(xdata, ydata, 'r*'); hold on plot(xdata,fit_y,'b-'); xlabel('t'); ylabel('y'); legend('观测数据点','拟合曲线', 'Location', 'northwest'); saveas(gcf,sprintf('Logistic曲线.jpg'),'bmp'); %% Logistic函数 % y=A/(1+B*exp(-C*t
Plot Exponential Function Copy Code Copy Command Plot y=ex/2 for x values in the range [−2,10]. Get X = -2:0.5:10; Y = exp(X/2); plot(X,Y)Input Arguments collapse all X— Input array scalar | vector | matrix | multidimensional array | table | timetable Input array, speci...
Plot Exponential Function Copy Code Copy Command Plot y=ex/2 for x values in the range [−2,10]. Get X = -2:0.5:10; Y = exp(X/2); plot(X,Y)Input Arguments collapse all X— Input array scalar | vector | matrix | multidimensional array | table | timetable Input array, speci...
Calculate with arrays that have more rows than fit in memory. C/C++ Code Generation Generate C and C++ code using MATLAB® Coder™. GPU Code Generation Generate CUDA® code for NVIDIA® GPUs using GPU Coder™. Thread-Based Environment Run code in the background using MATLAB® back...
Fit Kernel Distribution to Data Copy Code Copy Command Load patient weights from the data file patients.mat. Get load patients x = Weight; Create a kernel distribution object by fitting it to the data. Use the Epanechnikov kernel function. Get pd = fitdist(x,'Kernel','Kernel','epanechn...
Input Arguments collapse all Input array, specified as a scalar, vector, matrix, multidimensional array, table, or timetable. Data Types:single|double|table|timetable Complex Number Support:Yes Output Arguments collapse all Exponential values, returned as a scalar, vector, matrix, multidimensional arr...
To check the quality of the fit, plot the data and the resulting fitted response curve. Create the response curve from the returned parameters of your model. A = bestx(1); lambda = bestx(2); yfit = A*exp(-lambda*tdata); plot(tdata,ydata,'*'); holdonplot(tdata,yfit,'r'); ...
选择拟合类型fit type 和拟合的方式,通过fit options 限定拟合的起始点参数和参数的上下限。 工具箱提供的拟合类型: 参数详细介绍: Custom Equations:用户自定义的函数类型 Exponential:指数逼近,有两种类型 a*exp(b*x)、a*exp(b*x)+c*exp(d*x);
Input Arguments collapse all Input array, specified as a scalar, vector, matrix, multidimensional array, table, or timetable. Data Types:single|double|table|timetable Complex Number Support:Yes Output Arguments collapse all Exponential values, returned as a scalar, vector, matrix, multidimensional arr...
There is a different function that is sometimes called the exponential integral: the Cauchy principal value integral Ei(x)=x∫−∞et/tdt, which, for positive realx, is related toexpintas limδ→0+E1(−x+i0)=−Ei(x)−iπ. ...