Write-read binary file Error 116
Hi all,
I am saving double, numeric array data into a binary file and then trying to read it back but keep on getting Error 116 (cannot read from binary file).
I have attached screenshots of the way I am writing my data into the binary file and then the way I am trying to read it. Basically my data is chunks of 2D double arrays, coming at a rate of 1hz and this is why I have to use the get and set file size functions prior to saving into the file (i.e. so that each time I can append my file with new data).
I have tried all combinations for the write to binary and read to binary file functions, thus meaning I have tried little, big and native endian options but I keep getting the same error. Also played with the way I append my data, i.e. I have used both the "offset in bytes" and "end of file" options, just in case this made any difference, but again no luck.
Any help would be much much appreciated.
Regards,
Harry
Solved!
Go to Solution.
Attachments:
Write_Bin.JPG 154 KB
Read_Bin.JPG 100 KB
Just as an amendment to my original post, I can succesfully read my data in MATLAB using the standard fread function with double precision. I presume that this means that there is nothing wrong with the way I write the data into the file. However, it would be useful for me to be able to read it directly from Labview without having to build matlab executables etc etc...
cheers again
Similar Messages
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Bug in LV8 : 'Save for previous version' and 'Write to Binary File' VI
Hello
I am using LabVIEW 8's revamped 'Write to Binary File' VI with a 'TRUE' boolean constant wired to the optional 'prepend array or string size?' to write non-trivial structures to a binary file. I then read the file with the 'Read from Binary File' VI and everything is fine. I don't wire anything to the 'file (use dialog)' input (don't know if this can help).
However, after saving my VI for LabVIEW 7.1, I cannot read the binary files created with the LV7 version of the VI anymore. After examining the LV7 converted version of the VI, there is a 'FALSE' boolean constant that is wired to the equivalent of the 'prepend array or string size' input, which breaks the binary format that is expected.
The attached files are LV8 and 'saved for LV7' versions of a dummy VI that writes an array of 5 integers into a binary file. To test the bug, start LV8, open the LV8 version, run it and create a 'test-lv8.bin' file, then open the LV7 version, run it and create a 'test-lv7.bin' file. Check the content of the two files : the size of the array is indeed missing from the 'test-lv7.bin' file, which can be assimilated as a bug in my opinion.
I think I found another one too : if in LV8 I wire the 'cancelled' boolean output of the 'Open/Create/Replace file' to the selector of a case structure, the 'converted to LV7' version VI will have an error, saying the Case Structure selector is not wired.
Could someone please confirm these are indeed bugs ?
Thanks in advance and have a nice day.
Eric Batut
Attachments:
Test Binary File v7-v8 LV7.vi 15 KB
Test Binary File v7-v8 LV8.vi 7 KBI'm using LV8.6 and need to read a .bin file created in MATLAB. This file obviously does not contain the 4 byte header that LabVIEW prepends .bin files with. So when I use Read from Binary File, I get no data (I'm trying to read an array of doubles). I've tried making my .bin file both in native and big-endian format and changing the representation (double, int64, float64) but none of this works. I noted that if I create the same array in a .bin file in LabVIEW and wire a FALSE to the "prepend array or string size?", my VI for reading .bin files can't read this file either.
Any work-arounds here?
(I'll try attaching my write & read VI's)
Attachments:
ReadWriteBinFile.zip 19 KB -
I have a relatively large 3D array (Phase Settling), which I want to store in a Binary File. The array is a 15000 point sweep (after decimation), repeated up to 48 by 48 times (in two FOR loops, one inside the other), meaning it can end up having as many as 34,560,000 data points. At the moment, I am attempting to dump that 3D array into a Binary File in one go, using the following VI. There are two possile versions of this array (both the same size as each other) and, depending on which has just been tested, they will be written to their own individual file. Once both tests have been run and their results stored, the idea was to open both files, subtract one array from the other, and store the new 3D array to another Binary File whilst also displaying this latest data elsewhere in a higher-level VI.
After its first trial run, LabVIEW presents me with an error message saying something along the lines of "LabVIEW had run out of memory". I assume it would be to do with this VI, since that's where the first error code appeared (Error Code: 2), apparently originating in a 'Write to Binary File' function.
Any ideas as to how I could get round this first hurdle, or perhaps an alternative method I could try?
Thank you.
- James
Message Edited by James Mamakos on 04-08-2010 10:07 AM
Never say "Oops." Always say "Ah, interesting!"
Attachments:
Running out of LabVIEW memory when writing to binary file.PNG 30 KBWell, as shown in the attached screen-shot, the error indicator shows an error code of 2, and that the error occurred in one of the Write to Binary File functions.
However, when trying to save this particular VI after a couple of tweaks, I was presented with the following pop-up alert message:
LabVIEW: Memory is full.
