Campbell Scientific LoggerNet Datalogger Support Software User Manual

Page 360

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Section 8. Working with Data Files on the PC

1.1182 (Sd temp for 8 hours)

4.965 (Sd temp for 8 hours)

Smpl(x;n)

returns a sample of element x every n

th

value.

Examples:

Smpl(4;8) = 23.98 (RH every 8 hours)

24.31 (RH every 8 hours)

37.13 (RH every 8 hours)

SmplMax(x;y;n)

looks for a maximum value in element x and samples

element y when the maximum is found. If an n

th

value is

specified then it outputs the sample on a maximum every n

th

value, otherwise it outputs the sample on a maximum at the

end of file.

Examples:

SmplMax(5;(3)) = 55.48 (on max wind speed sample

temperature)

SmplMax(5;(3,6);8) = 56.57 307.3

60.93 317.5

55.48 338.7

(on max wind speed sample temperature and wind direction

every 8 hours)

SmplMin(x;y;n) looks for a minimum value in element x and samples

element y when the minimum is found. If an n

th

value is

specified then it outputs the sample on a minimum every n

th

value, otherwise it outputs the sample on a minimum at the

end of file. Examples:

SmplMin(3;5) = 11.86 (on min temp sample wind speed)

SmplMin(3; (5,6);8) = 8.99 317.7

5.458 312

11.86 351.6

(on min temperature sample wind speed and wind direction

every 8 hours)

Total(x;n)

returns the total of element x over a data set or every n

th

value.

Examples: Total(5) = 211.36 (daily wind run)

WAvg(x;n)

Returns the unit vector mean wind direction in degrees of

element x (wind direction in degrees) over a full data set or

every nth value.

Example:

WAvg(6) =

323.14 (mean wind direction for the day)

WAvg(6;4) =

333.41 (mean wind direction for 4 hours)

315.73 (mean wind direction for 4 hours)

306

(mean wind direction for 4 hours)

314.92 (mean wind direction for 4 hours)

341.03 (mean wind direction for 4 hours)

328.09 (mean wind direction for 4 hours)

8-62

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