class_docstr: Model for Von Mises mixture distribution with fixed variance
  on a two-dimensional sphere
class_docstr_tok: ["Model","for","Von","Mises","mixture","distribution","with","fixed","variance","on","a","two-dimensional","sphere"]
docstr: Calculate and set weights from `z`
  
  Parameters
  ----------
  z: array of shape(self.k)
docstr_tok: ["Calculate","and","set","weights","from","`","z","`","Parameters","--","--","--","--","--","z",":","array","of","shape","(","self.k",")"]
code: def estimate_weights(self, z):
      """Calculate and set weights from `z`
  
      Parameters
      ----------
      z: array of shape(self.k)
      """
      self.weights = np.sum(z, 0) / z.sum()
  
imports: from warnings import warn
  import numpy
label_desc: Use image node_id 8 for calling the VonMisesMixture obj's underlying member method code with example usage: obj.estimate_weights(z) without return types