I want to go through my logs and find out how long each output has been on during a specific time period. Pseudo coding it I would find the oldest SET then look for the next RESET entry calculate the duration between the two timestamps and add that time quantity in minutes or decimal hours to a sum then find the next SET and Reset and add that to the sum as well. There will likely be times when there is a RESET event but the SET event is outside my search window and I can ignore those. There will be many different outputs and I want the sum for each distinct "system" and "code" in the code column as the code contains unit information and the other columns are ancillary.
Example
Time window from 11/15/2015 03:00 to 11/18/2015 03:00
Spreadsheet looks like this:
System,Time Stamp,Code,Unit,Event Text,Set/Reset,
1,11/17/2015 21:41,ABCD,A,Temp is too high,RESET,
1,11/17/2015 21:39,ABCF,B,Movement is too slow,SET,
1,11/17/2015 21:41,DCTY,A,Air flow rate is unstable,SET,
1,11/17/2015 21:44,DCTY,A,Air flow rate is unstable,RESET,
1,11/17/2015 21:43,ABCF,B,Movement is too slow,RESET,
1,11/17/2015 21:43,CATG,C,Door ajar,SET,
When manually crunching the numbers I know Unit B had 4 minutes of code ABCF and unit B had 3 minutes of DCTY. Unit C's CATG has 1 day 13 hours and 45 minutes of set time since it has not yet reset before the end of the window. Also there will most of the time be gaps between the reset and the next set event, so there are two modes: time from set to next reset and reset to next set. I only care about the set to reset duration sums as each set to reset sequence may repeat multiple times. My purpose in seeking these durations is right now I have only been using set event frequency to track issues but an event that is not cleared is not highlighted that way.
Bonus: Can this be done without VBA scripting?
This is a solution that addresses the majority of your requirements. In column G starting in G2 you would place the following Array Formula:
=IF(F2="SET",SUM(IF($C:$C=C2,1,0)*IF($F:$F="RESET",1,0)*IF(ISNUMBER($B:$B),$B:$B,0))-B2,"")
This is inputted using CTRL + SHIFT + ENTER. Then copied down to all your rows.
Basically it extracts into an array values of 1 for rows that correspond to the same Code and are "RESET" but only for rows that are "SET". It then multiplies these 2 arrays (not matrix multiplication FYI) by the column with the Time Stamps effectively extracting only Time Stamp that confirm to both conditions. Note that as the formula then sums the array this will only be effective if there is only 1 set of SET/RESET for that code. You can add another condition based on the Unit much the same way.
Not a full solution but I hope a starting point.
Related
I have a column that needs split based on "morning" and "evening" although the morning and evening times move every day (it's based on sidereal day). Calling them morning and evening is a little deceiving though because eventually the time will creep into the next day and I want to keep the groups distinct. It is more accurate to call them group 1 and group 2. It just so happens that they are around 12 hours apart so it looks like you can just separate based on time of day but once the later group creeps into the AM hours, it would start to get counted as "morning" and the earlier group would roll into the afternoon and be counted as "afternoon" See screenshot below for example data.
I need them split so I can perform operations on the value column so I can distinguish the values in the first group from the values in the second group. I thought of doing some sort of flip flop algorithm based on the previous cell but there may be a more elegant way to do it. Also, it's not shown on the example data but sometimes the day may skip but the times more or less continue in the same pattern of increasing by 3-5 minutes each day.
A date with a time stamp is stored as a number in Excel. Days are stored as whole numbers, time is stored in decimals. So, disregarding the date part, look at the decimal of the number and determine if that is before or after the time you want.
0.5 for example is midday, or 12 noon. So if the decimal part of A1 is less than 0.5, the time stamp would be in the morning.
=if(A1-int(A1)<0.5,"before noon","after noon")
It is not clear from your question how sidereal relates to the data in your sample.
I have the following excel result:
I want to group the above result in groups based on sessions i.e. if the time gap between two successive timestamps is greater than 5 minutes, it must be a new row.
