merge multiple *.dat files to one *.dat file

[macan]

Hallo,

I have multiple *.dat files from measurement. How to merge that's files to be one file?? Because I want one *.dat file can be plot in graph.

Should I create a separate vi? 

Or

Must be using addons toolkit in labview??

Please help me..

Thanks

regard,

angga

[smercurio_fc]

I'm assuming this is a follow-up to your previous post. As noted in there, there is no predefined format for .dat. So, how to merge the files depends on the file format. There is no toolkit to do this. Is it a binary file? Does it have a header? If so, what's in the header? Is it an ASCII file? If so, what's the format? Does it have a header? A trivial solution is to read the first file using Read From Binary File, read the second file using Read From Binary File, concatenate the data (the default output of the Read From Binary File is a string), and write out the new file using Write to Binary File. If you have a binary file then make sure that "Convert EOL" is turned off for the read/write.

[srikrishnaNF]

hi macan,

  Actually to merge the dat files,there is no special toolkit but to write a seperate vi where we can merge the files.If there is any header,you need to take care of the header data too.To merge the files,you  should use the write to dat file,read from dat file, and set file position functions effectively.

T hanks and regards,

srikrishnaNF

[macan]

I have file like this.

I have created .DAT file using Datalog function in labview.

Sorry, I'm not understand about header..

regard,

angga

[srikrishnaNF · Accepted solution]

Hi macan,

  I just attached a screen shot of my block diagram about the file merging.Here already i created some three dat files i.e 1.dat,2.dat and 3.dat and i am

trying to merge all files to 1.dat itself.

Thanks and regards,

srikrishnaNF

[macan]

Thanks a lot srikrishnaNF...

its very help me...

regard,

angga

[smercurio_fc]

---

srikrishnaNF wrote:

Hi macan,

  I just attached a screen shot of my block diagram about the file merging.Here already i created some three dat files i.e 1.dat,2.dat and 3.dat and i am trying to merge all files to 1.dat itself.

---

This will not work for datalog files. Datalog files have a header, so you cannot blindly concatenate the files. Since the OP has datalog files then you have to read the datalog file's records, concatenate them with the next one, and then write out a new datalog file. Something like the attached should work. 

[macan]

Thanks for your correction. 

I tried this  vi. but I got problem. I put my file in path target file. when I run vi, original data file in path target files will lost, and overwrite with data files from folder source. is that right?? 

regard,

angga

[smercurio_fc]

I'm not sure what you mean by "my file". As written the VI will replace the target file - that's what the "replace or create" constant does. I thought that's what you said you wanted - merge separate datalog files into a single file.

[macan]

Sorry, I have solved this problem. no problems again.

Thanks smercurio_fc. 🙂

regard, 

angga