Output to arrays in a Cluster

Similar Questions

• Convert a table 1 d of 2 elements of an array, 2D-double cluster?

  Hello

  as the question says:

  How to convert a

  Table 1 d of 2 elements of an array, 2D-double cluster?

  Thanks to Labview 8.6

  THX

  Use"Cluster Bay" in a loop for.

  See the image.

  

  I hope this helps.

• 2D Array output confusion - arrays and loops

  Hello

  I am writing a program for a measure 3-terminal of a FET.

  I use 2 power supplies: for every increase of grid voltage Vg, I'm doing a drain voltage Vd Sweep and save the Id and Vd.

  The attached code, you'll see a Subvi, called "I.V. 2 terminals", which returns a table of voltage Drain (1 d) and a table current Drain (1 d).

  But because the output of the Subvi is in a loop (For increment Vg), the end result is a 2D array.

  Whenever a table is leaving a loop it acquires a dimension.

  So ultimately I don't know what are the clues. How can I prevent the table to have a dimension of their out of the loop For?

  I would like to see the output of the Subvi to go straight out of the loop, intact.

  I have attached the Subvi as well, but I don't think that you will need.

  Thank you! I'm still very new to LabVIEW and I really appreciate your help.

  Nicolas

  You can disable autoindexing on any tunnel by clicking right, with evidence that cause you only get data from the last iteration. Is what you want?

• How to convert an array into a cluster of the same type as the one used to build the table previously?

  I have a group of 6 items I need to change in a table for the part of the VI process.  What I can do, but then I need to change in a cluster of the same type to be used elsewhere.  When I change the table in a cluster, I find myself with a cluster of 9 elements, which of course is not compatible!

  I am attaching snapshots of context-sensitive help in the initial cluster, the intermediate table and the final cluster (bad).  Regarding the photos, the length of the 1 d tables and values in their midst are the only subject to change things.

  Please could someone help by suggesting ways to work around this problem.  Thank you

  Please do not post bitmaps by chaning simply .jpg file name extension. Do not change the file type. There is a good reason why the forums software does not bitmaps, and this is because the file sizes are huge.

  To your question: right click on the table of the Cluster service and select 'Size of Cluster' in the context menu to set the size of the cluster of output.

• Python, call DLLs in LabVIEW: Fatal internal error when accessing output String Cluster

  Hello

  We have compiled a DLL in LabVIEW (TestError.dll) and tried to call it from Python.

  TestError.dll includes 2 functions:

  1 testErreur: cluster 1 entry string, 1 channel indicator

  2 TestError2: 1 channel input, 1 bunch of output string

  What we try to do in Python is actually something like this:

  1 provide values to controls in the functions of the DLL.

  2. call the DLL.

  3 get the values of the indicators.

  What we have seen are:

  1 read/write operations on normal data types (string, digital) indicators/controls are OK

  2. write operation on the Cluster string entry is OK

  3. read operation on the Cluster output string is not OK. The following error is still prompted for:

  «Unrecoverable internal error: 'MemoryManager.cpp', line 437.» LabVIEW version 8.6... »

  Also joined the TestError.prj and python code.

  Grateful if someone can help to explain why we get this error and how to overcome?

  Thank you

  howmean

  What we have seen are:

  1 read/write operations on normal data types (string, digital) indicators/controls are OK

  2. write operation on the Cluster string entry is OK

  3. read operation on the Cluster output string is not OK. The following error is still prompted for:

  «Unrecoverable internal error: 'MemoryManager.cpp', line 437.» LabVIEW version 8.6... »

  Also joined the TestError.prj and python code.

  It is very logical that it does not, and the bad news is, it cannot really be implemented reliable of a process not LabVIEW.

  LabVIEW channels (and tables) are very specific species. They are then called handles, which are pointers to a pointer to a block of memory. If you have a control or indicator on its own, the Prototype configuration allows you to configure this setting as a C. LabVIEW data pointer, when creating the DLL, create heels C for each exported function and place the code to do the translation between the past C pointer to and necessary LabVIEW data handle. For strings and arrays within the cluster, there is no configuration option and the DLL is expected to pass a structure with data handles native LabVIEW in there.

