Mailman 3 April 2003 - SciPy-User

Traits: Problem with my first example.
by Donald 'Paddy' McCarthy 25 May '03

25 May '03

Hi, I have just found out about traits and tried out the following example: ############ from traits import * class Person ( HasTraits ): __traits__ = { 'name': '', 'age': 9, 'weight': 0.0 } bill = Person() #bill.configure_traits( filename = None, edit = 1, traits = None ) bill.configure_traits( filename = 'xx.save', edit = 1 ) bill.edit_traits() ############# When run (Windows XP, wxwindows), the gui pops up as expected, but when I save my changes the program exits with the following error: C:\Documents and Settings\Paddy\My Documents>python -V Python 2.2.2 C:\Documents and Settings\Paddy\My Documents>python traitScript1.py 09:22:58: Debug: c:\projects\wx\src\msw\app.cpp(439): 'UnregisterClass(canvas)' failed with error 0x00000584 (class still has open windows.). Can you tell me what I am doing wrong? Also, the file of trait values generated is not editable text, is their a reason for this? Thanks., Paddy.

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Re: SciP
by Travis E. Oliphant 30 Apr '03

30 Apr '03

Todd A Pitts wrote: > Travis, > > I got my new linux box and am now installing SciPy. I get the > following error... > > Also, in your installation notes you might add that the > setup_scipy_distutils module comes from f2py. The latest version > installs but fails to add > scipy_distutils.pth to the site-packages directory. A new user > installing SciPy will have to first find and fix this problem before > he can get SciPy running. It is true that distutils is also used by f2py, but I did not think that f2py was the intended source of any needed module of SciPy. I'm not sure how they worked that out. I have checked out SciPy from scratch several times and did not run into this problem. > > -Todd > > tapitts@sadl18818:SciPy-0.2.0_alpha_196.4120$ /usr/local/bin/python2.2 > setup.py build > Traceback (most recent call last): > File "setup.py", line 111, in ? > setup_package() > File "setup.py", line 90, in setup_package > config_list += map(get_separate_package_config,separate_packages) > File "setup.py", line 74, in get_separate_package_config > return get_package_config(name,'') > File "setup.py", line 67, in get_package_config > mod = __import__('setup_'+os.path.basename(name)) > ImportError: No module named setup_scipy_test I suspect that this is due to a packaging error. I always check out the latest CVS tree and cannot vouch for the source-file packages. I'm not sure why, but they always manage to leave out several files. It looks like you may be missing the entire scipy_core directory. I just built a source distribution on my machine and it seemed to include the setup_scipy_test.py file so I'm not sure what's wrong with your source tree. I'll send you what I have in a separate mail. I'm cross-posting this to the scipy-user list to see if anyone else has had similar troubles. -Travis > > A look for modules beginning with setup* gives > > tapitts@sadl18818:src$ find . -name "setup*" > ./python/setup.py > ./python/Tools/idle/setup.py > ./Numeric/setup.cfg > ./Numeric/setup.py > ./Numeric/Packages/FFT/setup.py > ./Numeric/Packages/MA/setup.py > ./Numeric/Packages/Properties/setup.py > ./Numeric/Packages/RNG/setup.py > ./Numeric/Packages/kinds/setup.py > ./gist/setup.py > ./Imaging/setup.py > ./PyOpenGL-2.0.0.44/setup > ./PyOpenGL-2.0.0.44/setup.py > ./ScientificPython/setup.cfg > ./ScientificPython/setup.py > ./SciPy-0.2.0_alpha_196.4120/Lib/gui_thread/setup_gui_thread.py > ./SciPy-0.2.0_alpha_196.4120/Lib/gui_thread/setup_gui_thread.pyc > ./SciPy-0.2.0_alpha_196.4120/Lib/weave/setup_weave.py > ./SciPy-0.2.0_alpha_196.4120/Lib/weave/setup_weave.pyc > ./SciPy-0.2.0_alpha_196.4120/Lib_chaco/chaco/setup_chaco.py > ./SciPy-0.2.0_alpha_196.4120/Lib_chaco/kiva/setup_kiva.py > ./SciPy-0.2.0_alpha_196.4120/Lib_chaco/traits/setup_traits.py > ./SciPy-0.2.0_alpha_196.4120/setup.py > ./F2PY-2.32.225-1419/docs/usersguide/setup_example.py > ./F2PY-2.32.225-1419/other/scipy_distutils/setup_scipy_distutils.py > ./F2PY-2.32.225-1419/other/scipy_distutils/setup.py > ./F2PY-2.32.225-1419/setup.py > ./F2PY-2.32.225-1419/build/lib/scipy_distutils/setup_scipy_distutils.py > ./F2PY-2.32.225-1419/build/lib/scipy_distutils/setup.py > > > I seem to be missing a file. Any hints you might provide? > > -Todd > >

