PDF Attributes



DEPARTMENT FACULTY

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    Daron Acemoglu
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    Tobias Salz
    Frank Schilbach
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    Robert M. Townsend
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    Visiting Postdoctoral Associate (Teaching Fall 2020)

    roeelevy@mit.edu

  • Nicolaj Muehlbach
    Visiting Postdoctoral Fellow (Spring 2021)

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    Adminstrative Assistant

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PHD STUDENTS

  • Salome Aguilar Llanes
    Daniel Aronoff
    Karl Aspelund
    Ivan Badinski
    Aaron Berman
    Pedro Bessone Tepedino
    Hector Blanco
    Joshua Bosshardt
    Ari Bronsoler
    Theodore Caputi
    Anne Carlstein
    Alex Carrasco Martinez
    Oguzhan Celebi
    Alden Cheng
    Daniel Clark
    Jonathan Cohen
    Viola Corradini
    Roberto Corrao
    Max Cytrynbaum
    Edward Davenport
    Marc de la Barrera i Bardalet
    Benjamin Deaner
    Aileen Devlin
    Clara Isabel Di Tella
    Rebekah Dix
    Brandon Enriquez
    Mayara Felix
    Joel Flynn
    Michele Fornino
    Juliette Fournier
    Masao Fukui
    Ying Gao
    Tishara Garg
    Sarah Gertler
    Feixue (Mary) Gong
    Aaron Goodman
    Ahmet Gulek
    Basil Halperin
    Raymond Han
    Adam Harris
    Nathaniel Hickok
    Lisa Ho
    Deivy Houeix
    Allan Hsiao
    David Hughes
    Clemence Idoux
    Ali Kakhbod
    Mohit Karnani
    Shinnosuke Kikuchi
    Bumsoo Kim
    Sylvia Klosin
    Geoffrey Kocks
    Giacomo Lanzani
    Kelsey Larson
    Claire Lazar Reich
    Todd Lensman
    Antoine Levy
    Kevin Li
    Jeremy Majerovitz
    Andrea Manera
    Alex Martin
    Pedro Ignacio Martinez Bruera
    Andre Medeiros Sztutman
    Carlos Molina
    Kelsey Moran
    Jacob Moscona
    Aroon Narayanan
    Thi Mai Anh Nguyen
    Vishan Nigam
    Daniel O'Connor
    Alexander Olssen
    Victor Orestes
    Roi Orzach
    Abigail Ostriker
    Lucy Page
    Lia Petrose
    Indira Puri
    Victor Quintas-Martinez
    Kramer Quist
    Charlie Rafkin
    Kailash Rajah
    Matthew Ridley
    Vincent Rollet
    Hannah Ruebeck
    Anna Russo
    Eitan Sapiro-Gheiler
    Reca Sarfati
    Karthik Sastry
    Patrick Schwarz
    Jaeeun Seo
    Charles Serfaty
    Garima Sharma
    Joseph Shayani
    Advik Shreekumar
    Rahul Singh
    Adam Solomon
    Evan Soltas
    Carolyn Stein
    Michael Stepner
    John Sturm
    Liyang (Sophie) Sun
    Diana Sverdlin Lisker
    Nagisa Tadjfar
    Ishaana Talesara
    Joonas Tuhkuri
    Martina Uccioli
    Pierre-Luc Vautrey
    Rafael Veiel
    Suhas Vijaykumar
    Kartikeya Vira
    Jaume Vives
    Yixiang (Sean) Wang
    Arthur Wickard
    Michael Wong
    Margaret Yellen
    Samuel Young
    Henry Zhang
    Laura Zhang
    Jie Zhou

    PDF, the Portable Document Format, is a popular graphics file format that supports vector and raster graphics in a single compact file. A single PDF file can contain multiple pages, and the format has the ability to preserve layers and graphic feature attributes and map georeference information. PDF is one of the most widely used ways of publishing geographic information to non-GIS users and is an important archival and hard-copy press exchange format.

    Because a large majority of computers already have Adobe Reader or Adobe Acrobat software installed, you should consider exporting your map to PDF when you need to reliably exchange a map with a non-GIS user. PDF files are especially useful when you want to provide a document that can output to a printer in addition to being viewed on-screen. Because PDF allows preservation of vector graphics and embedded fonts, it will provide the best opportunity for a high-quality print by the end map user.

    You should also use PDF when you wish to provide a simple, self-contained interactive map viewing experience. PDF documents store all map information in a single file, making it is a useful medium for sharing content with those who work in locations where a network connection is not available. Exporting map layer information and georeference information can geoenable the PDF document, allowing the user to interact with and search through the map content.

