Re: [Gnuplot-info] columns with time format as "y"

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Hello,

As follow on to the OP question I have data format of the form:

,2019-04-16,20:30:00,30522,5
,2019-04-16,20:31:00,30523,6
,2019-04-16,20:32:00,30524,7
,2019-04-16,20:33:00,30525,8
,2019-04-16,20:34:00,30526,9
,2019-04-16,20:35:00,30527,10
,2019-04-16,20:36:00,30528,11
,2019-04-16,20:37:00,30529,12
,2019-04-16,20:38:00,30530,13
,2019-04-16,20:39:00,30531,14

Yes, the data lines start with "," for reasons I will skip
other than to say this is the data by design.

I had tried a:

set timefmt ",%Y-%m-%d,%H:%M:%S"

a few years ago and again a few months ago with no success.
Just an error message to effect of invalid time format in
data.  I have had to add extra external step to filter the
data.  The issue is the data is very large so it adds a couple
minutes to filter the data before I can input the date to
gnuplot.  I really would like to eliminate the data filter step
that eliminates the leading comma of the data as this data is
processed every 15 minutes for now as I cannot filter the data
every 5 minutes due to the added filtering step that then uses:

set timefmt "%Y-%m-%d,%H:%M:%S"

John L. Males
Toronto, Ontario
Canada
20 April 2020 16:00 -0400 EDT

================================================================

2020-04-20 19:45:51+0000-UTC Time: 1587411951 PC/System time

20 Apr 19:45:51 ntpdate[64207]: ntpdate 4.2.8p12-a (1)

20 Apr 19:46:06 ntpdate[65654]: step time server
128.100.100.128 offset 0.003394 sec

FreeBSD 11.3-STABLE FreeBSD 11.3-STABLE #0 r349903: Thu Jul 11
16:13:47 UTC 2019
ro...@re...:/usr/obj/usr/src/sys/GENERIC 

(Work in progress alternative to Linux Kernel of its own right,
 Debian, and
 other Linux based Kernel distributions determined.)

Intel(R) Core(TM) i3-2367M CPU @ 1.40GHz
Intel(R) Core(TM) i3-2367M CPU @ 1.40GHz (1396.86-MHz K8-class
CPU) Intel(R) Core(TM) i3-2367M CPU @ 1.40GHz (1396.86-MHz
K8-class CPU) Intel(R) Core(TM) i3-2367M CPU @ 1.40GHz
(1396.86-MHz K8-class CPU) Intel(R) Core(TM) i3-2367M CPU @
1.40GHz (1396.86-MHz K8-class CPU) Intel(R) Core(TM) i3-2367M
CPU @ 1.40GHz (1396.86-MHz K8-class CPU)

dev.cpu.0.temperature: 73.0C
dev.cpu.1.temperature: 73.0C
dev.cpu.2.temperature: 69.0C
dev.cpu.3.temperature: 69.0C
hw.acpi.thermal.tz0.temperature: 75.1C

vmstat -s:

 83430749 cpu context switches
  1277504 device interrupts
   368458 software interrupts
 31639133 traps
264899647 system calls
       27 kernel threads created
     1920  fork() calls
      596 vfork() calls
        0 rfork() calls
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   113093 copy-on-write faults
      463 copy-on-write optimized faults
 28402363 zero fill pages zeroed
        0 zero fill pages prezeroed
       48 intransit blocking page faults
 32157102 total VM faults taken
     6075 page faults requiring I/O
        0 pages affected by kernel thread creation
    93134 pages affected by  fork()
    20968 pages affected by vfork()
        0 pages affected by rfork()
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        0 pages freed by daemon
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    76679 pages in the laundry queue
   262762 pages wired down
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     4096 bytes per page
  4907338 total name lookups
          cache hits (96% pos + 1% neg) system 0% per-directory
          deletions 0%, falsehits 0%, toolong 0%

