Help:....Time values

Hi
how can I change the time values into a number to convert, I want the time values into a file, just like in sinussignal in a separate column ..
I've tried the time-function in(array-erstellen) to put it, but does not .. how does it work?
hallo
Wie kann ich die Zeitwerte in eine Zahl umwandeln oder so , ich haette gerne die Zeitwerte neben die Signalwerte von (Sinussignal)
in die datei zu sehen.(in eine eigene Spalte).
Wenn ich versuch die Zeitfunktion mit (Array erstellen) zu schliessen, bekomme ich eine fehler. wie kann ich das machen ???
Attachments:
beispiel zeit.vi ‏72 KB

Hi Paolo83,
you can use the "to double precision float" function.
Mike

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news:[email protected]..
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What you wanted to know about Time values

Hello
I tried to gather in a single document the useful infos about the use of time values in Numbers.
I must thanks pw1840 which checked the English syntax.
Here is the text only document.
Files with the sample tables are available on my iDisk:
<http://idisk.me.com/koenigyvan-Public?view=web>
Download:
ForiWork:ForNumbers:Time in Numbers.zip
*STORED DATE-TIME VALUES - BASICS*
Numbers clearly states that it stores date-time values, no less no more. This means these values consist of two parts: a date and a time. It is important to note that both parts are present even if only one of them is displayed.
When we type the time portion only, it includes the current date even though it may not be displayed.
But when we apply the formula: =TIME(0,0,ROUND(TIMEVALUE(B)24*6060,0)), we get a date-time value whose numerical value of the date portion is 0. This means, in AppleLand, 1 janvier 1904. Such a date-time allows us to make correct calculations, but there are two true drawbacks:
1) Since TIMEVALUE() returns a decimal number, when we calculate the corresponding number of seconds we MUST use the ROUND() function. While calculations with decimal numbers give the wanted value, they may not be exact and be off by + or - epsilon. And
2) The structure of Numbers date-time values is such that the time part is always in the range 0:00:00 thru 23:59:59.
There is also a detail which seems annoying to some users. The minimal time unit is the second because time values are in fact a pseudo string representing the number of seconds between the date-time and the base date-time, 1 janvier 1904 00:00:00.
-+-+-+-+-
*TIMEVALUE() FUNCTION*
When Numbers Help states that the TIMEVALUE() function "converts a date, a time, or a text string to a decimal fraction of a 24-hour day.", it means that the operand for the function TIMEVALUE() may be something like:
31/12/1943, 31 décembre 1943, or 31 déc. 1943 described as a date;
1:12:36 or 1:12 described as time; or
31/12/1943 23:59:59 described as a text string.
The date may also be 31/12/43 but here the program must guess the century. According to the rule, this one will be 31/12/2043 (yes, I am very young).
All of this is not exactly what we are accustomed to but it is perfectly logical as described. My guess is that those who don't understand are simply clinging to old habits and are reluctant to adopt an unfamiliar approach .
-+-+-+-+-
*ELAPSED TIME (DURATION)*
Given a table whose 1st row is a header, I will assume that column B stores starting-time values and column C stores ending-time values. Both do not display the date component of the date-time values. We may get the difference in column D with the formula:
=IF(OR(ISBLANK(B),ISBLANK(C)),"",TIMEVALUE(C)-TIMEVALUE(B))
which returns the elapsed time as the decimal part of the day.
We immediately encounter a problem. If ending-time is the day after the starting-day, the result will be negative. So it would be useful to revise the formula this way:
=IF(OR(ISBLANK(B),ISBLANK(C)),"",IF(TIMEVALUE(C)>TIMEVALUE(B),0,1)+TIMEVALUE(C) -TIMEVALUE(B))
But some of us may wish to see results in the traditional format which may be achieved using:
=IF(OR(ISBLANK(B),ISBLANK(C)),"",TIME(0,0,ROUND((IF(TIMEVALUE(C)>TIMEVALUE(B),0 ,1)+TIMEVALUE(C)-TIMEVALUE(B))24*6060,0)))
-+-+-+-+-
