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phystricks
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Public Member Functions | |
| def | __init__ (self, F, draw_points) |
| def | draw_vectors (self) |
| def | pos_x (self) |
| def | pos_y (self) |
| def | latex_code (self, language=None, pspict=None) |
 Public Member Functions inherited from phystricks.src.ObjectGraph.ObjectGraph | |
| def | __init__ (self, obj) |
| def | draw_edges (self) |
| def | wave (self, dx, dy) |
| def | get_arrow (self, llam) |
| def | get_mark (self, dist, angle=None, text=None, mark_point=None, added_angle=None, position=None, pspict=None) |
| def | put_mark (self, dist=None, angle=None, text="", mark_point=None, added_angle=None, position=None, pspict=None, pspicts=None) |
| put a mark on an object More... | |
| def | add_option (self, opt) |
| def | get_option (opt) |
| def | remove_option (opt) |
| def | merge_options (self, graph) |
| def | conclude_params (self) |
| def | params (self, language, refute=[]) |
| def | bracketAttributesText (self, language, refute=[]) |
| def | action_on_pspict (self, pspict) |
| def | conclude (self, pspict) |
| def | bounding_box (self, pspict=None) |
| def | math_bounding_box (self, pspict) |
| def | latex_code (self, pspict, language=None) |
| Public Member Functions inherited from phystricks.src.BasicGeometricObjects.GeometricVectorField | |
| def | __init__ (self, fx, fy) |
| def | divergence (self) |
| def | graph (self, xvalues=None, yvalues=None, draw_points=None) |
| def | __call__ (self, a, b=None) |
Public Attributes | |
| vector_field | |
| F | |
| draw_points | |
| Public Attributes inherited from phystricks.src.ObjectGraph.ObjectGraph | |
| obj | |
| parameters | |
| wavy | |
| waviness | |
| options | |
| draw_bounding_box | |
| already_computed_BB | |
| already_computed_math_BB | |
| record_add_to_bb | |
| separator_name | |
| in_math_bounding_box | |
| in_bounding_box | |
| added_objects | |
| take_BB | |
| take_math_BB | |
| mark | |
| marque | |
| Public Attributes inherited from phystricks.src.BasicGeometricObjects.GeometricVectorField | |
| fx | |
| fy | |
| vector_field | |
Private Member Functions | |
| def | _math_bounding_box (self, pspict) |
| def | _bounding_box (self, pspict=None) |
the graph object of a vector field INPUT: - ``F`` - a vector field - ``draw_point`` - the list of points on which it has to be drawn Typically, in order to construct such an object we use the function VectorField and then the method GeometricVectorField.graph See the function VectorField and GeometricVectorField.graph for documentation.
| def phystricks.src.BasicGeometricObjects.VectorFieldGraph.__init__ | ( | self, | |
| F, | |||
| draw_points | |||
| ) |
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private |
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private |
| def phystricks.src.BasicGeometricObjects.VectorFieldGraph.draw_vectors | ( | self | ) |
the list of vectors to be drawn
| def phystricks.src.BasicGeometricObjects.VectorFieldGraph.latex_code | ( | self, | |
language = None, |
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pspict = None |
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| ) |
| def phystricks.src.BasicGeometricObjects.VectorFieldGraph.pos_x | ( | self | ) |
return the list of x positions on which there is a drawn vector
The list is sorted
NOTE:
If `self` was created using the optional argument `draw_points`,
then the set of points on which there is a vector
is not equal to the Cartesian product `self.pos_x` times `self.pos_y`
EXAMPLES:
The two lists created in the following example are the same::
sage: from phystricks import *
sage: x,y=var('x,y')
sage: F=VectorField(x,y).graph(xvalues=(x,1,2,3),yvalues=(y,-2,2,3))
sage: [ P.coordinates() for P in F.draw_points ]
['(1.0,-2.0)', '(1.0,0)', '(1.0,2.0)', '(1.5,-2.0)', '(1.5,0)', '(1.5,2.0)', '(2.0,-2.0)', '(2.0,0)', '(2.0,2.0)']
and ::
sage: x,y=var('x,y')
sage: [ (x,y) for x in F.pos_x for y in F.pos_y ]
[(1.0, -2.0), (1.0, 0.0), (1.0, 2.0), (1.5, -2.0), (1.5, 0.0), (1.5, 2.0), (2.0, -2.0), (2.0, 0.0), (2.0, 2.0)]
But in the following, the list is not the list of points::
sage: x,y=var('x,y')
sage: G=VectorField(x,y).graph(draw_points=[Point(1,2),Point(3,4)])
sage: [ (x,y) for x in G.pos_x for y in G.pos_y ]
[(1, 2), (1, 4), (3, 2), (3, 4)]
| def phystricks.src.BasicGeometricObjects.VectorFieldGraph.pos_y | ( | self | ) |
return the list of y positions on which there is a drawn vector See pos_x
| phystricks.src.BasicGeometricObjects.VectorFieldGraph.draw_points |
| phystricks.src.BasicGeometricObjects.VectorFieldGraph.F |
| phystricks.src.BasicGeometricObjects.VectorFieldGraph.vector_field |
1.8.11