Display records by the hour

[randomtrader]

I am accessing a database with instruments logs at 30 sec interval.

I need to create a visual that display chart not every 30 sec but instead every hour only.

The values doesn't need to be calculated as each reading is the current actual value during the given time.

How can I do this?

[randomtrader]

Hi Pete!

Thank you so much! Indeed it work!

One snappy salute for your help!

[watkinnc]

so there being 120 values per hour, you could add an index column beginning at one, and then a custom column like

Table.SelectRows(PriorStepName, each Number.Mod([Index], 120) =0)

Actually, this is easier:

= Table.Split(TableName, 120){0}[Timestamp]

--Nate

[randomtrader]

I will try this and surely get back to you. Thank you.

[BA_Pete]

Hi @randomtrader ,

Paste this into a new blank query in Power Query. It's a time dimension table:

let
  hoursTable = Table.FromList({0..23}, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
  renHours = Table.RenameColumns(hoursTable, {{"Column1", "hours"}}),
  minutesTable = Table.FromList({0..59}, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
  secondsTable = Table.FromList({0..59}, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
  addCJminutes = Table.AddColumn(renHours, "minutes", each minutesTable),
  expandCJminutes = Table.ExpandTableColumn(addCJminutes, "minutes", {"Column1"}, {"minutes"}),
  addCJseconds = Table.AddColumn(expandCJminutes, "seconds", each secondsTable),
  expandCJseconds = Table.ExpandTableColumn(addCJseconds, "seconds", {"Column1"}, {"seconds"}),
  addTimeHH = Table.AddColumn(expandCJseconds, "timeHH", each Text.Combine({Text.From([hours], "en-GB"), "00"}, ":")),
  addTimeHHMM = Table.AddColumn(addTimeHH, "timeHHMM", each Text.Combine({Text.From([hours], "en-GB"), Text.From([minutes], "en-GB")}, ":"), type text),
  addTimeHHMMSS = Table.AddColumn(addTimeHHMM, "timeHHMMSS", each Text.Combine({Text.From([hours], "en-GB"), Text.From([minutes], "en-GB"), Text.From([seconds], "en-GB")}, ":"), type text),
  chgAllTypes = Table.TransformColumnTypes(addTimeHHMMSS, {{"timeHH", type time}, {"hours", Int64.Type}, {"minutes", Int64.Type}, {"seconds", Int64.Type}, {"timeHHMM", type time}, {"timeHHMMSS", type time}})
in
  chgAllTypes

Next, apply this new table to your data model, and relate time[timeHHMMSS] to yourTable[Timestamp].

Create measures for each of your values that you want to display using your required aggregation e.g.:

_shipTotal = SUM(yourTable[Ship Total Fuel Cons])

Use the time[hours] column and your new measures in your visuals to group measure totals by hours.

Pete

[randomtrader]

Hi Pete,

I have followed your advise and relate the time[timeHHMMSS] to my table. However, I may need clarify what we need to achieve. The data logged doesn't need any aggregation as the data read each time is the actual reading by the instruments.

What we'd like to show in our dashboard is the reading on each hour, rather than every 30-second. So that rather than showing 05/24/2022 12:01:27, 05/24/2022 12:01:57 (30 sec interval), it would pick after an hour so that it would be 05/24/2022 01:01:27 which is 1-hour gap. I would really appreciate help on this one as I am really struggling to figure out how to resolve this. Thank you so much and to everyone for their time.

[BA_Pete · Accepted solution]

Hi @randomtrader ,

You could still use this method, just apply visual/page filters where:

time[minutes] = 1 and time[seconds] = 27.

Pete