Re: conflict of separator and missing

[<pl...@pi...>]

On 14/06/16 09:43, pl...@pi... wrote:
>
> I have a data csv datafile which uses -99.99 as it missing data value.
>
> with the following settings the 'missing' data are getting plotted.
>
>   set datafile separator ","
>   set datafile missing "-99.99"
>
>
>   show datafile missing
>
>          "-99.99" in datafile is interpreted as missing value
>
>
> As a wild guess I tried the following and the missing data now get
> correctly removed.
>
>   set datafile missing "-99.99,"
>
>
> This seems to be an illogical order of parsing.
>
> Surely the data line needs to be parsed into its constituent data
> columns before trying to detect the missing data string.
>
> Regards, Peter
>
>
> gnuplot> show version
>
>          G N U P L O T
>          Version 5.0 patchlevel 1    last modified 2015-06-07
>
>          Copyright (C) 1986-1993, 1998, 2004, 2007-2015
>          Thomas Williams, Colin Kelley and many others
>
>          gnuplot home:     http://www.gnuplot.info
>          faq, bugs, etc:   type "help FAQ"
>          immediate help:   type "help"  (plot window: hit 'h')
>
>
>

Just to complete this here is a sample line from the file displaying 
this bug.

1958, 06,   21351, 1958.4548,   -99.99,   -99.99,     317.25,   315.14, 
    317.25,   315.14


It seems that the data is being parsed into fields using the default 
space delimiter when looking for the "missing" string.  It should be 
using proper user-defined delimiter.

Peter.