How to read bits from the file?

[tranonim]

Hello everybody,

I'm beginner in LabVIEW. I need to get bits from the file, but I don't know how I can do it. I use the example "Read Binary File VI" from LabVIEW Help, but it returns DBL array. And for a long time I can't find a solution to convert this array to array of bits.   Can somebody help me? Thanks in advance. 

[altenbach · Accepted solution]

This is a very vague question. A file is nothing more than a long string of bits, so you could simply read it as a string and parse out the bits the way you want them. I don't know how you want them 🙂

One possibility would be to cast to an array of U8, then use "number to boolean array" in an autoindexing FOR loop, followed by reshaping to a 1D boolean array. You could also format the U8 as %08b and concatenate the strings. There is no "official" way to represent "bits" to the human observer. 😉

[crossrulz]

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@tranonim wrote:

Hello everybody,

I'm beginner in LabVIEW. I need to get bits from the file, but I don't know how I can do it. I use the example "Read Binary File VI" from LabVIEW Help, but it returns DBL array. And for a long time I can't find a solution to convert this array to array of bits.   Can somebody help me? Thanks in advance. 

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You can pass in the type into the Read Binary File VI to get the data in whatever form you want.  Just remember that a boolean is really 8 bits.

[tranonim]

Thanks guys! Special for altenbach. I've done what I wanted using your instructions!