String to Number conversion

[Jick]

Hello all,

I need to convert string like "-73.28" to number -73.28. With Decimal String To Number Vi I get only -73,00 output with "-73.28" string input. What I do wrong? How to get needed output? Notice also that , needs to be . in the output number!

Thanks!

[Norbert_B]

Decimal String To Number returns, as easily seen by the color of the wire, integer numbers. You are therefore using the wrong function.

You are looking for "Fract/Exp String To Number".

hope this helps,

Norbert

[SK@NIG]

Hi,

in most cases, it´s a "decimal point character".

When you´r working on a machine which is set for example to german language, the decimal point is an "," on english systems, it´s most of the times the "."

You have to set the decimal character to search for in the "Scan from string" function like in this example:

Stefan

Message Edited by SK@NIG on 04-23-2010 08:30 AM

[herrlin]

Dont use the Decimal String to Number VI.  Use the Fract/Exp String to Number VI.

[JB]

See here and post back if you need further help. The example is too old to be opened with recent LV versions.

[Jick]

Hi,

And thanks for your help but he "comma problem" is still there as you can see from the picture. Because the input has a dot (.) as a separator, the output needs it too. Now output has a comma (,). Is there some kind of a setting in Labview I need to check?

Regards,

Jick

[Jick]

Hi again,

I just noticed that I can't enter dots(.) to a numeric control. Only commas (,). So there must be a setting to check somewhere...?

Jick

[GerdW · Accepted solution]

Hi Jick,

first of all: having the "," decimal separator in a numeric indicator is just for cosmetic purposes, you still can calculate using this value...

1) You may change the settings of the OS (Win: Regional Settings aka Regionale Einstellungen). I do this for all of my computers as it seems "natural" for me when working with scientific/measurement data

2) You may switch LV to ignore system decimal separator settings - you find that in the options dialog...

But when using properly formatted output functions you don't need to change any setting... 

[Jick]

Hi,

The problem is that I am passing the number to the another program which does not undestand commas as a decimal separator. So I just thought that is there any simply way to convert commas to dots in Labview. I'll try to change options. Thanks!

Jick

[GerdW]

Hi Jick,

how are you passing the number to your other program?

Most of the times it is a matter of proper string formatting. Read the help on format codes, there you find hints on dot/comma conversion too!