Line Chart - ratio between two data points

[Joern]

Hi,

i have a line chart showing unit prices with irregular dates. I like to show the ration between data points in the same chart. If i have regualar dates from Jan to Dec, this is normally no problem. But I struggle with the irregular dates, as they are not fixed and may change depending on the selection...  is there a function for last existing value or something similar, any suggestion on how to solve it?

[v-cgao-msft]

Hi @Joern ,

You might consider completing the missing unit price in PowerQuery:

Advanced Editor:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("PcvBCQBBCAPAXvJeyCa61Yj9t3EgeN+BqYIo+jpwIKFPwfRKxEgwVuyRZK5kjsjU/95D9wc=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Date = _t, #"Unit Prices" = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Date", type date}, {"Unit Prices", Int64.Type}}),
    tb1 = #"Changed Type",
    alldate = Table.FromList(List.Transform({Number.From(List.Min(tb1[Date]))..Number.From(List.Max(tb1[Date]))},each Date.From(_)), Splitter.SplitByNothing(), {"Date"}, null, ExtraValues.Error),
    #"Merged Queries" = Table.NestedJoin(alldate, {"Date"}, tb1, {"Date"}, "alldate", JoinKind.LeftOuter),
    #"Expanded alldate" = Table.ExpandTableColumn(#"Merged Queries", "alldate", {"Unit Prices"}, {"Unit Prices"}),
    #"Filled Down" = Table.FillDown(#"Expanded alldate",{"Unit Prices"})
in
    #"Filled Down"

Best Regards,
Gao
Community Support Team

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