Cannot save VI "Compare Amp - calculate.vi".
LabVIEW Save error code 10: Default data space.
Anyway, returning back to the main problem at hand, I've though of a couple of possible solutions...
We don't really need a particularly high resolution to the data points for the comparison, so I could convert the array doubles into an array of singles to save space.
I should be able to implement the 'Write to Binary File' for the initial arrays into the outer FOR loop, thereby reducing the amount data written in each instance by a factor of up to 48. The only problem I can foresee in this is that I'm not sure how to append 2D arrays into a binary file such that, when the file is read, they would appear as (or be easily converted into) a 3D array.
As for the 'True' case in my case structure, am I being grossly inefficient in my passing of data from one place to the next? I know there are a lot of branches (and buffers?) of 3D arrays; is there a decent way to reduce this overhead by tweaking the data paths or something?
- James
P.S. The computer I'm using has 1GB RAM.
Message Edited by James Mamakos on 04-08-2010 12:39 PM
Never say "Oops." Always say "Ah, interesting!"
Attachments:
LabVIEW - error code 2.PNG 35 KB -
Write to Binary File strips carriage returns (LV 8.2.1)
I was using Write to Binary File to write a combination of strings, numbers, and time stamps. When I later went to read the filel, it didn't quite make sense. Although I had written strings that had lines ending in <CR><LF>, when I read them back in, they only had <LF>. I checked this using other programs to read the file. The <CR>'s have been stripped out! Why would a "binary" file VI kindly edit your strings for you? I needed the strings to be written exactly as they were. The VI corrupted my data.
I couldn't find any explanation for this in the help, nor any way to turn this behavior off. Is this a known issue, a bug, or a feature?
Regards,
Dave T.
David Thomson Original Code Consulting
www.originalcode.com
National Instruments Alliance Program Member
Certified LabVIEW Architect
There are 10 kinds of people: those who understand binary, and those who don't.Thanks, Altenbach and Jarrod, for your help.
Time to eat crow. At Altenbach's prompting, I created a sample program that would demonstrate the problem. It didn't. Turns out the files were fine. I was reading them with the "Read from Text File" vi, with the EOL option enabled! I had used another program to check the data in the file, and was basing my conclusion on that. Unfortunately, I didn't use a good hex editor, and it turns out the program I used was also stripping the <CR> off. So the data in the file was good, I was reading it wrong, and my double-check was reading it wrong.
Cheers,
Dave
David Thomson Original Code Consulting
www.originalcode.com
National Instruments Alliance Program Member
Certified LabVIEW Architect
There are 10 kinds of people: those who understand binary, and those who don't. -
Read binary file in LabVIEW 2012
Hi,
Have anyoune experienced problems reading binary files in 2012 previously saved in 2010.
As shown on attached image, the same VI is opened in 2010 and 2012 reading the same binary file containing the data structure "ProcessList IN".
I suspect it has something to do with the variants ?
The error message does help a lot (-;
Any ideas ?
Kind regards
Kahr
Regards Kahr
Certified LabVIEW Architect
CIM A/S
Attachments:
Read_Binary_File_Error_LV2012.png 426 KBHi Kahr,
"error 1" tells one of the input parameters is wrong: it's either the path or the cluster datatype! The error message only mentions a file path AS AN EXAMPLE!
You're using BinaryRead similar to those old Datalog file functions to read a cluster of several data. It has been know that datalog files get tricky when one is using a different LabVIEW version to read them due to changes of internal data representation. Maybe that's the point that hits you now?
Best regards,
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CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
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How to open and read binary files?
How do I open and read Binary files?
Did you look on The Unarchiver's web site where it has a link to older versions? http://theunarchiver.googlecode.com/files/TheUnarchiver3.2_legacy.zip
The best thing to do is ask your friends what programs they used to produce these files, or at least what format files they are producing. Otherwise it's like being shown a car and given a bundle of 200 keys with no idea to which one to use, or even if any of them work with that car.
Using The Unarchiver will likely not do anything because it too will not know what format files are involved, and they may not even been in an archived format. If they sent you a Word file without telling you (a favorite of Windows users to do -- it drives me crazy when they could have just sent them in plain text), The Unarchiver won't open them. If it's a picture file then using Hexedit will just show you a bunch of unintelligible stuff as shown in an earlier post, though you may see a line of text providing a hint.
As I said earlier, often .bin may be an executable program which needs another program to actually interpret it. That's what Java is trying to do. Still, it may think it can execute the file, but it is highly unlikely somebody would send you an executable program (and if they did I would not trust it). For all you know it may be a Windows virus. -
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Hi Gurus,
We are testing File receiver with NFS protocol and the server is running on UNIX system.
