Experimental Physics and
Industrial Control System

"Kasemir, Kay" <[email protected]> · Wed, 01 Dec 2010 16:59:12 -0500

Hi:

On 12/1/10 15:58 , "Maren Purves" <[email protected]> wrote:
>> On 12/1/10 11:58 , "John Dobbins" <[email protected]> wrote:
>>> If I use the Data Browser -> Inspect Samples feature I see that for
>>> small values (e.g. 1e-9) the value is displayed as 0.00
>> I don't know. Maybe somebody has a good idea?
> 
> The idea is/was there as well as the implementation.
> 
> We still use edd/dm at UKIRT and we have one channel
> that currently displays 4.60e-6 (millibar pressure).
> As we know that we always want to display the vacuum
> in exponential notation. It's a 'text update' and it
> has 'format="decimal- exponential notation"' - using
> single quotes here to distinguish from the double quotes
> in the format.
In a "text update" widget in CSS BOY you can of course do the same thing:
Format = Decimal, Exponential, Hex, ...
In that tool, you can even run the values through a 'rule' or Java script to
format it any way you want:

value < 0: -> "Bad negative value"
value between 0... 1: -> Use exponential notation
value > 1: -> Use decimal notation

The original question was related to the Data Browser, think Strip Tool.
Does every place in every tool that displays control system numbers have to
include a preference GUI where you can configure the various ways to format
numbers?

-Kay

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System