Introduction to Geographic Information Systems in Forest Resources
| Introduction to Geographic Information Systems in Forest Resources |
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Hyperlinking is a feature of ArcGIS in which features within vector layers become associated with files, ArcGIS documents or map documents, or external applications. The name of a specific file to be opened is saved as an attribute in the feature attribute table.
Hyperlinks, when clicked, will open files such as photographic images, video or audio clips, or text files. Hyperlinks work by spawning other applications residing on the PC, such as Excel or Netscape.
For example, a map document may contain a data frame with world cities represented as points. With hyperlinks set up and activated, when a user clicks on a city, a photographic image of a famous landmark will open.
Hyperlink control is defined in layer properties
Hyperlinks work by storing a file name as a value for a vector feature in the layer attribute table.
In this example, the Seattle is selected.
The attribute table for the cities layer contains a field called image which is a text field containing the full pathname of an image of the city.
The hyperlink property is enabled by setting the layer properties for the cities layer:
This shows that the field used for hyperlinking will be image, with the assumption the contents of the field are pathnames to documents (files).
A view of the file system shows the presence of the image:
The image itself is a simple GIF:
Using the Hyperlink tool 
and clicking on Seattle (outlined in red for the sake of illustration here),
An image opens with the system default application associated with GIF files:
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