Note: Page numbers followed by f indicate figures; those followed by t indicate tables; and those followed by b indicate boxed material.
Symbols and Numbers
& (ampersand) as script statement separator, 123
* (array multiplication operator), 42–43
## (matrix multiplication operator), 43–44
> (maximum operator), 41–42
< (minimum operator), 41–42
[ ) (parentheses) for arrays, 25
(semicolon) for comments, 5
[ (square brackets)
appending array index, 39
for arrays, 25
nested, for multidimensional arrays, 25
8-bit display mode. See PseudoColor (8-bit) display mode
16-bit color, 224
24-bit display mode. See TrueColor (24-bit) display mode
A
Ambiguous keyword abbreviation message, 112
ampersand (&) as script statement separator, 123
and operator
for bit manipulation, 51–52
for bit-wise AND, 48
for Boolean AND, 48
See also Boolean operators
animation, pixmap windows for, 208–209
anonymous structures
accessing variables in, 53–54
arrays of, 55–56
defined, 53
internal identifiers, 55–58
modifying variables in, 54
naming variables in, 53
nested, 54–55
overview, 53–55
Applied Physics Laboratory library, 462
argument-passing mechanism, 113–115
details, 114–115
for_extra keywords, 117–118
by reference, 113–114
arithmetic operators, 36–44
array multiplication, 42–43
array operations, 38–41
efficiency of array operations, precedence and, 40–41
matrix multiplication, 43–44
maximum, 41–42
minimum, 41–42
modulo, 42
array indexing, 29–34
examples, 30–31
index sampling, 32–33
indices specified as arrays, 30
multidimensional array examples, 31–32
multidimensional index sampling, 33–34
one-dimensional, 32
out-of-bounds scalar values and, 30
specifying indices, 29–30
array multiplication operator (#), 42–43
array properties
cumulative total, 72
functions for determining, 67
kurtosis, 71
maximum values, 70
mean, 71
mean absolute deviation, 71
minimum values, 70
number of elements, 68
overview, 67–72
size and type, 68–70
skew, 71
standard deviation, 71
total, 71–72
variance, 71
array reordering
changing dimensions, 75–76
finding unique array values, 80–81
functions for, 75
overview, 75–81
reversing elements, 77
rotating arrays, 77–78
shifting arrays, 79
sorting arrays, 80
transposing arrays, 78–79
array resizing, 81–88
to arbitrary size, 84–86
to arbitrary size with customized interpolation, 86–87
cubic convolution interpolation, 87
functions for, 81
by integer factor, 81–84
removing rows or columns, 87–88
arrays
of anonymous structures, 55–56
appending values to, 25
as arguments, 113
arithmetic operations on, 38–40
data types and, 18
dereferencing pointers to, 63–64
floating-point grid, 28–29
functions for creating, 26–28
indexing, 29–34
indices specified as, 30
loops vs., 24
maximum operator on, 41–42
memory-conserving methods for, 135–136
minimum operator on, 41–42
multidimensional, 25
multiplication operators, 42–44
of named structures, 56–57
operator precedence and efficiency of, 40–41
overview, 24–29
of pointers, 61
properties, 67–72
reading formatted files, 152–155
reasons for using, 24
relational operators applied to arguments, 45–46
reordering, 75–81
resizing, 81–88
returned by tvrd function, 344
storage format, 26
writing to formatted file, 155
See also array indexing; See also array properties; See also array reordering; See also array resizing; See also multidimensional arrays
associated variables creating, 169
for input files with sequential chunks of data, 170
reading binary data via, 169–170
Attempt to call undefined procedure/function message, 93
Attempt to store into an expression message, 154
Attempt to subscript ARR with INDEX is out of range message, 30
attributes of widgets, 401
automatic compilation, 93–95
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