*DURATION SUMS > or = 24 HOURS*
In the examples above, we always assumed that the durations where smaller than 24 hours because Numbers states clearly in the Help and the PDF Users Guide that time values are restricted to the range 00:00:0 to 23:59:59. For longer durations we must fool Numbers.
First problem: we are adding several time durations. Each duration is in the authorized range and the result is greater than 24 hours.
As before, starting-time values are in column B, ending-time ones are in column C, and the elapsed time value is in column D. The formula is:
=IF(OR(ISBLANK(B),ISBLANK(C)),"",IF(TIMEVALUE(C)>TIMEVALUE(B),0,1)+TIMEVALUE(C) -TIMEVALUE(B))
in column E, the formula for the cumulative elapsed time value is:
=SUM($D$2:D2)
in column F, converting to time format, the formula is:
=TIME(0,0,ROUND(MOD(E,1)24*6060,0))
in column G, the formula for showing more than 24 hours in the day/hour/minute format is:
=IF(E<1,"",INT(E)&IF(E<2," day "," days "))&F
in column H, expressing total elapsed time in total hours using the traditional time format, the formula is:
=IF(E<1,F,INT(E)*24+LEFT(F,LEN(F)-6)&RIGHT(F,6))
in column I, expressing total elapsed time in total hours using the traditional time format, an alternate formula is:
=IF(E<1,F,INT(E)*24+HOUR(F)&":"&RIGHT("00"&MINUTE(F),2)&":"&RIGHT("00"&SECOND(F ),2))
Of course the user would choose the format used in column G or the one in column I for his table. There is no need to keep all of them. It would be fine to hide column F whose contents are auxiliary.
Second problem: individual durations may be greater than 23:59:59 hours.
Again, column B is used to store starting date-time, column C stores ending date-time, and durations are calculated in column D. Since B and C are storing full date-time values, we may use this simple formula to find the duration:
=C-B
in column E, the time portion of the duration given in time format is:
=TIME(0,0,ROUND(MOD(D,1)24*6060,0))
in column F the formula to show the duration as days/hours/minutes is:
=IF(D<1,"",INT(D)&IF(D<2," day "," day(s "))&E
in column G we give the elapsed time in total hours using a time format. The formula is:
=IF(D<1,E,INT(D)*24+LEFT(E,LEN(E)-6)&RIGHT(E,6))
in column H we give the elapsed time in total hours using a time format. An alternate formula is:
=IF(D<1,E,INT(D)*24+HOUR(E)&":"&RIGHT("00"&MINUTE(E),2)&":"&RIGHT("00"&SECOND(E ),2))
If the duration is greater than 24 hours, the results in columns E and F are not a time value but a string. So the value in column D (which is time duration only) is useful.
-+-+-+-+-
*PROBLEM WITH ENTERING TIME*
When you wish to enter 12:34 but 12 is the number of minutes, remember that Numbers will decipher this as 12 hours and 34 minutes. Simple tip:
Assuming that your original entry is in column B, then in column C use this formula to align the minutes and seconds for proper Numbers interpretation:
=IF(ISERROR(TIME(0,LEFT(B,SEARCH(":",B)-1),RIGHT(B,LEN(B)-SEARCH(":",B)))),"",T IME(0,LEFT(B,SEARCH(":",B)-1),RIGHT(B,LEN(B)-SEARCH(":",B))))
-+-+-+-
*MISCELLANEOUS NOTES*
• Of course, the addition of two dates and multiplication or a division applied to one date means nothing and would generate the red triangle announcing a syntax error.
• We may add a time value to a date-time: If B contains a date-time and C contains a time, the following formula will return the sum of the two values:
=B+TIMEVALUE(C)
• We may strip the time value of a full date-time one with the formula: =DATE(YEAR(B),MONTH(B),DAY(B))
• Just as a reminder,
=EDATE(B, 3) adds 3 months to the pure date stored in B
so, of course,
=EDATE(B, 12) adds one year to the pure date stored in B
• If B and C store date-time values,
=C-B returns the difference in decimal days.
=DATEDIF(B,C,"D") returns the number of days between the two pure dates. It's identical to =DATE(YEAR(C),MONTH(C),DAY(C))-DATE(YEAR(B),MONTH(B),DAY(B))
=DATEDIF(B,C,"M") returns the number of months between the two pure dates.
=DATEDIF(B,C,"Y") returns the number of years between the two pure dates.
Three other variants are available which use the parameters "MD","YM" and "YD".
Yvan KOENIG (from FRANCE lundi 25 août 2008 15:23:34)

