![]() There are a couple of corner cases that are handled here. Here is a macro that does that (adapted from a solution at ). Then all those strings should be joined by spaces. it passes listp) should be evaluated and converted to a string. ![]() For this DSL, I want to treat every symbol in the form as if it should be turned into a string, anything that is a string should be quoted, and anything that is in parentheses (i.e. Starting with a simple form inside the macro, I wanted to convert (set output "test.png") to "set output \"test.png\"". It has some sticky and tricky points, and it is not obvious it will support all the features of gnuplot, but I learned a lot doing it that I will share here. In the following code, I will develop the gnuplot macro. Instead we transform them to the gnuplot code. For starters they just look lispy, I don't actually use them as lisp at all. gnuplot has to be a macro though because we do not want to evaluate the s-expressions inside as lisp. This retains a lot of benefits of programming in lisp. The output of that program is the gnuplot commands that were generated for making the plot. The most annoying part of this is in the plot function we have to escape all the parentheses and commas, but otherwise it looks pretty lispy. c ( 'replot "tmp.dat" u 1:3' w lp ) fig1. a ( 'replot y(x)' )įrom PyGnuplot import gp import numpy as np X = np. fit2d ( data, func, via = 'a,b,c', limit = 1e-9 ) # sending in the data the function used to fit and the variables that are to be found. sin ( x ) data = func = 'y(x) = a b*cos(x c)' # define a fitting function here. Wait: define a waiting time in sec for gnuplot to finish its fitting default: 1sec import numpy as np f1 = gp () x = np. Here we gather the fitting info from gnuplotįit(self, data, func=’y(x)=a b*x’, via=’a,b’, limit=1e-9, filename=’tmp.dat’, wait=1)įilename: stores data first into a temporary file default: tmp.dat Quickly Fit a simple 2-D data set and return the fitting results. ![]() It can still be modified by the ‘default_term’ variable: from PyGnuplot import gp fig1 = gp () fig1. ![]() (it reads the GPVAL_TERM value when gnuplot starts up) This script will use the same default terminal that gnuplot used Pdf(filename=’tmp.pdf’, width=14, height=9, fontsize=12, term=’x11’)Ĭreate a pdf file (overwrites existing) pdf ( 'myfile.pdf' )Ĭloses windows,then gnuplot, then the pipe Setup terminal P(filename=’tmp.ps’, width=14, height=9, fontsize=12, term=’x11’)Ĭreate postscript file (overwrites existing) p ( 'myfile.ps' ) Which can be beneficial when the dealing with larger quanities of numbers Sends plot instructions and the data to Gnuplot ![]() Sends plot instructions and the data to Gnuplot plot () Reads the gnuplot return buffer until its empty Timeout is the time to wait for a response a ( 'print pi' ) # returns the value of pi a ( 'print pi print pi' ) # returns 2 times the value of pi Vtype can be used to change the return format This is paricularly handy when using gnuplots fitting features Save arrays into file (filename = ‘tmp.dat’) easily read by Gnuplot s () # creates tmp.dat c ( 'plot "tmp.dat" u 1:2' )Īsks gnuplot: it sends a command to gnuplot and returns its response Pipe a command to gnuplot as if in gnuplot command promt c ( 'plot sin(x)' ) Pi = figure.a("print pi") Functions available with each figure: Using conda conda install -c benschneider pygnuplot Upgrade: pip install -upgrade PyGnuplot Basic Usage: from PyGnuplot import gpįigure1 = gp() # Create a new figure handleįigure2 = gp(r"C:\Program Files\gnuplot\bin\gnuplot.exe") # Can also specify which gnuplot to use ![]()
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