Re: [Gnuplot-info] 3D plot of measurement data

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

if you omit the x- and y-tics strings then your data are in a
simple ascii matrix format and may be plotted with

splot 'datafilename' matrix

delete the 1st line, i.e. the line with the x-tics lables, otherwise
'splot' will fail. on a unix-like system and on a windows system
with cygwin library you may use

splot '< tail +1 datafilename' matrix

x- and y-values in the plot are the column and row numbers, resp.
starting from '0'.

(you may 'set table' to convert your matrix (using the above 'splot'
command) into the data format like in the demos.)


Christian Baun wrote:
> 
> Hi,
> 
> I'm looking for a way to plot measurement data of iozone with gnuplot.
> 
> The data has this style.
> 
>         "4"      "8"      "16"     "32"     "64"  
> "64"    1419266  2068710  2198495  2291049  2360570 ...
> "128"   1852885  2137077  1907552  2414195  1779689 
> "256"   1218963  1766143  1391933  2304816  2509077 
> "512"   1450125  2217077  1580337  1610085  2081676 
> "1024"  1416237  2106757  1875193  2011379  2437817 
> "2048"  1603861  1459826  1759561  1841672  1728337  
> "4096"  1454529  1505890  1501415  1710995  1810833
> "8192"  1330492  319961   1582402  1542753  1697480  
> "16384" 1317258  1512262  1578257  1378195  1579478 
> ...
> 
> The first row is the caption of the X-axis.
> The first line is the caption of the Y-axis.
> A perfect output would be like the first image at the iozone-website [1].
> 
> Now, I'm searching for a demo script that does more or less the same. The
> page [2] with the demo scripts for gnuplot version 4.4 has some scripts
> for surfaces and 3D plotting but these scripts always plot a function or
> the data is from this style:
> 
> 0.092386   0.000000  -0.291706
> 0.084399   0.037577  -0.291706
> 0.061819   0.068656  -0.291706
> 0.028549   0.087865  -0.291706
> 0.009657   0.091880  -0.291706
> ...
> 
> But this approach is totally different.
> 
> I'm not sure, if plotting iozone measurement data can be done with
> "splot". I also don't know how to import the captions of the X and Y-axis
> (first row and first line). It's not possible here to work with "set
> xrange" and "set yrange".
> 
> Thanks in advance for any help.
> 
> Best Regards,
>    Christian 
> 
> [1] http://www.iozone.org
> [2] ttp://gnuplot.sourceforge.net/demo_4.4/
> 
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