How to read time stamps from a spreadsheet and calculate the difference between consecutive time stamps?

Hi,
I am new to Labview. This question might be a joke to some of you here, but any help would be greatly appreciated. I have a spreadsheet with time stamps and power outputs from a generator. I am supposed to calculate the difference between consecutive time stamps, which will act as a delay for the next power output update that needs to be sent. For example, lets say that I have to following data:
Time Stamp                    Power Output
11:00:00 AM                       3kW
11:00:02 AM                       2.9kW
11:00:04 AM                       3.2kW
11:00:06 AM                       3.1kW
The above data doesn't make any sense, but it is just for the purpose of this question.
So, I have to read 11:00:00 AM and 3kW initially - 3kW is the initial request that

Hello
you can simple subtract one time from the other one and so you get the difference. -> Example
Mike
Attachments:
Unbenannt 2.vi ‏8 KB

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How to read time stamps from a spreadsheet and calculate the difference between consecutive time stamps?

Hi,
I am new to Labview. This question might be a joke to some of you here, but any help would be greatly appreciated. I have a spreadsheet with time stamps and power outputs from a generator. I am supposed to calculate the difference between consecutive time stamps, which will act as a delay for the next power output update that needs to be sent. For example, lets say that I have to following data:
Time Stamp                    Power Output
11:00:00 AM                       3kW
11:00:02 AM                       2.9kW
11:00:04 AM                       3.2kW
11:00:06 AM                       3.1kW
The above data doesn't make any sense, but it is just for the purpose of this question.
So, I have to read 11:00:00 AM and 3kW initially - 3kW is the initial request that is sent. Then I have to

Repeated forum post
Please view http://forums.ni.com/ni/board/message?board.id=170&message.id=294435
Regards,
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National Instruments

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1)Now I use Lightrom 5.7 how to upgrade to 6 or CC?
Purchase the standalone upgrade from here: Products
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date,Total size of files uploaded
03-17-2014 09:08,1293334574547
03-17-2014 09:10,1293335326912
03-17-2014 09:13,1293336523562
03-17-2014 09:14,1293337541156
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This CSV will have lines added to it, so the total number of lines will vary.
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I tried searching thinking surely there must be someone else who has tried to do this" but I cannot find anything. I am just not sure how to approach this problem. Any help would be appreciated!

Assuming all of your records are sequential with the last two being the most recent you could use this:
$csv = Import-Csv $csvLocation |
Where-Object { ![string]::IsNullOrWhiteSpace($_.datetime) } | select -last 2
Foreach-Object {
$_.datetime = $_.datetime -as [datetime]
$_."Total size of files uploaded" = $_."Total size of files uploaded" -as [int64]
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$Difference = $csv[1]."Total size of files uploaded" - $csv[0]."Total size of files uploaded"
This uses the index of the imported array and just the last two records. Note that this will give a negative value if the total is less in the later record. Hope this helps!
You could also use
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Calculate the difference between two dates times in infopath form 2013

Hi,
I have an infopath 2013 form that contains three fields:
2 date time and the 3rd contains the difference between the two in hours
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Date Time2 08/22/2014 1:00
Diff Field 3:00

Hi,
Please refer to the following article which matches your requirement exactly.
Calculate the difference between two date picker controls in InfoPath using rules and formulas - no code!
Please mark it answered, if your problem resolved.

How do I calculate the difference between two times?

I am so embarrassed by the fact that I can't figure this out.
Cell B2- 8:00 am
Cell C2- 10:50 am
Cell D2- (How do I get this cell to calculate the difference and say 2:50?)
I know this is probably one of the most basic operations, but for the life of me I can't figure it out. Cells B2 & C2 are formatted for 24 hour clock. But if I tell the system to just subtract the two, I get "0.118". Everything I find on the forum search goes beyond what I need. Can anyone help me?
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KOENIG Yvan wrote:
Numbers states clearly in the Help and the PDF Users Guide that it doesn't know a "duration" object but a time one which is restricted to the range 00:00:0 to 23:59:59.
When I search the U.S. language Numbers User Guide for the word "duration," it is not found.
What may be more clear: _duration is not available but time is_?
Once again your response resemble to a rant againt the Help and the User Guide.
In the Help:
+date-time Any Numbers date/time value. _While you can choose to display only date or time in a cell, all Numbers date or time values contain both the date and time._+
Which wording would be more clear and precise?
TIMEVALUE
+The TIMEVALUE function converts a date, a time, or a text string to _a decimal fraction of a 24-hour day._+
Which wording would be more clear and precise?
TIME
+The TIME function converts hours, minutes, and seconds into a time format.+
+TIME(hours, minutes, seconds)+
+hours: The number of hours _(using a 24-hour clock)._+
+minutes: The number of minutes.+
+seconds: The number of seconds.+
Notes
+You can specify hour, minute, and second values greater than 23, 59, and 59, respectively. _If the hours, minutes, and seconds add up to more than 24 hours, Numbers subtracts 24 hours repeatedly until the sum is less than 24 hours._+
Which wording would be more clear and precise?
In the User Guide:
page 190
+date-time Any Numbers date/time value. _While you can choose to display_+
+_only date or time in a cell, all Numbers date or time values contain_+
+_both the date and time._+
+TIME (page 277) Converts a time to a decimal fraction of a 24-hour day.+
+TIMEVALUE (page 278) Converts a time in a string to a decimal fraction of a 24-hour day.+
TIME
+The TIME function converts the specified time to a decimal fraction of a 24-hour day.+
+TIME(hours, minutes, seconds)+
+• hours: The number of hours _(using a 24-hour clock)_.+
+• minutes: The number of minutes.+
+• seconds: The number of seconds.+
Notes
+You can specify hour, minute, and second values greater than 23, 59, and 59,+
+respectively. _If the hours, minutes, and seconds add up to more than 24 hours,_+
+_Numbers subtracts 24 hours repeatedly until the sum is less than 24 hours._+
+You can also specify fractional values for hours, minutes, or seconds.+
TIMEVALUE
+The TIMEVALUE function converts a time in a string to a decimal fraction of a 24-hour+
day.
TIMEVALUE(date-time)
+• date-time: A date, a time, or a string in any of the Numbers date and time formats.+
As you may check, the infos are exactly the same in the Help and in the Guide.
And I really don't understand how you may find them unclear.
Yvan KOENIG (from FRANCE lundi 4 août 2008 14:57:36)

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      7499 ALLEN      SALESMAN        7698 02-NOV-2005       1600        300         30
      7369 SMITH      CLERK           7902 03-NOV-2005        800                    20
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10 rows deleted.
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      7566 JONES      MANAGER         7839 31-OCT-2005       2975                    20
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      7499 ALLEN      SALESMAN        7698 02-NOV-2005       1600        300         30
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How to calculate the difference between 2 different times being input.

import java.io.*;
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BufferedReader keyboard = new BufferedReader (new InputStreamReader (System.in));
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hi
check this java class
import java.sql.Time;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class util
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Message Edited by jcarmody on 04-23-2009 09:12 AM
Jim
You're entirely bonkers. But I'll tell you a secret. All the best people are. ~ Alice
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How to read time stamps from a spreadshee​t and calculate the difference between consecutiv​e time stamps?

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How to read time stamps from a spreadsheet and calculate the difference between consecutive time stamps?