Set Attributes

The attributes of GQEs can be changed with the help of a full screen menu - this is invoked by the change command - or from the command line:

Format:

SPECTRA> set id /attr1=val1[/attr2=val2...]

Description:

If id is replaced by the wild-card $*$, the set command affects all active queue elements. The attribute() function retrieves the value of an attribute. Different queue elements have different attribute types. This section lists the GQEs in alphabetic order.

e.g.:

The figure in section 15.3.69 has been created with the following command file:

! 
!  The whole queue is deleted 
delete *.* 

!  The x-window is set to 18 x 18 cm**2
set ws view 0 0.18 0 0.18 

!  A file is read and displayed.
read bpu1 
display 

!  Set the strings for the axis descriptions.
delete bpu1.1 
set bpu1.3/text="Energy [eV]" 
set bpu1.4/text=Ioni1 

!  Sets the up-vector, the string is rotated.
set bpu1.4/ux=-1/uy=0 

!  Sets the text position.
set bpu1.4/y=0.45/x=-0.12 

!  The primitive type is set to open triangles.
set bpu1/prim=1/size=2/type=-2 

!  Temp is set to a pre-defined viewport. 
set bpu1/y_max=2.5 
read/notext gra_examples:bpu1 temp 
set temp/v2 

!  The big tic mark numbers are suppressed for temp.
set temp/x_maj=-attr(temp,x_maj) 
set temp/y_maj=-attr(temp,y_maj) 

!  Enable the grid.
copy layout temp 
set temp.layout/grid\_colour=1

!  The axis frame of bpu1 will open at the up-right corner. 
set layout/plot_box=0

!  Draw a border around the workstation viewport.
set layout/border=1

!  Display what has been prepared.
display 

!  Create a postscript output file. The qualifier /portrait rotates
!  the whole plot by 90 degree. The postscript file is displayed by
!  Ghostview.
post/portrait/gs

Figure 15.1: Example for set commands