    Attributes

    Configuring PDF export settings

    ArcMap's Export Map dialog box allows you to control the settings used to create the PDF file. For most cases, using the default values should produce a usable file, but you can set export options to create output for specific requirements.

    Resolution

    This specifies the output resolution or (dots per inch) in the output image. Higher values usually produce sharper images. However, this can also substantially increase the file size and processing time. For PDF, the default resolution is 300 dpi.

    Output Image Quality

    The Output Image Quality control is intended to resample raster data prior to printing or exporting the map. For maps with raster data or transparent vector layers, adjusting this value can significantly reduce the amount of data being passed through the output pipeline and will reduce export times and file sizes.

    PDF Format options

    Destination Colorspace controls the color space in which colors are specified in the output file. RGB is the default and is appropriate for on-screen viewing and printing to inkjet or laser printers. CMYK mode is intended for commerical print production, when your output will be sent to a print shop. If you want to compress the vector portions of your PDF to produce a smaller output file, check the Compress Vector Graphics option. There is a separate Image Compression option for compressing raster portions of the PDF. Adaptive mode produces the smallest file size but may produce compression artifacts on the export image. For lossless compression of raster images in the PDF, use Deflate mode. The Embed All Document Fonts option allows you to include the fonts that are used within the document itself. This allows the PDF to look the same when opened on any platform that supports PDF viewing, even if the platform does not have the document's fonts installed. This is the default and should usually be used.

    Note:
    Some fonts do not support embedding and will not embed even when this option is checked.

    Data Driven Pages

    PDF includes support for exporting Data Driven Pages to PDF format. When Data Driven Pages are enabled in your map document and ArcMap is set to layout view, the Pages tab provides access to the options that control Data Driven Pages export.

    Configuring PDF with arcpy.mapping

    The arcpy.mapping module is a Python scripting library that allows you to open and manipulate map documents and layers. It can also modify PDF documents. Using the arcpy.mapping PDFDocument class, you can merge PDF pages together, password protect PDF files, and attach other files to PDF documents.

    How to password protect a PDF document using arcpy.mapping

    You can use a simple arcpy.mapping script to encrypt and password protect a PDF document. Follow these steps to encrypt a PDF document and protect it with the example password secret.

    AttributesList
    1. Export a map to PDF format and note the export file's location on disk.
    2. Click Geoprocessing > Python from the main menu to open the Python Window
    3. Copy this script text to the clipboard and paste it into the Python Window:
    4. Modify the file path text C:Project.pdf so it matches the folder location and file name of the PDF document you want to encrypt.
    5. After modifying the script text as needed, click on the bottom line of the Python Window to move the text insertion cursor to the end of the script.
    6. Press the ENTER key to execute the script and encrypt the PDF document.

    Advanced PDF features

    PDF files exported from ArcMap can include advanced functionality in addition to their usage as a graphic interchange format. PDF files can contain layers from the ArcMap table of contents so that users can enable and disable the visibility of layers and graphic elements on the PDF page. PDF files exported from ArcMap can also include attributes for GIS features as well as georeference information for each map data frame. Anyone viewing the PDF document in Adobe Reader or Adobe Acrobat can use the Acrobat Analysis tools to inspect feature attributes and look up and identify geographic coordinates. The following sections contain information about these advanced features and their usage.

    PDF layers

    ArcMap PDF exports can contain layers whose visibility can be controlled in PDF viewing applications. To enable layers in a PDF export, select the Export PDF Layers Only option or the Export PDF Layers and Feature Attributes option under the Layers and Attributes drop-down menu on the Export Map dialog box's Advanced tab:

    Most ArcMap table of contents layers, data frames, and layout elements will be included as separate layers in the export. However, certain types of symbology may affect the presentation of a layer in the finished PDF. Refer to the graphic below for an outline of the PDF layer creation from within ArcMap.

    Below are some facts and tips concerning PDF layer creation from ArcMap:

