How to set waveform chart to start data since beginning of run
Solved!
Go to Solution.
Attachments:
TCs.vi 106 KB
You need to check the update mode of your chart.
Strip Chart—Shows running data continuously scrolling from left to right across the chart with old data on the left and new data on the right. A strip chart is similar to a paper tape strip chart recorder. Strip Chart is the default update mode.
Scope Chart—Shows one item of data, such as a pulse or wave, scrolling partway across the chart from left to right. For each new value, the chart plots the value to the right of the last value. When the plot reaches the right border of the plotting area, LabVIEW erases the plot and begins plotting again from the left border. The retracing display of a scope chart is similar to an oscilloscope.
Sweep Chart—Works similarly to a scope chart except it shows the old data on the right and the new data on the left separated by a vertical line. LabVIEW does not erase the plot in a sweep chart when the plot reaches the right border of the plotting area. A sweep chart is similar to an EKG display.
From the help menu:
The waveform chart maintains a history of data, or buffer, from previous updates. Right-click the chart and select Chart History Length from the shortcut menu to configure the buffer. The default chart history length for a waveform chart is 1,024 data points. The frequency at which you send data to the chart determines how often the chart redraws.
Attachments:
resp2.jpg 36 KB
Similar Messages
-
In Transaction code va41 how to set default sales contract start date
Hi ,
In Transaction code " VA41 " how to set default sales contract start date and end date.
Can any one tell me the correct user exit for the same.
Thanks
Basuhi,
u have to use user exits or badis.
use sutable exits mentioned below.
SDTRM001 Reschedule schedule lines without a new ATP check
SDVFX006 User exit: Tax line (transfer to accounting)
V45A0001 Determine alternative materials for product selection
V45A0002 Predefine sold-to party in sales document
V45A0003 Collector for customer function modulpool MV45A
V45A0004 Copy packing proposal
V45E0001 Update the purchase order from the sales order
V45E0002 Data transfer in procurement elements (PRreq., assembly)
V45L0001 SD component supplier processing (customer enhancements)
V45P0001 SD customer function for cross-company code sales
V45S0001 Update sales document from configuration
V45S0003 MRP-relevance for incomplete configuration
V45S0004 Effectivity type in sales order
V45W0001 SD Service Management: Forward Contract Data to Item
V46H0001 SD Customer functions for resource-related billing
V60F0001 SD Billing plan (customer enhancement) diff. to billing plan
Edited by: katigiri linganna on Apr 28, 2009 12:19 PM -
How to use waveform chart for slow data
For slow data acquisition (e.g. 1 sample / sec) in the case of using DMM, how to display those data in a chart / graph?
For this sampling rate, there will be only 1 point in the chart.
How to buffer them and display them in a sequence?
Or, any other method?
thanksHere is a quick example showing chart, graph and XY graph. All YOU need to do is use a chart and wire your DMM reading right to it. Charts have their own built in history (you can change the buffer size by right-clicking > Chart History Length)
For more info see the Examples... Building User Interfaces > Displaying Data > Graphs and Charts
Using LabVIEW: 7.1.1, 8.5.1 & 2013
Attachments:
MultiGraphs.vi 17 KB -
How i can clear a waveform chart with dynamic datas? The normal procedure with handover a empty array doesnt work.
Uwe Augst
Muehlbauer AG
GermanyHi,
here´s a small example with a property node (Historie), everytime you restart that VI, first the chart is cleaned up and than refilled again.
Hope this helps,
AlexMessage Edited by Alex R on 05-03-2005 11:18 AM
Attachments:
Clear Waveform-Chart.vi 21 KB -
Plotting multiple graphs on one waveform chart with dynamic data types
I'm trying to put multiple graphs on one waveform chart and having data agreement errors. I'm wondering if it has anything to do with the fact that dynamic data is being used (I've had no problems with other datatypes in the past). Does anyone know how to correct this problem? I've attached the following .VI. There will be plenty of .VIs on the bottom that won't load, but they are not consequential for this problem.
Thanks!
Brian
Solved!
Go to Solution.
Attachments:
Stiffness Control V1.vi 119 KByou could use stacked plots by right clicking on the chart and clicking on the stacked plots and than on the front panek you can put a bundle function on the FP and hook your signals up
Harold Timmis
[email protected]
Orlando,Fl
*Kudos always welcome
Attachments:
multiplotwaveform.JPG 138 KB -
How to set up Deltas in FI data sources
How to set up deltas for FI Data sources & can any body give me the list of the Finance data sources...
please help me..Standard FI data sources:
0FI_GL_4 (G/L Accounts- line items)
Takes the data from the FI document tables (BKPF/BSEG) that are relevant to general ledger accounting (compare table BSIS).