For example :
I need some formula to achieve this. As I'm fairly new to Excel this is causing to be a major headache for me. Please help me, if anyone knows how to do it or at least point me in a direction.
Thanks a ton !!!
Judging by your screenshot, it appears your timestamps are actually text values. Text by default is usually left aligned where as numbers are right aligned. You seem to have a space at the end of your time stamp suggesting that it is probably left aligned and therefore text. You can test it with the following formula which will return TRUE if its text.
=ISTEXT(P2)
where P2 is one of your time stamps.
CONVERT TIMESTAMPS TO TIME
There are a variety of ways to do this. Some will depend on system settings. Take a look at the following functions as each might be useable depending on your system. The first two are a guarantee, the last two are more dependent on system settings.
DATE
TIME
DATEVALUE
TIMEVALUE
Something important to remember here is that in excel dates are integers counting the days since 1900/01/01 with that date being 1. Time is stored as a decimal and represents fraction/percentage of a day. 24:00:00 is not a valid time in excel though some functions may work with it.
So in order to convert your time stamp in P2 I used the following formula to pull out the date:
=DATE(LEFT(P2,4),MID(P2,FIND("-",P2)+1,2),MID(P2,FIND(" ",P2)-2,2))
Basically it goes into the text and strips out the individual numbers for Year, Month and Day.
To pull out the time, I could have done the same procedure but elected to demonstrate the TIMEVALUE method which is a little more robust than DATEVALUE and not a subjective to system settings as much. With the following formula I stripped out the whole time code (MINUS"UTC"):
=TIMEVALUE(TRIM(MID(P2,FIND(" ",P2)+1,FIND("UTC",P2)-FIND(" ",P2)-1)))
I also made an assumption that you are not mixing and matching UTC with other time zones which means it can be ignored. Now to get DATE and TIME all in one cell, you just need to add the two formulas together to get:
=DATE(LEFT(P2,4),MID(P2,FIND("-",P2)+1,2),MID(P2,FIND(" ",P2)-2,2))+TIMEVALUE(TRIM(MID(P2,FIND(" ",P2)+1,FIND("UTC",P2)-FIND(" ",P2)-1)))
In the example at the end, I placed that formula in Q2 and copied down
DELTA TIME
Since you want to break your groups out based on a time difference between individual entries, I used a helper column to store the time difference. In my example at the end I stored this difference in Column S. The first entry is blank as there is no time before it. I used the following formula in S3 and copied it downward.
=Q3-Q2
I applied the custom formatting of [h]:mm:ss to the cell to get it to display as shown.
FIND GROUP BREAK POINTS
In my example I am using helper column T to hold breakpoint flags. At a minimum, you will have two break points. Your first time entry and your last time entry. To make like simple I simply hard coded my first breakpoint flag in T2 as 1. Stating in T3, Three checks need to be made. If any of them are TRUE then the next flag needs to be added with a value increase by one. the three checks are:
Is this the last entry
Is the next time delta greater than 5 minutes (means end of a group)
Is this time delta greater than 5 minutes (means start of a group)
Based on those three checks I placed the following formula in T3 and copied down:
=IF(OR(S4="",S4>TIME(0,5,0),S3>TIME(0,5,0)),MAX($T$2:T2)+1,"")
Note the $ on the first part of the range for the MAX function. This will lock the start of the range while the formula gets copied down while the end of the range increases accordingly.
Also the row after the last time entry must be blank. IF it is not blank and has a set value in it, change the S4="" to S4="set value".
GENERATE TABLE
There are multiple ways to reference the flags and pull the corresponding times. a couple of formulas you can look into are:
INDEX / MATCH
LOOKUP
In this example I elected to use LOOKUP though I believe INDEX and MATCH are more appropriate and robust. For starters we want to generate a list of ODD number and EVEN numbers. These represent the start and end of the groups and correspond to the flags set in column T. One way to generate ODD and EVEN numbers as you copy down is:
=ROW(A1)*2-1 (ODD)
=ROW(A1)*2 (EVEN)
The next step is to find the generated number in Column T and then pull its corresponding timestamp in Column Q. I did this with the following formula in V2 and copied down.
