Remove "zeros" form a txt file created by Labview

[Kabanga]

Hi all,

I got problems with a saved txt file and I hope somebody will me here.

I'm doing measurements and saving data in a txt file.

The data look as follow:  0.000000

                                        1.258766

                                        2.479566

                                        ............... 

My question is: how do I programatically  save these data without  "0.000000" so that the saved txt file looks like that: 1.258766

                                                                                                                                                                                            2.479566

Thank you for your help

Best regards

Kabanga

[GerdW]

Hi Kabanga,

well, usually this is a very nice tutorial question
One solution could be:

It's not very efficient, but works: In a first step the array is checked for zeros. In the FOR loop all those zeros are deleted, starting from the end of the array...


Message Edited by GerdW on 07-09-2008 11:57 AM

[muks]

Check this http://forums.ni.com/ni/board/message?board.id=170&message.id=332775#M332775

[GerdW]

Hi Kabanga,

you can trust muks as he now has a lot of experience on deleting items from arrays

@muks:
Making the link as a real (clickable) link adds a lot of usability


Message Edited by GerdW on 07-09-2008 12:09 PM

[Kabanga]

Hi guys,

thanks a lot !

I'm gonna try it and will let you know the outcome.

Best regards
Kabanga

[muks]

---

you can trust muks as he now has a lot of experience on deleting items from arrays

---

Right gerd.Thanx to you guys.

[muks]

---

@muks:
Making the link as a real (clickable) link adds a lot of usability

---

yup will do so from my next post.

[Kabanga]

Hi Gerd,

I used your solution and it's working perfectly.

I don't see the "non efficiency" you were talking about. Could you give me more details on that point?

Thanks to you all guys your answers

Best regards
Kabanga

[GerdW]

Hi Kabanga,

the non-efficiency comes into play when 1) working on big arrays and/or 2) deleting lots of zeros in the array.

1) You create a new boolean array with the comparison function. This creates a new buffer, which may lead to problems when memory is full...
2) When deleting array elements LabView has to create a new copy of the array. Same problem as in point 1, but here even more problematic as this occurs in a loop: worst case is to allocate a new buffer and copy array items with each iteration...

[Kabanga]

Hi Gerd,

I see now.....but I have  about 60 to 80 points to measure. 

So I think it will work perfectly.

Bets regars
Kabanga