Mailman 3 September 2006 - NumPy-Discussion

[Numpy-discussion] re:非财务经理的财务管理-沙盘模拟课程
by "9月28-29日/上海" 27 Sep '06

27 Sep '06

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Re: [Numpy-discussion] (no subject)
by naomi 27 Sep '06

27 Sep '06

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Segfault with 64-bit, ACML, Python 2.5
by Nickolas V Fotopoulos 27 Sep '06

27 Sep '06

Dear numpy pros, I have a problem and I don't know whether it's from local setup intricacies (64-bit Opteron with ACML and Python 2.5) or something in numpy (fresh SVN checkout). I observe the following: >>> import numpy >>> numpy.test() Found 5 tests for numpy.distutils.misc_util Found 3 tests for numpy.lib.getlimits Found 31 tests for numpy.core.numerictypes Found 32 tests for numpy.linalg Found 13 tests for numpy.core.umath Found 4 tests for numpy.core.scalarmath Found 9 tests for numpy.lib.arraysetops Found 42 tests for numpy.lib.type_check Found 166 tests for numpy.core.multiarray Found 3 tests for numpy.fft.helper Found 36 tests for numpy.core.ma Found 1 tests for numpy.lib.ufunclike Found 12 tests for numpy.lib.twodim_base Found 10 tests for numpy.core.defmatrix Found 4 tests for numpy.ctypeslib Found 40 tests for numpy.lib.function_base Found 1 tests for numpy.lib.polynomial Found 8 tests for numpy.core.records Found 26 tests for numpy.core.numeric Found 4 tests for numpy.lib.index_tricks Found 46 tests for numpy.lib.shape_base Found 0 tests for __main__ ........Segmentation fault In gdb: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 46912496134400 (LWP 25798)] VOID_setitem (op=Variable "op" is not available. ) at numpy/core/src/arraytypes.inc.src:522 522 if (res < 0) break; Version information: [nvf@ldas-pcdev1 nvf]$ uname -m x86_64 [nvf@ldas-pcdev1 nvf]$ python Python 2.5 (r25:51908, Sep 26 2006, 19:06:29) [GCC 4.0.2 20051125 (Red Hat 4.0.2-8)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> numpy.__version__ '1.0.dev3219' Any idea what might be wrong? One obvious thing to check was the linear algebra, since ACML is suspect. numpy.linalg.eig worked fine for my simple test. I don't know enough to debug further. Thanks, Nick

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reload and f2py
by George Nurser 26 Sep '06

26 Sep '06

I'm running Python 2.3.5 with recent SVN f2py. Suppose I import an extension I have built with f2py. Then, if I edit the fortran and recompile the extension, I cannot use reload to use the modified version within the same Python session. I believe this is an problem with Python, that reload doesn't work with externally compiled extensions. Is this something that can be changed in future versions of Python, or is it an inherent problem? For editing and recompiling within an ipython session is quite a good way of getting the fortran code to work, leaving aside any problems in doing the f2py interfacing. --George Nurser.

3 2

Default values in scalar constructors
by Francesc Altet 26 Sep '06

26 Sep '06

Hi, Is there any reason why the next works for some types: In [26]: numpy.int32() Out[26]: 0 In [27]: numpy.float64() Out[27]: 0.0 but don't for the next others? In [28]: numpy.int16() --------------------------------------------------------------------------- <type 'exceptions.TypeError'> Traceback (most recent call last) /home/faltet/python.nobackup/numpy/<ipython console> in <module>() <type 'exceptions.TypeError'>: function takes exactly 1 argument (0 given) In [29]: numpy.float32() --------------------------------------------------------------------------- <type 'exceptions.TypeError'> Traceback (most recent call last) /home/faltet/python.nobackup/numpy/<ipython console> in <module>() <type 'exceptions.TypeError'>: function takes exactly 1 argument (0 given) -- >0,0< Francesc Altet http://www.carabos.com/ V V Cárabos Coop. V. Enjoy Data "-"

2 1

typeDict vs sctypeDict
by Francesc Altet 26 Sep '06

26 Sep '06

Hi, I've just noted this: In [12]: numpy.typeNA is numpy.sctypeNA Out[12]: True In [13]: numpy.typeDict is numpy.sctypeDict Out[13]: True Why these aliases? Ara sc* replacing its not-sc-prefix counterparts? I'd like to know this so that I can avoid names that could be deprecated in a future. Cheers, -- >0,0< Francesc Altet http://www.carabos.com/ V V Cárabos Coop. V. Enjoy Data "-"

