Mailman 3 November 2002 - SciPy-User

gplt and multiple windows
by Nils Wagner Nov. 8, 2002

Nov. 8, 2002

Hi, Is it possible to plot curves in two different "windows" using gplt.plot(t,y) ? Nils

2 1

Redirect the output of gplt.plot plt.plot into an eps-file
by Nils Wagner Nov. 8, 2002

Nov. 8, 2002

Hi, How can I redirect the output of both plt.plot(t,l) and gplt.plot(t,y) into an eps-file ? Nils

2 1

Singular points in integrate.odeint
by Nils Wagner Nov. 8, 2002

Nov. 8, 2002

Hi, How can I tackle singular points in integrate.odeint The rhs of my autonomous ODE \dot{y} = f(y)/g(y) becomes singular at certain points y*, that is g(y*) = 0. Any suggestion ? Nils

1 0

Xlib: unexpected async reply (sequence 0x84)!
by Nils Wagner Nov. 7, 2002

Nov. 7, 2002

Hi, I try to visualize the results of odeint using import gui_thread from scipy import plt plt.plot(t,l) However, the program gets stuck with Xlib: unexpected async reply (sequence 0x84)! What is the reason for that ? Nils

3 2

Complex ODE's in scipy
by Nils Wagner Nov. 7, 2002

Nov. 7, 2002

Hi, How can I integrate complex ODE's in scipy ? I guess I have to double the order of the ODE with respect to real and imaginary part. But, Is it also possible to treat it directly in the complex plane ? odeint(func, y0, t, args=(), Dfun=None, col_deriv=0, full_output=0, ml=None, mu=None, rtol=None, atol=None, tcrit=None, h0=0.0, hmax=0.0, hmin=0.0, ixpr=0, mxstep=0, mxhnil=0, mxordn=12, mxords=5, printmessg=0) Integrate a system of ordinary differential equations. Description: Solve a system of ordinary differential equations Using lsoda from the FORTRAN library odepack. Solves the initial value problem for stiff or non-stiff systems of first order ode-s: dy/dt = func(y,t0,...) where y can be a vector. Inputs: func -- func(y,t0,...) computes the derivative of y at t0. y0 -- initial condition on y (can be a vector). t -- a sequence of time points for which to solve for y. The intial value point should be the first element of this sequence. args -- extra arguments to pass to function. Dfun -- the gradient (Jacobian) of func (same input signature as func). col_deriv -- non-zero implies that Dfun defines derivatives down columns (faster), otherwise Dfun should define derivatives across rows. full_output -- non-zero to return a dictionary of optional outputs as the second output. printmessg -- print the convergence message. Nils

