[Kst] ASCII data - confusion about multiple plots

[Daniel Miller]

I would appreciate the command-line args to handle plotting multiple files;
the --help argument only documents 5 arguments, and doesn't even work the
way it is documented... I found a more complete command-line help in the
Kst Handbook, but task like these aren't all that obvious...


On Wed, Feb 3, 2016 at 3:52 PM, Barth Netterfield <
netterfield at astro.utoronto.ca> wrote:

> Yes:
> the last page of the data wizard gives an option to put the curve in a
> plot that already exists.
> The curve creation dialog has an option to put the curve in a plot that
> already exists.
> You can do it from the command line even easier.  I can give you the
> incantation if you can't clean it from kst2 --help.
>
> cbn
>
>
>
>
>
> On Wed, Feb 3, 2016 at 6:36 PM, Daniel Miller <dmiller at vitalconnect.com>
> wrote:
>
>> hmmm... well, I prefer lines to points in kst2; the plots with points are
>> sort of hard to utilize, but I'll take a look at it and see what it looks
>> like.
>>
>> Alternately, is there some way to input three data files, but have them
>> plotted on one plot??  I haven't really seen that in the manual either...
>>
>>
>> On Wed, Feb 3, 2016 at 3:33 PM, Barth Netterfield <
>> netterfield at astro.utoronto.ca> wrote:
>>
>>> As you have sort of figured out, kst's data source model will want you
>>> to have 3 different ascii files in this case.
>>>
>>> But, if you just want to plot points, and not lines, you can use NaN as
>>> your bad data marker.
>>>
>>> On Wed, Feb 3, 2016 at 6:30 PM, Daniel Miller <dmiller at vitalconnect.com>
>>> wrote:
>>>
>>>> I have kst2 working with single plot stream... that works very nicely.
>>>> At this point, I'm using space as separator between fields.
>>>>
>>>> However, we have a couple of data streams which contain multiple data
>>>> (x, y, z); in this situation, what our data would look like is ( timestamp,
>>>> data), but the data would be one of { data_x, data_y, data_z }.  In other
>>>> words, the data stream that I receive from the hardware, delivers data_x,
>>>> data_y, data_z in separate messages, with different timestamps.
>>>>
>>>> I want kst2 to read this ascii data file and plot 3 separate graphs on
>>>> one plot.
>>>> I'm a little confused about how to do this, though;
>>>>
>>>> for example, say I have a line with data for data_z; this will look
>>>> something like:
>>>> timestamp data_z
>>>> however, I want one file to contain data for all three streams, so I'm
>>>> guessing I need to have empty fields for the not-relevant data; maybe
>>>> something like:
>>>> timestamp unused_x unused_y data_z
>>>> timestamp unused_x data_y unused_z
>>>> etc...
>>>>
>>>> So first off, I probably have to use a different separator rather than
>>>> space for separator; but even with comma, I still have a problem; for
>>>> example:
>>>>
>>>> timestamp, 0, 0, data_z
>>>> timestamp, 0, data_y, 0
>>>>
>>>> Except that in some cases, 0 is valid data; I *think* I need some way
>>>> to represent "invalid data" in the unused fields.
>>>>
>>>> Is this understandable??  How do I handle this??
>>>> Dan Miller
>>>>
>>>> _______________________________________________
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>>>> Kst at kde.org
>>>> https://mail.kde.org/mailman/listinfo/kst
>>>>
>>>>
>>>
>>>
>>> --
>>> C. Barth Netterfield
>>> University of Toronto
>>> 416-845-0946
>>>
>>>
>>> _______________________________________________
>>> Kst mailing list
>>> Kst at kde.org
>>> https://mail.kde.org/mailman/listinfo/kst
>>>
>>>
>>
>> _______________________________________________
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>> https://mail.kde.org/mailman/listinfo/kst
>>
>>
>
>
> --
> C. Barth Netterfield
> University of Toronto
> 416-845-0946
>
>
> _______________________________________________
> Kst mailing list
> Kst at kde.org
> https://mail.kde.org/mailman/listinfo/kst
>
>
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