Section 5. Split
Blanks and Count are functions designed for checking the
integrity of the data file. A common use for these two functions
is “100.*BLANKS(x;n)/BLANKS(x;n)+COUNT(x;n)” which
gives the percentage of holes (bad data) in the file.
NOTE
Max(x;n)
returns the maximum value of element x over a full data set
or every n
th
value.
Examples:
Max(5)
= 17.12 (max WS for day)
Max(5;12) = 10.41 (max WS for 12 hours)
17.12 (max WS for 12 hours)
Min(x;n)
returns the minimum value of element x over a full data set
or every n
th
value.
Examples:
Min(7)
= 4.23 (min std. dev. of WS for day)
Min(3;8) = 55.33 (min temp for 8 hours)
59.79 (min temp for 8 hours)
55.22 (min temp for 8 hours)
RunTotal(x;n)
returns a running total of element x for every line in the data
set. If an n
th
value is specified, a running total will be output
every n
th
value.
Example:
RunTotal(5)
=
5.85
14.12
21.87
29.47
39.88
48.87
:
:
:
166.76
182.38
199.50
211.36
211.36
Running total of hourly average wind speed provides up-to-
the-hour wind run for that day. Because an n
th
value was not
specified, the Final Summary output, which is daily wind, is
the same as the "total" output.
Sd(x;n)
returns the standard deviation of element x over a full data
set or every n
th
value.
Examples:
Sd(3) = 3.6593 (std. dev. temp for day)
Sd(3;8) = 1.011 (Sd temp for 8 hours)
1.1182 (Sd temp for 8 hours)
4.965 (Sd temp for 8 hours)
5-29
Summary of Contents for PC400
Page 2: ......
Page 16: ...Section 1 Introduction 1 6...
Page 18: ...Section 2 System Requirements 2 2...
Page 46: ...Section 4 The PC400 Main Screen 4 24...
Page 49: ...Section 5 Split 5 3...
Page 82: ...Section 5 Split 5 36...
Page 114: ...Section 6 View 6 14...
Page 132: ...Section 7 Short Cut Program Generator 7 18...
Page 188: ...Section 9 Datalogger Program Creation with CRBasic Editor 9 30...
Page 230: ...Appendix B Table Based Dataloggers B 12...
Page 249: ......
