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File Routines
3.4 File > Display > HKLs • Overlay
predicted HKL pattern on the display
GADDS Software Reference Manual
3.4.1 Arguments
User Level: 2
File > Display > HKLs draws an overlay on the
currently displayed frame according to three
input arguments. Each argument is listed below
by its SLAM command line name, followed by its
dialog box prompt in parentheses:
SLAM Syntax: DISPLAY /HKL $1 $2 $3
$1 ......................... (Spread)
Menu Command: File > Display > HKLs
Accelerator: None
These commands allow you to draw an overlay
of predicted spot positions onto a displayed
frame.
The /OVERLAY option in File > Display also
allows you to automatically display the overlay
every time a new frame is displayed. The overlay is computed from the current orientation
matrix (from the last Peaks > Refl. Array >
LeastSq command) and takes into account any
lattice centering determined in Peaks > Refl.
Array > Bravais. You can draw overlays on magnified frames by entering the desired magnification and center in the File > Display dialog when
the image is displayed (the Edit > Zoom command does not redraw or magnify graphic overlays).
[0.75]
Width in degrees of the predicted pattern.
Default is 0.75.
$2 ......................... (Lineweight)
[1]
Line thickness used for drawing the overlay
markers. The drawing routine will constrain
the input value to be from 1 to 3. Default is
1.
$3 ......................... (Scan Angle)
[-9999]
Starting scan angle for pattern prediction, in
degrees. The special value -9999 (the
default) directs the program to obtain the
starting angle from the currently displayed
frame. The signed frame width and scan
axis (omega or phi) are always obtained
from the currently displayed frame. The
scan angle range covered by the predicted
pattern will be from A1 to A2 calculated as
follows:
FRAME_CENTER = SCAN_ANGLE +
FRAME_WIDTH/2.
A1 = FRAME_CENTER - SPREAD/2
A2 = FRAME_CENTER + SPREAD/2
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