0FI_AP_4 (AP-line items) and 0FI_AR_4 (AR- line items
Selections are made from tables BSID/BSAD (Accounts Receivable) and BSIK/BSAK (Accounts Payable)
How the data extraction happens?
In FI extraction 0FI_AR_4 and 0FI_AP_4 are linked with 0FI_GL_4 in order to maintain consistent data transfer from OLTP system (it is called coupled data extraction, Ref OSS notes 428571).
Note: Uncoupled" extraction possible with Plug-In PI 2002.2, see OSS note 551044
0FI_GL_4 writes the entries into the time stamp table BWOM2_TIMEST in the SAP R/3 System with a new upper limit for the time stamp selection.
And now, 0FI_AP_4 and 0FI_AR_4 will copy this new upper limit for the time stamp selection during the next data extraction in the SAP R/3 System. This ensures the proper synchronization of accounts payable and accounts receivable accounting with respect to G/L accounting.
Full load: Not a valid choice because of large volumes of detailed R/3 transaction data.
Delta load:
Note: Here the delta identification process works differently for new financial records and for changed financial records.
New Financial accounting line items which are posted in SAP R/3 sytem will be identified by the extractor using the time stamp in the document header (Table BKPF-(field) CPUDT).
By scheduling an initialization IP all the historical data can be loaded into BW from the application tables and it also sets "X" indicator in field LAST_TS (Flag: 'X' = Last time stamp interval of the delta extraction).That means after the last delta, initialization was done.
OLTPSOURCE AEDAT/AETIM UPD DATE_LOW DATE_HIGH LAST_TS
0FI_GL_4 16 May 2007/20:15 Init 01 Jan 1990 15 May 2007
0FI_GL_4 24 May 2007/16:59 delta 16 May 2007 23 May 2007
0FI_GL_4 21 June 2007/18:12 delta 15 June 2007 20 June 2007 X
0FI_AP_4 18 May2007/21:23 Init 01 Jan 1990 15 May 2007
After this, daily delta loads can be carried out depending on timestamp by scheduling delta info packages.
During the delta load , the SAP R/3 system logs two time stamps that delimit a selection interval for a Data Source in table BWOM2_TIMEST(fields TS_LOW and TS_HIGH).
FI -Delta Mode:
A time stamp on the line items serves to identify the status of the delta. Time stamp intervals that have already been read are then stored in a time stamp table (BWOM2_TIMEST).
(Info object 0Recordmode plays vital role deciding delta's .Check the field "delta "in ROOSOURCE /RODELTAM table to identify the image)
The Financial Accounting line items are extracted from the SAP R/3 system in their most recent status (after-image delta method).
AIE: This delta method is not suitable for filling Info Cubes directly in the BW system. To start with therefore, the line items must be loaded in the BW system in an ODS object that identifies the changes made to individual characteristics and key figures within a delta data record. Other data destinations (Info Cubes) can be provided with data from this ODS object.
It uses delta type E(pull) means the delta data records are determined during the delta update by the data source extractor, updated to the delta queue and passed on to BI directly from there. -
How to set the timezone in a DATE datetype?
How to set the timezone in a DATE datetype?
Thanks
Maximus10.5 Date, Time, and Timestamp
The JDBC API follows the Java platform's approach of representing dates and times as a millisecond value relative to January 1, 1970 00:00:00 GMT. Since most databases don't support the notion of a time zone, the JDBC 2.0 API adds new methods to allow a JDBC driver to get/set Date, Time, and Timestamp values for a particular time zone using a Calendar. For example,
ResultSet rs;
Date date1 = rs.getDate(1);
returns a Date object that wraps a millisecond value which denotes a particular date, like January 3, 1999, and a normalized time 00:00:00 in the default time zone. The time component of the Date is set to zero in the default time zone since SQL DATE values don't have a time component. Since a Calendar was not supplied explicitly to getDate() , the default time zone (really the default Calendar) is used by the JDBC driver internally to create the appropriate millisecond value assuming that the underlying database doesn't store time zone information.
The following example retrieves a date value in GMT-Greenwich Mean Time.
