I have been induced by the name v3, that's why I /thought it was a vector./
/But after a night, having no answer to my question, I tried to think
deeper of what it could be ?
/
/And just before reading the list I had came to conclusion it could only
be a scalar, which I read in the mail a certain time after./
/An integer has a quantity then it can be plot as a quantity like near a
vector, a point ?
/
/the scalar is 60 in this case, then sixty from zero could be a line...
/
/Cheers/
/Henri/
Le 06/02/2017 à 10:25, John Cremona a écrit :
Not every object in Sage has a plot() method. As the error message
says, integers do not have a plot() method. Can you think of a
sensible way of plotting a single integer? Perhaps there is, but
no-one has thought of it yet.
On 6 February 2017 at 07:10, Henri Girard <henri.gir...@gmail.com> wrote:
Yes, I didn't know exactly the name, but thinking about it I came to the
same conclusion, thank. But my concern is why doesn't it display and gives
an error ?
Le 06/02/2017 à 03:03, Jorge Garcia a écrit :
V3 is a scalar = -60...
On Feb 5, 2017 5:38 PM, "Henri Girard" <henri.gir...@gmail.com> wrote:
Thanks
Le 05/02/2017 à 23:32, John Cremona a écrit :
V3 is not a vector!
On 5 Feb 2017 21:42, "Henri Girard" <henri.gir...@gmail.com> wrote:
The third vector is an error, is it a bug ?
v1=vector([3,4,-6])
v2=vector([-4,3,10])
v3=v1.dot_product(v2)
p1=v1.plot(color='red')
p2=v2.plot(color='green')
p3=v3.plot()
---------------------------------------------------------------------------
AttributeError Traceback (most recent call
last)
<ipython-input-22-73b179d3596d> in <module>()
4 p1=v1.plot(color='red')
5 p2=v2.plot(color='green')
----> 6 p3=v3.plot()
/home/pi/git/sage/src/sage/structure/element.pyx in
sage.structure.element.Element.__getattr__
(/home/pi/git/sage/src/build/cythonized/sage/structure/element.c:4254)()
457 AttributeError:
'LeftZeroSemigroup_with_category.element_class' object has no attribute
'blah_blah'
458 """
--> 459 return self.getattr_from_category(name)
460
461 cdef getattr_from_category(self, name):
/home/pi/git/sage/src/sage/structure/element.pyx in
sage.structure.element.Element.getattr_from_category
(/home/pi/git/sage/src/build/cythonized/sage/structure/element.c:4363)()
470 else:
471 cls = P._abstract_element_class
--> 472 return getattr_from_other_class(self, cls, name)
473
474 def __dir__(self):
/home/pi/git/sage/src/sage/structure/misc.pyx in
sage.structure.misc.getattr_from_other_class
(/home/pi/git/sage/src/build/cythonized/sage/structure/misc.c:1928)()
298 dummy_error_message.cls = type(self)
299 dummy_error_message.name = name
--> 300 raise dummy_attribute_error
301 attribute = <object>attr
302 # Check for a descriptor (__get__ in Python)
AttributeError: 'sage.rings.integer.Integer' object has no attribute
'plot'
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