conversion table string to double

[ema_1987]

Hi,

I try to convert the string from array to DBL but I can not find the function

Can someone help me. you find attached my program

thank's,

[camerond]

Decimal string to number.

But, if those commas are actually separating the integers and decomals, you might have to change them to periods first (exercise left to the OP).

Cameron

[samli · Accepted solution]

Use "Fact/Exp String To Number". http://zone.ni.com/reference/en-XX/help/371361H-01/glang/fract_exp_string_to_number/

[camerond]

Whoops, you're right. I went through it quickly and didn't notice that Decimal string to number resulted in integers. My bad .

Cameron

[billko]

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@camerond wrote:

Whoops, you're right. I went through it quickly and didn't notice that Decimal string to number resulted in integers. My bad .

Cameron

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I'd have to include this in the top ten list of most common misunderstandings in LabVIEW.  Most people think of "decimal" as "a number with a decimal point," but LabVIEW (at least in this case) defines it as a "base 10 number."  You know what?  BOTH are correct.  Unfortunately, that leads to mass confusion, as most people expect this function to elicit a number with a decimal point if needed.

So don't feel bad.  😉

[ema_1987]

Thank's you save my life

[Yamaeda]

 

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I'd have to include this in the top ten list of most common misunderstandings in LabVIEW.  Most people think of "decimal" as "a number with a decimal point," but LabVIEW (at least in this case) defines it as a "base 10 number."  You know what?  BOTH are correct.  Unfortunately, that leads to mass confusion, as most people expect this function to elicit a number with a decimal point if needed.

So don't feel bad.  😉

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It should really be called "String to Integer", as it's not a base 10 number, but a base 2 number, if you want to get technical. 🙂

I guess it's to cater to the "non programmers" by calling it "to decimal". Integer is however a basic part of math (http://en.wikipedia.org/wiki/Number#Integers) and i assume all who use LV has a basic knowledge of that. 🙂

By the same logic "String to fract/exp" should be renamed "String to real".

/Y

[JÞB]

"String to Float" would be my attempt at renaming that function Y  But older versions of LabVIEW were not 100% IEEE 754 compliant.   I will not speculate on future versions although, changing a core data type would be unusual.  So, I assume the primitive was named "String to fract/exp" to avoid confusion. (That didn't work perfectly, did it)

[Yamaeda]

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@JÞB wrote:

"String to Float" would be my attempt at renaming that function Y

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I was about to suggest that also, but noticed that they used the terms Integer and Real on the wiki link. Personally i prefer float. 🙂

/Y

[JÞB]

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@Yamaeda wrote:

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@JÞB wrote:

"String to Float" would be my attempt at renaming that function Y

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I was about to suggest that also, but noticed that they used the terms Integer and Real on the wiki link. Personally i prefer float. 🙂

/Y

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"Real numbers" is a mathematical concept.  Floating point representation is a computational standard.  A huge difference! computers don't work with Real numbers.  (Well not this one-  there are analog computors but they don't work with any OS LabVIEW supports)