ResultSet rs;
TimeZone.setDefault(TimeZone.getTimeZone("GMT"));
Calendar cal = Calendar.getInstance();
Date date2 = rs.getDate(1, cal);
In the example above, a Calendar is passed explicitly to getDate() to inform the JDBC driver how to calculate the appropriate millisecond value. Note that the same result could have been achieved by simply changing the default time zone, and not passing the Calendar explicitly since the JDBC driver will use the default time zone by default.
Note that the two Date objects created above will not compare as equal assuming that the default time zone is not GMT, even if they represent the `same' date.
if (date1.equals(date2))
//never get here
This is because each Java language Date object really just wraps a normalized millisecond time value and these millisecond values will differ across time zones. If an application wishes to compare dates in different time zones it should first convert them to a Calendar.
An application should create a Date object using a Calendar. The application is responsible for specifying the time as 00:00:00 on the desired date when using the Calendar since JDBC uses this convention. In addition when creating a Time value the application must specify a date of January 1, 1970 to the Calendar used to create the millisecond value for the Time as this is the convention specified by JDBC for time.
Above from:
http://java.sun.com/products//jdk/1.2/docs/guide/jdbc/spec2/jdbc2.0.frame10.html
I hope it can help you! -
How to Set up the variables and others to compile and Run Java Programs
Hello,
I have just downloaded the jdk1.6.0_07 and jre1.6.0_07 and installed it in C:\Program files\Java in my Windows XP ,So please tell me how to sett up the enviroment variables etc to compile and run Java Programs from Command Prompt.
thanksTo set the PATH permanently, add the full path of the jdk1.6.0_<version>\bin directory to the PATH variable. Typically this full path looks something like C:\Program Files\Java\jdk1.6.0_<version>\bin. Set the PATH as follows on Microsoft Windows:
1. Click Start > Control Panel > System on Windows XP or Start > Settings > Control Panel > System on Windows 2000.
2. Click Advanced > Environment Variables.
3. Add the location of bin folder of JDK installation for PATH in User Variables and System Variables. A typical value for PATH is:
C:\Program Files\Java\jdk1.6.0_<version>\bin -
How to take waveform chart data and put it into an array
Hello all,
I am new to programming in Labview, and am learning basically by watching youtube video and such. My question is how to take a set of random data that I have written code for and linked to a waveform chart, and put the data into an array so I can calculate the mean of the data set. If there is an easier way to calculate the mean of the data set I am all ears, but I need to be able to display the mean on the front panel each time the code is run. I have attached a file of my code.
Thanks
Attachments:
CA1.vi 11 KBWelcome.
If you have not done so, look at the on-line tutorials on Getting Started with LabVIEW on the NI web site.
A chart has a property known as History which retains some previous values. You can get access to the the History property by popping up on the block diagram terminal of the chart and selecting Create >> Property Node. Note that the history length can be set via a pop up menu. The default length is 1024.
Other comments: When you know the number of iteration in advance you should use a for loop rather than the while loop.
You can also use an autoindexing tunnel at the boundary of the loop to create an array. It only contains the values from the current run, unlike the chart history which can retain values between runs (as long as the VI remains in memory). Watch the two Mean indicators as you run this VI several times.
The error wire is to assure that the history property node runs after the loop. Disconnect the wire and watch the Mean and Mean 2 indicators carefully.
The Wait is to slow things down a bit so that you can see what is happening.
Lynn
Attachments:
CA1.2.vi 11 KB -
How to log waveform chart data in any file at specific interval
i am using labview 7.0. i want to save waveform chart data in the file at specific interval given by user. Please give me solution for that.
falgandhaOpen the example finder (Help>>Find Examples) and look at the Write Datalog File example. You can also convert your data to text to save a simple text file. Also, the tutorials in the following links probably cover something similar.
To learn more about LabVIEW, I suggest you try searching this site and google for LabVIEW tutorials. Here, here, here, here and here are a few you can start with and here are some tutorial videos. You can also contact your local NI office and join one of their courses.
In addition, I suggest you read the LabVIEW style guide and the LabVIEW user manual (Help>>Search the LabVIEW Bookshelf).
Try to take over the world! -
How to set waveform time duration in labview
please can anyone help me with how to set the waveform time duration in labview (for real time monitoring and measurement). i need to monitor the system in waveform chart with the time duration 10:00AM TO 4:00PM with the appropriate date. i urgently need any useful information. thanks
If you are trying to manipulate the waveform data itself, look in to the Get Waveform Subset VI.
If you are trying to alter the chart to show a specific section of the data, look in to the Chart's properties using a property node. Specific properties you want are XScale and YScale values.
