packages/vaex-core/vaex/dataframe.py
def std(self, expression, binby=[], limits=None, shape=default_shape, selection=False, delay=False, progress=None):
        """Calculate the standard deviation for the given expression, possible on a grid defined by binby


        >>> df.std("vz")
        110.31773397535071
        >>> df.std("vz", binby=["(x**2+y**2)**0.5"], shape=4)
        array([ 123.57954851,   85.35190177,   61.14345748,   38.0740619 ])

        :param expression: {expression}
        :param binby: {binby}
        :param limits: {limits}
        :param shape: {shape}
        :param selection: {selection}
        :param delay: {delay}
        :param progress: {progress}
        :return: {return_stat_scalar}
        """
        @delayed
        def finish(var):
            return var**0.5
        return self._delay(delay, finish(self.var(expression, binby=binby, limits=limits, shape=shape, selection=selection, delay=True, progress=progress)))
def std(self, expression, binby=[], limits=None, shape=default_shape, selection=False, delay=False, progress=None):
        @delayed
        def finish(var):
            return var**0.5
        return self._delay(delay, finish(self.var(expression, binby=binby, limits=limits, shape=shape, selection=selection, delay=True, progress=progress)))
def std ( self , expression , binby = [ ] , limits = None , shape = default_shape , selection = False , delay = False , progress = None ) : @ delayed def finish ( var ) : return var ** 0.5 return self . _delay ( delay , finish ( self . var ( expression , binby = binby , limits = limits , shape = shape , selection = selection , delay = True , progress = progress ) ) )
Calculate the standard deviation for the given expression, possible on a grid defined by binby


        >>> df.std("vz")
        110.31773397535071
        >>> df.std("vz", binby=["(x**2+y**2)**0.5"], shape=4)
        array([ 123.57954851,   85.35190177,   61.14345748,   38.0740619 ])

        :param expression: {expression}
        :param binby: {binby}
        :param limits: {limits}
        :param shape: {shape}
        :param selection: {selection}
        :param delay: {delay}
        :param progress: {progress}
        :return: {return_stat_scalar}
Calculate the standard deviation for the given expression possible on a grid defined by binby