    • Each data frame will have its own folder in the tree view of the PDF that contains all the layers and the data frame graphics (neatline, background) associated with it.
    • Text, picture, or north arrow elements added to a layout become part of a layer called Other. It contains all the graphics and marginalia that are not part of a data frame.
    • Each group layer will be represented as a folder in the tree view, and the contents of the group layer will be presented within the group layer.
    • Layers that cause rasterization, such as transparent layers, or layers that use a picture fill symbology consolidate all the layers below them into a single layer with the name Image.
    • If a layer contains picture marker or picture fill symbology, use the option Vectorize picture markers/fills, found on the Format tab of the Options panel. This prevents rasterization of layers below picture markers and fills.
    • Raster layers, such as orthophotos, consolidate all layers below them into a single Image layer. Place raster layers lower in the ArcMap table of contents to avoid this problem.
    • Graphic or text elements added to the data frame's default graphics layer from data view become a layer called <Default>. These are displayed above the layers in the data frame. If multiple annotation groups exist (check this on the Drawing > Active Annotation Target menu command on the Draw toolbar) and their contents are in the data view, each individual annotation group becomes a separate layer above the <Default> layer. This is a good way to add focus areas or graphics that emphasize or mask certain features in the data view.
    • Backgrounds or drop shadows added to the data frame may become separate graphic elements and may be rendered multiple times as graphics. For example, if a data frame has a colored background, and the layout has a different colored background, the data frame's background may be rendered once to the data frame's Graphics or ArcGIS Layer and again to the layout's Graphics layer or ArcGIS Layer.
    • Dynamic labels (not using annotation) in each data frame are rendered separately as part of a layer called Labels.
    • Geodatabase annotation is displayed as a separate layer in the PDF. Map annotation is consolidated into the layer for the annotation group in which it belongs.
    • When labels are converted to annotation, they are automatically placed in their own named annotation group and render separately from the <Default> group.
    • Data frames and other layout elements are rendered in draw order when exported to PDF. Therefore, the topmost layout element in the map is the first element in the resultant PDF table of contents. Use the Bring Forward and Send Backward commands from the Draw toolbar to change the draw order of layout elements.

    PDF attributes

    The Attributes Of God Pdf

    PDF files exported from ArcGIS can include feature attributes from the feature's attribute table using functionality built in to Adobe Acrobat and Adobe Reader. This option can be enabled by choosing the Export PDF Layers and Feature Attributes option from the Advanced tab of the Export Map dialog box:

    The visibility of fields in the feature's attribute table determines what fields will be exported in the resulting PDF. To turn these fields on and off, go to the Fields tab of the Layer Properties dialog box. The check boxes determine the visibility of the given field. Check or uncheck the check boxes to expose more or fewer attributes in the resultant PDF.

    Alternatively, the visibility of the fields can be controlled in the Table window by right-clicking the column heading and choosing the Turn Field Off option:

    Caution:
    Exporting attributes to PDF can result in performance problems in compatible PDF viewers. If possible, limit exported fields to one layer per map. To suppress field export, turn off field visibility in the Layer Properties dialog box.

    People using your PDF can access these attributes in Adobe Acrobat and Adobe Reader using the Object Data tool (see Tools > Object Data, or enable the Model Tree view in either of those programs).

    PDF map georeference

    Pdf Attributes Hidden

    Adobe Acrobat and Adobe Reader versions 9 and later allow viewing of map coordinates and georeference information encoded inside the PDF file. Exporting a map with the Export Map Georeference Information option enabled will record each data frame's georeference information inside the PDF. When the georeferenced PDF is opened in a compatible viewer, such as Adobe Reader 9, the user can access geospatial functions such as coordinate readout and finding x,y.

    Note:

    The geospatial functionality available to Adobe Acrobat and Adobe Reader users depends on which Acrobat 9 product they are using. When a PDF exported from ArcMap is used directly in the free Adobe Reader 9 product, tools for coordinate readout and find x,y will be available. If that same PDF is opened in any of the pay-for Acrobat products, an extended geospatial toolset is provided, including coordinate readout, find x,y, geodesic measurement, and georeferenced markup. This same extended toolset can be accessed in the free Adobe Reader if the PDF has first been resaved in Adobe Acrobat 9 Pro or Pro Extended using the Extend Features in Adobe Reader command in those programs. Enabling PDF for extended Adobe Reader features is only available in software from Adobe Systems, such as Adobe Acrobat Pro, and cannot be performed in ArcMap.

    The georeference information saved inside the PDF file contains the following for each data frame on the page layout: corner coordinates of the data frame's boundary, both in latitude and longitude and in PDF page units (points), and a string describing the data frame's coordinate system as defined in the data frame properties coordinate system options. This information is saved into the internal stream of the PDF file for use by Adobe Reader or Adobe Acrobat, and the raw data is not user viewable. When a map is exported from data view instead of layout view, the PDF will contain a single map image along with its corresponding georeference information.

    PDF files containing georeference information are still compatible with earlier (pre-Acrobat 9) versions of Adobe Acrobat and Adobe Reader. Files will open without problems, but the coordinate-related functions will not be available. Exporting to PDF with the Georeference option enabled does not negatively impact performance. Export takes the same amount of time with the option on or off. With these facts in mind, you may wish to keep the option enabled for all map exports. However, if you desire to not have the georeference information included in the PDF file, uncheck the Export Map Georeference Information check box to suppress export of georeference information.

    Pdf Attributes

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