#2100: sensible defaults for aspect ratio
-------------------------------------------------------+--------------------
Reporter: jason | Owner: jason
Type: enhancement | Status:
needs_review
Priority: major | Milestone:
sage-4.6.2
Component: graphics | Keywords:
Author: Jason Grout, Karl-Dieter Crisman | Upstream: N/A
Reviewer: Andrey Novoseltsev, Karl-Dieter Crisman | Merged:
Work_issues: unify option names |
-------------------------------------------------------+--------------------
Comment(by kcrisman):
Here is some code that looks less good with this patch than before.
{{{
def my_eulers_method_plot(a_function,x0,y0,h,x1):
n=int((1.0)*(x1-x0)/h)
x00=x0; y00=y0
x01=x0; y01=y0
P=point((x00,y00),rgbcolor=hue(1)) # red
Q=Graphics() # default is blue
f(x,y)=a_function(x,y) # Note that a_function should be a callable
function of x, then y
for i in range(n+1):
y01 = y00+h*f(x00,y00)
x01 = x00+h
P=P+point((x01,y01),rgbcolor=hue(1))
Q=Q+line([(x00,y00),(x01,y01)])
x00=x01
y00=y01
return(P+Q)
var('x,y')
def euler_logistic_plot(parameter,y_start,end=15,step=1):
function(x,y)=parameter*y*(1-y)
my_eulers_method_plot(function,0,y_start,step,end).show(ymin=0)
euler_logistic_plot(2,.7,97,.8)
}}}
I'll try to attach before and after.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/2100#comment:61>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
