topic Re: New record per 15 minute interval in App Development

New record per 15 minute interval

blunckc1 — Wed, 27 Sep 2017 08:32:37 GMT

Hey everyone,

I am trying to create a chart that shows how many employees are working per 15 minute interval.

My initial thought to solve this is to run a loop over it so a new record gets created for each 15 min gap between an employees shift start and end time.

For example - Incoming data looks like this:

PID	PAN	ShiftStartDateTime	ShiftEndDateTime
00176263	00176263	27/09/17 09:00	27/09/17 12:00
00176263	00176263	27/09/17 12:00	27/09/17 16:06

Output data would look like this:

PID	PAN	ShiftStartDateTime	ShiftEndDateTime	ShiftDateHour
00176263	00176263	27/09/17 09:00	27/09/17 12:00	27/09/17 09:00
00176263	00176263	27/09/17 09:00	27/09/17 12:00	27/09/17 09:15
00176263	00176263	27/09/17 09:00	27/09/17 12:00	27/09/17 09:30
00176263	00176263	27/09/17 09:00	27/09/17 12:00	27/09/17 09:45
00176263	00176263	27/09/17 09:00	27/09/17 12:00	27/09/17 10:00
00176263	00176263	27/09/17 09:00	27/09/17 12:00	27/09/17 10:15
00176263	00176263	27/09/17 09:00	27/09/17 12:00	27/09/17 10:30
00176263	00176263	27/09/17 09:00	27/09/17 12:00	27/09/17 10:45
00176263	00176263	27/09/17 09:00	27/09/17 12:00	27/09/17 11:00
00176263	00176263	27/09/17 09:00	27/09/17 12:00	27/09/17 11:15
00176263	00176263	27/09/17 09:00	27/09/17 12:00	27/09/17 11:30
00176263	00176263	27/09/17 09:00	27/09/17 12:00	27/09/17 11:45
00176263	00176263	27/09/17 12:00	27/09/17 16:06	27/09/17 12:00
00176263	00176263	27/09/17 12:00	27/09/17 16:06	27/09/17 12:15
00176263	00176263	27/09/17 12:00	27/09/17 16:06	27/09/17 12:30
00176263	00176263	27/09/17 12:00	27/09/17 16:06	27/09/17 12:45
00176263	00176263	27/09/17 12:00	27/09/17 16:06	27/09/17 13:00
00176263	00176263	27/09/17 12:00	27/09/17 16:06	27/09/17 13:15
00176263	00176263	27/09/17 12:00	27/09/17 16:06	27/09/17 13:30
00176263	00176263	27/09/17 12:00	27/09/17 16:06	27/09/17 13:45
00176263	00176263	27/09/17 12:00	27/09/17 16:06	27/09/17 14:00
00176263	00176263	27/09/17 12:00	27/09/17 16:06	27/09/17 14:15
00176263	00176263	27/09/17 12:00	27/09/17 16:06	27/09/17 14:30
00176263	00176263	27/09/17 12:00	27/09/17 16:06	27/09/17 14:45
00176263	00176263	27/09/17 12:00	27/09/17 16:06	27/09/17 15:00
00176263	00176263	27/09/17 12:00	27/09/17 16:06	27/09/17 15:15
00176263	00176263	27/09/17 12:00	27/09/17 16:06	27/09/17 15:30
00176263	00176263	27/09/17 12:00	27/09/17 16:06	27/09/17 15:45
00176263	00176263	27/09/17 12:00	27/09/17 16:06	27/09/17 16:00

I've been able to do this at hourly intervals, but completely stumped at how to do it at 15 minute intervals + have it round down to nearest interval. Start and end times can be at every minute of the day so the rounding will be an important aspect so there aren't any duplicate records.

Here is the script I used to achieve the hourly intervals, this wasn't great as it was rounding up to the next hour and for some reason, it missed hours for some employees...

WorkbrainData:
LOAD PID,
     PAN,
     ShiftStartDateTime,
     ShiftEndDateTime,
     timestamp(floor(ShiftStartDateTime + iterno()/24, 1/24)) as ShiftDateHour
Resident WORKEDWorkbrainData


While ShiftStartDateTime + (IterNo()-1)/24 <= ShiftEndDateTime;

Thanks in advance for the assist!!

