Figure 2
From: Dynamic estimation of specific fluxes in metabolic networks using non-linear dynamic optimization
Example of a second degree B-spline function. A second degree spline function with two internal knots (in yellow), along with the B-spline functions that generate it (in blue, green, red, cyan and pink). In this figure, the B-spline basis functions are already multiplied with their corresponding spline parameter, so the spline function is obtained by summing the 5 basis functions at each point in time.