Boot time : 1587398332

procs     memory        page                    disks
faults        cpu0     cpu1     cpu2     cpu3 r b w     avm
fre  flt  re  pi  po    fr   sr ad0 pa0   in    sy    cs us sy
id us sy id us sy id us sy id 0 0 0 30655696 9434572 2359   0
0   0  2190  887   0   0   94 19431  6120 13  4 83 13  4 83 13
4 83 13  4 83

memory info:

real memory  = 17179869184 (16384 MB)
avail memory = 16495013888 (15730 MB)

last pid: 71600;  load averages:  0.53,  0.79,  0.81  up
0+03:47:14    19:46:06 53 processes:  1 running, 52 sleeping

Mem: 1346M Active, 3946M Inact, 300M Laundry, 1027M Wired, 442M
Buf, 9213M Free Swap: 48G Total, 48G Free

hw.physmem: 17053859840
hw.usermem: 15977410560
hw.realmem: 17179869184

             total       used       free     shared
buffers     cached Mem:      16210872    2735676
13475196          0          0          0 Swap:
50331644          0   50331644

swapinfo:

Device          1K-blocks     Used    Avail Capacity
/dev/ada0s1b     50331644        0 50331644     0%

vmstat:

procs     memory        page                    disks
faults         cpu r b w     avm     fre  flt  re  pi  po
fr   sr ad0 pa0   in    sy    cs us sy id 0 0 0 30655696
9434576 2359   0   0   0  2190  887   0   0   94 19430  6120
13  4 83

Message replied to:

Date: Mon, 20 Apr 2020 12:00:40 -0700
From: Ethan Merritt <eam...@gm...>
To: gnu...@li...
Subject: Re: [Gnuplot-info] columns with time format as "y"

> On Monday, 20 April 2020 11:30:03 PDT co...@tr... wrote:
> > 
> > Hello All,
> > 
> > I need help with the following problem:
> > 
> > Let's say my input data look like (columns delimited by \t):
> > 
> >    2019-04-16 20:30:00	30522	5
> >    2019-04-16 20:31:00	30523	6
> >    2019-04-16 20:32:00	30524	7
> >    2019-04-16 20:33:00	30525	8
> >    2019-04-16 20:34:00	30526	9
> >    2019-04-16 20:35:00	30527	10
> >    2019-04-16 20:36:00	30528	11
> >    2019-04-16 20:37:00	30529	12
> >    2019-04-16 20:38:00	30530	13
> >    2019-04-16 20:39:00	30531	14
> > 
> > Column 1 & 2 (space separated) considered as date/time.
> > 
> > Plotting Col. 3 or 4 against date/time works fine:
> > 
> >    set xdata time
> >    set timefmt "%Y-%m-%d\t%H:%M:%S"
> >    set format x "%d.%m. %H:%M"
> >    plot 'my_file.txt' using 1:3 title "col 3" axis x1y1
> > with linespoints pt7 lc 4, '' using 1:4 title "col 4" axis
> > x1y1 with linespoints pt7 lc 7
> > 
> > Special feature: Although columns 1 and 2 *together* give
> > the timestamp, only "1:..." is given for "using" statement.
> > This method is often found in examples.
> > 
> > But now I would like - don't ask me why - to plot the
> > timestamp against column 3, i.e. column 3 as "x" and the
> > timestamp (columns 1 & 2) as "y".
> > 
> > I was trying:
> > 
> >    set ydata time "%Y-%m-%d\t%H:%M:%S"
> >    set timefmt "%Y-%m-%d\t%H:%M:%S"
> >    set format y "%d.%m. %H:%M"
> >    plot 'my_file.txt' using 3:1 title "col 3" axis x1y1 with
> >      linespoints pt7 lc 4
> > 
> > Result: only date is used for plotting "y", time ignored!
> 
> Replace the tab with a space in timefmt:
> 
>     set timefmt "%Y-%m-%d %H:%M:%S"
> 
> The space character in the format will match any whitespace
> sequence, including <tab>.
> 
> 	Ethan
> 
> 
> 
> 
> 
> 
> _______________________________________________
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> gnu...@li...
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Re: [Gnuplot-info] columns with time format as "y"

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Re: [Gnuplot-info] columns with time format as "y"