  You may say that creating handles data in your calling process enough to trick LabVIEW. For the input variables that actually CAN sometimes work (but is a delicate and dangerous generally to handle this). There is no way to make it work for output variables. LabVIEW will try to resize handle to fill data in that he wants to make. This resizing is done using internal memory manager of LabVIEW. This will work only if it had been allocated by EXACTLY the same instance of the memory manager. Otherwise, it refers to a different memory segment and catastophally fail. The only way to make this work perhaps, with luck, taking your heart and prayer to the gods, is to lvrt.dll to allocate a handle that you must pass to the DLL. Still find the good lvrt.dll, which will execute your DLL LabVIEW is a major challenge.

• Cluster Type def. array of cluster Type def vs. -best practices?

  Hi all, I'm creating a cluster which is used inside tables throughout my code, of course, I'll need to group and ungroup it several times. My question is:

  Which is preferable? Defining the type def as a cluster, and then add it to a table where it is needed? or by defining the type def as an array of this cluster? It seems to me that it would be preferable to define the type as cluster so def when you group or ungroup it you don't need to index the table first, right?

  Thank you

  Jose

  JMotaB wrote:

  Hi all, I'm creating a cluster which is used inside tables throughout my code, of course, I'll need to group and ungroup it several times. My question is:

  Which is preferable? Defining the type def as a cluster, and then add it to a table where it is needed? or by defining the type def as an array of this cluster? It seems to me that it would be preferable to define the def type as cluster then when you group or ungroup it you don't need to index the table first, no?

  Thank you

  Jose

  Agreed.

  I rarely type tables def but almos always type the cluster that I put in them.

  Ben

• power output of the spectrum in table

  Hello

  I have a signal and I need to make the power spectrum. How can we separate the information contained in the output of the power spectrum cluster? I tried to use the unbundle, but it gives me an error: "the type of the source is table 1 d of the cluster of 3 elements. The sink type is cluster of items 0 "if I click on the unbundle it won't let me select anything, it says empty..." Does anyone have an idea how to solve this, please?

  

  Array of generation is not your friend here actually I replace the generation arrary and the screw Express Power Spectum with 'FFT Power Spectrum and PSD.vi' search the palette or use quick drop to locate him.

  Why shoot there since just filtered signal to rebuild the same waveform?  Wire the waveform to the second power of DSP and FFT spectrum .vi directly

• Is it possible to create a recursive cluster?

  I am creating a clusterA with several numeric fields and string , BUT I need to include an array of variables clusterA. Is it still possible?

  Is this possible with OO in LabVIEW86?

  Thank you!

  <-N->>

  The direct answer to both questions is no. LV allows no recursive data types.

  That does not mean, however, that you cannot do entirely. You can do this, but you lose a type safety:

  • With LVOOP, you create a table of LV object (or another class that inherits from A of). You can now push your class in the table and pull it out. You can use dynamic distribution to exploit or more class specific to make a cast of the elements you get out at runtime for the correct class and then do what you need.
  
  
  • With a normal cluster, you should be able to do something similar by making the type of data in the table a Variant or a string and then flatten your clusters before pushing them into the table. This will require probably more memory allocations, and you're probably better to go the LVOOP route.

• U8 array used in digital form with 0.1 Hz for each array index

  Hello

  I am trying to write a code that allows me to output an array of 36'000 U8 values to an NI USB-6009 digital output.

  The problem starts as soon as I try to set the clock should be 0.1 Hz send me 3600 seconds on my 36 k samples.

  Looks like it's not possible to use DAQmx Digital Out as well as a specific sample clock (or I do something wong).

  Does anyone know a clever solution to this problem? How do they give you a dataset defined with a low of given frequency the digital port?

  Thanks in advance!

  RuferT wrote:

  Ah... Thank you, Jeff!

  Indeed, I need a few accurancy in switching of signals (Timewhise).

  Is it possible with an NI USB-6216 to use somehow the clock shipped equipment to trigger the next table sent to the digital output index?

