Null Characters in Flatten to String

Hi all,
I am using the Flatten to String Function to convert a numerical array to a flattened data string in hexadecimal. When I do this, it adds 6 null characters (zeros) before every array element. How can I flatten my array without the addition of these null characters?
Thanks,
Jasmine
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Now that I'm looking at your code, that can be simplified A LOT.
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Attachments:
Flatten to String.png ‏25 KB

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How to detect Null characters in a binary string

In my application, I'm sending around true binary data in strings and flattened data structures and sometimes I get null characters in the string. I was wonder if there is a way to dectect NULL characters in a string. Thanks for your help.
Josh
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E=McHammered wrote:
In my application, I'm sending around true binary data in strings and flattened data structures and sometimes I get null characters in the string. I was wonder if there is a way to dectect NULL characters in a string. Thanks for your help.
Josh
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Flatten to string for sending through TCP/IP contains CRLF characters

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mkdieric wrote:
Hi,
thanks for the feedback. I'll use the way you describe, by first sending the number of characters to expect.
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IDOC Data record is appending with NULL characters instead of spaces.

Hi Gurus,
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NULL CHARACTERS

HI FRENS,
kindly tell me how to remove null characters from a string
thanks in advance

Hi,
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Match pattern and null characters

Hi,
I'm using LabView 2010 and want to write a VI that imports a spreadsheet file (txt) into an array, and then goes through the rows and looks for expressions.
Problem:
The "read from spreadsheet file" vi generates unnecessary spaces and empty rows and the data apparently contains null characters, so that the "match regular expression" vi returns only errors.
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Thank you.
Original text file:
Text file imported into an array (note the spaces and empty rows):
vi:
Solved!
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This file is not an ASCII text file but really an UTF16 file. As such the ASCII String to Spreadsheet file obviously has to run into problems trying to interpret it. A quick and dirty approach would be to read in the file as string first, remove the first two UTF16 file indication bytes and then remove every second character. If the file does only contain 7Bit ASCII characters you are all done and can feed the resulting string to Spreadsheet String to Array, otherwise you will get some strange characters at the positions that contain non 7Bit ASCII characters.
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How to find number of characters in a character string

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hi,
Use STRLEN for Calculating String Length..
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Data type of preprend array size in Flatten To String block

Hi
The data type of the preprend array size in Flatten To String block is given as I32. Is it somehow possible to reduce the data type to I8, since the width and height of my array won't exceed 255 ?. I also need to do the same in Unflatten To String as well.
Best regards
Oesen

Oesen wrote:
Hi
The data type of the preprend array size in Flatten To String block is given as I32. Is it somehow possible to reduce the data type to I8, since the width and height of my array won't exceed 255 ?. I also need to do the same in Unflatten To String as well.
The short answer is no. This is because the index is an I32. NI likes to keep integers as an I32 whenever possible for reasons like this.
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Getting null value while parsing "XML String" with encoding WINDOWS-1252.

Hi,
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Thagelapally wrote:
I am coverting the below "XML string" to Document, once it is converted I am reading that Document,which have an "attribue" Element in.
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I am requiring a suggestion on how to identify the same characters in 2 different Strings, for example:
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I would instead sort the characters, and then compare
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Null characters in the source file

Hi frnds,
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Regards,
Shiva.

HI,
On source side make all those fields as optional i.e. occurance will be 0..1 or 0...Unbounded.
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Actually the node is unable to generate due to Null value so that might be the problem
Thanks
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JMS Null Characters being added to payload

Hi.
I have an application which produces jms messages to a queue.
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Regards,
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Edited by: Andrew Morton on May 15, 2008 12:14 PM

This is to do with the jms framework.
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NXT Flatten to String Not Working with Clusters and Arrays

Hello,
My name is Joshua and I am from the FIRST Tech Challenge Team 4318, Green Machine. We are trying to write a program that will write to a configuration file and read it back. The idea is that we will be able to write to a config file from our computer that will be read by our autonomous program when it runs. This will define what the autonomous program does.
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No error is thrown from what we can tell. All you get is a blank data structure out of the unflatten VI.
The program attached is a test program I've been working on to get this functionality to work. It will display the hex content of what is going into the file, coming out of the file, and then the resulting data from the unflatten string, as well as any errors that have been thrown. The data type we are using simulates what we would like to store. There is also a file length in and out counter. The out file is a little larger because the NXT write file VI adds a new line character on to the end (thus the use of the strip white space VI). This character was corrupting even basic data types saved to file.
I would like to know if there is a problem with what we are doing, or if it is simply not possible to flatten arrays on the NXT. Please ask if you have any questions about the code. Thank you in advanced!
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Attachments:
ReadableTest.vi ‏20 KB

Hi jfireball,
This is a very interesting situation. Take a look at what kbbersch said. I also urge you to post in the FTC Forums. You posted your question to the general LabVIEW forums, but by posting to the FTC Forums, you will have access to others that are using the NXT hardware.
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How to find no of numeric characters in a given string ???

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My Tcp/ip multi-client server is not passing the data string into the flatten to string vi

I am using labview Multi-connection cleint and server to build my own multi-client server connection.
The problem i am having is that the data does not get through the flatten to string vi. Would anyone be kind enough to tell me why is that happening? and what I do to fix it.
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Attachments:
multiconnection-server.vi ‏39 KB
multiconnection-client.vi ‏21 KB

Instead, I decided to upload the code and recent mods I have made to it .
see attached
Attachments:
multiconnection-clienttest.vi ‏43 KB
multiconnection-servertest.vi ‏21 KB

Null Characters in Flatten to String

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