[vtkusers] Plotting line segments with vtkChartXY

[Andrew Zhilka]

Hi Cory,

Yes, I simply do not set values and there is vtkFloatArray underneath.
I mentioned that creating new columns for new plots will cause the same
behaviour.
So I wonder if it is possible to combine several charts in one scene

Regards,
Andrew
26 авг. 2015 г. 4:35 PM пользователь "Cory Quammen" <
cory.quammen at kitware.com> написал:

> 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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