalla dataset
At first,the result might look very surprising in Data Inspector:
Viewing the PDF document in Data Inspector
The map feature coordinates are in coordinate system LL-83 in the range of (-117,-120) degrees for latitude and (45,48) degrees for longitude,while the page coordinates of other,non-map,features are in the range of (35,740) for X and (430,600) for Y.While displayed in the same Data Inspector view,map features are located far away from the rest of the PDF page content.
Chances are,though,that not all map features will be displayed within the map frame.Some might be displayed in page points,together with the non-spatial features.Why this can happen is explained inWhat Happened to My PDF Map Features?
The data used here originates from open data made available by theUnited States Census Bureauand theBerkeley School of Information.
What Happened to my PDF Map Features?
Tutorial: Getting Started with PDF Reading
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