So Which user will write/read these files in the foder.We could not able to write files even though we have given right access.
KumSo Which user will write/read these files in the foder.We could not able to write files even though we have given right
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I have a VI that worked perfectly well in 7.1 and now I've opened it in 8.2 it doesn't work and I can't revert back to 7.1 because I accidently pressed save.
In 7.1 I used the combination of open, read and close file functions to read parts of a large binary data file - I cannot read the whole file into Labview 8.2 as it fills the memory. There isn't a terminal in the 'read binary file' function in 8.2 for 'pos offset' which is what I used to use in 7.1. How am I supposed to open the file now? Surely they have not removed such a useful facility entirely - is there another way to do it that I am not aware of?
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André, at first I could not understand your response, ...
Must be my Dutch way of writing English
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Hi
I need some help in reading binary files. This is the code I have so far.
import java.io.InputStream;
import java.io.FileInputStream;
import java.io.IOException;
public class patternmatch {
public static void main (String[] args) {
final byte[] bytes = new byte[1];
try {
final InputStream instream = new FileInputStream (args[0]);
while (true) {
final int count = instream.read (bytes);
if (count==-1) break;
System.out.println(bytes);
instream.close();
} catch (IOException e) {
System.err.println(e);
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[B@eee36c
[B@eee36c
[B@eee36c
[B@eee36c
Which represents some address I think.
Does anyone know how to extract the hexidecimal numbers?
Thanks
Charlesdouble post http://forum.java.sun.com/thread.jsp?forum=31&thread=558802
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Did you reinstall CS3 after CC?
For that matter, doing an in-place upgrade on the OS is always a gamble with Adobe programs. Reinstalling all the versions you need, in order, would probably solve your problem.
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I want to read binary file in a specific format. There is a number at the starting of the file. That tells us where the data is starting. Suppose it says 3975, then it mean data starts at 3975. Then once I read that location I want to read data at 10bytes at a time and then convert it to numeric and display it on graph. I am attaching the file format and the current vi which I am using. please help.
Solved!
Go to Solution.
Attachments:
topo.zip 89 KBAh, the first 10 characters are a string!
After opening the file, use the Read From Text File with count set to 10. Then use the Decimal String to Number to convert this string into your "record size".
NOTE: The text indicator was just for debug purposes. You don't really need it.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines
Attachments:
Read record size.png 12 KB -
How to read/write a binary file from/to a table with BLOB column
I have create a table with a column of data type BLOB.
I can read/write an IMAGE file from/to the column of the table using:
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How can I do the same for other binary files, e.g. aaaa.zip?There is a package procedure dbms_lob.readblobfromfile to read BLOB's from file.
http://download-east.oracle.com/docs/cd/B19306_01/appdev.102/b14258/d_lob.htm#sthref3583
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http://asktom.oracle.com/pls/ask/f?p=4950:8:1559124855641433424::NO::F4950_P8_DISPLAYID,F4950_P8_CRITERIA:6379798216275 -
Attached is a program I wrote that reads vibration signals, displays their respective graphs, and then writes that graph to a datalog file. However, every now and then I get the Error 116 message, and cannot figure out why. The best way to replicate the problem is to run the program, enter some text in the boxes, and save that file. Then repeat the process so you have 2 datalog files to read. Then open the "Data Reader" VI and open data file #1. Close the entire program, and open data file #2. Repeat this process until the Error 116 appears. Any suggestions? Even when the error occurs, the information is still displayed, but I need to get the bug fixed.
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FFT Analyzer.vi 542 KB
Data Reader.vi 64 KBJeff, in this post, someone was experiencing the same error message and it was resolved after upgrading to LV 8.0.1. Could you see if installing that patch and mass compiling resolves anything?
Doug M
Applications Engineer
National Instruments
For those unfamiliar with NBC's The Office, my icon is NOT a picture of me -
Hello,
I'm trying to read a binary file from a card.
This is something I can easily do, at least until now :)
I'm testing a new card (with protocol T=1 instead of the T=0 I used so far) and I don't have the card technical document (with the APDUs format) but I guess the APDUs are the same (for the read binary command and other more general commands like the select and others alike).
I can select the pretended files and navigate in the card EFs/DFs, but for some reason I cant read a complete binary file (it stops before the last block reading).
