gnuplot-info

[Gnuplot-info] change colors of bars, and add small digits

[Emanuel B. <emb...@st...>]

I have a project going on here:

    http://user.it.uu.se/~embe8573/everest-plot/

If we focus on this plot:

    http://user.it.uu.se/~embe8573/everest-plot/early.png

I'd like to change two things:

    1) How can I give the bars more different colors?
       Especially if printed on a black-and-white
       printer, the bars get too similar. Instead one
       can be black, and the other white (with
       a border).

    2) How can I add small digits above each bar,
       saying the number which the bar illustrates?
       E.g.,

             3
          2  |
          |  |  1
          |  |  |
         ---------

Here is the .gpi file:

# This file: http://user.it.uu.se/~embe8573/everest-plot/everest.gpi

set terminal png size 800,600 font "cm-super"

datastring = sprintf("%s", data)

set xtics 1 font ",8" rotate by 90

if (datastring eq "early.dat") {
    set ytics 1
    set key left top height 1
    set title font ",14" "Mount Everest: Framgångsrika bestigningar, dödsfall"
    set xtics offset 0.2,graph -0.0475
}
else {
    set ytics 20
    unset key
    set xtics offset 0.2,graph -0.045
}
set ytics font ",6"

set grid

set style data histogram
set style fill solid

plot for [COL=2:3] datastring using COL:xticlabels(1) title column

-- 
underground experts united
http://user.it.uu.se/~embe8573

Re: [Gnuplot-info] change colors of bars, and add small digits

[Ethan A M. <eam...@gm...>]

On Monday, 01 February 2016 03:18:24 AM Emanuel Berg wrote:
> I have a project going on here:
> 
>     http://user.it.uu.se/~embe8573/everest-plot/
> 
> If we focus on this plot:
> 
>     http://user.it.uu.se/~embe8573/everest-plot/early.png
> 
> I'd like to change two things:
> 
>     1) How can I give the bars more different colors?
>        Especially if printed on a black-and-white
>        printer, the bars get too similar. Instead one
>        can be black, and the other white (with
>        a border).

There are many ways you could specify color.
Here is one:
 set linetype 1 linecolor rgb "white"
 set linetype 2 linecolor rgb "black"

To get a border:

 set style fill solid 1.0 border

>     2) How can I add small digits above each bar,
>        saying the number which the bar illustrates?
>        E.g.,
> 
>              3
>           2  |
>           |  |  1
>           |  |  |
>          ---------

See 5th plot of this demo

http://gnuplot.sourceforge.net/demo_svg_5.0/datastrings.html[1] 




> 
> Here is the .gpi file:
> 
> # This file: http://user.it.uu.se/~embe8573/everest-plot/everest.gpi
> 
> set terminal png size 800,600 font "cm-super"
> 
> datastring = sprintf("%s", data)
> 
> set xtics 1 font ",8" rotate by 90
> 
> if (datastring eq "early.dat") {
>     set ytics 1
>     set key left top height 1
>     set title font ",14" "Mount Everest: Framgångsrika bestigningar, dödsfall"
>     set xtics offset 0.2,graph -0.0475
> }
> else {
>     set ytics 20
>     unset key
>     set xtics offset 0.2,graph -0.045
> }
> set ytics font ",6"
> 
> set grid
> 
> set style data histogram
> set style fill solid
> 
> plot for [COL=2:3] datastring using COL:xticlabels(1) title column
> 
> 

-- 


--------
[1] http://gnuplot.sourceforge.net/demo_svg_5.0/datastrings.html

Re: [Gnuplot-info] change colors of bars, and add small digits

[Emanuel B. <emb...@st...>]

Ethan A Merritt <eam...@gm...> writes:

> See 5th plot of this demo
>
> http://gnuplot.sourceforge.net/demo_svg_5.0/datastrings.html

Thank you!

The code now looks like this:

    http://user.it.uu.se/~embe8573/everest-plot/everest.gpi

Diagrams 1-2:

    http://user.it.uu.se/~embe8573/everest-plot/early.png

    http://user.it.uu.se/~embe8573/everest-plot/late.dat

Questions:

1. How can I have the bars *wider* ...

2. ... so the entire label will always be visible
   above the bar, centered around the bar's mid?

3. How can I don't have to do this:

       set yrange [0.01:33] # hack not to show 0 as labels,
                            # also to have labels within border
                            # obviously ugly to have this hard coded

4. How can I set the colors of the labels to the
   colors of the bars?

-- 
underground experts united
http://user.it.uu.se/~embe8573

Re: [Gnuplot-info] change colors of bars, and add small digits

[Emanuel B. <emb...@st...>]

"Mauricio Galo (Dep. de Cartografia)"
<ga...@fc...> writes:

> You can also use patterns with black and white bars.
> In the link above there are some simple examples:
> with pattern

Thank you, but I'm happy with:

    set linetype 1 linecolor rgb "gray"
    set linetype 2 linecolor rgb "black"

> different width [...]
>
> http://www2.fct.unesp.br/docentes/carto/galo/web/gnuplot/gnu_exemplos5.htm

If you mean either of

    set boxwidth 1.0 relative
    set boxwidth 1.5

then neither will do - they make the bars expand
"inward" and overlap long before they get wide enough!

So the four issues I have remain:

    1. How can I have the bars *wider* ...

    2. ... so the entire label will always be visible
    above the bar, centered around the bar's mid?

    3. How can I don't have to do this:

        set yrange [0.01:33] # hack not to show 0 as labels,
                             # also to have labels within border
                             # obviously ugly to have this hard coded

    4. How can I set the colors of the labels to the
    colors of the bars?

-- 
underground experts united
http://user.it.uu.se/~embe8573