data range Labview 8.2?

[andre.buurman@carya]

Is this a bug?

I have a stange thing when settings the data range in Labview 8.2.1. See attached picture.



The value will become 10 when I type 11.
The value will stay 9.9 if I increment from 9.8 up.

In LV 7.1 and LV8.5 this works like I imagined it would.



Message Edited by andre.buurman@carya on 11-06-2007 03:51 PM

[GerdW]

Hi Andre,

maybe this is due to floating point behaviour... The value 0.1 cannot be represented exactly in floating point, this may result in the coercion/incrementing problem...

I tested the same with my LV8.2.1 and I could increment up to 10 (using the increment button of the numerical control or by using "arrow up" key).

[andre.buurman@carya]

Its very strange. Sometimes it seems to work, most of the time not. There seems to be a difference between edit and run mode.

I think I just have to live with it or find some workaround for now.

[Joseph_Loo]

I could be wrong, but you have specified that particuliar control or indicator will only have a value between .1 and 10. You have the coerce turned on so it will force the system to respect those values.

[andre.buurman@carya]

I imagined that the 10 would be the maximum allowable value, so when you enter e.g. 11 in coerces to 10.

[GerdW]

Hi Joseph,

I also had to read this twice:
The problem isn't the coercion to 10.
The problem of Andre is: sometimes/often he cannot increment the value till 10 but stays at 9.9...

@Andre:
A possible workaround is to use integers with range of 1 to 100 and do the scaling to range 0.1-10 by calculation.
Another workaround is to use a slide instead of a simple numeric. You can also set increments and range for the slider and show a digital control...