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exercises:2014_uzh_molsim:gnuplot [2014/05/01 07:54]
talirz
exercises:2014_uzh_molsim:gnuplot [2014/05/06 22:18] (current)
talirz Added hint about scripting
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-Finally, we want to use Gnuplot's fitting functionality.+Gnuplot ​is not just a plotting utility, it can also perform fits.
 Say, we have a data set ''​data.dat'',​ which contains $x$ in the first column and some computed $f(x)$ in the second column. Say, we have a data set ''​data.dat'',​ which contains $x$ in the first column and some computed $f(x)$ in the second column.
 We want to fit a function $f(x)=ax^2$ to this data set. In Gnuplot, this would be achieved by: We want to fit a function $f(x)=ax^2$ to this data set. In Gnuplot, this would be achieved by:
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 </​note>​ </​note>​
  
 +Finally, once you have figured out which commands you need to create the plot you want, it is a good idea to write these commands to a file, say ''​script.gp''​. This has the advantage that gnuplot can re-create your graph in an instant. On the bash terminal type:
 +<code bash>
 +gnuplot script.gp ​  # let gnuplot perform the commands in '​script.gp'​
 +gnuplot ​            # alternative:​ start gnuplot
 +load '​script.gp' ​   #              and load script from within gnuplot
 +</​code>​
 +This makes it very quick and easy to change details in the plot at a later point in time.
 +Proficient gnuplot users will often start by writing the file, run it through gnuplot and then adjust the remaining details.
  
exercises/2014_uzh_molsim/gnuplot.txt ยท Last modified: 2014/05/06 22:18 by talirz