Download and write the data to InfluxDB
From your terminal, download the text file that contains the data in line protocol format:
curl https://s3.amazonaws.com/noaa.water-database/NOAA_data.txt -o NOAA_data.txt
Write the data to InfluxDB via the CLI:
influx -import -path=NOAA_data.txt -precision=s
See all five measurements:
> SHOW measurements name: measurements ------------------ name average_temperature h2o_feet h2o_pH h2o_quality h2o_temperature
Count the number of non-null values of
> SELECT COUNT(water_level) FROM h2o_feet name: h2o_feet -------------- time count 1970-01-01T00:00:00Z 15258
Select the first five observations in the measurement h2o_feet:
> SELECT * FROM h2o_feet LIMIT 5 name: h2o_feet -------------- time level description location water_level 2015-08-18T00:00:00Z below 3 feet santa_monica 2.064 2015-08-18T00:00:00Z between 6 and 9 feet coyote_creek 8.12 2015-08-18T00:06:00Z between 6 and 9 feet coyote_creek 8.005 2015-08-18T00:06:00Z below 3 feet santa_monica 2.116 2015-08-18T00:12:00Z between 6 and 9 feet coyote_creek 7.887
Data sources and things to note
The sample data are publicly available data from the National Oceanic and Atmospheric Administration’s (NOAA) Center for Operational Oceanographic Products and Services. The data include 15,258 observations of water levels (ft) collected every six seconds at two stations (Santa Monica, CA (ID 9410840) and Coyote Creek, CA (ID 9414575)) over the period from August 18, 2015 through September 18, 2015.
Note that the measurements
h2o_temperature contain fictional data.
Those measurements serve to illuminate query functionality in Schema Exploration.
h2o_feet measurement is the only measurement that contains the NOAA data.
Please note that the
level description field isn’t part of the original NOAA data - we snuck it in there for the sake of having a field key with a special character and string field values.