[Paraview-developers] Chart symbol size

[Marcus D. Hanwell]

Hi Eric,

On Thu, Mar 18, 2010 at 10:07 AM, Eric E. Monson <emonson at cs.duke.edu>wrote:

> Hey Marcus,
>
> It's really looking good.
>

Glad things are looking better.

>
> One little thing I noticed is that when you're zooming in and out when zero
> is on the axis, the axis value tends to switch between 0 and some small
> number like -1.49012e-8 (the value varies). All of the other numbers stay
> "nice", but zero flickers between nice and not. (Naughty, naughty zero...)
>

I had not noticed this, but can imagine why it might be happening. I will
try to look into this as a bug fix before the final release is made.

>
> Not a huge thing, but I thought you might want to know about it.
>

Certainly, getting the polish on the charts is important.

>
> Oh, and another thing that may or may not come under your purview: I'm not
> sure if it's often or always, but now when I do a Plot Selection Over Time
> there aren't any Variables in the Line Series list checked by default, so
> the line plot panel comes up blank and it looks like something went wrong
> (and to new users it may not be obvious what is going on).
>

This is now using the class the old charts used to set default visibility.
To be honest I am not certain how it behaves, but assumed keeping the same
defaults would be good. If they have changed I will look into improving the
situation here too. Essentially all series are visible, and then the
ParaView class makes certain series not visible.

Thanks for the early feedback and testing. Still more bugs to squash, but I
think it is moving in the right direction.

Thanks,

Marcus

>
> On Mar 17, 2010, at 8:04 PM, Marcus D. Hanwell wrote:
>
> On Wed, Mar 17, 2010 at 4:52 PM, Eric E. Monson <emonson at cs.duke.edu>wrote:
>
>> Hey Marcus,
>>
>> We spoke a week or so ago about being able to control symbol size in the
>> new charts. Now that CVS ParaView has switched over to the new charting
>> system as default, this issue is more pressing. When you plot with symbols
>> turned on there are times when the symbols are so much larger than the range
>> of values that the symbols obscure the whole plot.
>>
>> To reproduce it, create a default sphere source and then Plot Data. Try
>> something like plotting Points (0) against Points (1) with no line, but just
>> Crosses. The symbols are much bigger than the range of values.
>>
>> Talk to you later,
>> -Eric
>>
>> Hi Eric,
>
> This should be better now, changes I had to make yesterday to support
> arbitrarily big screenshots (via tiled snapshots) introduced a new bug where
> the marker sizes were not scaled correctly. As Pat pointed out, I committed
> a fix for this issue earlier today. I should expose a second spin box for
> the user to set the marker size too, but have not done that yet.
>
> The circle is now a circle too, on all cards ;-) Please let me know if you
> hit any other issues.
>
> Marcus
>
>
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