class_docstr: Mixin for min and max methods.
  
  These are not implemented for dia_matrix, hence the separate class.
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docstr: Return indices of minimum elements along an axis.
  
  Implicit zero elements are also taken into account. If there are
  several minimum values, the index of the first occurrence is returned.
  
  Parameters
  ----------
  axis : {-2, -1, 0, 1, None}, optional
      Axis along which the argmin is computed. If None (default), index
      of the minimum element in the flatten data is returned.
  out : None, optional
      This argument is in the signature *solely* for NumPy
      compatibility reasons. Do not pass in anything except for
      the default value, as this argument is not used.
  
  Returns
  -------
   ind : np.matrix or int
      Indices of minimum elements. If matrix, its size along `axis` is 1.
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code: def argmin(self, axis=None, out=None):
      """Return indices of minimum elements along an axis.
  
      Implicit zero elements are also taken into account. If there are
      several minimum values, the index of the first occurrence is returned.
  
      Parameters
      ----------
      axis : {-2, -1, 0, 1, None}, optional
          Axis along which the argmin is computed. If None (default), index
          of the minimum element in the flatten data is returned.
      out : None, optional
          This argument is in the signature *solely* for NumPy
          compatibility reasons. Do not pass in anything except for
          the default value, as this argument is not used.
  
      Returns
      -------
       ind : np.matrix or int
          Indices of minimum elements. If matrix, its size along `axis` is 1.
      """
      return self._arg_min_or_max(axis, out, np.argmin, np.less)
  
imports: from __future__ import division, print_function, absolute_import
  import numpy
  from .base import spmatrix, _ufuncs_with_fixed_point_at_zero
  from .sputils import isscalarlike, validateaxis, matrix
label_desc: Use image node_id 8 for calling the _minmax_mixin obj's underlying member method code with example usage: obj.argmin(axis, out) and returns: self