Re: [Gnuplot-info] Using same point style on linespoints

[Dave H. <da...@ho...>]

On Fri, 19 Sep 2014, Marek W. Gutowski wrote:

> First run the command
> gnuplot> test

Neat!  Thanks; I'm going to laminate that page...

> gnuplot> plot "your_data_file" using 1:2 with linespoints ilne type 3 
> pointype 4

Ah, that reminds me: I'm also plotting -- or rather, trying to plot -- my 
BMI (body mass index), which is weight divided by height squared (pref. in 
metric units).

I have:

    #
    # BMI stuff (kg/m^2).
    #
    height = 1.83           # A bit over 6ft - must check
    bmi(weight) = weight/(height*height)

    [...]

    set style data linespoints

    [...]

    plot datafile using 1:($3) title 'Weight (kg)', \
	bmi($3) title 'BMI (kg/m^2)' with linespoints, \
	datafile using 1:($4) title 'Girth (cm)', \
	datafile using 1:($5) title 'Sys (Hg)', \
	datafile using 1:($6) title 'Dia (Hg)', \
	datafile using 1:($7) title 'HR (bpm)'

Now, without the "linespoints" on the bmi() line, the BMI key is just a 
line; with it, the BMI key gains a point, so I assume that the style is 
defaulted for plotting user functions.

The thing is, no BMI data is printed, no matter how much I fake the 
numbers from lightweight to heavyweight, so please, what am I missing?

I've tried setting some sort of a range, but I get syntax errors.

Thanks.

-- Dave