1 0

Newbie on plot and grid
by Jean-Baptiste Cazier Nov. 6, 2002

Nov. 6, 2002

Sæl ! I recently discovered scipy which seems to be able to fit my needs: I want to plot 2D contour file correpsonding to a X,Y,Z array However I have RH7.2 ie python 1.5.2 I installed python2-2, numpy rpm packages and the Scipy tarball that I put in /usr/lib/python2-2/site-package ~ $ rpm -qa |grep -i py pygnome-libglade-1.4.1-3 python-devel-1.5.2-35 python2-2.2.1-1 python-1.5.2-35 PyXML-0.6.5-4 pygtk-0.6.8-3 pygtk-libglade-0.6.8-3 rpm-python-4.0.3-1.03 wxPythonGTK-py2.2-2.3.3.1-1 python-numpy-21.0-4 pygnome-1.4.1-3 python-xmlrpc-1.5.0-1 /usr/lib/python2.2/site-packages]# ls Numeric Numeric.pth README gui_thread scipy scipy_base scipy_distutils wxPython I have 2 problems (at least): If I try to get gplt I get plenty of warnings: >>> from scipy import gplt /usr/lib/python2.2/site-packages/scipy_base/__init__.py:97: RuntimeWarning: Python C API version mismatch for module fastumath: This Python has API version 1011, module fastumath has version 1010. import scipy_base.fastumath /usr/lib/python2.2/site-packages/scipy/special/special.py:5: RuntimeWarning: Python C API version mismatch for module cephes: This Python has API version 1011, module cephes has version 1010. from cephes import * /usr/lib/python2.2/site-packages/scipy/special/special.py:10: RuntimeWarning: Python C API version mismatch for module specfun: This Python has API version 1011, module specfun has version 1010. import specfun /usr/lib/python2.2/site-packages/scipy/linalg/lapack.py:13: RuntimeWarning: Python C API version mismatch for module flapack: This Python has API version 1011, module flapack has version 1010. try: import flapack /usr/lib/python2.2/site-packages/scipy/linalg/lapack.py:16: RuntimeWarning: Python C API version mismatch for module clapack: This Python has API version 1011, module clapack has version 1010. import clapack /usr/lib/python2.2/site-packages/scipy/linalg/flinalg.py:13: RuntimeWarning: Python C API version mismatch for module _flinalg: This Python has API version 1011, module _flinalg has version 1010. import _flinalg /usr/lib/python2.2/site-packages/scipy/linalg/basic.py:17: RuntimeWarning: Python C API version mismatch for module calc_lwork: This Python has API version 1011, module calc_lwork has version 1010. import calc_lwork /usr/lib/python2.2/site-packages/scipy/linalg/blas.py:13: RuntimeWarning: Python C API version mismatch for module fblas: This Python has API version 1011, module fblas has version 1010. try: import fblas /usr/lib/python2.2/site-packages/scipy/linalg/blas.py:16: RuntimeWarning: Python C API version mismatch for module cblas: This Python has API version 1011, module cblas has version 1010. import cblas /usr/lib/python2.2/site-packages/scipy/io/__init__.py:20: RuntimeWarning: Python C API version mismatch for module numpyio: This Python has API version 1011, module numpyio has version 1010. from numpyio import packbits, unpackbits, bswap, fread, fwrite, \ /usr/lib/python2.2/site-packages/scipy/stats/rv.py:3: RuntimeWarning: Python C API version mismatch for module rand: This Python has API version 1011, module rand has version 1010. import rand /usr/lib/python2.2/site-packages/scipy/fftpack/fft.py:21: RuntimeWarning: Python C API version mismatch for module fftpack: This Python has API version 1011, module fftpack has version 1010. import Numeric, fftpack, copy /usr/lib/python2.2/site-packages/scipy/optimize/minpack.py:1: RuntimeWarning: Python C API version mismatch for module _minpack: This Python has API version 1011, module _minpack has version 1010. import _minpack /usr/lib/python2.2/site-packages/scipy/optimize/zeros.py:1: RuntimeWarning: Python C API version mismatch for module _zeros: This Python has API version 1011, module _zeros has version 1010. import _zeros /usr/lib/python2.2/site-packages/scipy/integrate/odepack.py:5: RuntimeWarning: Python C API version mismatch for module _odepack: This Python has API version 1011, module _odepack has version 1010. import _odepack /usr/lib/python2.2/site-packages/scipy/integrate/quadpack.py:4: RuntimeWarning: Python C API version mismatch for module _quadpack: This Python has API version 1011, module _quadpack has version 1010. import _quadpack /usr/lib/python2.2/site-packages/scipy/integrate/ode.py:240: RuntimeWarning: Python C API version mismatch for module vode: This Python has API version 1011, module vode has version 1010. import vode as _vode /usr/lib/python2.2/site-packages/scipy/signal/__init__.py:67: RuntimeWarning: Python C API version mismatch for module sigtools: This Python has API version 1011, module sigtools has version 1010. import sigtools /usr/lib/python2.2/site-packages/scipy/signal/bsplines.py:5: RuntimeWarning: Python C API version mismatch for module spline: This Python has API version 1011, module spline has version 1010. from spline import * # C-modules /usr/lib/python2.2/site-packages/scipy/interpolate/fitpack.py:34: RuntimeWarning: Python C API version mismatch for module _fitpack: This Python has API version 1011, module _fitpack has version 1010. import _fitpack /usr/lib/python2.2/site-packages/scipy/xplt/gist.py:7: RuntimeWarning: Python C API version mismatch for module gistC: This Python has API version 1011, module gistC has version 1010. from gistC import * >>> I try to run the following script without any success: >>> # Define function over sparse 20x20 grid >>> x,y = grid[-1:1:20L,-1:1:20L] >>> z = (x+y)*exp(-6.0*(x*x+y*y)) >>> xplt.plot3(x,y,z,shade=1,palette='rainbow') >>> xplt.title3("Sparsely sampled function.") >>> xplt.eps("2d_func") After the first line I get: ~ $ python2 Python 2.2.1 (#1, Apr 9 2002, 13:10:27) [GCC 2.96 20000731 (Red Hat Linux 7.1 2.96-98)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> x,y = grid[-1:1:20L,-1:1:20L] Traceback (most recent call last): File "<stdin>", line 1, in ? NameError: name 'grid' is not defined >>> Which package should I download ? What is wrong ? Any help would be appreciated Takk Kveðja JB -- ----------------------------- Jean-Baptiste.Cazier(a)decode.is Department of Statistics deCODE genetics Sturlugata,8 570 2930 101 Reykjavík

2 1

A job for you !!!
by produced2many2002＠yahoo.com Nov. 6, 2002

Nov. 6, 2002

Hi! We are offering you a possibility to use your free time and make some money over the internet. This is a global business with warranty. As this is a serious business we expect from our candidates the following: - minimum 18 years of age - desire for team work If you are interested you can find more information about this job on Page http://bestbussines4you.5u.com/main.html or http://www.geocities.com/miso_blazevic/online_bussines.html Application is absolutely free and it doesnt obligate you for anything and you can quit whenever you like. This is a simple way for you to familiarize yourself with a job we are offering and to decide if this is for you. Some of our members already make more then $1500 monthly and there is no limit because income isnt fixed and raises with every month depending on how much time you put in. No, you dont have to sell or buy anything. Nobody here is trying to double-cross you. This is a very serious job. I believe you wont be disappointed. I hope we will work together. If you have any questions or the page doesn't work please contact on this address blazevic_m(a)hotmail.com Miso Blazevic You've received this message only once and if this doesn't interest you I apologize and I won't inform you any more.

5 6

[Fwd: About coordinated efforts on scientific software.]
by Nils Wagner Nov. 6, 2002

Nov. 6, 2002

1 0

NEW STOCK PICK: NVHG - LAST PICK UP 300%......................................................................................................................................................................................................... pgwm
by WALL STREET BULLETIN�..46972 Nov. 5, 2002

Nov. 5, 2002

1 0

ODE solver's in scipy
by Nils Wagner Nov. 4, 2002

Nov. 4, 2002

Hi, How can I solve the following ODE in scipy A(t,z) \dot{z} = f(z), z(0) = z_0 where A is a real matrix depending on t and z; \dot denotes derivative with respect to time t. Nils

2 4