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Aut�nomo com Internet
by Elmer 30 Apr '03

30 Apr '03

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Remember Mother's Day 11th May 2003
by Prince's Flower Shop Pte Ltd 27 Apr '03

27 Apr '03

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PLEASE CONFIRM URGENTLY.
by WILLIAMS OGUNYINKA. 23 Apr '03

23 Apr '03

DATE 22nd APRIL 2003 WILLIAMS OGUNYINKA ESQ LAGOS, THE FEDERAL REPUBLIC OF NIGERIA. HELLO DEAR, I AM BARRISTER WILLIAMS OGUNYINKA, A SOLICITOR AT LAW.I AM THE PERSONAL ATTORNEY TO MR.BUFFET EDMOND, A NATIONAL OF THE UNITED KINGDOM, WHO USED TO WORK WITH SHELL PETROLEUM DEVELOPMENT COMPANY IN THE REPUBLIC OF GABON.ON THE 21st OF APRIL 2000,MY CLIENT, HIS WIFE AND THEIR ONLY DAUGHTER WERE INVOLVED IN A CAR ACCIDENT ALONG SAGBAMA EXPRESS ROAD.ALL OCCUPANTS OF THE VEHICLE UNFORTUNATELY LOST THERE LIVES. SINCE THEN I HAVE MADE SEVERAL ENQUIRIES TO THE PEOPLE I KNOW HERE TO LOCATE ANY OF MY CLIENTS EXTENDED RELATIVES, THIS HAS ALSO PROVED UNSUCCESSFUL. AFTER THESE SEVERAL UNSUCCESSFUL ATTEMPTS,I DECIDED TO TRACK HIS NAME OVER THE INTERNET,TO LOCATE ANY MEMBER OF HIS FAMILY HENCE I CONTACTED YOU TO ASSIST IN RECOVERING THE FUND VALUED AT US$14.9 MILLION LEFT BEHIND BY MY CLIENT BEFORE IT GETS CONFISCATED OR DECLARED UNSERVICEABLE BY THE SECURITY FINANCE FIRM WHERE THIS HUGE AMOUNT WERE DEPOSITED. THE SAID FINANCIAL INSTITUTION HAS ISSUED ME A NOTICE TO PROVIDE THE NEXT OF KIN OR HAVE THE ACCOUNT CONFISCATED WITHIN THE NEXT SIXTY ONE OFFICIAL WORKING DAYS.SINCE I HAVE BEEN UNSUCCESSFUL IN LOCATING THE RELATIVES FOR FOR OVER 2 YEARS NOW I THEREFORE SEEK YOUR CONCENT TO PRESENT YOU AS THE NEXT OF KIN TO THE DECEASED, SO THAT THE PROCEEDS OF THIS ACCOUNT CAN BE PAID TO YOU. ON RECEIPT OF YOUR POSITIVE RESPONSE, WE SHALL THEN DISCUSS THE SHARING RATIO AND MODALITIES FOR TRANSFER.I HAVE ALL NECESSARY INFORMATION AND LEGAL DOCUMENTS NEEDED TO BACK YOU UP FOR CLAIMS ALL I REQUIRE FROM YOU IS YOUR HONEST COOPERATION TO ENABLE US SEE THIS TRANSACTION THROUGH. I GUARANTEE THAT THIS WILL BE EXECUTED UNDER LEGITIMATE ARRANGEMENT THAT WILL PROTECT YOU FROM ANY BREACH OF LAW. PLEASE NOTE THAT I AM PRESENTLY IN LAGOS THE FEDERAL REPUBLIC OF NIGERIA IN PURSUANCE OF THIS SUBJECT MATTER SINCE THE FINANCIAL INSTITUTION IS BASED HERE. BEST REGARDS WILLIAMS OGUNYINKA ESQ

