Store an array of Boolean as a text file

Similar Questions

• Write array of strings in the text file delimited by tabs without Report Generation Toolkit

  I find that writing in the File.vi worksheet does not Append REAL mode.  http://digital.NI.com/public.nsf/allkb/D1629D863F0442CC86256A0200558A15

  That url describes a workaround solution is to first create a file in Excel, save and then writing adds to it.  This is something that users of my compiled application will simply not do.

  Writing File.vi measure generates tab limited text files but only takes some input signals.

  I would take my array of strings and simply write that in a limited file tab.  Is there really no way to go in LabVIEW without spending $500 one another?

  
  

• Writing a single line of numbers in a text file or write several lines each iteration?

  Hello

  I am currently working on an application that has a few different time-loops at the same time. A single loop acquires data (DAQloop), another shows the data (raw and processed data) on graphs (Graphsloop) and another stores data in an open (Storageloop) ascii text file.

  The data is passed to the DAQloop to the Storageloop through a queue. Now, I leave the Storageloop take the first element of the queue (oldest) to store in the text file each iteration. However, I was wondering if it would be better to let the Storageloop take all items currently available in the queue store at once.

  Does anyone have ideas on this? Who better its? The text file is already open and is simply passed as a refnum.

  THX!

  With normal file primitives LabVIEW, you will get your best speed of disc when you write about 65 000 bytes of disk at once (or read, incidentally).  When I write a similar code, I included a string buffer in the loop of Scripture.  Whenever I get data to write, I add it to the chain.  When the chain hits 65 000 bytes, I write to disk.  You could break this into three loops, as well - a read buffer, and write.  Depending on the current size of piece, you could see a change in the order of magnitude of the speed of disk write.  This write operation is often limited by the conversion from binary to ASCII, not the disk i/o.  If you do this, be careful with your buffer.  You can get some serious slowdowns depending on how you implement it.  This post has some details and examples.

• Create an array of Boolean 1 d of reference Boolean table 1 d

  Hello

  Any suggestions on how to create an array of Boolean 1 d of reference Boolean table 1 d?

  Thank you for any ideas?

  You can wire the reference to a node value property and get the array of Boolean.

• Create table 2d by pulling larger 2d table columns, as indivated by an array of Boolean

  Hello

  I have a 2d chart with 16 columns that contain data from different input channels.  I also have a 1 d array of Boolean (length 16) corresponding to these columns.  In the table of Boolean 1 d, if a value is true, I want this column in table 2d to stay.  If the value in the table of Boolean 1 d is wrong, I want to delete the corresponding column.

  Thus, for example, if the table of Boolean 1 d looks like this:

  [T T T T F F T T T F T T F F T F]

  the new 2d array would be 10 columns, which correspond to the columns of the old 16-column of table 1, 2, 3, 4, 7, 8, 9, 11, 12 and 15.

  I am very new to labview (programming just started yesterday). Can someone help a newbie to do something that is probably simple? In my view, that there will be an iteration back through the deletion of rows and 16 columns table columns as they come if the value of the Boolean vector is false, or iterate forward through the 16 columns and add columns to a table if the value of the Boolean vector is true... but I don't know how to do this.

  Thank you

  Matt

  If you have 2012 you could just do this:

  

  -Ryan S.

• How to manage data in an array of Boolean

  Hello

  I have Boolean values inside the table 1 d

  and I have a numerc control and a text file so that the entry
  number will be compared to the number in the text file
  If the numbers match, the Boolean value of this number goes on
  The issue is that when I enter another number of the first
  Boolean turns off how can I keep the first
  Boolean on...

  It is shown in attachments I walked 5, then the fourth boolean is turned on
  but when I entered the second number '6', the last boolean is turned on
  and the first boolean who was IT turns OFF
  I wana keep the two of them, HOW?

  
  

• How to select cases or an event using an array of Boolean 2D.

