Reference Guide

3-218 Full Command and Function Reference
• ptype is a command name specifying the plot type. Executing the command SCATTER places
the name SCATTER in ptype.
• depend is a name specifying the dependent variable. The default value is Y.
Access: …µ SCATTER
Input/Output: None
See also: BAR, CONIC, DIFFEQ, FUNCTION, GRIDMAP, HISTOGRAM, PARAMETRIC,
PARSURFACE, PCONTOUR, POLAR, SLOPEFIELD, TRUTH, WIREFRAME, YSLICE
SCHUR
Type: Command
Description: Schur Decomposition of a Square Matrix Command: Returns the Schur decomposition of a
square matrix. SCHUR decomposes A into two matrices Q and T:
• If A is a complex matrix, Q is a unitary matrix, and T is an upper-triangular matrix.
• If A is a real matrix, Q is an orthogonal matrix, and T is an upper quasi-triangular matrix (T is
upper block triangular with 1 × 1 or 2 × 2 diagonal blocks where the 2 × 2 blocks have
complex conjugate eigenvalues).
In either case, A ≅ Q × T × TRN(Q)
Access: !Ø FACTORIZATION SCHUR ( Ø is the left-shift of the 5key).
!´ MATRIX FACTORS SCHUR ( ´ is the left-shift of the Pkey).
Input/Output:
Level 1/Argument 1 Level 2/Item 1 Level 1/Item 2
[[ matrix ]]
A
→
[[ matrix ]]
Q
[[ matrix ]]
T
See also: LQ, LU, QR, SVD, SVL, TRN
SCI
Type: Command
Description: Scientific Mode Command: Sets the number display format to scientific mode, which displays one
digit to the left of the fraction mark and n significant digits to the right.
Scientific mode is equivalent to scientific notation using n + 1 significant digits, where 0 ≤ n ≤ 11.
(Values for n outside this range are rounded to the nearest integer.) In scientific mode, numbers
are displayed and printed like this:
(sign) mantissa E (sign) exponent
where the mantissa has the form n.(n … ) and has zero to 11 decimal places, and the exponent has
one to three digits.
Access: „ & H FMT SCI
„°L MODES FMT SCI ( °is the left-shift of the Nkey).
Input/Output:
Level 1/Argument 1 Level 1/Item 1
n
→
Example: The number 103.6 in Scientific mode to four decimal places appears as 1.0360E2.
See also: ENG, FIX, STD
SCLΣ
Type: Command
Description: Scale Sigma Command: Adjusts (x
min
, y
min
) and (x
max
, y
max
) in PPAR so that a subsequent scatter
plot exactly fills PICT.
When the plot type is SCATTER, the command AUTO incorporates the functions of SCLΣ. In
addition, the command SCATRPLOT automatically executes AUTO to achieve the same result.
SCLΣ is included for compatibility with the HP 28.