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PLEASE CONFIRM URGENTLY.
by WILLIAMS OGUNYINKA. 23 Apr '03

23 Apr '03

DATE 22nd APRIL 2003 WILLIAMS OGUNYINKA ESQ LAGOS, THE FEDERAL REPUBLIC OF NIGERIA. HELLO DEAR, I AM BARRISTER WILLIAMS OGUNYINKA, A SOLICITOR AT LAW.I AM THE PERSONAL ATTORNEY TO MR.BUFFET EDMOND, A NATIONAL OF THE UNITED KINGDOM, WHO USED TO WORK WITH SHELL PETROLEUM DEVELOPMENT COMPANY IN THE REPUBLIC OF GABON.ON THE 21st OF APRIL 2000,MY CLIENT, HIS WIFE AND THEIR ONLY DAUGHTER WERE INVOLVED IN A CAR ACCIDENT ALONG SAGBAMA EXPRESS ROAD.ALL OCCUPANTS OF THE VEHICLE UNFORTUNATELY LOST THERE LIVES. SINCE THEN I HAVE MADE SEVERAL ENQUIRIES TO THE PEOPLE I KNOW HERE TO LOCATE ANY OF MY CLIENTS EXTENDED RELATIVES, THIS HAS ALSO PROVED UNSUCCESSFUL. AFTER THESE SEVERAL UNSUCCESSFUL ATTEMPTS,I DECIDED TO TRACK HIS NAME OVER THE INTERNET,TO LOCATE ANY MEMBER OF HIS FAMILY HENCE I CONTACTED YOU TO ASSIST IN RECOVERING THE FUND VALUED AT US$14.9 MILLION LEFT BEHIND BY MY CLIENT BEFORE IT GETS CONFISCATED OR DECLARED UNSERVICEABLE BY THE SECURITY FINANCE FIRM WHERE THIS HUGE AMOUNT WERE DEPOSITED. THE SAID FINANCIAL INSTITUTION HAS ISSUED ME A NOTICE TO PROVIDE THE NEXT OF KIN OR HAVE THE ACCOUNT CONFISCATED WITHIN THE NEXT SIXTY ONE OFFICIAL WORKING DAYS.SINCE I HAVE BEEN UNSUCCESSFUL IN LOCATING THE RELATIVES FOR FOR OVER 2 YEARS NOW I THEREFORE SEEK YOUR CONCENT TO PRESENT YOU AS THE NEXT OF KIN TO THE DECEASED, SO THAT THE PROCEEDS OF THIS ACCOUNT CAN BE PAID TO YOU. ON RECEIPT OF YOUR POSITIVE RESPONSE, WE SHALL THEN DISCUSS THE SHARING RATIO AND MODALITIES FOR TRANSFER.I HAVE ALL NECESSARY INFORMATION AND LEGAL DOCUMENTS NEEDED TO BACK YOU UP FOR CLAIMS ALL I REQUIRE FROM YOU IS YOUR HONEST COOPERATION TO ENABLE US SEE THIS TRANSACTION THROUGH. I GUARANTEE THAT THIS WILL BE EXECUTED UNDER LEGITIMATE ARRANGEMENT THAT WILL PROTECT YOU FROM ANY BREACH OF LAW. PLEASE NOTE THAT I AM PRESENTLY IN LAGOS THE FEDERAL REPUBLIC OF NIGERIA IN PURSUANCE OF THIS SUBJECT MATTER SINCE THE FINANCIAL INSTITUTION IS BASED HERE. BEST REGARDS WILLIAMS OGUNYINKA ESQ

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scipy.optimize.leastsq col_deriv strangeness w/ data fit
by John Hunter 21 Apr '03

