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Author

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1		-XWiki.mdurcik
	1	+XWiki.msibayan

Content

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1		-{{warning}}
2		-As of January 2016 the Measurement File format has been changed from the old tab delimited variables, to the new JSON format.
3		-{{/warning}}
	1	+{{warning}}As of January 2016 the Measurement File format has been changed from the old tab delimited variables, to the new JSON format.{{/warning}}
4	4
5	5
6	6	The "Measurement File" or "m-file" is an ASCII text, human readable, JSON format file which holds information pertaining to a measurement or group of measurements. In general, a measurement file will hold all data from sensors sampled at a particular time (i.e. - measure a group of five thermocouples at 11:30am on Dec. 1, 2012). However, it is not limited to this, as one could group a single sensor, or even a group of sensors, over an extended period of time. The format of this file is a JSON array of JSON objects containing information about the sensor and it's measurement.
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7	7
8	8	Below is an example of a sensor named "MySensor" that measures speed and direction with raw measurements of voltage and counts.
9	9
10		-{{code language="<JSON>"}}
	8	+> {{code language="<Apache"}}
11	11	[{"sensorcode":"MySensor","sensorid":102,"variablecode":"Volts","variableid":1,"value":1.54,"units":"V","DateTime":"2016-03-18 19:00:00"}
12	12	,{"sensorcode":"MySensor","sensorid":102,"variablecode":"Direction","variableid":3,"value":224,"units":"Degrees","DateTime":"2016-03-18 19:00:00"}
13	13	,{"sensorcode":"MySensor","sensorid":102,"variablecode":"Counts","variableid":1,"value":6,"units":"#","DateTime":"2016-03-18 19:00:00"}
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16	16	{{/code}}
17	17
18	18	Useful fields:
19		-
20	20	* SensorCode - Unique name of a sensor (string)
21	21	* VariableCode - Unique name of a variable (string)
22	22	* Value - Numeric value of the measurement (float)
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28	28	* DBID - The user account that manages the sensor information (string)
29	29	* DataTable - The table within the schema to which data is stored (string)
30	30
31		-{{info}}
32		-The information below is provided for reference and is no longer the standard format.
33		-{{/info}}
34	34
	29	+{{info}}The information below is provided for reference and is no longer the standard format.{{/info}}
	30	+
35	35	The "Measurement File" or "m-file" is an ASCII text, human readable, tab-delimited file which holds information pertaining to a measurement or group of measurements. In general, a measurement file will hold all data from sensors sampled at a particular time (i.e. - measure a group of five thermocouples at 11:30am on Dec. 1, 2012). However, it is not limited to this, as one could group a single sensor, or even a group of sensors, over an extended period of time.
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37	37	**The measurement file has strict conventions. Measurement files uploaded to the LEO Data Server must follow these guidelines**
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49	49
50	50	The current convention for file naming is “DeviceName_TimeStamp.txt”, and example filename is “cRIO-LEO-Center-P01_20131121173002.txt” for a device named “cRIO-LEO-Center-P01” and a timestamp 2013/11/21 at 17:30:02. An example of the file contents for a measurement file containing data for 8 sensors with 14 data points is shown below:
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52		-
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54	54	|(((
55	55	2013-11-21 17:30:01 LEO-C_10_-4_4_GMM222 0.121902 341.325300
56	56	2013-11-21 17:30:01 LEO-C_10_4_4_GMM222 0.142809 399.866131
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61	61	2013-11-21 17:30:01 LEO-C_6_-4_1_TCAV 23.783472
62	62	2013-11-21 17:30:01 LEO-C_6_0_1_TCAV 23.336414
63	63	)))
64		-
65		-