2 1

numpy/scipy/mpl on Mac OS X with python 2.5 successful compilation
by Rob Hetland 26 Sep '06

26 Sep '06

I successfully compiled numpy/scipy/mpl on my Intel mac (OS X 10.4.7 with gfortran) with the latest Universal MacPython 2.5. Everything went through without a hitch. I've been waiting for this for a while now (between desire for ctypes, and macpython 2.4 readline issues), and I am very happy to have it up and running. Thanks to everyone who makes this happen, -Rob ---- Rob Hetland, Associate Professor Dept. of Oceanography, Texas A&M University http://pong.tamu.edu/~rob phone: 979-458-0096, fax: 979-845-6331

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Re: [Numpy-discussion] numpy1.0rc and matplotlib-0.87.5
by Peter Bienstman 26 Sep '06

26 Sep '06

On Tuesday 26 September 2006 14:24, numpy-discussion-request(a)lists.sourceforge.net wrote: > Are you sure it's matplotlib-0.87.5? > Line 74 in my c:/Python24/Lib/site-packages/matplotlib/numerix/ > is "from numpy import *" > and not "Matrix = matrix" as in your stackdump. > > You can check the site-packages/matplotlib/__init__.py file for the > __version__ variable to make sure. Mine's got: > __version__ = '0.87.5' > __revision__ = '$Revision: 2761 $' > __date__ = '$Date: 2006-09-05 09:37:04 -0400 (Tue, 05 Sep 2006) $' Hmm, turns out deleting the build directory and doing a 'setup.py install' is not enough. When I delete the matplotlib directory from site-packages it does work. Thanks! Peter

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This one is shooting skywards
by accordion 26 Sep '06

26 Sep '06

1 0

numpy1.0rc and matplotlib-0.87.5
by Peter Bienstman 26 Sep '06

26 Sep '06

Hi, Not sure if this is a numpy or a matplotlib issue, but I can't seem to get matplotlib-0.87.5 to work with numpy1.0rc: Python 2.4.3 (#1, Sep 21 2006, 13:06:42) [GCC 4.1.1 (Gentoo 4.1.1)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> from pylab import * Traceback (most recent call last): File "<stdin>", line 1, in ? File "/usr/lib64/python2.4/site-packages/pylab.py", line 1, in ? from matplotlib.pylab import * File "/usr/lib/python2.4/site-packages/matplotlib/pylab.py", line 196, in ? import cm File "/usr/lib/python2.4/site-packages/matplotlib/cm.py", line 5, in ? import colors File "/usr/lib/python2.4/site-packages/matplotlib/colors.py", line 33, in ? from numerix import array, arange, take, put, Float, Int, where, \ File "/usr/lib/python2.4/site-packages/matplotlib/numerix/__init__.py", line 74, in ? Matrix = matrix NameError: name 'matrix' is not defined This is on an AMD64 platform. I tried removing the build directories of both packages, and reinstalling, but that didn't work. I also posted this to the matplotlib list, but got no reply. Thanks! Peter

