Re: heat map ?

[Valerio S. <val...@gm...>]

Help everyone,
following Ethan advice, i've tried to simply the .gp file. Now it looks
like this:

set term pdfcairo
set output "macrobench_latency_heat.pdf"
load "../styles.inc"
set size 0.9,1.0
set lmargin 20
set rmargin 20
set palette defined (0.0 "white", 1.0 "blue")
set tic scale 0
set cblabel "Latency (ms)"
set datafile separator comma
plot\
 "heatmap_latencies_handmade.txt" matrix rowheaders columnheaders u 1:2:3
with image notable

Now, how do I show you the result ? I've uploaded it here
http://postimg.org/image/sssos6q9j/full/
but here, it shows it something that is completely different from the PDF
that I see, in which the cells are smoothed/interpolated...for some reason..

Ideas?

--
Valerio


On Fri, Apr 22, 2016 at 5:50 PM, sfeam <sf...@us...> wrote:

> On Friday, 22 April 2016 09:46:50 AM Valerio Schiavoni wrote:
> > Hello,
> > i've been trying to make an heat map that looks like the one in this blog
> > entry
> > https://learnr.wordpress.com/2010/01/26/ggplot2-quick-heatmap-plotting/
> > Unfortunately they don't use gnuplot.
> >
> > My attempt so far produces a poor result, i think because I'm not using
> the
> > right approach.
> >
> > Here's my current version:
> >
> > set term pdfcairo
> > set output "latency_heat.pdf"
> > load "../styles.inc"
> > set size 0.9,1.0
> > set lmargin 15
> > set rmargin 20
> > set pm3d #interpolate 0,100
> > set view map scale 1
> > set style func pm3d
> > set style data pm3d;
> > set dgrid3d
> > set pal defined ( 0 0 0 0, 1 1 1 1 )
> > set tic scale 0
> > set cblabel "Latency (ms)"
> > set datafile separator comma
> > splot "heatmap_latencies.txt" matrix rowheaders columnheaders using 1:2:3
> > with image title ""
> >
> > Where the input file is:
> >
> > ,One,Two,Three
> > a,675.0, 1177.0, 1975.0
> > b,744.0, 13908.0, 20191.0
> > c,1767.0, 4374.0  ,5165.0
> > d,678.0, 1101.0  ,1888.0
> > e, 771.0, 13842.0 ,18648.0
> > f, 1372.0, 4264.0  ,5187.0
> > g,753.0 , 1541.0  ,1729.0
> > h,791.0 , 5832.0  ,20528.0
> > i,1310.0, 1225.0  ,5436.0
> > l,747.0,  1516.0  ,2118.0
> > m,825.0 , 16719.0 ,0
> > n,1341.0, 4427.0 ,9040.0
> >
> >
> > Any idea on how to improve this ?
>
> Most of those commands are irrelevant to what you want.
> This is not a 3D surface, so you don't need "splot".
> The colors are categorical, not smoothed, so you don't want pm3d.
> Disregarding labels, it is sufficient to say
>
>   set datafile separator comma
>   set palette defined (0.0 "white", 1.0 "blue")
>   plot "heatmap_latencies.txt" matrix rowheaders columnheaders with image
>
>
>         Ethan
>