配件从这段代码,我可以用“out.best_fit”,我想现在要做的打印最终契合,是画出每个峰各个高斯曲线,而不是将它们全部合并成一条曲线。情节单个峰与Python-lmfit
from pylab import *
from lmfit import minimize, Parameters, report_errors
from lmfit.models import GaussianModel, LinearModel, SkewedGaussianModel
from scipy.interpolate import interp1d
from numpy import *
fit_data = interp1d(x_data, y_data)
mod = LinearModel()
pars = mod.make_params(slope=0.0, intercept=0.0)
pars['slope'].set(vary=False)
pars['intercept'].set(vary=False)
x_peak = [278.35, 334.6, 375]
y_peak = [fit_data(x) for x in x_peak]
i = 0
for x,y in zip(x_peak, y_peak):
sigma = 1.0
A = y*sqrt(2.0*pi)*sigma
prefix = 'g' + str(i) + '_'
peak = GaussianModel(prefix=prefix)
pars.update(peak.make_params(center=x, sigma=1.0, amplitude=A))
pars[prefix+'center'].set(min=x-20.0, max=x+20.0)
pars[prefix+'amplitude'].set(min=0.0)
mod = mod + peak
i += 1
out = mod.fit(y_data, pars, x=x_data)
plt.figure(1)
plt.plot(x_data, y_data)
plt.figure(1)
plt.plot(x_data, out.best_fit, '--')
情节全球契合:
什么是'x_data'和'y_data'? – Cleb
对不起,它们只是x和y数据的两个列表。 – TMR
难道你不能从'out'得到拟合参数吗?它们必须存储在某个地方以计算拟合的y值。然后,如果您设法提取拟合参数,则可以绘制单个高斯分布。 –