  Hello world

  I'm trying to use an array of Boolean 2D to select different events or case. For example, if the variable Boolean 1 and 2 are TRUE, case 1 will be selected. If the Boolean variable 1 is FALSE and 2 is true, case 2 will be selected and so on. I tried to use the Boolean to the number, but I need a way to differentiate between B1 = B2 = FALSE and B1 = B2 = TRUE, FALSE, TRUE. In other words, no two Boolean combinations can lead to the same case, seminar.

  ~ Mario

  You need to remodel your table 2D to 1 d first.

  Now, assuming that you have the items in table 64 less thant, "boolean array to the number" will give you a unique number for each possible combination of bit.

  M_Mario_M wrote:

  I tried to use the Boolean to the number, but I need a way to differentiate between B1 = B2 = FALSE and B1 = B2 = TRUE, FALSE, TRUE.

  As mentioned, each combination will give you a different value. You must simply ensure that you Add unique cases for each number. Add as many cases you want to structure your business. If you do not, several models of trigger default case-sensitive.

  If your problems persist, please contact your code.

• How to save the text file input array

  Hello, I am very new to LabVIEW, so apologies if I use the wrong terminology.

  I did a VI which reads 25 text files from a 3D array.  When I click on run I need to select the files 25 text.  Is there a way I can save the data imported for later calculations without having to select the files each time?

  Here's what I have:

  

  Dan_Owen101 wrote:

  Thanks for that.  But the user will not have access to these files during execution of the VI.  There are many other paintings that I'll need to save and index for other variables as well, so just for that would use the method of you would be useful to know.  All I really need is a way to save these relatively few values in a table.

  So do you intend to have these values hard-coded into your executable?  This seems dangerous and likely to have you to make updates much.  Believe me when I say you want to have the sitting files with the executable.

  But if you're insistent on this, I would use a global variable.  Have a VI just read all files and build the table for you and write in the global variable.  Then you can right-click on the control on the Panel before global variable 'Create default value'.  Save the variable and build your executable file.

• Through the sum of the values in all of the array of Boolean one and zeros

  Hello.

  I have an array of Boolean which I have converted one and zeros. I just want to the sum of all the elements in this table (in other words, giving the number of 1 in the table). I used the feature to add items, but I get a negative value. I checked there were not all values except one and zero (I know it shouldn't be) using max and min. I don't know how a negative value has been calculated - any ideas.

  Thanks in advance

  Before adding elements, convert the table I32 or I64. The output of the primitive add-on is of the same type that the entry and if the entry is an I16, then you cannot have a value greater than 32,767 or value will wrap around (what happened in your case.

• Can I link an LED on front panel for a specific element in an array of Booleans?

  In LabVIEW 2010, I have a string of LED. I and array of boolean values that contain the values that the LEDs have to indicate.

  What is the best way to connect the LEDs to elements in the array of Booleans?

  Can I link an LED on front panel for a specific element in an array of Booleans?

  How this is done?

  Can someone show the code example?

  
  

• ASC file in 2D array of Boolean

  Hey guys,.

  I was wondering if there is a method to download a *. CSA or *. DAT file to convert it to an array of Boolean 2D.

  For example, I would create a .asc or .dat file composed of strings using MATLAB to generate

  1 1 0 1 1 0 1 1

  0 1 0 0 1 0 0 1

  1 0 0 1 0 0 1 0

  and it would be to convert the string to an array of Boolean 2D of

  T T F T T F T T

  F T F F T F F T

  T F F T F F T F

  while I can ultimately use it to create a digital waveform graph changed like this:

  

  The goal is because I use the sampling frequencies of 0.1 second interval that spans 2-5 minutes.

  So to summarize:

  1. download a *. CSA or *. DAT file with a 2-D array of strings

  2 convert the file to create a Boolean matrix 2D to use create digital waveforms

  Any help will be appreciated. I know it's not much but I downloaded the table 2D to waveform *.VI for testing purposes.

  sdkpark wrote:

  However, when I tried first, he doesn't know how to separate each column in the *.asc file

  1 0 0 1 0 0

  0 1 1 0 1 1

  It turns out only to read the first column

  Please attach your VI instead of an empty image of sense.

