Campbell CR6 Series, Operator'S Manual

Page: 196 / 690

Section 7. Installation
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b) scaling an array, for example converting all of the FREQ/HZ returned by a
group of AVW200's into digits, strain, level, etc.
c) creating boolean arrays based on comparisons with a scalar or another array
The main drivers at the time of starting down this path were
1) multiple years of feedback from customers asking me how to more tersely
initialize and scale arrays - often trying to compare CRBasic to Matlab or Python.
2) Easier ways to scale vibrating wire measurements and transpose their resulting
data arrays:
CRBasic provides an array notation that allows one to easily operate on a single
dimension of an array. Using this notation one can easily:
• initialize an array dimension
•
copy a dimension to a new location
•
scale an array dimension
• perform a mathematical or logical operation for each element in a
dimension using scalar or similarly located elements in different arrays
and dimensions
Here are some syntax rules and behaviors. Given the array, Array(A,B,C):
• The () pair must always be present, i.e., reference the array as Array() or
Array(A,B,C)().
•
Only 1 dimension of the array can be operated on at a time. To select the
dimension, negate the element index.
•
Operations will not cross from 1 dimension into another. We access
from the specified starting point to the end of the dimension, where the
dimension is specified by a negative or by default is the least significant.
• If indices are not specified, or none have been negated, the least
significant dimension of the array will be assumed.
•
The offset into the dimension being accessed is given by A,B, and C in
Array(A,B,C)().
• If the Array is referenced as Array(), then the starting point is assumed
Array(1,1,1) and the least significant dimensioned is accessed.
7.6.3.6 Declaring Local and Global Variables
Advanced programs may use subroutines
(p. 384)
or functions, each of which can
have a set of Dim variables dedicated to that subroutine or function. These are
called local variables. Names of local variable can be identical to names of
global variables
(p. 585)
and to names of local variables declared in other