  I found evidence for it, but by the data sheet, this device also has static DIOs. If I understand your message, static DIOs are the kilelr for my app, right?

  What is the killer for your application is the source of command DIO.  Timed software DIO won't work with high precision, if you need for the material to something that supports triggering of the OID material - in USB format which means a USB 625 x for a M-series or a x 634 for the X series (beware the series 6341 x only supports timing on 1 port material - check the specs for yourself before decide you)

• How to set the value of a variable in a cluster in LabVIEW to c#?

  Hi guys, I'm working on a small c# program, which by using the interface provided by LabVIEW.  And I know that, with the help of lv. SetControlValue (name, value) can set a variable just on the front panel. But in my case, there are several groups on the front panel. Then it confused me how to set the variables in these groups. For example, there is a cluster named clusterA and a variable named a., I tried something like this:

  lv.SetControlValue("clusterA.valueA",1);
  

  but it totally inoperable. Everyone has some experience with this sort of thing? Thank you very much!!

  Hey guys, thanks a lot for all your response. I just found a simple way to solve this problem. For example, there is a cluster named "ClusterA", and there are only two witnesses, who are: an int value named "IntA" (default = 10 IntA value) and a string value named "StringA" (by default the StringA = 'abc'). In c#, if you call the method:

  var clusterA is vi (Array). GetControlValue ("ClusterA");

  you will get a table looks like: clusterA = {10, 'abc'}; So if you want to change IntA 123, you simply do:

  clusterA.SetValue (123, 0); 123 the value, 0 is the index of IntA in clusterA, after this clusterA table = {123, 'abc'}

  After that, simply to make the table in LabVIEW using:

  VI. SetControlValue ("ClusterA", clusterA);

  and now you see the LabVIEW, IntA is changed.

• DAQmx continually update the example output table

  Hello

  I use the example Synch_AI-AO in the DAQmx folder and it works very well for sine waves, pulse, triangle waves, or whatever it is periodic. However, I would like to output an array of noise which produced WhiteNoise, which is continually updated service every N seconds.

  I tried to call the StopCallback and the StartCallback, then after delaying for N seconds, but since I have to be running when I call these callbacks I find myself coming back to the place where I called them before going back to them (like recursion), who kills my program.

  Is there a way update output so that it does not have the question of the recurrence which blocks my program?

  Thank you.

  Hi EricJR,

  Instead of calling the functions StopCallback and StartCallback, have you tried to call the DAQmxWriteAnalogF64 function whenever new samples are generated?

• Cluster vs multiple Shift Registers

  I had a question about good coding practices.

  Say you have several elements (numeric values, strings,... whatever) you need to iterate between the loops.

  Is it better to make a registry change for each item?
  Or cluster, and then move the cluster to a single shift register?

  It is faster than the other? Or better/worse for another reason?

  Cory,

  Yes.  and no.

  I usually create a large cluster of typedef I call indicators and flags (InF).  I put most of the things that need to be passed around with that.  The cluster of error, the State enum and large data tables are usually in separate shift registers.  Table L: shift registers and data are at the top of the loop and error and SRs of the State are at the bottom.  Most of the code goes between them.  Given the help of bundle/Unbundle documents name to which the data is used in a case.  The InF cluster is usually not displayed on the Panel before and may exist only in a Subvi to save space of block diagram.  The data are unbundled indicators as needed for display to the user.

  If you have a situation where speed is concerned, separate data that must be processed everything quickly and optimize for that.  Strings and arrays within the cluster probably cause some memory interesting distribution issues since they change size, that can be an argument in favour of that separates them.

  Lynn

• Adapter virtual cluster

  I installed a cluster 2 (win2008 R2 Ent) nodes, each node has a public network (BIA 2 interfaces), a private network (in pulses) and 2 interfaces (for iSCSI network). The "ipconfig/all" output sequence are Public-> private-> Cluster virtual adapter-> iSCSI interfaces. How will I know that the Cluster virtual adapter is correctly linked to interface "private" network "?

  Hello boomit,.

