Experimental Physics and
Industrial Control System

[email protected] (Deb Kerstiens) · Fri, 13 Sep 96 14:43:30 MDT

This message is pertinent only to those of you using edd/dm 2.0 or later.

David wrote:
> 
> I'm trying to use dm colour rules to change the colour of a text monitor
> according to the value of a database field of type double. For values of
> 0.0 or greater this works fine but I can't get it to work with negative
> values; it behaves as if the expression is always false.
> 
> The rule in the edd report looks like:
> 
>                 name="test"
>                 info[0] {
>                         chan="$(C)"
>                         value="-1.0"
>                         connector="use"
>                         comparator="less than"
>                         clr="1"
>                         RISCpad="0"
>                 }
> 
> Should this work ? If not, is there any other way of doing what I want ?
> 

Yes, it should work.  Unfortunately, as David reported, it doesn't! 
To fix it, look in rti/dynamic_graphics.c and apply the following change:

int evalColoRule( valStr, pComel, comparator)
	.
	.
	.
        if(isdigit(*valStr)){

********
change the last line to be 
        if(isdigit(*valStr) || *valStr == '-'){
********

This is a quick fix, but I've tested it and it works.  I'll try to rework
the color rule comparisons soon and will come up with something better.
Thanks, David.  I'm not surprised there was a bug, but I'm surprised it
took so long for someone to notice :) !

Deb

**********************************************************************
Deb Kerstiens		[email protected]
Phone			(505)667-3396
LANL AOT-8,MSH820	PO Box 1663, Los Alamos, NM. 87545 
**********************************************************************

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System