Google Spreadsheet中的动态减法 [英] Dynamic subtraction in Google Spreadsheet

问题描述

请查看我的电子表格: https ://docs.google.com/spreadsheets/d/1K5Btg5fFS590G7vZsFiepY-2VTPhzJIlkKK_o-9Ag7E/edit?usp = sharing

Please have a look at my spreadsheet: https://docs.google.com/spreadsheets/d/1K5Btg5fFS590G7vZsFiepY-2VTPhzJIlkKK_o-9Ag7E/edit?usp=sharing

我如何获得:

• C2显示Start weight(即"100,0")
• C3显示C2-Daily weightloss(即"99,7701")
• C4显示C3-Daily weightloss(即"99,5402")
• C5显示C4-Daily weightloss(即"99,3103")
• ...等等.

• C2 to show Start weight (i.e. "100,0")
• C3 to show C2 - Daily weightloss (i.e. "99,7701")
• C4 to show C3 - Daily weightloss (i.e. "99,5402)
• C5 to show C4 - Daily weightloss (i.e. "99,3103")
• ...and so on.

显然，挑战在于动态地执行此操作，因为所有用户提交的数据以及所有计算出的数据都可能会发生变化.

The challenge is obviously to do this dynamically since all the user-submitted data, and consequently, all the calculated data might change.

我认为可以/应该使用ArrayFormula解决此问题，但我不知道如何解决.

I think this can/should be solved with ArrayFormula somehow but I don't know how.

推荐答案

=ARRAYFORMULA(IF(A2:A;
 MMULT(TRANSPOSE((ROW(INDIRECT("B2:B"&COUNTA(A1:A)))<=
       TRANSPOSE( ROW(INDIRECT("B2:B"&COUNTA(A1:A)))))*
      {B2; TRANSPOSE(SPLIT(REPT(J5*-1&"♦"; COUNTA(A3:A)); "♦"))}); 
 SIGN({B2; TRANSPOSE(SPLIT(REPT(J5*-1&"♦"; COUNTA(A3:A)); "♦"))})^2); IFERROR(1/0)))

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