Trend Log functions question

[admin]

What do you mean that "the values doesn't make much sense"? Are they different from the data view in trends UI monthly mode?

This example exports daily data for multiple trends for the past month. You can add more trend name to the trendlist table as needed.

Code:

require('trends')

trendlist = {
  'Temperature',
  'Humidity',
}

now = os.date('*t')

dates = {
  ['start'] = { year = now.year, month = now.month - 1, day = 1 },
  ['end'] = { year = now.year, month = now.month, day = 1 }
}

if dates.start.month == 0 then
  dates.start.month = 12
  dates.start.year = dates.start.year - 1
end

year, month = dates.start.year, dates.start.month

rows = {}
datas = {}
days = 0

row = { '""' }
for _, name in ipairs(trendlist) do
  data = trends.fetch(name, dates, 86400) or {}
  days = math.max(days, #data)
  datas[ #datas + 1 ] = data
  row[ #row + 1 ] = string.format('%q', name)
end
rows[ #rows + 1 ] = table.concat(row, ',')

for day = 1, days do
  row = {}

  row[ #row + 1 ] = string.format('%d.%02d.%02d', year, month, day)

  for _, data in ipairs(datas) do
    row[ #row + 1 ] = data[ day ] or ''
  end

  rows[ #rows + 1 ] = table.concat(row, ',')
end

csv = table.concat(rows, '\r\n')