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# sfepy.fem.integrals module¶

class sfepy.fem.integrals.Integral(name, kind='v', order=1, coors=None, weights=None)[source]

get_key()[source]

Get the key string corresponding to the integral kind and order, that can be used to distinguish various cached data evaluated using the integral.

get_qp(geometry)[source]

Get quadrature point coordinates and corresponding weights for given geometry. For built-in quadratures, the integration order is given by self.order.

Parameters : geometry : str The geometry key describing the integration domain, see the keys of sfepy.fem.quadratures.quadrature_tables. coors : array The coordinates of quadrature points. weights: array : The quadrature weights.
integrate(function, order=1, geometry='1_2')[source]

Integrate numerically a given scalar function.

Parameters : function : callable(coors) The function of space coordinates to integrate. order : int, optional The integration order. For tensor product geometries, this is the 1D (line) order. geometry : str The geometry key describing the integration domain. Default is ‘1_2’, i.e. a line integral in [0, 1]. For other values see the keys of sfepy.fem.quadratures.quadrature_tables. val : float The value of the integral.
class sfepy.fem.integrals.Integrals(objs=None, **kwargs)[source]

Container for instances of Integral.

static from_conf(conf)[source]
get(name, kind='v')[source]

Return existing or new integral.

Parameters : name : str The name can either be a non-negative integer, a string representation of a non-negative integer (the integral order) or ‘a’ (automatic order) or a string beginning with ‘i’ (existing custom integral name).