Get the frequency of a graph in real time of the waveform trace

Similar Questions

• make a graph in real time of 1 DBL value at a time, using a loop for

  I have a somewhat interesting programming task where I have the following situation: (I have attached a mac version of vi Labview 2013)

  -Using a patented (pre-made and uneditable) sub - vi, who receives a value of 0 or 1 as input and reads off a single measure, whenever he receives 1 while a value of 0 is necessary to 'reset' of the vi to rehearse a new measure.

  -I would like to run this sub - vi repeatedly in a loop For each value of "measure" are sent to a curve of waveform to give a direct value (real time) for the graphic to display.

  -As it is, I have a vi file that simulates action in a loop but built in a 1 d array to get exuent values sent a waveform curve.

  -I don't know how to make a real-time graph which receives 1 value double both.

  -In addition, I want only every 2nd value sent to the loop for, but I already have several ideas on how to do it.  First of all, I am concerned about the target in real time.

  Kyle Shiel

  A graphic, not a graphic, allows you to update a point at a time. It would be inside the loop for. update the chart or not, you can use a select statement or the structure of the case.

  These are pretty basic functions in LabVIEW. Please see the free tutorials.

• Move the data to the left and to the right on the graph in real time

  I have a 1 d table X and Y Bay 1 d of the XY graph.

  I want to move the chart along the x axis. I not want to act as if I'm grabbing the plotted values and moving them.

  I thought that would be simpler to add a slider value to each of the X 1 d elements of the array. The value keeps adding when I move the cursor is positive and subtracting when the cursor is negative. I want the graphic to move left or right when the cursor moves.

  Any ideas?

  Thank you!

  Michael,

  Here's what I found works. It is much simpler than what you suggested, but there may be a few errors that can result from programming immproper. I'm not sure.

• XY-graph, constant real time of 30 minutes interval

  I want to create an XY Chart with a time interval of 30 minutes. X - minimum scale should be the time that the program starts and the X-range maximum 30 minutes from starting point. Example: From 10:00 program: the chart must be on the scale of 10:00 to 10:30, no autoscaling. After 30 minutes, I want to from 10:30 to 11:00.

  Someone knows how to do this?

  Right click on the XY graph and play with the properties and you should be able to achieve what you want.

  This is the programmatic approach to do this.

  

  Also atatched is the code for the same (registered in the 2012 version of LV).

• The performance improvement chart real time

  I'm working on a simple graph in real time. The data is queried every 50ms, and each survey results in a line one pixel wide, height in pixels (data_point) . The chart scroll such as new data is located on the right, and the oldest values ends up by falling from the left.

  In other words, pretty basic.

  My solution is embarassingly brute-force, in what I just use theMC.graphics.clear () and a loop of lineTo()s for each graphic update. If this appears correctly (and I can control the refresh rate to mitigate CPU burn), it should be painfully obvious why I want to get away from this method.

  I have to scroll or pan the a full graphic pixel to the left (and remove the line to the left) and then just pull a new line on the right, but I don't know where to start. Assuming that such a thing is possible in AS3, someone would be kind enough to point me in the right direction?

  This can be done a few ways.

  First class graphics.

  its safe to assume that you draw with the graphics removed the displayObject?

  Otherwise, you make several updates in the loop.

  Remove the displayList drawing while pulling all parcels.

  Then, BitmapData.

  You can use scroll(1,y) to move the image to the left.  In addition, by using bitmap data, you can lock the bitmapData to limit the refreshment of a given area.

  workign with the image bitmap information is easier to use when drawing...   Of course, this requires a little more math you can't use just line with bitmapData.

  But you can use a matrix to rotate a line at 90 degrees and increase in length.

• cumulative subtraction on real-time data

  Hello

  I'm new to LabVIEW and have a fundamental issue in the case. I am acquiring data on the frequency of multiple CHOICE which I want to treat in order to display the change in mass on a graph in real time!

  I have a formula that says f1 - f2 = const * dm (dm is the change in mass)

  So I want to calculate f1 - f2, f2 - f3, f3 - f4 and so on... I know the concept of shift registers, but am not able to implement in my circuit

  I have attached the VI. Please guide me.

  Thanks in advance!

  Hi netra.

  'circuit' is called "block diagram" in terms of LabVIEW! It is a programming language and no designer of electronic circuits...

  In your VI I place no 'f', 'mass', 'frequency' or 'Multiple CHOICE' indicators. It is really difficult to follow your VI when your description does not provide any useful information.

  Create a shift register in your loop. Store the current value in the shift register. A subtraction to calculate the difference of current and previous value:

  

  The same solution is displayed using a feedback node instead...

• Continues to draw in real time

  Hi all!

  I use the graph XY to plot multiple data receives serial com and I wanted to show the graph in real time. My question is, how to do from the beginning?

  Thank you!

  Why do you use an XY graph instead of a chart?

• graphics update in real time

  Hello

  In the attached VI in labview 8.5, I wanted to show two plots on the same graph in real time.  In other words, for each iteration in the 'loop', updates to the graph.  I am not able to do this with one of the plots (y1) but holds two data sets - are to appear on the graph (that is to say the y1 and y2).  Is it possible to do it in real time?

  Thank you

  hiNi

  It is possible to do it with a XY Chart. The data of the XY-graph accepts for plotting of graphs of mutiple are a set of clusters. The cluster consists of two arrays containing the x values and y. I have included the vi with the solution for you.

  I hope that this solves your problem.

  Best regards.

• Choose what data to track in real time

  Hello, I was wondering if anyone knows how or if there is a Subvi so you can alternate between what data will go on a waveform graph, while the program is running. I have three forces entered in table of vs. time waveform. I can see everything on the graph in real time, but I was wondering if it is possible to switch between just Fx vs time, just the exercise against time, or all forces based on time, etc.

