On Thu, 27 May 2010, Colin Aspin wrote:
>
> When I change the ratio to $error_semi_min_axis / $error_semi_maj_axis
> I get an error box cropping up(see attached). Any suggestions? If I
> change back to use $ratio_100um the ellipses plot OK.
Hi Colin,
I'd guess that "error_semi_maj_axis" must be set to zero somewhere (divide
by zero gives a not a number representation, the "nan" that you see). If
you try adding a "Condition:" just saying:
$error_semi_maj_axis != 0
that might exclude this, otherwise you'll need to believe your 100um
ration option.
Cheers,
Peter.
On May 27, 2010, at 6:55 PM, Peter W. Draper wrote:
> On Thu, 27 May 2010, Colin Aspin wrote:
>
>> Thanks a lot Peter. I think I figured it out now. Attached is a
>> screen
>> grab of my test.
>
> Good, but maybe $error_semi_min_axis/$error_semi_maj_axis might be a
> better axis ratio, but I leave the interpretation of columns to you!
>
> Cheers,
>
> Peter.
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