[vtkusers] Plotting line segments with vtkChartXY

[Cory Quammen]

Andrew,

How are you designating the plot values as (not set)? Are you just not
setting them? I'm guessing that the plot is just using whatever the default
value is for the array you are plotting, which may be 0.

I don't know that vtkChartXY supports your use case. I think you will need
to use separate plots for each section of you plot.

Sorry if that isn't much help.

Cory

On Wed, Aug 26, 2015 at 3:41 AM, Andrew Zhilka <hotsmileband at gmail.com>
wrote:

> Hi all,
>
> I am trying to create a line plot. I have already seen an example and my
> program works if I have continuous lines.
> Let's say I have the following table (continuous case):
>
> X values | Plot value
> 1            | 1
> 2            | 2
> 3            | 3
> 4            | 4
>
> This case works perfectly but if I have the following one
>
> X values | Plot value
> 1            | 1
> 2            | (not set)
> 3            | (not set)
> 4            | 4
>
> the plot behaves like if I set the second and the third plot values to 0.
> And I just would like to have a gap. Because of this very reason I can not
> draw 2 lines independently to achieve the gap like this:
>
> X values | Plot value 1| Plot value 2
> 1            | 1                | (not set)
> 2            | (not set)      | (not set)
> 3            | (not set)      | (not set)
> 4            | (not set)      | 4
>
> Please, advise on what can be done to solve the issue
>
> Regards,
> Andrey
>
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-- 
Cory Quammen
R&D Engineer
Kitware, Inc.
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