I'm sure there are LOTS of approaches to this,
but using simple Excel functions, I went with this approach:
Assuming:
From: time is in row 1
To: time is in row 2
Data begins in row 3
I added a blank column at column B to show that that at the start of the day,
no task is being worked on.
I added in cell K3, the formula:
=IF(C3<>B3,IF(C3="X","Start","Stop"),"")
The logic is:
If the previous cell is not the same as the current cell, then a task was
started or stopped.
If the current cell has an "X", then the task was started, if it is blank, then
it was stopped.
copying this formula across and down, you get:
Start Stop Start Stop Start blank blank
blank Start Stop blank blank Start Stop
Start blank blank blank Stop blank blank
( inserted the word "blank" to show where empty cells would show)
Next, in Cell J3 I inserted:
=COUNTIF(K3:Q3,"start")-1
and copied it down.
This counts the number of tims a task was STARTED, then subtracts 1 to count
the number of starts except for the first.
Paul
-----------------------------------------
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By all the means you can,
In all the ways you can,
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-----------------------------------------
From: "jlobrien...@gmail.com" <jlobrien...@gmail.com>
>To: excel-macros@googlegroups.com
>Sent: Thursday, October 9, 2014 1:44 PM
>Subject: $$Excel-Macros$$ Calculating Number of Context Changes in a Series
>
>
>
>Hello!
>
>
>I have a spreadsheet of time tracking data. Each row is a different activity
>and members are tracking time to that activity by entering an "x" for each 15
>minute interval that they completed that activity. I would like to calculate
>per task, how many times they started and stopped that activity.
>
>
>For example, Task A had 2 switches because they started the task, switched to
>another, came back again, switched to another task and came back a third time.
>
>Task B had one 1 switch
>Task C had 0 switches, because once they started, they completed and then
>didn't come back to it again.
>
>
>Is there a calculation that could automatically count the number of gaps once
>a series has started?
>
>
>
>From 7:00 7:15 7:30 7:45 8:00 8:15 8:30
>To 7:15 7:30 7:45 8:00 8:15 8:30 8:45
>Task A x x x x x
>Task B x x
>Task C x x x x
>
>Thank you in advance for any help you can provide!
>Jaime
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