  You can find the Server forums on TechNet support, please create a new post at the following link:

  http://social.technet.Microsoft.com/forums/en/category/WindowsServer/

• Search for data in a 2d array and trigger a signal when it is recognized

  Hi, I'm looking for an interactive way to find data in a table that contains a 2d array in a cluster. Data in table 2d. I have attached the vi containing the table. I want an interactive method to search for the codes of the 2d table (found in the 1st row) and once found a signal to say it was found. The signal varies in what category data code has been found (if engineering, law or other). BTW the I'm looking are in fact data entry using a barcode reader. Use a table 1 d search function? or is there another method?

  Just to make sure that we are clear here.  We try to find the cluster that contains a point of data in the first row of the table 2D?

  

• After effects CC output Modules to render only Machines

  Hi there, I have a problem with the custom output Module Templates and my cluster:

  After Effects CC 12.0.0.404 (also showing up-to-date cloud Creative)

  Mac OS X 10.8.4 (Mountain Lion last version)

  Mac Pro 2.93 GHz, Radeon 5870 8-Core, 32 GB RAM and with Blackmagic Decklink Extreme 3D +.

  Remote Machines (there are four) are Mac Pros (Quad-core, running 10.7.2 with 16 GB of RAM), by using the ae_render_only_node.txt file in their folder of user Documents.

  The exact error:

  aerender ERROR: no output to the name module model were found.

  I try to get a cluster working with After Effects CC (see exact version above). Unfortunately, I need custom output modules, and I can't seem to get the slaves made to recognize. I found older sons on this particular issue, but no solution has been found.

  I use commandline aerender in OS X terminal to start a render with a basic test scene.

  To simplify things, I tried to test this on a single machine, rendering both slave... Same result everywhere.

  Here is what I tried:

  I have exported a file of .aom of my main machine (where I have my desired custom output Modules) and attempted to bring on the slaves of rendering. However, because the slaves of rendering are return only, (they ae_render_only_node.txt in their Documents folder), the ability to import Modules output is disabled in After Effects (it opens as the rendering engine of the effects after and modify > Templates menu is grayed out).

  Then, I thought I would try to copy the main machine (user) /Users/ / Library/Preferences/Adobe/After Effects/12.0 folder to render slaves, thinking that would get any other file in preference to them to define the output modules. No luck. Launched After Effects (which loads as renderer after effects) and reset my preferences to disk cache (so they were not always of the main machine). Tried again aerender... no luck. Same error:

  aerender ERROR: no output to the name module model were found.

  After that, I thought it would be a good idea to log out of Adobe Creative cloud on the main machine and try connecting the machine slave made with my UserID and password and temporarily remove the ae_render_only_node.txt file. Then I would import the .aom file in the full version of the AE... I tried this and success! The work of renders... they find the output without problem Modules. Only it is, as soon as I log out and switch between using the ae_render_only_node.txt file, the output Modules are not found. Don't know what's going on--if the output Modules are currently disabled by the ae_render_only_node.txt file? Or maybe signature out of my Adobe ID is to remove preferences that determine the output Modules? Don't know where the output Module preferences are stored to be able to tell.

  Next attempt: I thought that I would try my preferences with creative cloud sync. I made sure to check synchronization preferences after effects to ensure that the output Modules are configured to synchronize. I did a sync where I transferred my preferences of the main machine. Then, on the slaves of rendering, I ran synchronization preferences and chose to download preferences. Works when connected, but not when it is used as a single render node. When it comes to a single node returned, he even invites me to download synchronization preferences and exit the Application, which I do, but nothing seems to happen. I retry aerender and still the same error:

  aerender ERROR: no output to the name module model were found.

  I can't seem to find any info on where the output Modules are actually stored (apparently they are not anywhere in the user/Library/Preferences/Adobe/After Effects / folder?). Visited only nodes not allowed to have custom output Modules? Not even for something as simple as the multi-machine with an action sequence post-render set enabled Proxy?

  Any help is greatly appreciated!

  Thank you.

  Today, we released update after effects CC (12.1), which fixes this bug.

  Let us know how things work out for you in the updated version.