21 Apr '03

I am using leastsq to do a best fit to a simple exponential function. In my test script, I find that if I use col_deriv=0, I get a different answer than I get if I do a col_deriv=1 with the err func returning the transposed jacobian. When I compare the true parameters with the best fit parameters, the correct answer is with col_deriv=1 but not with col_deriv=0. Am I misusing this parameter or is something amiss? In the data fitting problem, x is the independent variable with parameters parsTrue. I create the data values by assuming they are data = func(pars) + noise Here is the test script that works, to fit the data to where func(pars) is a*exp(alpha*x) + k To get the best fit params, I minimize over pars data - func(pars) ------------------------------------------------------------ from scipy import exp, arange, zeros, Float, ones from RandomArray import normal from scipy.optimize import leastsq parsTrue = 2.0, -.76, 0.1 # a, alpha, k x = arange(0, 4, 0.001) def func(pars): a, alpha, k = pars return a*exp(alpha*x) + k def errfunc(pars): return data - func(pars) #return the error def deriv_errfunc(pars): 'The Jacobian of the errfunc is -Jacobian of the func' a, alpha, k = pars J = zeros( (3,len(x)), Float) # init the Jacobian only once #deriv with respect to a J[0,:] = -exp(alpha*x) #deriv with respect to alpha J[1,:] = -x*a*exp(alpha*x) #deriv with respect to k J[2,:] = -ones((len(x),), Float) # this is indep of k return J # some pseudo data; add some noise data = func(parsTrue) + normal(0.0, 0.1, x.shape) guess = 1.0, -.4, 0.0 # the intial guess of the params best, info, ier, mesg = leastsq(errfunc, guess, full_output=1, Dfun=deriv_errfunc, col_deriv=1, ) print 'true', parsTrue print 'best', best ------------------------------------------------------------ This returns best fit params true (2.0, -0.76000000000000001, 0.10000000000000001) best [ 2.00487303 -0.74859602 0.09035577] However, If I replace the deriv_errfunc with row derivs, manually transposing the jacobian at creation time def deriv_errfunc(pars): 'The Jacobian of the errfunc is -Jacobian of the func' a, alpha, k = pars J = zeros( (len(x),3), Float) # init the Jacobian only once # deriv with respect to a J[:,0] = -exp(alpha*x) # deriv with respect to alpha J[:,1] = -x*a*exp(alpha*x) # deriv with respect to k J[:,2] = -ones((len(x),), Float) return J and best, info, ier, mesg = leastsq(errfunc, guess, full_output=1, Dfun=deriv_errfunc, col_deriv=0, ) The fit is poor, eg, true (2.0, -0.76000000000000001, 0.10000000000000001) best [ 1.13708025 -0.40303463 0.1669024 ] With col_deriv=0 sometimes the solution is found and sometimes not depending on the run, but it is consistently around the values reported above (ie, wrong). With col_deriv=1, though, the solution is always found and is correct. Suggestions? John Hunter

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We'd like to promote your business
by Patrick T 21 Apr '03

21 Apr '03

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Problems with scipy.integrate.ode
by David Linke 19 Apr '03

19 Apr '03

Hi! I am having problems with the set_f_params() method in ode.py. An example showing the use of set_f_params() to supply additional arguments (two or more) to f would be very heplful. I tried a while to get it going but without success. I observed strange behaviour when using a modified function test1 in ode.py to receive additional arguments: def test1(): #def f(t,y): def f(t,y,b): print type(b), b a = Numeric.sin(6*t) return y*y-a+y ode_runner = ode(f) ode_runner.set_integrator('vode') ode_runner.set_initial_value([0.1,0.11,.1]*10) par_b = 0.1, ode_runner.set_f_params(par_b) while ode_runner.successful() and ode_runner.t < 20: y1 = ode_runner.integrate(ode_runner.t+2) print ode_runner.t,y1[:3] Is this the right way to use set_f_params? When I run this example the arguments are passed to f only in the first two calls, as shown here: Python 2.2.2 (#37, Oct 14 2002, 17:02:34) [MSC 32 bit (Intel)] on win32 >>> Integrators available: vode Found integrator vode <type 'tuple'> (0.10000000000000001,) ! 1st call ... 2.0 [-0.1446766 -0.10226142 -0.1446766 ] <type 'tuple'> (0.10000000000000001,) ! 2nd call ... 4.0 [-0.6351882 -0.5874518 -0.6351882] <type 'tuple'> (<NULL>,) ! 3rd call ... 6.0 [-0.93274299 -0.92029838 -0.93274299] <type 'tuple'> (<NULL>,) 8.0 [-1.06178405 -1.05979417 -1.06178405] ... Thank you for any help. David

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IN ANTICIPATION OF YOUR ASSISTANCE.
by Jack Mboma. 17 Apr '03

17 Apr '03

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