topic Re: Descriptive Stat on machine utilization in FlexSim Forum

Descriptive Stat on machine utilization

pouya_m — Tue, 22 Jun 2021 18:01:54 GMT

[ FlexSim 21.1.3 ]

How can we get a box plot for the utilization of the machines (in a manufacturing setting) per machine? Also, it might be beneficial to know how to have a descriptive stats on each machine utilization (min,max,avg).

Re: Descriptive Stat on machine utilization

eric_m3 — Fri, 25 Jun 2021 17:59:23 GMT

Hi @Pouya M, just to be sure I'm understanding correctly, when you say you would like a box plot for each machine, does that mean one machine gets one boxplot or each machine in a group gets one point on the boxplot?

As far as I understand it, utilization is calculated continuously based on the time spent in different states. That means that each machine will only have its current utilization recorded, meaning there isn't any recorded past data to make a box plot from. Unless you add something to record the utilization at distinct time intervals, you won't be able to get a boxplot or min, max, avg for one machine.

Re: Descriptive Stat on machine utilization

joerg_vogel_HsH — Sat, 26 Jun 2021 10:52:58 GMT

https://docs.flexsim.com/en/21.1/Reference/CodingInFlexSim/CommandReference/CommandGroups.html#updatestate

FlexSim is event driven. If there is not a change of events, then there won’t be printed an actual new statistic value. You can force an update by the command above, but without any event updating there will be always a difference of dashboard data output and current state in model.

Re: Descriptive Stat on machine utilization

joerg_vogel_HsH — Sat, 26 Jun 2021 11:01:32 GMT

There are some descriptive outputs of statistical states.
https://docs.flexsim.com/en/21.1/GettingData/KeyConceptsData/

The quick properties pane if you highlight an object. The statistical output below an object name if it is highlighted. The dashboard if you pin the red pin icon data to the dashboard. You can group your output data in the dashboard.

Re: Descriptive Stat on machine utilization

pouya_m — Tue, 29 Jun 2021 17:25:00 GMT

@Eric M @Joerg Vogel Thank you for your comments. I saw from another posts that we can have labor utilization per hour. find it in the link below,

https://answers.flexsim.com/questions/23205/hc-utilization-by-hour-charts.html

Do you think there is a hope to get such an analysis for each machine or group of machines?

Re: Descriptive Stat on machine utilization

eric_m3 — Thu, 01 Jul 2021 16:19:53 GMT

Hi @Pouya M, after some searching, it doesn't look like there's a quick and easy way to do this from the chart templates alone (i.e. no box to check). I dug through some previous questions that were hoping to accomplish similar things. I'll include them here to give you something to reference and decide which option might be a good fit for what you're trying to do. I made a small sample model based on Jordan's answer to the first reference below:

Add section to state process flow:

https://answers.flexsim.com/questions/75977/view.html?overrideforward=1

Recording State by time period (would need to add column to calculate utilization): https://answers.flexsim.com/questions/103600/view.html?overrideforward=1

By Time (could possibly subtract previous period to get utilization of current period): https://answers.flexsim.com/questions/68436/how-to-get-dashboard-for-the-utilization-vs-time.html

User Command: https://answers.flexsim.com/questions/31404/view.html?overrideforward=1

Article: https://answers.flexsim.com/articles/49872/operator-utilization-by-shifttime-period.html

Utilization per hour.fsm

Re: Descriptive Stat on machine utilization

eric_m3 — Tue, 13 Jul 2021 22:20:29 GMT

Hi @Pouya M, were one of the answers helpful? If so, please click the red "Accept" button at the bottom of the answer. Or if you still have questions, add a comment and we'll continue the conversation.

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