This is the code I have used so far without problems:
private static byte[] readBinary() throws CardException, IOException {
//CardChannel channel = getCardChannel();
ByteArrayOutputStream os = new ByteArrayOutputStream(256);
boolean finished = false;
byte offset = (byte) 0x00;
int i=1;
while (!finished) {
//Read binary command
ResponseAPDU resp = channel.transmit(new CommandAPDU(0x00, 0xB0, offset,
0x00, READ_BUFFER_LENGTH));
i++;
byte[] data = resp.getData();
offset = (byte) (offset + (byte) 0x01);
os.write(data);
if (data.length < READ_BUFFER_LENGTH) {
finished = true;
return os.toByteArray();
}Where READ_BUFFER_LENGTH = 256
If with the other cards I tested this code works fine why doesn't it work with this card? The only difference is at the transport protocol, this card protocol is T=1 and the other cards was T=0, but I thought that PC/SC would hide the transport protocol layer
Thanks for any help
Brian
Edited by: Brian.Rep on Dec 26, 2008 3:16 AMBrian.Rep wrote:
Hello,
I'm trying to read a binary file from a card.If it is a Java Card, it would help to see source code of the applet.
This is something I can easily do, at least until now :)
I'm testing a new card (with protocol T=1 instead of the T=0 I used so far) and I don't have the card technical document (with the APDUs format) but I guess the APDUs are the same (for the read binary command and other more general commands like the select and others alike).
I can select the pretended files and navigate in the card EFs/DFs, but for some reason I cant read a complete binary file (it stops before the last block reading).
This is the code I have used so far without problems:
Where READ_BUFFER_LENGTH = 256
If with the other cards I tested this code works fine why doesn't it work with this card? The only difference is at the transport protocol, this card protocol is T=1 and the other cards was T=0, but I thought that PC/SC would hide the transport protocol layerThis is not quite true. Java Card tries to hide the underlying protocol used, but it is not quite possible with T=0. You need to know what APDU case you're expecting for CLA/INS in order to pick up the data field or send outgoing data.
What error do you get? -
Read binary file information from servlet - from database accessor method
Okay, I have been working on this for awhile now and I just plain dont know what I am doing. Could someone please help me? I cannot find any examples through google or the forums for this specific type of situation( as in a servlet calls a method which gets binary file from a database).
- How do I get the inputStream into the servlet so that I can read it?
- Why am I getting the error message that OutputStream has already been called?
If someone could give me direction or simply tell me what I should look up - I would really really appreciate it.
The Servlet
response.setContentType("application/msword");
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OOT openAttachments = searchInfo.openAttachments(newID, oot, ootNum, file, ext, os);
InputStream is2 = oot.getIs();
byte b[] = new byte[16384];
int numBytes;
while((numBytes=is2.read(b))!=-1){
os.write(b,0,numBytes);
System.out.println("is - in while" + is);
is2.close();
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/ootMain.jsp?newID="+newID);
dispatcher.forward(request, response);
os.flush();
os.close();
The Method
public OOT openAttachments(String newID, OOT oot, String ootNum, String file,
String ext, OutputStream os) {
this.conn = database.SybaseDAO.grabConnection();
String query = " edited for space'";
state = conn.createStatement();
rs = state.executeQuery(query);
if(rs.next()){
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oot.setIs(is);
System.out.println("is - in while" + is);
is.close();
Error Messages
(is - in while - method) sun.jdbc.odbc.JdbcOdbcInputStream@c02a
(is2 - after - servlet) sun.jdbc.odbc.JdbcOdbcInputStream@c02a
IOException: java.io.IOException: InputStream is no longer valid - the Statement
has been closed, or the cursor has been moved
Mar 14, 2005 9:53:19 AM org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.IllegalStateException: getOutputStream() has already been called for this responseThanks for your help/time -
CrystalHere is the entire exception:
Mar 16, 2005 9:32:44 AM org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.IllegalStateException: getOutputStream() has already been called for this response
at org.apache.catalina.connector.Response.getWriter(Response.java:596)
at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:161)
at javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:111)
at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:122)
at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:115)
at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:182)
at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:115)
at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:75)
at org.apache.jsp.ootMain_jsp._jspService(org.apache.jsp.ootMain_jsp:596)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:325)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:302)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:246)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:682)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:581)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:501)
at oot.display_files.doGet(display_files.java:63)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:106)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:576)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
Mar 16, 2005 9:32:44 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet display_files threw exception
java.lang.IllegalStateException: getOutputStream() has already been called for this response
at org.apache.catalina.connector.Response.getWriter(Response.java:596)
at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:161)
at javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:111)
at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:122)
at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:115)
at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:182)
at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:115)
at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:75)
at org.apache.jsp.ootMain_jsp._jspService(org.apache.jsp.ootMain_jsp:596)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:325)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:302)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:246)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:682)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:581)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:501)
at oot.display_files.doGet(display_files.java:63)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:106)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:576)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)Line 63 is the include...
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How to install standalone Oracle BPEL 10.1.3.4?
Hi I want to install standalone Oracle BPEL 10.1.3.4 (NOT SOA SUITE). Can someone give the URL for the documentation. Or can someone say the patches that need to be installed?