Re: [Gnuplot-info] problem combining log scale and linear scale on same x axis

[Thomas S. <t.s...@fz...>]

you need to set the xranges for the whole range your x-axis
is covering - including the intervall which is use by "the other"
plot.

if the log. part of the plot should cover 1/4 of the x-axis, then
the linear xrange needs to start from -400.

the log. range then should end at "10**(4*log(200))".

...
set xrange [-400:2000]
set xtics 200,100,2000
...
set log x
set xrange [1:1.6e9]
set xtics 1,10,200


chris1234 wrote:
> 
> Hello,
> 
> i tried to inspire me from this post :"
> http://old.nabble.com/How-to-combine-a-linear-range-and-log-scale-range-in-the-same-X-axis--td31481340.html"
> in order to have a log scale for a range of my data between 1:200 and
> a
> linear scale for a range between 200:2000. I still can't get it, here is
> the
> script i use :
> 
> -----------------------------------------------------------
> set multiplot
> set xrange [200:2000]
> set xtics 200,100,2000
> set style line 1 linecolor rgb "black"
> set key width 1.5 height 1 box linestyle 1
> plot './test_scalCls_Om_0.3_Ol_07.dat' u ($1>=200?$1:0/0):2 w l ti
> "{/Symbol
> W}_{m}=0.3 {/Symbol W}_{/Symbol L}=0.7",\
>  "./test_neutrino_scalCls.dat" u ($1>=200?$1:0/0):2 w l ti "{/Symbol
> W}_{/Symbol n}=0.12",\
> "./test_a_little_quintessence_scalCls.dat" u ($1>=200?$1:0/0):2 w l ti
> "{/Symbol W}_{Q}=0.12",\
> "./wmap_7y.dat" u ($1>=200?$1:0/0):2 w l ti "wmap data";
> set xrange [1:200]
> set log x
> set xtics 1,10
> plot './test_scalCls_Om_0.3_Ol_07.dat' u ($1<=200?$1:0/0):2 w l ti
> "{/Symbol
> W}_{m}=0.3 {/Symbol W}_{/Symbol L}=0.7",\
>  "./test_neutrino_scalCls.dat" u ($1<=200?$1:0/0):2 w l ti "{/Symbol
> W}_{/Symbol n}=0.12",\
> "./test_a_little_quintessence_scalCls.dat" u ($1<=200?$1:0/0):2 w l ti
> "{/Symbol W}_{Q}=0.12",\
> "./wmap_7y.dat" u ($1<=200?$1:0/0):2 w l ti "wmap data";
> unset multiplot
> -------------------------------------------------
> 
> the problem is these two scales are mixing each others, i have only the
> total range from 1 to 2000, and the two plots overlap.
> 
> I tried to plot firstly the log scale ( from 1 to 200) and after the
> linear
> scale ( from 200 to 2000) but it still doesn't work.
> 
> If someone could help me ...
> 
> Regards.
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