=LOOKUP(ROW(A1)*2-1,T:T,Q:Q)
And in W2
=LOOKUP(ROW(A1)*2,T:T,Q:Q)
In assessing how many agents can be added to certain times of day without exceeding the number of seats in the call center, I'm trying to discern how many agents are scheduled for each half hour interval on each day of the week.
Using the =SUMPRODUCT(((A$2:A$1000<=D2)+(B$2:B$1000>D2)+(A$2:A$1000>B$2:B$1000)=2)+0) formula I've been able to identify how many total agents work for each interval, however this doesn't take the day of week into account.
I currently have my spreadsheet setup this way:
K is the start time of the shift, L is the end time of the shift, M to S pulls data from another sheet that shows a 1 if the agent works on that day of the week and 0 if they do not, and then U has all the time intervals listed out. In the example, it's cut off but the columns continue down as needed. U goes to 49 and I've just been using a range from 2 to 500 for the others as we currently do not have that many shifts and I'm leaving space for the moment.
After some Googling, I tried =SUMPRODUCT(--(M2:M500="1"),(((K$2:K$1000<=U2)+(L$2:L$1000>U2)+(K$2:K$1000>L$2:L$1000)=2)+0)) but it only returns #VALUE! so I'm not sure what I'm doing wrong.
Any suggestions of how I can make this work? Please let me know if more information would be useful. Thanks.
=sumproduct(($K$2:$K$1000<=U2)*($L$2:$L$1000>=U2))
That will count the number of occurrences where the start time is less than or equal to the time in U2 AND the end time is greater than or equal to U2. It will check time from row 2 to row 1000. Any time one condition is checked and its true the comparison will result in value of TRUE and FALSE when its not true. The * act like an AND condition while at the same time converts TRUE and FALSE values to 1 and 0. So both conditions have to be true for a value of 1 to result. Sumproduct then totals up all the 1 and 0 to get you a count.
In order to consider the days of the week, you will need one thing to be true. Your headers in M1:S1 will need to be unique (which I believe they are). You will need to either repeat them in adjacent columns to M or in say V1 you have a cell that can change to the header of the day of the week you are interested in. I would assume the former so you can see each day at the same time.
In order to do this you want to add more conditions and pay attention to you reference locks $.
In V2 you could use the following formula and copy down and to the right as needed:
=sumproduct(($K$2:$K$1000<=$U2)*($L$2:$L$1000>=$U2)*(M$2:M$1000))
UPDATE #1
ISSUE 1 Time ranges ending the following day (after midnight)
It is based on the assumption that the ending time is later than the start time. When a shift starts at 22:00 and end at 6:30 as an example, our mind says that the 0630 is later than 22:00 because it is the following day. Excel however has no clue that 0630 is the following day and without extra information assumes it to be the same day. In excel date is stored as an integer and time is stored as a decimal. When you only supply the time during entry it uses 0 for the date.
In excel the date is the number of days since 1900/01/00. So one way to deal with your time out is to add a day to it. This way excel will know your out time is after your in time when the hour is actually earlier in the day.
See your sample data below.
Using your sample data, I did a straight copy of the value in L and placed it in M (=L3 and copy down). I then changed the cell display format from time to general. This allows you to see how excel sees the time. Note how all the time is less than 1.
In column N I added 1 to the value when the out time was less than the in time to indicate that it was the following day and we had not actually invented time travel. I also used the trick of a math operation will convert a TRUE/FALSE result to 1 or 0 to shorten the equation. I used =M3+(L3<K3) and copied down. You will notice in the green bands that the values are now greater than 1.
In the next column I just copied the values from N over using =N3 copied down, and then I applied just a time display format for the cell. Because it is only time format, the date is ignored and visually your time in column O looks the same as column L. The big difference is excel now knows that it is the following day.
you can quickly fix your out times by using the following formula in a blank column and then copying the results and pasting them back over the source column using paste special values.