KOENIG Yvan wrote in his "*STORED DATE-TIME VALUES - BASICS*" section:
The minimal time unit is the second because time values are in fact a pseudo string representing the number of seconds between the date-time and the base date-time, 1 janvier 1904 00:00:00.
This is not exactly true. Numbers files store date-time values in a string format consistent with ISO 8601:2004. This format explicitly includes year, month, day, hour, minute, & second values.
This may be verified by examining the uncompressed index.xml file in a Numbers package. For example, the first day of 1904 is stored as cell-date="1904-01-01T00:00:00+0000" & of the year 0001 as cell-date="0001-01-01T00:00:00+0000." This format is not a numeric value of seconds from a base date-time, often referred to as a "serial time" format, that is used in applications like AppleWorks (or Excel?).
Note that the time value (all that follows the "T" in the string) actually has four components, the last one (following the plus) representing the time zone offset from UTC time in minutes. AFAIK, Numbers does not set this to anything besides "+0000" but interestingly, it will attempt to interpret it if set by manually editing the file. For example, change cell-date="1904-01-01T00:00:00+0000" to cell-date="1904-01-01T00:00:00+0120" & the cell will display the last day of December of 1903 as the date, but will still show the time as 00:00:00. This suggests a future version of Numbers might be time zone aware, but currently it is unreliable & not fully implemented.
Anyway, Numbers does not use the first day of 1904 as a reference for stored date-time values, although it will add that date to "dateless" time values imported from AppleWorks spreadsheets. Although I have not verified this, I believe it will also seamlessly translate between ISO & serial time formats as needed for Excel imports & exports, using the first day of 1900 as needed.
Some other things to note about the ISO standard:
• It permits fractional time values in the smallest time unit present, so for example "T10:15:30" could be represented as "T10:15.5" but Numbers does not support this -- the cell will appear empty if the index file is manually edited this way.
• It does not stipulate whether date-time values represent intervals or durations (although it includes an explicit format for intervals between any two date-time values, known as a period). This means a future version of Numbers could support durations without the addition of a new data storage type, but legacy & import/export issues could make this too impractical to implement.
• It supports a variety of other formats, including date-only, time-only, day-of-year, week-of-year, & various truncations (just hours & minutes, for example). All are unambiguous so a future version of Numbers could support them, but files generated with those versions would not be backwards compatible with the current version.
For completeness, I will add that instead of using complex formulas to manipulate single-cell date-time values in Numbers, it is sometimes more straightforward to use multiple cells, one for each unit of time (for example, days, hours, minutes, & seconds), plus simple arithmetic formulas to combine them. Since each unit is a simple number, this results in highly portable, accurate, & "future-proof" tables, especially for durations. This is particularly useful for multimedia work in which the units might include video or film frames or audio samples.

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It works fine but now we want to implement this webdynpro in our portal. The user shall get a link like this
https://xxx.yyy.zzz/irj/portal/webdynpro-test?wi_id=000000004332. With this link he will navigate directly to the webdnypro (quicklink-function).
The problem is that i don't know how to transfer the parameter WI_ID in the url to the webdynpro.
It's no problem to fix the WI_ID in the application parameter properties but this is not what we want.
Is it possible to transfer the url parameter to the application parameters of the webdynpro iview ?
Thanks in advance.
Best Regards
Mirko Berscheidt

Hi Mirko,
The first thought I had is if your scenario makes sense at all. Because you might send out the links, but probably the iView will also be accessible via navigation, and in that case this additional parameter won't be there!?! (And if the iView is not accessible by navigation, then why going the way via the portal and not the direct way to the application like with your first link given?!).
Anyhow, I think this should be possible by using the AppIntegrator, see The customer exit of the Application Integrator
For an example about how to add individual values to users which you then can add to the URL see this discussion: App Integrator, and custom URL parameters using Customer Exits - this might be a possibility that each user can call the "same" iView but in fact the app integrator then would be fired with different URL parameters (per user).
Hope it helps
Detlev

How to use time values from graph or chart for other calculations

iam generating an ultrasonic signal of frequency 500k. In the equation i need the values of time axis of the graph or chart for calculationg the envelope of the graph. please help me how to use the x-axis time values.I have tried by writing in spread sheeet or by using arrays. here iam not able to get only 1 dim time values.
AshwiniP

Use a property node

Can I count the PWM pulses and note the timer value simulataneously.

Im using 6024E. I want to be used for 1-phase motor control. I could generate PWM pulses and read the feedback analog current, but I am unable to read the velocity of the motor. Counting PWM pulses(generated by sensor for each degree of rotation) and reading the digital timer value simultaneously to calculate velocity of the motor. If any body can give the solution it will be appreciated
Attachments:
motor_control_ver1.0.llb ‏210 KB

Hello;
In case you can read a digital pulse train that would give you the speed of the motor, you can use one of the counters of the DAQ board you have to accomplish that.
You can configure the counter as buffered event counter, hook up the digital pulse train to the counter gate, and since you have the frequence of the internal timebase that is connected to the counter input, you can calculate the speed of the motor by having the count values that are stored at the event of a gate input pulse.
Hope this helps.
Filipe A.
Applications Engineer
National Instruments

Help:....Time values

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