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visualize changes in data based on previous date

Hi All,

I need to visualize (table) two keyfigures and their change over time, based on one Dimension.

This is These Points were you see a Change in a line Chart for example.

I tried to solve it with previous() and peek() in the script, with before(), above() to query the values from the date loaded before... but could not manage to get it running. Data should always be compared to the previous date loaded.

data is available always for today and today-1 (to -4) weeks.

Data example:  

Dimension1 Date Value1 Value2
A27.08.20163020
A03.09.20163020
A10.09.20164010
A17.09.20164020
B27.08.20161010
B10.09.20162030
B17.09.20162030

The result should show e.g. that keyfigure "Value1" for Dimension "A" changed from 30 on 03.09. to 40 on 10.09.

possible Result: 

   

Dimension1KeyfigureChangeFromDateChangeFromChangeToDateChangeTo
AValue103.09.20163010.09.201620
AValue203.09.20164010.09.201610
AValue210.09.20161017.09.201620
BValue127.08.20161010.09.201620
BValue227.08.20161010.09.201630

any help appreciated!

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