Matrix calculus - specific formula for matrix

[Harris]

Hi,
I want to calculate the difference in values between versions of files in matrix visualization. I tried to present it as simply as possible on a picture. I am also including the pbx file

Sample.pbix (126.0 KB) Sample.xlsx (487.1 KB)

[EnterpriseDNA]

Hi @Harris, we aim to consistently improve the topics being posted on the forum to help you in getting a strong solution faster. While waiting for a response, here are some tips so you can get the most out of the forum and other Enterprise DNA resources.

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[mno]

Hi Harris,

That was quite a thinking
Why don’t you try this solution?

Sample_v2.pbix (194.5 KB)

Data:

Outcome:

The following steps were taken:

1. Modify data table in power query.
   a) Each file data are presented in separate column.
   b) Information about file name is kept on the row level.

2. Create measure that sum values and removes filter from file name.

File_1v =
CALCULATE (
    SUM ( 'Arkusz1_support'[File 1] ),
    REMOVEFILTERS ( 'Arkusz1_support'[File] )
)

3. Final Measure:

File_1 =
SWITCH (
    TRUE (),
    SELECTEDVALUE ( 'Arkusz1_support'[File] ) = "File 1", [File_1v] -[File_1v],
    SELECTEDVALUE ( 'Arkusz1_support'[File] ) = "File 2", [File_1v] -[File_2v],
    SELECTEDVALUE ( 'Arkusz1_support'[File] ) = "File 3", [File_1v] -[File_3v],
    SELECTEDVALUE ( 'Arkusz1_support'[File] ) = "File 4", [File_1v] -[File_4v],
    BLANK ()
)

The measures was repeated as many times as different file names.
If there are much more files than another solutions would be advised.

I hope all is clear

Take care,
Mariusz