[vtkusers] Parallel coordinates Extraction

[Darshan Pai]

Eric,

I see what you are saying but then I guess there is a bug in the
implementation or else I am doing something wrong .
 If I hide one of the columns less than 10 and unhide one column greater
than 10 it crashes .
Also if I try to set the max and min of columns greater than 10 it crashes
too .

It looks as if it only defaults to the first 10 columns.

Regards
Darshan

On Fri, Apr 1, 2011 at 9:43 AM, Eric E. Monson <emonson at cs.duke.edu> wrote:

> Hey Darshan,
>
> I think there is still a default limit of 10 columns, which was probably
> just so the chart would still end up looking reasonable even if you fed it a
> table with a thousand columns. All you need to do is loop through your table
> column names and the call SetColumnVisibility(vtkStdString name, bool
> visible) for the ones you want to appear. Note that there is also a
> convenience method SetColumnVisibilityAll(bool visible) in case you want to
> turn them all on, or want all off so you can just turn on a select few.
>
> -Eric
>
>
> On Mar 31, 2011, at 6:38 PM, Darshan Pai wrote:
>
> Eric,
>
> Is there an upper limit to the number of axis the Parallel Coordinates
> defaults too ?
> I was just trying for 17 , but i does not allow me anything greater than 10
> .
>
> Regards
> Darshan
>
>
> On Thu, Mar 31, 2011 at 2:00 PM, Darshan Pai <darshanpai at gmail.com> wrote:
>
>> thanks eric , works great!!
>>
>>
>> On Thu, Mar 31, 2011 at 1:38 PM, Eric E. Monson <emonson at cs.duke.edu>wrote:
>>
>>> Hey Darshan,
>>>
>>> Because there's still a slight bug in the plot class you have to set the
>>> line opacity through the plot's Pen rather than through the lookup table.
>>> You also set the line width through the Pen (this is Python, so you may have
>>> to do some casting in C++):
>>>
>>> chart.GetPlot(0).GetPen().SetOpacityF(0.8)
>>> chart.GetPlot(0).GetPen().SetWidth(6)
>>>
>>> You set the scalar range for each axis (index i) by first calling
>>> chart.GetAxis(i).SetBehavior(1) to set it to a "fixed" range rather than
>>> auto-rescaling, and then you call chart.GetAxis(i).SetMaximum() and
>>> SetMinimum(). If you want/need to then specify where the ticks are and what
>>> their labels are, then you need to call chart.GetAxis(i).SetTickPositions()
>>> with a vtkDoubleArray of position values and SetTickLabels() with a
>>> vtkStringArray of labels.
>>>
>>> -Eric
>>>
>>>
>>> On Mar 30, 2011, at 4:07 PM, Darshan Pai wrote:
>>>
>>> > So i updated to the current nightly build . Now I see that the category
>>> colors are correct , but the output is transparent . I changed the opacity
>>> of the plot and set it to 1 but still the output lines are very light . Is
>>> there any way to change this behaviour . Also can I change the line Size ?
>>> >
>>> > Regards
>>> > Darshan
>>> > <Updated_PC.jpg>
>>>
>>>
>>
>
>
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