Hewlett Packard Graphics Language Commands

IP, Input P1 and P2

This command establishes new or default locations for the scaling points P1 and P2. P1 and P2 are used by the Scale (SC) command to establish user-unit scaling. You can also use IP in advanced techniques such as printing mirror-images, enlarging/reducing drawings, and enlarging/reducing relative character size, or changing label direction (see the previous discussion in this chapter).

IP X_P1,Y_P1[,X_P2,Y_P2;] or

IP [;]

The default location of P1 is the lower-left corner of the PCL Picture Frame; the default location of P2 is the upper-right corner. (The default picture frame extends from the top margin to the bottom margin, and from the left edge to the right edge of the logical page.)

• No Parameters - Sets P1 and P2 to their default locations, adjusted by any current axis rotation.

Note: If an IP command without parameters is executed after the axes are rotated with the RO command, P1 and P2 locations change to reflect the rotation. If the coordinate system orientation subsequently changes (e.g., by sending an RO command), the plotter unit position is maintained with respect to the new orientation.

• X,Y Coordinates - Specify the location of P1 (and, optionally, P2) in plotter units. Specifying P2 is not required. If P2 is not specifed, P2 tracks P1 and its coordinates change so that the X,Y distances between P2 and P1 stay the same. This tracking process can locate P2 outside the elective window. Used carefully, the tracking function can be useful for preparing more than one equal-sized drawing on a page. For an example, refer to "Drawing Equal-Sized Pictures on a Page" earlier in this chapter.

  Neither X,Y coordinate of P1 can equal the corresponding coordinate of P2. If either coordinate of P1 equals the corresponding coordinate of P2, the coordinate of P2 is incremented by 1 plotter unit.

The locations of P1 and P2 interact with the following commands:

An IP command remains in effect until another IP command is executed, an IR command is executed, or the printer is initialized.

  .