How to create a certain number of items in qml

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• How to display a certain number of channels...

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  Hello!

  I'm using LabVIEW 8.5 and I'm trying to display a specific number of channels using several channels...
  I can show in a chart, but I display the 16 analog inputs
  that have NEITHER 6024E and I need to view only the channels that have something
  connected to them (I do not know which channel will have something connected to)
  It). If they have a signal (temperature), I want to show only channel/s in a graph and save this channel/s in a txt file. If it isn't
  I don't want to view or save the channel/s.

  How can I do this with DQA Assistance?

  I am able to do all of this using a single channel, I can view in
  a graph, I can save it as a txt file, but I'm not able to do it for the number n
  only active channels. All advice or suggestion will be appreciated.

  Sincerely,

  Julieta.

  The "AI Multi Pt" looks like an old traditional DAQ example. The DAQ Assistant use DAQmx and it hides a lot of code. It's good and bad. Good if you do not need to change anything. Bad if you do. I don't know how you have configured the task, but you can do what you want by simply using the DAQmx screw directly. There are many examples provided with LabVIEW. Open example Finder (help-> find examples) and navigate to hardware input and output-> DAQmx-> analog measurement. I don't know if you need to go into the directory of the temperature or voltage, because as I said, I don't know how your task is implemented.

  Let's take a simple example. If you open the "Acq thermistor samples-SW Timed" in the directory of the temperature you can see it's pretty simple. The first VI is the DAQmx create channel VI. It has a "physical channel" entry. This can be a DAQmx control or it can be a string when you specify the list of channels to collect. So, to do what you want, you just have to create the string corresponding to the channels you want to collect. LabVIEW help describes how to create this string. The other method is to use the technique of this watch aestat. However, what is shown is only a part of what you need to do. You must have a pre-created range of channels and then you select the ones you want.

  See attached example (LV 8.2) to get an idea.

• How can I create a variable number of items on a page

  Hello
  
  Basically, I want to create a page with the kind of news messages and using my own news-component (a canvas with some labels in a certain page layout). So I used the Web service to get an array of messages and now I want to loop through all these messages and print a new components for each of them. Y at - it an easy way to do it, or what I need to do my own DataGrid like actionScript,.
  
  Thank you
  
  Steve

  (1) use a list with a custom itemRenderer
  (2) use a Repeater (probably the easiest)
  (3) use Actionscript for components addChild().

  Tracy

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  How can I create a LabVIEW VI scripted fixed-point number? And set the word length and the length of whole word?

  
  

• How to suggest a certain number to a page element

  Hi people,

  I have a form in Apex 4.2 with three elements of the page: id, code, description.

  Id is a sequence of oracle, that s ok, but the code is a key to the company, where system will suggest a code but the user can change it, put another value.

  My problem is: how to generate this suggestion in this element of the page? The system needs to offer always the maximum number in this field, and if the user put duplicate values, the system will display a message.

  Thank you.

  bsalvador

  Use a default value on the company code key. The default value can be a select statement finds the max value and adds + 1.

  Put a unique constraint on the column that contains the key to company code. Then the database triggers a UK error, if a duplicate key has been entered. Of cause, you can create you own validation for this, but I would avoid writing code redunant.

• How to color and the number of items vary continuously cursor instead of the time?

  I did an animation flash simple as below:

  the first key frame: the second keyframe:

  

  I want to create a slider to make the color of the rectangle varies from red to yellow by the cursor permanently ' movement rather than the hour and make balls fewer 15-8 at the same time.

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  Do you understand how to operate the cursor using code to read its value?  You will need to consider the issue to do this.

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  I'm working on a project with card PCIe-7842R-R series FPGA of NOR. I use to achieve the fast data transfer target-to-host DMA FIFO. And to minimize overhead costs, I would make the size of the FIFO as large as possible. According to the manual, 7842R a 1728 KB (216KO) integrated block of RAM, 108 000 I16 FIFOs items available in theory (1 728 000 / 16). However the FPGA had compilation error when I asked this amount of items. I checked the manual and searched online but could not find the reason. Can someone please explain? And in general, what is the maximum size of the FIFO given the size of the block of RAM?

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  Hey iron_curtain,

  You are right that the movement of large blocks of data can lead to a more efficient use of the bus, but it certainly isn't the most important factor here. Assuming of course that the FIFO on the FPGA is large enough to avoid overflowing, I expect the dominant factor to the size of reading on the host. In general, larger and reads as follows on the host drive to improve throughput, up to the speed of the bus. This is because as FIFO. Read is a relatively expensive operation software, so it is advantageous to fewer calls for the same amount of data.

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  http://zone.NI.com/reference/en-XX/help/371599H-01/lvfpgaconcepts/fpga_dma_how_it_works/ explains the different buffers involved. It is important to note that the DMA engine moves data asynchronously read/write on the host nodes and FPGAs.

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• How to add a certain number of instances based on the number selected in a drop-down

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  I want simple step by step, but not for the few lines at the beginning.

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• How to score a certain number of volumes in my hard drive

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  WINDOWS 7 HOME BASIC

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  -Right click on computer

  -Click on manage

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• How to check if the number is negative in qml

    color: (ListItemData.moneyWonOrLost) ? Color.Black : Color.Red
  

  the money won or lost is in the format 422,846,909.58

  Excerpt from do what suggests BBSJdev:

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• How to get the number of items in a tilelist

  I write for a flex using FlexSelenium application test scenarios and I need to get the number of items in the tilelist component.

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• How to create certain number of spaces at the end of all records

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  I'm queue the select query, where each column value must take a position.
  
  I need to also have a certain number of spaces at the end of each record.
  
  How to make spaces at the end of the recording.
  
  Is anything order them to be included in the select query to get spaces at the end of the recording.
  
  details of the file is like this:-
  
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  Maybe just do a simple function that returns a string of spaces given the desired number of places?

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