[vtkusers] Parallel coordinates Extraction

Darshan Pai darshanpai at gmail.com
Thu Mar 31 18:38:33 EDT 2011


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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