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WindSonic4- Max Wind Speed's Direction


piercewx Jan 26, 2011 01:04 AM

Hi, I am collecting wind data (WindSonic4) every 10 minutes; avg wind speed, wind direction and max wind speed. I would also like to collect data on the direction of the maximum wind speed occurrence but am not sure how to do this. Below is what I have so far for defining my data table. Thanks for any help!

DataTable (TenMinData,True,-1)
DataInterval(0,10,Min,10)
Average (1,WS_knots,FP2,False)
Maximum (1,WS_knots,FP2,False,False)
WindVector (1,WS_knots,WindDir,FP2,False,15,0,0)
EndTable


IslandMan Jan 26, 2011 10:52 AM

DataTable (TenMinData,True,-1)
DataInterval(0,10,Min,10)
Average (1,WS_knots,FP2,False)
Maximum (1,WS_knots,FP2,False,False)
SampleMaxMin (1,WindDir,FP2,False)
WindVector (1,WS_knots,WindDir,FP2,False,15,0,0)
EndTable

Not sure why you have the separate Average (1,WS_knots,FP2,False), the Wind Vector will give you the same average. Also, you don't need the subinterval of 15 in the WindVector instruction, that's only required if you are doing say an hourly average and you want to do four 15 minute averages to determine the hourly. Read up on that in the WindVector help.

This is how I would do the table :-)
DataTable (TenMinData,True,-1)
DataInterval(0,10,Min,10)
WindVector (1,WS_knots,WindDir,FP2,False,0,0,0)
Maximum (1,WS_knots,FP2,False,False)
SampleMaxMin (1,WindDir,FP2,False)
EndTable


piercewx Jan 26, 2011 06:06 PM

Ah, yes that is redundant.. how embarrassing that I overlooked that. Thank you very much for your help. :)

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