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Last modified: December 2008

URL: http://cxc.harvard.edu/chips4.1/current_frame.sl.html
AHELP for ChIPS 4.1

current_frame

Context: sl.chips

Synopsis

Set the specified frame as current.

Syntax

current_frame( ChipsId );
current_frame( "frame_id" );
current_frame( "all" );

Description

The current_frame command sets the frame indicated by the argument as the current frame; see "ahelp currency" for general information on currency.

  • ChipsId - an optional ChipsId structure containing values to modify the currency state for the command.
  • frame_id - identification tag given to each object that is created; use this to select a specific frame.
  • all - sets all frames to be current.

Use the info_current command to retrieve a list of all the current items in the ChIPS session, as shown in Example 1.

Example 1

chips> id = ChipsId();
chips> add_frame( "id=data05");
chips> add_frame( "id=data07");
chips> id.frame = "data05";
chips> current_frame(id);
chips> info_current();

Two frames are created; the second frame is current after it is created. The id.frame command sets the frame value of the ChipsId structure to the first frame, then the current_frame command makes that frame current.

The output of info_current for this session is:

Window [win1]
  Frame [data05]
    Coord Sys [Frame Normalized]

Example 2

chips> add_frame("id=data05");
chips> add_frame();
chips> current_frame("data05");

Two frames are created. After the second frame is created, it is current. The current_frame command then sets the first frame as the current frame.

Example 3

chips> add_frame("id=data05");
chips> add_frame();
chips> current_frame("all");

Two frames are created. After the second frame is created, it is current. The current_frame command then makes all frames current.

Bugs

See the bugs pages on the ChIPS website for an up-to-date listing of known bugs.

Last modified: December 2008



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