Cheers

Carl

Re: New record per 15 minute interval

sunny_talwar — Wed, 27 Sep 2017 08:42:08 GMT

Try this

WorkbrainData:

LOAD PID,

PAN,

ShiftStartDateTime,

ShiftEndDateTime,

TimeStamp(Ceil(ShiftStartDateTime + (IterNo() - 1) * 15/1440, 1/1440)) as ShiftDateHour

Resident WORKEDWorkbrainData

While Ceil(ShiftStartDateTime + (IterNo() - 1) * 15/1440, 1/1440) <= Ceil(ShiftEndDateTime, 1/1440);

Tried with this sample script

Table:

LOAD *,

TimeStamp(Ceil(ShiftStartDateTime + (IterNo() - 1) * 15/1440, 1/1440)) as ShiftDateHour

While Ceil(ShiftStartDateTime + (IterNo() - 1) * 15/1440, 1/1440) <= Ceil(ShiftEndDateTime, 1/1440);

LOAD * INLINE [

PID, PAN, ShiftStartDateTime, ShiftEndDateTime

00176263, 00176263, 27/09/17 09:00, 27/09/17 12:00

];

Re: New record per 15 minute interval

blunckc1 — Wed, 27 Sep 2017 08:58:17 GMT

Thanks Sunny! That works great. Is there any way you know of that can have the output table end at 11:45?

My logic is that each interval represents someone working from (for example) 11:45 to 12:00. Because the shift ends at 12:00, there shouldn't be a ShiftDateHour of 12:00 because the person isn't working between 12:00 and 12:15.

Thanks

Carl

Re: New record per 15 minute interval

sunny_talwar — Wed, 27 Sep 2017 09:00:13 GMT

Change this

While Ceil(ShiftStartDateTime + (IterNo() - 1) * 15/1440, 1/1440) <= Ceil(ShiftEndDateTime, 1/1440);

While Ceil(ShiftStartDateTime + (IterNo() - 1) * 15/1440, 1/1440) < Ceil(ShiftEndDateTime, 1/1440);

Removed the = from <=

Re: New record per 15 minute interval

antoniotiman — Wed, 27 Sep 2017 09:06:01 GMT

Hi Carl,

may be

LOAD PID,
PAN,
ShiftStartDateTime,
ShiftEndDateTime,
timestamp(ShiftStartDateTime + (iterno()-1)*15/1440) as ShiftDateHour
Resident WORKEDWorkbrainData
While ShiftStartDateTime + (iterno()-1)*15/1440 <= ShiftEndDateTime;

Regards,

Antonio

Re: New record per 15 minute interval

blunckc1 — Wed, 27 Sep 2017 10:12:21 GMT

Amazing. Last problem.

Shifts that have a start time of (for example) 07:06 are breaking into increments as follows:

07:06

07:21

07:36

etc.

How can I round those back to 07:00, 07:15, 07:30.

Cheers Sunny!

Re: New record per 15 minute interval

sunny_talwar — Wed, 27 Sep 2017 11:11:03 GMT

May be like this

Table:

LOAD *,

TimeStamp(Floor(ShiftStartDateTime + ((IterNo() - 1) * MakeTime(0, 15, 1)), 15/1440)) as ShiftDateHour

While Floor(ShiftStartDateTime + ((IterNo() - 1) * MakeTime(0, 15, 1)), 15/1440) < Ceil(ShiftEndDateTime, 15/1440);

LOAD * INLINE [

PID, PAN, ShiftStartDateTime, ShiftEndDateTime

00176263, 00176263, 27/09/17 09:06, 27/09/17 12:06

];

Re: New record per 15 minute interval

blunckc1 — Thu, 28 Sep 2017 00:19:30 GMT

Morning Sunny,

That fixes the times that do not start on a 15 minute interval, but for some reason, some of the times that do start on a 15 minute interval are creating a ShiftDateHour at the interval prior.

