Draw a curve from the scatter plot in matplotlib in Python?

Question

enter image description here

My Question:

How can i draw a curve though this data, thus describing an equation for this plot..

I generated this scatter plot by following code, but I am not able to figure out how to generate an equation for this data and draw the corresponding curve on this plot simultaneously. Please Help.!

def draw(data,xlabel,ylabel):
    print('length of data : ',len(data))
    x,y = [],[]
    for i in data:
        x.append((i[1]))
        y.append((i[0]))
    plt.scatter(x, y,marker=r'o',color='b')
    plt.xlabel(xlabel)
    plt.ylabel(ylabel)
    plt.show()

Basically I want something like this: enter image description here

lejlot · Accepted Answer · 2014-07-26 18:59:34Z

3

You have to perform a curve fitting procedure, which is called a regression problem in mathematics. In your case it seems that data is more or less exponential, but you can fit arbitrary function through scipy.optimize.curve_fit

http://docs.scipy.org/doc/scipy/reference/generated/scipy.optimize.curve_fit.html

answered Jul 26, 2014 at 18:59

lejlot

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1 Comment

Akash Rana Over a year ago

Thanks a lot found the best..:)

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