  Reading spreadsheet file will read all the data if used 2D correctly. The defined delimiter is separating the elements and line break between the lines. For example, if you do not wire the delimiter, it will assume "tab" and that a single value is read by line if it's actually a space character. Try a delimiter of the 'space '.

• Use an array of Boolean to jump to sections of code (extensible design).

  I currently have four pieces of code (which could turn into 5, 6 or more pieces in the coming months), I want to run or jump selectively according to an array of Boolean.  I have a cluster typedef of numbers, which are each refers to a port VISA number connected to a particular instrument.  This will be expanded in the future as the software is necessary to control the instruments more.  There is an array of Boolean (coming from the vi) attached which has a value of TRUE for each instrument that was detected (and therefore is connected).  In the case below, I want to initialize each instrument that is connected, but not try to do something for those who are not.

  The cluster and the Boolean chart is shown below:

  

  As someone who will need to expand in the future on this section of code, I want to write it in a way that will be infinitely extensible, without taking more space BD.  At the moment I find myself unable to do since I do not know how to pair the table of Boolean with the elements of the bunch, such that I can run or ignore the code accordingly.

  Help, please!

  -James

  Since you mention that you want to expand, I'd be more inclined to set a dashboard containing the port number, the type of instrument and the status of the instrument. When you search for your instruments you want to iterate over the array. You can use an ini file to determine which instruments must be present in the system. Others may be optional, and their associated actions could be ignored if necessary. However, the main point I'm trying to do is to combine your status with your instrument information table. This way, you eliminate the possibility of a mistake trying to keep and table and a synchronized cluster. A table makes it also much easier add or remove instruments from your system.

  A few other notes, if you check in a stop condition then stop. Don't simply continue the execution of each iteration of the loop with a business structure that will jump execution if the stop consifition is encountered. Simply stop. Imagine if you had 1000 items in your instrument cluster/table. Using your method always run you your loop 1000 times, even if the shutdown occurred during the first iteration. Eliminate duplication of code and logic twisted to combat it. You have two places incentive th euser, if they want to start or stop. You must have a place to make this code. Much easier to understand and maintain. Don't expand your code easily either because the hard-coded error strings. Your case statement will become very large if you generate your static error strings. Use a loop and a format common you build your missing channel of the instrument. If you use the table on the groups of instruments, I suggested that you will be able to format the string using the type of instrument. I'd be much more inclined to use a single notification utility that will be supported as well cancel and stop messages. It changes a lot better when you have additional message types rather than use a notification for each type of message.

• Is it possible to an array of Boolean function number in a case without the table of Boolean structure?

  Hi guys! In my program, my "robot" (lego mindstorms EV3) has essentially read a code bar and do different things according to the codes bar, he reads and so I have an array of Boolean, and basically I need compare to the other Boolean tables. First of all, I used the "Boolean chart at number" function and then just put it in a structure of the case, but it turns out that the Boolean value to number function is not compatible with my Lego EV3 brick, so I have to find another way to do this. Any ideas?

  Help is appreciated! If you have any questions or if my question is confusing, just ask!

  Thank you.

  
  

• Doubling of the size of the array of Boolean 2D

  Hello.

  I have an array of Boolean 2D 20 x 20 and you need to convert that into a Boolean 2D table 40 x 40. If the first element of the array 20 x 20 is a 1, the first two elements of the first and the second line of the table 40 x 40 must be a 1 as well.

  Thanks in advance!

  Or similar to the other thread:

  I made it smaller, but the code remains the same...

  

• How to assign array of Boolean values in LabVIEW?

  I want to assign array of Boolean values. IAM not able to do. For each Boolean I want to assign each value. Please help me...

  Thank you Mr President... He worked.but I'm stuck with the other problem.i created a 4-page tab control. How is it possible to change the 1 tab to Page 2 and page 3 page, etc. by using a Boolean control?