View source for Tute M04 Hotlink Arc Archive

=Introduction=
This section introduce how to use ArcMap to open the cross-section files, allowing the user to easily visualise the section.  The same process can be used to open geo-tagged images.<br>
=Method=
To setup hot-linking in ArcMap we use the hyperlink functionality which can be accessed in the ''Properties'' dialogue.
<ol>
<li>Ensure you have the layer you wish to create the hotlink for open (for the tutorial this is '''1d_xs_M04_creek_001_L.shp''').</li>
<li>Right click on the layer in the table of contents and select properties.  Navigate to the ''Display'' Tab.</li>
[[File:Arc Hyperlink 01.jpg|600px]]
<br><br>
<li>Enable hyperlinking by checking the ''Support Hyperlinks using Field'' option.<br>
We can link directly using the "Document" type link, however in order to do this we need to have the full filepath in the source file (e.g. C:\TUFLOW\Tutorial\TUFLOW\model\xs\cross_section.csv).  Typically we only store the relative path in the "Source" column.  Relative paths can be set in the Map Document.  However, I have had trouble getting this to work in the past.  Instead it is suggested to use the "Script" type link.</li>
<li>Select "Script" from the list and select edit.</li>
<li>In the script section, we need to change the path variable from [SOURCE] to include the full path to the cross-section directory, e.g. "C:\TUFLOW\Tutorial_Wiki\Working\TUFLOW\model\xs\" & [SOURCE].<li>
<pre>
Function OpenLink ( [SOURCE] )
  Dim path
  Dim objShell
  path = "C:\TUFLOW\Tutorial_Wiki\Working\TUFLOW\model\xs\" & [SOURCE]
  Set objShell = CreateObject("Shell.Application")
  objShell.ShellExecute path, "", "", "open", 1
End Function
</pre>
[[File:Arc Hyperlink 02.jpg|400px]]
<br><br>
<li>Accept / Apply the changes.  Once back in the Map Window and the Navigate to the Display tab, select the hyperlink icon and click on a cross-section.  The cross-section should open for viewing in Excel (see also this [[EXCEL_setting_default_chart | Excel tip]]).</li>
<br>
[[File:Arc Hyperlink 03.jpg|600px]]
<br>
</ol>
=Conclusion=
The cross-section files are now ready for input into TUFLOW. Please return to the tutorial model, where the next step is to <u>[[Tutorial_Module04_Archive#1D_Channels |create the 1D channels]]</u>.


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