class_docstr: A skew transformation along the y-axis is equivalent to the matrix [1
  tan(a) 0 1 0 0], which has the effect of skewing Y coordinates by angle a.
class_docstr_tok: ["A","skew","transformation","along","the","y-axis","is","equivalent","to","the","matrix","[","1","tan","(","a",")","0","1","0","0","]",",","which","has","the","effect","of","skewing","Y","coordinates","by","angle","a","."]
code: def __init__(self, angle):
      Matrix.__init__(self)
      self._angle = angle
      angle = math.pi * angle / 180.0
      self._matrix[...] = [
          [1, 0, 0],
          [math.tan(angle), 1, 0],
          [0, 0, 1],
      ]
  
imports: import re
  import math
  import numpy
label_desc: Use image node_id 1 to create a new SkewY object from inherited base classes: Matrix with example: obj = SkewY(angle)