Python visual scatter plot. Histogram, Contour

Scatter chart

ImportMatplotlib.pyplot as PltImportNumPy as NP#N pointsn = 1024#The average is 0, and the variance is 1.X = Np.random.normal (0,1, N) Y= Np.random.normal (0,1, N)#Determine colorT =np.arctan2 (y,x) plt.scatter (x,y,s=75,c=t,alpha=0.5)#Plt.scatter (Np.arange (5), Np.arange (5))Plt.xlim (-1.5,1.5) Plt.ylim (-1.5,1.5)#Hide all the ticksPlt.xticks (()) Plt.yticks (()) plt.show ()

Bar chart:

ImportMatplotlib.pyplot as PltImportNumPy as NP#12 Bar ChartsN=12X= Np.arange (n)#X will generate 0 to oneY1 = (1-x/float (n)) *np.random.uniform (0.5, 1.0, N)#randomly randomly generate numbers from 0.5 to 1Y2 = (1-x/float (n)) *np.random.uniform (0.5, 1.0, N) plt.bar (X,+y1,facecolor='#9999ff', edgecolor=' White') Plt.bar (X,-y2,facecolor='#ff9999', edgecolor=' White')#zip is to give the values in X,y1 to X and Y, respectively.#Plt.text (x position, y position, value) forX, yinchZip (x,y1):#ha:horizontal Alignment AlignmentPlt.text (x,y+0.05,'%.2f'% y,ha='Center', va='Bottom')     forX, yinchZip (x,y2):#ha:horizontal Alignment AlignmentPlt.text (x,-y-0.05,'-%.2f'% y,ha='Center', va='Top') Plt.xlim (-.5, N) plt.xticks (()) Plt.ylim (-1.25,1.25) Plt.yticks (()) plt.show ()

Contour

ImportMatplotlib.pyplot as PltImportNumPy as NP#calculate height by x, ydeff (x, y):return(1-x/2+x**5+y**3) *np.exp (-x**2-y**2) n=256x=np.linspace ( -3,3, N) y=np.linspace ( -3,3, N)#bind x, y to the input values of the gridX, y =Np.meshgrid (x, y)#Use plt.contourf to filling contours#x, Y and value for (x, y) point#Contour for Grids#8 delegates divided into 10 sections#0 divided into 2 sections#Plt.cm.cool for cold tones, plt.cm.hot for warm tones, Plt.cm.spectral,plt.cm.hsv,plt.cm.oceanPlt.contourf (x,y,f (x, y), 8,ALPHA=0.75,CMAP=PLT.CM.HSV)#Paint the Color#Use plt.contour to add Contounlines#draw lines, contour lines for contoursC = Plt.contour (x,y,f (x, y), 8,colors='Black', linwidth=.5)#adding labelPlt.clabel (c,inline=true,fontsize=10) Plt.xticks (()) Plt.yticks (()) plt.show ()

This knowledge is learned in the mo bored python

Python visual scatter plot. Histogram, Contour