=M2+(L2<K2)
The next part is for your time check. When looking at the 12:00 time you need to look at 1200 of the current day incase a shift started at 12:00 and you need to look at the 1200 period of the following day. In order to do that we need to modify the the original formula as follows:
=sumproduct(($K$2:$K$1000<=$U2)*($L$2:$L$1000>=$U2)*(M$2:M$1000)+($K$2:$K$1000<=$U2+1)*($L$2:$L$1000>=$U2+1)*(M$2:M$1000))
Note that the + in the middle of (M$2:M$1000) + ($K$2:$K$1000<=$U2+1)? This + acts like an OR function.
Issue 2 Time In/Out 15 minute increments, range 30 minute increments
You may be able to achieve this with the ROUNDDOWN Function or MROUND. I would combine this with the TIME function. Basically you want to have any quarter hour start time be treated as 15 minutes sooner.
=ROUNDDOWN(E3/TIME(0,30,0),0)*TIME(0,30,0)
Where E3 is your time to be converted
So your formula may wind up looking something like:
=sumproduct((ROUNDDOWN($K$2:$K$1000/TIME(0,30,0),0)*TIME(0,30,0)<=$U2)*($L$2:$L$1000>=$U2)*(M$2:M$1000)+((ROUNDDOWN($K$2:$K$1000/TIME(0,30,0),0)*TIME(0,30,0)<=$U2+1)*($L$2:$L$1000>=$U2+1)*(M$2:M$1000))
similar option could be used for the leaving time and rounding it up to the next 30 minute interval. In which case just use the ROUNDUP function. Though I am not sure it is required.
I need to count the number of employee who work in a particular hour:
For ex: My shift is 11:00pm to 8:00am, and I'm looking for the number of employees who's working within 11:00pm to 12:00am. My current shift is within the provided time (1 hour). If I'm looking for 8:00am to 9:00am and my shift is not within the provided time, then no count for me.
The problem is the formula doesn't counting time that passes midnight.
I tried several formulas and converted it into VBA code, but I failed. Here's the formula that I recently converted to code:
=COUNTIFS(B$2:B$7,"<"&F9,C$2:C$7,">"&E9)
and
=SUMPRODUCT(--(B2:B7<F2),--(C2:C7>F1))
Any ideas?
My solution utilizes two formulas.
Your current problem is to tell if a worker who works (for example) between 10:00pm - 3:00am. In order to reduce the risk of confusing the system, I opted to use a 24 hour clock. To minimize the need for input such as a date in addition to the time, I created a table as such:
Each cell contains the formula =IF($H$3>C3,IF(IF(C3>D3,D3+24,D3)>$H$3,"X",""),""). The cells under "Active?" displays an "X" as long as the worker is currently on the clock.
The cell to check how many employees are on the clock, it runs a simple count if formula =COUNTIF(E3:E6,"X") to count how many instances of "x" in the Active column are present.
To operate, you simply extend the range for any additional workers and fill out the cells accordingly. Once the table is populated, you can verify who is working by typing in the desired time in H3. Hope this helps!
My current data is like so:
I use the MIN formula to get the minimum of these times. I am measuring a process time, so the time on T is the least, and T+1 is actually greater. How can I alter my MIN formula to account the 11:51 as the min time?
I can use MAX for above problem, but then when times are 3, 4 , 5 AM, it will give me 5 AM when I want MIN throughout.
One way around this is to add the date to the time. You do not need to display it, but you do need the date as part of the time. JNevill is all over this without coming right out and saying it. You can either do as Jnevil suggest and offsetting all your time by an equal amount so it is all in the same day or you have to add +1 to the time when it crosses the midnight threshold. Adding +1 to your time will tell excel that it is on the following day.
In Excel time is stored as a decimal and days are stored as integers. So any time with no date attached will go from 0.xxx to 1.xxx when +1 is added. The cell will still display xxx as time and the 1 does not enter in to the display. However the 1 will be very important in determining MIN or MAX because of that integer of 0 or 1 out front.
You will probably need to do this through a helper column. Without seeing a column of data it is hard to say if you only need to add 1 or if you will need to add 2 or more depending on how many days the data covers