[Kst] ASCII data - confusion about multiple plots
Daniel Miller
dmiller at vitalconnect.com
Thu Feb 4 01:25:47 UTC 2016
I'm using kst V2.0.8 on Windows 7, 64-bit.
When I do --help, I get a pop-up window that shows only:
KST Command Line Usage
************************
*** Load a kst file: ***
kst [OPTIONS] kstfile
[OPTIONS] will override the datasource parameters for all data sources in
the kst file:
-F <datasource>
-f <startframe>
-n <numframes>
-s <frames per sample>
-a (apply averaging filter: requires -s)
************************
it *does* have a "Show Details..." button, but that opens up help in a
5-line scrolling window, but it's rather hard to read. Actually, I
probably could copy-and-paste that window into a doc, but I ended up
getting the data from somewhere else...
On Wed, Feb 3, 2016 at 4:06 PM, Barth Netterfield <
netterfield at astro.utoronto.ca> wrote:
> Hmmm... What version of kst are you using? what platform?
>
> I am on Linux.
>
> For a reasonably recent version of kst2:
>
> If I have files d1.dat, d2.dat, and d3.dat. Each are 2 column data,
> delimited to whatever you have set the default to in the gui. (by default,
> this is space).
>
> $ kst2 -P 1 d1.dat -x 1 -y 2 d2.dat -x 1 -y 2 d3.dat -x 1 -y 2
>
> will put all three curves in the same plot
>
> Whe I try kst2 --help, I get:
>
> $ kst2 --help
> KST Command Line Usage
> ************************
> *** Load a kst file: ***
> kst [OPTIONS] kstfile
>
> [OPTIONS] will override the datasource parameters for all data sources in
> the kst file:
> -F <datasource>
> -f <startframe>
> -n <numframes>
> -s <frames per sample>
> -a (apply averaging filter: requires -s)
>
> ************************
> *** Read a data file ***
> kst datasource OPTIONS [datasource OPTIONS []]
>
> OPTIONS are read and interpreted in order. Except for data object options,
> all are applied to all future data objects, unless later overridden.
> Output Options:
> --print <filename> Print to file and exit.
> --landscape Print in landscape mode.
> --portrait Print in portrait mode.
> --Letter Print to Letter sized paper.
> --A4 Print to A4 sized paper.
> --png <filename> Render to a png image, and exit.
> File Options:
> -f <startframe> default: 'end' counts from end.
> -n <numframes> default: 'end' reads to end of file
> -s <frames per sample> default: 0 (read every sample)
> -a apply averaging filter: requires -s
>
> Ascii File Options - for ascii files only: these are all stick
> --asciiDataStart <Line> Data starts here. Files start at line 1.
> --asciiFieldNames <Line> Field names are in this row.
> --asciiNoFieldNames Fields are named for their data column
> --asciiReadUnits <Line> Read units from line <Line>
> --asciiNoUnits Do not read units
> --asciiSpaceDelim Columns are Space/tab delimited
> --asciiDelim <char> Columns are dlimited with <char>
> --asciiFixedWidth <w> Columns have width <w>
> --asciiNoFixedWidth Columns are delimited, not fixed width
> --asciiDecimalDot Use a . as a decimal separator (ie, 10.1)
> --asciiDecimalComma Use a , as a decimal separator (ie, 10,1)
> Position:
> -P <plot name>: Place curves in one plot.
> -A Place future curves in individual plots.
> -m <columns> Layout plots in columns
> -T <tab name> Place future curves a new tab.
> Appearance
> -d: use points for the next curve
> -l: use lines for the next curve
> -b: use bargraph for the next curve
> --xlabel <X Label> Set X label of all future plots.
> --ylabel <Y Label> Set Y label of all future plots.
> --xlabelauto AutoSet X label of all future plots.
> --ylabelauto AutoSet Y label of all future plots.
> Data Object Modifiers
> -x <field>: Create vector and use as X vector for
> curves.
> -e <field>: Create vector and use as Y-error vector for
> next -y.
> -r <rate>: sample rate (spectra & spectograms).
> Data Objects:
> -y <field> plot an XY curve of field.
> -p <field> plot the spectrum of field.
> -h <field> plot a histogram of field.
> -z <field> plot an image of matrix field.
>
> ****************
> *** Examples ***
>
> Data sources and fields:
> Plot all data in column 2 from data.dat.
> kst data.dat -y 2
>
> Same as above, except only read 20 lines, starting at line 10.
> kst data.dat -f 10 -n 20 -y 2
>
> ... also read col 1. One plot per curve.
> kst data.dat -f 10 -n 20 -y 1 -y 2
>
> Read col 1 from data2.dat and col 1 from data.dat
> kst data.dat -f 10 -n 20 -y 2 data2.dat -y 1
>
> Same as above, except read 40 lines starting at 30 in data2.dat
> kst data.dat -f 10 -n 20 -y 2 data2.dat -f 30 -n 40 -y 1
>
> Specify the X vector and error bars:
> Plot x = col 1 and Y = col 2 and error flags = col 3 from data.dat
> kst data.dat -x 1 -e 3 -y 2
>
> Get the X vector from data1.dat, and the Y vector from data2.dat.
> kst data1.dat -x 1 data2.dat -y 1
>
> Placement:
> Plot column 2 and column 3 in plot P1 and column 4 in plot P2
> kst data.dat -P P1 -y 2 -y 3 -P P2 -y 4
>
>
>
> On Wed, Feb 3, 2016 at 6:59 PM, Daniel Miller <dmiller at vitalconnect.com>
> wrote:
>
>> 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
>>>>>>
>>>>>> _______________________________________________
>>>>>> Kst mailing list
>>>>>> 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
>>>>>
>>>>>
>>>>
>>>> _______________________________________________
>>>> Kst mailing list
>>>> 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
>>>
>>>
>>
>> _______________________________________________
>> Kst mailing list
>> 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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