* inclusion of #+RESULTS in a source block
@ 2014-06-16 14:38 Federico Beffa
2014-06-16 16:53 ` Charles Berry
0 siblings, 1 reply; 2+ messages in thread
From: Federico Beffa @ 2014-06-16 14:38 UTC (permalink / raw)
To: emacs-orgmode
[-- Attachment #1: Type: text/plain, Size: 927 bytes --]
Suppose you want to use a program such as Sympy or Maxima to find
the analytic solution of a complicated equation. After this you want
to make use of that solution for numerical evaluation of various
cases.
Is it safe to use the analytic results (without using a session) in the
following way, or is there a better way?
#+NAME: analytic-sol
#+BEGIN_SRC python :session none :results raw
from sympy import symbols, sqrt, python, solve
x, a = symbols("x, a")
y = solve( x**2 + 2*a*x + 1, x)
return python(y)
#+END_SRC
#+NAME: numeric-sol
#+BEGIN_SRC python :session none
from sympy import Symbol, sqrt, lambdify
import numpy as np
#+RESULTS: analytic-sol
a = Symbol('a')
e = [-a - sqrt(a**2 - 1), -a + sqrt(a**2 - 1)]
f = lambdify(a, e[1], "numpy")
t = np.r_[1:4]
return f(t)
#+END_SRC
#+RESULTS:
| -1 | -0.26794919 | -0.17157288 |
Regards,
Fede
[-- Attachment #2: Type: text/html, Size: 1164 bytes --]
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: inclusion of #+RESULTS in a source block
2014-06-16 14:38 inclusion of #+RESULTS in a source block Federico Beffa
@ 2014-06-16 16:53 ` Charles Berry
0 siblings, 0 replies; 2+ messages in thread
From: Charles Berry @ 2014-06-16 16:53 UTC (permalink / raw)
To: emacs-orgmode
Federico Beffa <beffa <at> ieee.org> writes:
>
>
>
> Suppose you want to use a program such as Sympy or Maxima to find
> the analytic solution of a complicated equation. After this you
> want to make use of that solution for numerical evaluation of
> various cases.
See
http://orgmode.org/manual/Noweb-reference-syntax.html#Noweb-reference-syntax
You want something like
#+BEGIN_SRC python :noweb yes
<<analytic-sol()>>
#+END_SRC
To use in more than one src-block use the `:cache yes' header for
`analytic-sol'
HTH,
Chuck
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2014-06-16 16:54 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2014-06-16 14:38 inclusion of #+RESULTS in a source block Federico Beffa
2014-06-16 16:53 ` Charles Berry
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).