Cfrgtkky

The solution given in the same question asked by @A.Ellett does not work for me.
I am running Windows 10 and I installed gnuplot gp525-win64-mingw.exe as indicated by the manual after downloading it here:

During installation, I checked the box Add application directory to your environmental path as indicated in the manual.

I added --enable-write18 as indicated in the manual as well as --shell-escape as indicated in the above mentioned solution.

Despite this I still don't get the curve as you can see:

The error is the following

Package pgf Warning: Plot data file `test-media.tkzfct.table' not
found. on input line 9.

Edit : Added the log file

    This is pdfTeX, Version 3.14159265-2.6-1.40.19 (MiKTeX 2.9.6840 64-bit) (preloaded format=latex 2018.10.23)  23 OCT 2018 12:50

entering extended mode

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(test-media.aux)

openout1 = `test-media.aux'.



LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line 4.

LaTeX Font Info:    ... okay on input line 4.

LaTeX Font Info:    Checking defaults for T1/cmr/m/n on input line 4.

LaTeX Font Info:    ... okay on input line 4.

LaTeX Font Info:    Checking defaults for OT1/cmr/m/n on input line 4.

LaTeX Font Info:    ... okay on input line 4.

LaTeX Font Info:    Checking defaults for OMS/cmsy/m/n on input line 4.

LaTeX Font Info:    ... okay on input line 4.

LaTeX Font Info:    Checking defaults for OMX/cmex/m/n on input line 4.

LaTeX Font Info:    ... okay on input line 4.

LaTeX Font Info:    Checking defaults for U/cmr/m/n on input line 4.

LaTeX Font Info:    ... okay on input line 4.

 ABD: EveryShipout initializing macros

LaTeX Font Info:    External font `cmex10' loaded for size

(Font)              <7> on input line 10.

LaTeX Font Info:    External font `cmex10' loaded for size

(Font)              <5> on input line 10.

openout3 = `test-media.tkzfct.gnuplot'.



runsystem(gnuplot test-media.tkzfct.gnuplot)...executed.







Package pgf Warning: Plot data file `test-media.tkzfct.table' not found. on inp

ut line 10.



[1



] (test-media.aux) ) 

Here is how much of TeX's memory you used:

 14108 strings out of 492967

 297816 string characters out of 3135749

 363344 words of memory out of 3000000

 17711 multiletter control sequences out of 15000+200000

 3640 words of font info for 14 fonts, out of 3000000 for 9000

 1141 hyphenation exceptions out of 8191

 55i,5n,83p,414b,756s stack positions out of 5000i,500n,10000p,200000b,50000s



Output written on test-media.dvi (1 page, 14996 bytes).

As advised by TorbjørnT. I ask a new question. What's going on?

Translated with www.DeepL.com/Translator

The code posted in the linked answer works in texlive 2018

You get the warning

Package pgf Warning: Plot data file `bb007.tkzfct.table' not found. on input li

ne 9.

if you do not use --shell-escape (or presumably if gnuplot can not be found in the path)

Look for gnuplot in the log file, if the problem is --shell-escape then the log will show

runsystem(gnuplot bb007.tkzfct.gnuplot)...disabled (restricted).

If --shell-escape is enabled then the log will look like

runsystem(gnuplot bb007.tkzfct.gnuplot)...executed.



Package pgf Warning: Plot data file `bb007.tkzfct.table' not found. on input li

ne 9.

which means that TeX tried to run gnuplot but it failed to make the plot table data for some reason.

Note that gnuplot needs to be in the path (which may require a system reboot if you have only just installed it).