Reference Guide

Full Command and Function Reference 3-243
Access: !° LIST SUB ( °is the left-shift of the Nkey).
Input/Output:
Level 3/Argument 1 Level 2/Argument 2 Level 1/Argument 3 Level 1/Item 1
[[ matrix ]]
1
n
startposition
n
endposition
→
[[ matrix ]]
2
[[ matrix ]]
1
{n
row
, n
column
} n
endposition
→
[[ matrix ]]
2
[[ matrix ]]
1
n
startposition
{n
row
,, n
column
}
→
[[ matrix ]]
2
[[ matrix ]]
1
{n
row
, n
column
} {n
row
,, n
column
}
→
[[ matrix ]]
2
“string
target
” n
startposition
n
endposition
→
“string
result
”
{ list
target
} n
startposition
n
endposition
→
{ list
result
}
grob
target
{ #n
1
, #m
1
} { #n
2
#m
2
}
→
grob
result
grob
target
( x
1
, y
1
) ( x
2
, y
2
)
→
grob
result
PICT { #n
1
, #m
1
} { #n
2
#m
2
}
→
grob
result
PICT ( x
1
, y
1
) ( x
2
, y
2
)
→
grob
result
Example 1: { A B C D E } 2 4 SUB returns { B C D } .
Example 2: "ABCDE" 0 10 SUB returns "ABCDE" .
Example 3: PICT { # 10d #20d } { # 20d # 40d } SUB returns
Graphic 11 x 21 .
See also: CHR, GOR, GXOR, NUM, POS, REPL, SIZE
SUBST
Type: Function
Description: Substitutes a value for a variable in an expression. The value can be numeric or an expression.
This is similar to the Where function, denoted by the symbol |, but SUBST substitutes without
evaluating the resulting expression.
Access: Algebra, …×L, P ALG
Input: Level 2/Argument 1: An expression.
Level 1/Argument 2: The value or expression to be substituted.
Output: The expression with the substitution made.
Flags: Exact mode must be set (flag –105 clear).
Numeric mode must not be set (flag –3 clear).
Radians mode must be set (flag –17 set).
Example: Substitute x = z+1 for x in the following expression, and apply the EXPAND command to
simplify the result:
x
2
3x 7+ +
Command: SUBST(X^2+3*X+7,X=Z+1)
EXPAND(ANS(1))
Result: Z^2+5*Z+11
See also: | (where command)
SUBTMOD
Type: Function
Description: Performs a subtraction, modulo the current modulus.
Access: Arithmetic, !Þ MODULO L