[Kst] Sparse Ascii data

[Peter Kümmel]

I added a configure option how empty values should be handled:
null, nan, or the previous value should be used.

Peter

On 20.11.2013 10:04, David McMinn wrote:
> Hi Nicolas,
>
> When you say that Kst skips the point you should perhaps make it clear that it causes a gap in the line (it stops drawing at the previous point and starts drawing at the next point), rather than drawing a line directly from the previous to the next point.
>
> Cheers.
>
> -----Original Message-----
> From: kst-bounces at kde.org [mailto:kst-bounces at kde.org] On Behalf Of Brisset, Nicolas
> Sent: 20 November 2013 08:41
> To: kst at kde.org
> Subject: Re: [Kst] Sparse Ascii data
>
> Peter,
>
> It is indeed the responsibility of the data source to decide what to do with missing data. The nice way to handle it is to return a NaN value, so that Kst skips the point when drawing the curve. I think we used to do this in Kst 1.x, and that's what we should do here.
>
> Nicolas
>
> -----Ursprüngliche Nachricht-----
> Von: kst-bounces at kde.org [mailto:kst-bounces at kde.org] Im Auftrag von Peter Kümmel
> Gesendet: Mittwoch, 20. November 2013 08:33
> An: kst at kde.org
> Betreff: [Kst] Sparse Ascii data
>
> Is there already a way to handle sparse Ascii data (data with missing values at some rows)?
>
> N, Col1, Col2
> 1,    1,    2
> 2,     ,    2
> 3,    1,    2
>
> The idea is to a have a plot for Col1 which is a horizontal line at 1 which does not draw down to zero at row 2.
>
> Is it possible to set a "ignore this value" in the vector, or is it the responsibility of the data source plugin to not add a zero-value at such a entry when reading the file?
>
> Thanks,
> Peter
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