Sumproduct help

[anwarawna]

Hi Guys,
First time here,came across the gigantic function below.Care some1 make me understand please?

=SUMPRODUCT((BalDate<=($A5+(ROW($A5)/86400)))*(Type="D")*(BankCode=$H5)*(Amount))-SUMPRODUCT((BalDate<=($A5+(ROW($A5)/86400)))*(Type="W")*(BankCode=$H5)*(Amount))

[NBVC]

Read this article to better understand the many uses of SUMPRODUCT... http://www.xldynamic.com/source/xld.SUMPRODUCT.html

In short, in this case, you are comparing three named ranges to specific criteria. When you compare this way, you end up with arrays of TRUE and FALSE results. The arrays are then multiplied against each other yielding a final array of 1's and 0's (TRUE*TRUE=1, TRUE*FALSE=0, FALSE*FALSE=0, FALSE*TRUE=0). This array is then multiplied by the respectively positioned values in the sum array (Amount). Then that final result is summed to get a single value (sum of all Amount values where all 3 conditions checked were TRUE in the same rows).

In the above formula, you are doing 2 separate SUMPRODUCT functions, and subtracting the result of one from the other to get a final number.

[anwarawna]

Thanks NBVC, Maybe this would help in your Explanation..Cashbook balance is the reference point.

A

Transaction Date

Type

Customer/Supplier

Reference

Description

Inclusive Amount

Tax Code

Bank Code

Account Number

Statement Date

Cashbook Balance

2/28/2013

D

Opening

O/B

Opening Bank Statement Balance

3,400.00

E

B1

BS-399

2/28/2013

3,400.00

-

2/28/2013

D

Opening

O/B

Opening Bank Statement Balance

1,600.00

E

B2

BS-399

2/28/2013

1,600.00

2/28/2013

D

Opening

O/B

Opening Bank Statement Balance

-

E

B3

BS-399

2/28/2013

-

2/28/2013

D

Opening

O/B

Opening Petty Cash Balance

1,000.00

E

PC

BS-399

2/28/2013

1,000.00

3/2/2013

W

XY Solutions

Invoice EXP09

Internet Service Provider

3234.70

A

B1

IS-380

3/2/2013

3,234.70

3/5/2013

W

Hollard

Debit Order

Insurance

2869.90

A

B1

IS-340

3/5/2013

2,869.90

[Bob Phillips]

Most of it is very simple, it is looking for Bank Types of D and W and a Bank Code as in H5(H6,...), but there is one confusing part to me. Why is it comparing the date against a date value in A5(A6,...) but is adding 1 sec per row. Why?

[anwarawna]

Most of it is very simple, it is looking for Bank Types of D and W and a Bank Code as in H5(H6,...), but there is one confusing part to me. Why is it comparing the date against a date value in A%(A6,...) but is adding 1 sec per row. Why?

Bob, Thats the part that confuses me too..i really have no answer to why?

[NBVC]

Possibly trying to get around any possible rounding issues? (Maybe time is included, but hidden in column A or BalDate)