The pseudo command in SpecTcl provides the ability to create a new parameter from existing parameters. The new parameter is computed using a script that is passed to the pseudo command when the parameter is generated. See the documentation of the pseudo command in the SpecTcl command reference.
Three URLs provide access to all aspects of the pseudo command:
http://host:port/spectcl/pseudo/create?pseudo=pname&body=script¶meter=param1[¶meter=param2...]
The new pseudo parameter is given the name in the pseudo query parameter. This parameter must have already been defined. parameter defines the parameters the pseudo depends on. The body query parameter defines the Tcl script that will compute the pseudo parameter. Again see the SpecTcl command reference for pseudo for information about the parameters that are passed to this script.
The properties of any pseudo parameters can be gotten via URLs of the form:
The return value detail attribute is a JSON array where each element is a JSON object that describes one pseudo parameter. Note that if the optional pattern query parameter is provided it is a string with glob wild card characters, and only those pseudos whose names match that pattern will be listed in th array.
Each object in the array has the following attributes:
Name of the pseudo parameter.
Array of strings that are the names of the parameters the pseudo depends on.
The script that defines the computation that takes the parameters and from the creates the pseudo.
Finally pseudo parameters can be deleted using this URL
The name query parameter describes the name of the pseudo to delete. Note that the underlying parameter remains defined.