For example:

ShiftStartDateTime of 25/04/2016 07:00 has a ShiftDateHour of 25/04/2016 06:45:00

But then others are completely fine.

ShiftStartDateTime of 25/04/2016 08:00 has a ShiftDateHour of 25/04/2016 08:00:00

Any ideas what is causing this?

Attached is some data to help.

Thanks for all your advice and help!

Carl

Re: New record per 15 minute interval

sunny_talwar — Thu, 28 Sep 2017 01:14:18 GMT

Try this

Table:

LOAD *,

TimeStamp(If(Frac(ShiftStartDateTime*1440/15) = 0, Ceil(ShiftStartDateTime + ((IterNo() - 1) * MakeTime(0, 15, 1)), 15/1440), Ceil(ShiftStartDateTime + ((IterNo()-2) * MakeTime(0, 15, 1)), 15/1440))) as ShiftDateHour

While If(Frac(ShiftStartDateTime*1440/15) = 0, Ceil(ShiftStartDateTime + ((IterNo() - 1) * MakeTime(0, 15, 1)), 15/1440) < Ceil(ShiftEndDateTime, 15/1440), Ceil(ShiftStartDateTime + ((IterNo() - 1) * MakeTime(0, 15, 1)), 15/1440) <= Ceil(ShiftEndDateTime, 15/1440));

LOAD * INLINE [

PID, PAN, ShiftStartDateTime, ShiftEndDateTime

00176263, 00176263, 27/09/17 09:00, 27/09/17 12:00

00176264, 00176264, 27/09/17 12:00, 27/09/17 16:06

00176265, 00176265, 27/09/17 12:06, 27/09/17 16:06

];

Re: New record per 15 minute interval

blunckc1 — Thu, 28 Sep 2017 04:20:52 GMT

Nearly there! Small bug.

For times that start on the 15 minute interval, the "2nd" interval isn't created. As per output below:

PID	PAN	ShiftStartDateTime	ShiftEndDateTime	ShiftDateHour
00176263	00176263	27/09/17 09:00	27/09/17 12:00	27/09/17 9:00
00176263	00176263	27/09/17 09:00	27/09/17 12:00	27/09/17 9:30
00176263	00176263	27/09/17 09:00	27/09/17 12:00	27/09/17 9:45

There should be a ShiftDateHour of 27/09/17 09:15 but there isn't.

Issue doesn't occur for times that do not start on a 15 min interval

PID	PAN	ShiftStartDateTime	ShiftEndDateTime	ShiftDateHour
00176265	00176265	27/09/17 12:06	27/09/17 16:06	27/09/17 12:00
00176265	00176265	27/09/17 12:06	27/09/17 16:06	27/09/17 12:15
00176265	00176265	27/09/17 12:06	27/09/17 16:06	27/09/17 12:30
00176265	00176265	27/09/17 12:06	27/09/17 16:06	27/09/17 12:45

Cheers

Carl

Re: New record per 15 minute interval

sunny_talwar — Thu, 28 Sep 2017 08:23:00 GMT

Hopefully this will do it

Table:

LOAD *,

TimeStamp(If(Frac(ShiftStartDateTime*1440/15) = 0, Ceil(ShiftStartDateTime + ((IterNo() - 1) * MakeTime(0, 14, 59)), 15/1440), Ceil(ShiftStartDateTime + ((IterNo()-2) * MakeTime(0, 15, 1)), 15/1440))) as ShiftDateHour

While Ceil(ShiftStartDateTime + ((IterNo() - 1) * MakeTime(0, 15, 1)), 15/1440) <= Ceil(ShiftEndDateTime, 15/1440);

LOAD * INLINE [

PID, PAN, ShiftStartDateTime, ShiftEndDateTime

00176263, 00176263, 27/09/17 09:00, 27/09/17 12:00

00176264, 00176264, 27/09/17 12:00, 27/09/17 16:06

00176265, 00176265, 27/09/17 12:06, 27/09/17 16:06

];

Re: New record per 15 minute interval

blunckc1 — Thu, 28 Sep 2017 23:49:37 GMT

You're a legend Sunny! Looks to be working perfectly. Thanks so much!!!