And like Dennis said, please provide what you've been trying to do. This makes it easier to help. -
Using waveform chart to collect data
Hello,
I am a new user to labview, however I have been using it for a while now.
I have a simple problem.
My model runs a drive cycle for 1400 secs.
I want to record data for a sample rate of 1 sec.
However, When I try to run the model and export it to excel it shows data for a sample rate of 0.1 seconds. How can I change that?
Also, what can be the maximum buffer size of the waveform chart?Hey govindgoal,
The max buffer size is pretty massive so don't worry about that. I would post your code or at least the part which is recording the data for people to help debug. It would seem however that you have some timing issues with your application.
Regards
Andy
"To 'G' and not to 'C', this is not a question!" -
How to pass waveform chart in a loop in a sub vi to calling vi
It has been awhile since I made my last application. It has escaped me how to run a VI with a loop in it as a sub VI and still pass the waveform chart up to the calling VI. I am trying to use the Bridge Continuous example as a sub VI and pass that waveform chart up to the calling VI that selects which load cells to monitor. But when i run the calling VI it stops at the sub VI with a green arrow.
Your acquisition needs to run in parallel with your main loop. You should also use a queue or notifier to send that parallel process commands (like to stop). I would use a User Event to send the data from your aquisition to your main loop's event structure. You can then update the chart inside of the event structure.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines -
How Does the Waveform Chart Allocate Memory in LabVIEW?
I am not understanding the Memory allocation concept in chart. When it will be happened? If it is in run time, I am getting the exception before running the application itself. Can you help me on this?
> I am not understanding the Memory allocation concept in chart. When it
> will be happened? If it is in run time, I am getting the exception
> before running the application itself. Can you help me on this?
This depends a bit on the datatype. For all charts except those with
the waveform datatype wired up, all memory is preallocated when the VI
loads or compiles. Some datatypes, like the 2D array can add plots at
runtime, and obviously the chart history will need to reallocate when
that occurs.
If the chart has a waveform or array of waveforms wired to it. It has no
way of knowing how many points are in a waveform and will need to
allocate them as they arrive. It has a top array of waveforms that is
preallocated.
I answered your question a
bout the chart, but I'm not sure if this is
what is causing your problem. If you are setting the chart history to a
very large number, you might try smaller numbers and see if that is part
of the problem. Otherwise it might be some other part of your diagram.
Greg McKaskle -
Waveform chart. Send data to Excel
I am monitoring the output voltage from a electronic circuit using LabView 7.1 and a DAQ card.
I have been able to view the output voltage using a Waveform Chart but i have been unsuccessful sending the data to a file. Only one data point gets saved each time.
I am using the "Write to Spreadsheet File .vi "
Could someone tell me what i am doing wrong?
Please see the program attached below.
Attachments:
Attempt 3.vi 26 KBYou can build a 1D array as your loop runs. Where your data exits the while loop, right click on the border and select 'Enable Index'.
If you want to save data continously, you need to move your 'Write to spreadsheet file' vi inside your while loop. As it is, only the last data point will be saved when you stop your loop.
You will also need to connect a control or constant to the file path input so that you do not get a file dialog every time your loop iterates. Further, connect a True constant to the 'append to file?' input so that you do not overwrite data.
Also, you may want to insert a wait period in your loop to allow other processes to run.Message Edited by DavidT on 04-27-2005 09:16 AM
Maybe you are looking for
-
How do i get my abbs back on my phone
how do i get my abbs back on my phone i pressed the wrong button my a mistake cheers
-
Trying to re-download & re- install my iPhoto since replacing my SSD. Its no longer free & I have had it downloaded/ installed it when I installed OS Mavericks the first time. Now since the SSD is replaced, not sure it recognizes it & does not let me
-
After moving itunes library paths are still set to old drive
I have moved my itunes library from my hard drive to a network connected NAS drive. The problem I'm finding is that itunes now can't find the songs in the library as they still show (when looking at 'Get info') the path to the old location). I have d
-
Sql server 2005 log file shrinking issue.
hi, one of my production server database log file size is increasing continuously,we can take log backup but no use, we can change the database recovery model from full to simple we shrink the log file, log file shrink successfully but space is not
-
Windows size doesn't adapt when switching displays
Hi everyone, I have a macbook pro 13" 2012 that I often use with a docking station to plug it to a biger LCD screen. Everything is working perfectly well except that when I plug it off from the docking station, all application that were opened when I