Managing Properties

Important! If you have used previous versions of Cytoscape, you will notice that handling of properties has changed. The most important change is that properties are no longer saved by default to the current directory or to your home .cytoscape directory. Properties are stored by default in Cytoscape session files (.cys extension). The cytoscape.props file still exists in the .cytoscape directory but is only written to when the user explicitly requests that the current settings be made the defaults for all future sessions of Cytoscape. Unless you have something important in your .cytoscape/cytoscape.props file, your best bet will be to delete the file and use the defaults.

The Cytoscape Properties editor, accessed via Edit → Preferences → Properties…, is used to specify general and default properties. Properties are now stored in Cytoscape session files, so changes to general properties will be saved as part of the current session, but will only carry over to subsequent sessions if they are set as defaults or exported using the File → Export function.

Cytoscape properties are configurable via Add, Modify and Delete operations.

Some common properties are described below.

Property name

Default value

Valid values



integer > 0



integer > 0





A path to the web browser on your system. This only needs to be specified if Cytoscape can’t find the web browser on your system.

Setting Default Properties

It is possible to alter the default properties for Cytoscape.

Edit the properties via Edit → Preferences → Properties... and check the Make Current Cytoscape Properties Default checkbox. This will save the current properties to the .cytoscape directory, where they will then be applied to all of your Cytoscape sessions from that point on. Otherwise, Cytoscape will automatically save the properties used in a particular session inside its .cys session file, while the default properties will be applied at the beginning of subsequent sessions.

Managing Bookmarks

Cytoscape contains a pre-defined list of bookmarks, which point to sample network files located on the Cytoscape web server. Users may add, modify, and delete bookmarks through the Bookmark manager, accessed by going to Edit → Preferences → Bookmarks… .

There are currently two types of bookmarks: network and annotation. Network bookmarks are URLs pointing to network files available on the Internet. These are nomal networks that can be loaded into Cytoscape. The annotation bookmarks are URLs pointing to ontology annotation files. The annotation bookmarks are only used when importing an ontology.

Managing Proxy Servers

You can define and configure a proxy server for Cytoscape by going to Edit → Preferences → Proxies… .

After the proxy server is set, all network traffic related to loading a network from URL will pass through the proxy server. Other plugins use this capability as well. The proxy settings are saved in cytoscape.props. Each time you click the Update button after making a change to the proxy settings, an attempt is made to connect to a well known site on the Internet (e.g., using your settings. For both success and failure you are notified and for failure you are given an opportunity to change your proxy settings.

If you no longer need to use a proxy to connect to the Internet, simply uncheck the Use Proxy checkbox and click the Update button.

Cytoscape_User_Manual/Preferences (last edited 2010-03-08 19:39:23 by 75-59-236-15)

Funding for Cytoscape is provided by a federal grant from the U.S. National Institute of General Medical Sciences (NIGMS) of the Na tional Institutes of Health (NIH) under award number GM070743-01. Corporate funding is provided through a contract from Unilever PLC.

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