  Any help would be appreciated.

  Thank you!

  There is also a very simple example on our community page.  You can find it here.

  With regard to the structures of the event, Jeff is right, there are some great examples in the finder for example LabVIEW.

• Real-time drawing in flex

  Background:

  I have a table of about 10 000 points, what I need to graph. The original way that was done in PHP was to simply create a 10 000 image pixels wide and put in a box with overflow hidden and use JavaScript to move the image to the left at all times to make it look more lively. When I try to do that in flex using mx:move, the graph is too nervous. I want to go smoother. When I use only 200 of our data points in the chart moves pretty smooth for me. I tried to increase the pace and also used mx:AnimateProperty on 'x', but it seems to be the size of the image that is the problem.

  Current idea:

  My new idea is to have a window of 500 pixels and draw the graph in real time. The theory is that the graph would begin putting 500 points in the area of the first 500 values in the table. then, in each image, each point takes the value of one on his right and the last of them takes the next value in the table. I have not the slightest idea where to begin to make this happen or if it is still the best course of action. Any help is appreciated.

  or perhaps cela?

  http://www.stretchmedia.ca/code_examples/chart_range_selection/main.html

• Updated reading (waverunner 6100) scope of the waveforms?

  I use an oscilloscope (LeCroy) waverunner 6100 and able to get the waveforms of the via drivers downloaded from NI.com. But I would get a waveform only when a new acquisition happens (not not to read the same waveform all the time). How can I do? There is a "read only waveform.vi" available on the site, but it does not work with AUTO trigger mode (I think). I am currently reading in waveforms while loop with "Fetch waveform.vi", but I'm not sure that it reads as "refreshed" display... Here I read some registers (whatever) status or there is already an existing solution?

  Hello Alex Harley,

  Alan LeCroy Tech Support here.  The waveform read various screw run the command 'Arms', so it is not for use in Normal or automatic trigger mode. We recommend that you use this command, because it uses the unique relaxation mode, which is the mode to use when you want your program to control when the scope triggers and so make sure that you're reading data retrospectives that corresponds to a specific triggering event.

  If you prefer to run in automatic mode or Normal mode, you must use the VI 'Wait to acquire full' which is located in
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• How do to accumulate data acquired in the table for a real-time XY graph plotting

  I have current and voltage values which I would like to draw the graph XY.

  Problem is that these are 1 d signals.

  1. Please tell me how I can earn these value in table, so I can have my XY trace.

  2. is there another way to plot in time real graphic XY of the acquired values.

  (I use NI 9205 analog module. I can see real-time signals i.e. time vs current and voltage time vs on my front.

  I need voltage vs current values in real time).

  You can help.

  Thank you.

  Try something like this...

  Notes:

  • If you simulate "as soon as possible", you put a period inside the loop.
  • As the table grows forever, you will be eventually run out of memory.
  • Since the x and y of the simulation is at the same frequency, all points will be on the same line.

• Make a graph that is customized by using the motion of the instrument and in real time

  I am very new to LabVIEW and I need to make a graph or a table with the data being the movement of a device and the x data in real time.  I know how to get the position of the instrument information and how to put in real time for the x axis, but I have no idea how to wire those things in a graph, what type of graph to use, or what other screws I need for the y - data.  I have attached the page I'm working on that... It's kind of just a meli melo of things I thought that may be useful, but I obviously need help.  Thanks in advance.

  Have you so far in your VI, it seems you will ask some data on the location of your device on each iteration of the loop.  In this case, you can use a waveform diagram in the while loop to display these points.  Each new point will be added to the table as they come.  You can do this by writing values to the table as you reach them inside the while loop.  This link should also be able to clear up some confusion about the differences between the tables and charts in LabVIEW.

• ASDM ASA I am able to see only 5 days graphic session, need to get the graph of one month.

  Dear all,

  Metric of history provide only 5 days Gratz, I'm looking graphics of VPN IPSEC tunnel for a month. Please help me how to get .or any configuration changes to the device of the SAA.

  Enabling history Metrics

  Configuration > Device Management > advanced > component history Metrics allows you to configure the

  appliance of Adaptive Adaptive Security to keep a history of many statistics, which can display ASSISTANT Deputy Ministers

  any chart/Table. If you do not select the parameters of the story, you can monitor the statistics in real time.

  Allowing measures of history allows you to view graphs of statistics since the last 10 minutes, 60 minutes, 12 hours.

  and 5 days.

  To configure the settings of the story, do the following:

  For that length of time evolution of the session, you will need to use external snmp server to collect these data

  Cisco Security Manager can be used for this type of information

  See presentation and Q & A sessions

  http://www.Cisco.com/en/us/products/ps6498/tsd_products_support_series_home.html

  More infromation on the control of the use of CSM

  http://www.Cisco.com/en/us/products/ps6498/products_user_guide_list.html

  You can ask the demo lic of Cisco CSM and try it, you will need Windows server to run it.

  You can also try the 3rd party software like Firewall Analyzer management engine, they also have a limited demo

  http://www.fwanalyzer.com/

  Concerning

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  Try Firefox Safe mode to see if the problem goes away. Firefox Safe mode is a troubleshooting mode that temporarily disables hardware acceleration, restores some settings and disables add-ons (extensions and themes).

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  • On Mac: Hold the option key during the startup of Firefox.
  • On Linux: Exit Firefox, go to your Terminal and run firefox-safe-mode
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  If the problem is not present in Firefox Safe Mode, your problem is probably caused by an extension, theme or hardware acceleration. Please follow the steps described in the section Troubleshooting extensions, themes and problems of hardware acceleration to resolve common Firefox problems to find the cause.

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