http://linda.karlov.mff.cuni.cz/wiki/ 2026-05-15T23:00:45+00:00 http://linda.karlov.mff.cuni.cz/wiki/ http://linda.karlov.mff.cuni.cz/wiki/lib/tpl/dokuwiki/images/favicon.ico text/html 2021-10-25T08:53:30+00:00 Anonymous (anonymous@undisclosed.example.com) http://linda.karlov.mff.cuni.cz/wiki/python:animation?rev=1635152010&do=diff Komplet prekresleni (cla(); plot(...)): #!/usr/bin/python from pylab import * import time figure() show(False) while True: y = np.random.normal(size=10000) t = time.time() cla() plot(y) draw() print time.time()-t Modifikace existujuceho objektu ( text/html 2021-10-25T08:53:30+00:00 Anonymous (anonymous@undisclosed.example.com) http://linda.karlov.mff.cuni.cz/wiki/python:def?rev=1635152010&do=diff [data file] #!/usr/bin/python from pylab import * y, x = loadtxt("FeAl28-sample1-2.XLS",usecols=(2,3),unpack=True)[:,5:-2] x = -x plot(x,y) data = array(ginput(2)) a,b = polyfit(data[:,0], data[:,1], 1) plot(x,a*(x+b/a)) figure() plot(x+b/a-y/a, y) show() text/html 2021-10-25T08:53:30+00:00 Anonymous (anonymous@undisclosed.example.com) http://linda.karlov.mff.cuni.cz/wiki/python:index?rev=1635152010&do=diff Python (Linux ve fyzikální laboratoři) Animation 25. 11. Zdrojaky * <http://matplotlib.org/examples/animation/index.html> * <http://jakevdp.github.io/blog/2012/08/18/matplotlib-animation-tutorial/> * <http://jakevdp.github.io/blog/2012/09/05/quantum-python/> * <http://jakevdp.github.io/blog/2013/05/19/a-javascript-viewer-for-matplotlib-animations/> * <http://jakevdp.github.io/blog/2013/05/12/embedding-matplotlib-animations/> Interactive 18. 11. Odpocitanie elastickej deformacie… text/html 2021-10-25T08:53:30+00:00 Anonymous (anonymous@undisclosed.example.com) http://linda.karlov.mff.cuni.cz/wiki/python:plot_wireframe?rev=1635152010&do=diff import matplotlib.pyplot as plt import numpy as np from mpl_toolkits.mplot3d.axes3d import Axes3D x = np.linspace(-5, 5, 10) y = np.array([-5,-4,-3,-2,1,4,7]) #y = np.linspace(-5, 5, 20)**3 ## 1. #x,y = np.meshgrid(x,y) ## 2. #x = x[:,np.newaxis] #y = y[np.newaxis] ## 3. x,y = np.mgrid[-5:5:10j, -5:5:20j] ## 4. #x,y = np.ogrid[-5:5:10j, -5:5:20j] z = np.sin(np.hypot(x,y)) print x.shape print y.shape print z.shape ax = plt.gca(projection='3d') ax.plot_wireframe(x, y, z) plt.show() text/html 2021-10-25T08:53:30+00:00 Anonymous (anonymous@undisclosed.example.com) http://linda.karlov.mff.cuni.cz/wiki/python:plot_wireframe2?rev=1635152010&do=diff from pylab import * from mpl_toolkits.mplot3d.axes3d import Axes3D data = loadtxt("T3Pt-5_5-VISB.dat0x") x = data[0,1:] y = data[1::10,0] z = data[1::10,1:] idx = argsort(x) x = x[idx] z = z[:,idx] ax = gca(projection='3d') ax.plot_wireframe(x[newaxis,:], y[:,newaxis], z) plt.show()