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plotting csv data with some empty regions

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  plotting csv data with some empty regions adam.preble@gmail.com - 2012-07-08 23:22 -0700
    Re: plotting csv data with some empty regions antar3s86@gmail.com - 2012-07-09 05:40 -0700
      Re: plotting csv data with some empty regions adam.preble@gmail.com - 2012-07-10 07:12 -0700
        Re: plotting csv data with some empty regions sfeam <sfeam@users.sourceforge.net> - 2012-07-10 12:28 -0700

#1254 — plotting csv data with some empty regions

I was hoping to do a line plot for some time-domain data that looks something like this:

1,,
3,,
4,,
2,,
3,,
4,1,5
2,2,7
3,1,
2,1,
5,,

With:
plot 'stuff.csv' with lines

I get the first column fine.

Let's try:
plot 'stuff.csv' using 1:3 with lines
                                ^
         warning: Skipping data file with no valid points
                                                   ^
         x range is invalid


I am hoping for something that will start plotting the other lines when they become relevant, and stops plotting them as their data regions go stale again.  Is this readily possible?  I had pondered just popping in zeroes, but in the expanded set this becomes horrific to read; the chops when it transitions to/from zero make the plots useless.

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#1256

Am Montag, 9. Juli 2012 08:22:34 UTC+2 schrieb adam....@gmail.com:
> I was hoping to do a line plot for some time-domain data that looks something like this:
> 
> 1,,
> 3,,
> 4,,
> 2,,
> 3,,
> 4,1,5
> 2,2,7
> 3,1,
> 2,1,
> 5,,
> 
> With:
> plot 'stuff.csv' with lines
> 
> I get the first column fine.
> 
> Let's try:
> plot 'stuff.csv' using 1:3 with lines
>                                 ^
>          warning: Skipping data file with no valid points
>                                                    ^
>          x range is invalid

> 
> I am hoping for something that will start plotting the other lines when they become relevant, and stops plotting them as their data regions go stale again.  Is this readily possible?  I had pondered just popping in zeroes, but in the expanded set this becomes horrific to read; the chops when it transitions to/from zero make the plots useless.

You have to tell gnuplot what kind of separator you use:

set datafile separator ","

There you go ;)

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#1259

On Monday, July 9, 2012 7:40:43 AM UTC-5, (unknown) wrote:
> You have to tell gnuplot what kind of separator you use:
> 
> set datafile separator ","
> 
> There you go ;)

Gah of course.

The plot isn't what I expect yet though.  I was hoping to see three lines going left to right, with some starting later and ending sooner than the line representing the first column.  Instead, I get one line that begins to jump around--including backwards.  Is there something else I need to specify to have it treat each column like it's own series?

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#1262

adam.preble@gmail.com wrote:

> On Monday, July 9, 2012 7:40:43 AM UTC-5, (unknown) wrote:
>> You have to tell gnuplot what kind of separator you use:
>> 
>> set datafile separator ","
>> 
>> There you go ;)
> 
> Gah of course.
> 
> The plot isn't what I expect yet though.  I was hoping to see three lines
> going left to right, with some starting later and ending sooner than the
> line representing the first column.  Instead, I get one line that begins
> to jump around--including backwards.  Is there something else I need to
> specify to have it treat each column like it's own series?

  plot 'stuff.csv' using 1, '' using 2, '' using 3

or in the current gnuplot version

  plot for [N=1:3] 'stuff.csv' using N

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