2 1

[Numpy-discussion] 非财务经理的财务管理-沙盘模拟课程
by "9月28-29日/上海" 26 Sep '06

26 Sep '06

1 0

Numpy RC1 build blows up
by listservs＠mac.com 25 Sep '06

25 Sep '06

I've just tried building RC1 on OSX 10.4 (Intel), and it fails almost immediately. This did not fail in the past with beta5 or from SVN: Osoyoos:~/Development/numpy-1.0rc1 chris$ python setup.py build Running from numpy source directory. F2PY Version 2_3198 blas_opt_info: FOUND: extra_link_args = ['-Wl,-framework', '-Wl,Accelerate'] define_macros = [('NO_ATLAS_INFO', 3)] extra_compile_args = ['-msse3', '-I/System/Library/Frameworks/ vecLib.framework/Headers'] lapack_opt_info: FOUND: extra_link_args = ['-Wl,-framework', '-Wl,Accelerate'] define_macros = [('NO_ATLAS_INFO', 3)] extra_compile_args = ['-msse3'] running build running config_fc running build_src building py_modules sources creating build creating build/src.darwin-8.7.1-i386-2.4 creating build/src.darwin-8.7.1-i386-2.4/numpy creating build/src.darwin-8.7.1-i386-2.4/numpy/distutils building extension "numpy.core.multiarray" sources creating build/src.darwin-8.7.1-i386-2.4/numpy/core Generating build/src.darwin-8.7.1-i386-2.4/numpy/core/config.h customize NAGFCompiler customize AbsoftFCompiler customize IbmFCompiler Could not locate executable g77 Could not locate executable f77 Could not locate executable f95 customize GnuFCompiler customize Gnu95FCompiler customize Gnu95FCompiler customize Gnu95FCompiler using config C compiler: gcc -fno-strict-aliasing -Wno-long-double -no-cpp-precomp -mno-fused-madd -fPIC -fno-common -dynamic -DNDEBUG -g -O3 -Wall - Wstrict-prototypes compile options: '-I/Library/Frameworks/Python.framework/Versions/2.4/ include/python2.4 -Inumpy/core/src -Inumpy/core/include -I/Library/ Frameworks/Python.framework/Versions/2.4/include/python2.4 -c' gcc: _configtest.c gcc: installation problem, cannot exec `cc1': No such file or directory gcc: installation problem, cannot exec `cc1': No such file or directory failure. removing: _configtest.c _configtest.o Traceback (most recent call last): File "setup.py", line 89, in ? setup_package() File "setup.py", line 82, in setup_package configuration=configuration ) File "/Users/chris/Development/numpy-1.0rc1/numpy/distutils/ core.py", line 174, in setup return old_setup(**new_attr) File "/Library/Frameworks/Python.framework/Versions/2.4/lib/ python2.4/distutils/core.py", line 149, in setup dist.run_commands() File "/Library/Frameworks/Python.framework/Versions/2.4/lib/ python2.4/distutils/dist.py", line 946, in run_commands self.run_command(cmd) File "/Library/Frameworks/Python.framework/Versions/2.4/lib/ python2.4/distutils/dist.py", line 966, in run_command cmd_obj.run() File "/Library/Frameworks/Python.framework/Versions/2.4/lib/ python2.4/distutils/command/build.py", line 112, in run self.run_command(cmd_name) File "/Library/Frameworks/Python.framework/Versions/2.4/lib/ python2.4/distutils/cmd.py", line 333, in run_command self.distribution.run_command(command) File "/Library/Frameworks/Python.framework/Versions/2.4/lib/ python2.4/distutils/dist.py", line 966, in run_command cmd_obj.run() File "/Users/chris/Development/numpy-1.0rc1/numpy/distutils/ command/build_src.py", line 87, in run self.build_sources() File "/Users/chris/Development/numpy-1.0rc1/numpy/distutils/ command/build_src.py", line 106, in build_sources self.build_extension_sources(ext) File "/Users/chris/Development/numpy-1.0rc1/numpy/distutils/ command/build_src.py", line 212, in build_extension_sources sources = self.generate_sources(sources, ext) File "/Users/chris/Development/numpy-1.0rc1/numpy/distutils/ command/build_src.py", line 270, in generate_sources source = func(extension, build_dir) File "numpy/core/setup.py", line 50, in generate_config_h raise "ERROR: Failed to test configuration" ERROR: Failed to test configuration -- Christopher Fonnesbeck + Atlanta, GA + fonnesbeck at mac.com + Contact me on AOL IM using email address

2 2

NumPy types --> Numeric typecodes map?
by Francesc Altet 25 Sep '06

25 Sep '06

Hi, Anybody know if there is a map between NumPy types and Numeric typecodes? Something like 'typecodes' for numarray: >>> numarray.typecode {'UInt64': 'U', 'Int32': 'i', 'Int16': 's', 'Float64': 'd', 'Object': 'O', 'UInt8': 'b', 'UInt32': 'u', 'Complex64': 'D', 'UInt16': 'w', 'Bool': 'B', 'Complex32': 'F', 'Int64': 'N', 'Int8': '1', 'Float32': 'f'} Thanks, -- >0,0< Francesc Altet http://www.carabos.com/ V V Cárabos Coop. V. Enjoy Data "-"

2 3

please restore the way dtype prints to original version
by Christopher Hanley 25 Sep '06

25 Sep '06

Hi, Change set 3213 changed the data type printing with an array from something like dtype=int64 to dtype='int64'. Although this is a small cosmetic change it has broken all of the doctests I have written for numpy code. I expect that I am not the only person this change has caught. Please restore the previous behavior until after the 1.0 release at least. Thank you, Chris

2 1

Negative division and numpy scalars
by Francesc Altet 25 Sep '06

25 Sep '06

Hi, I have been bitten by a subtlety in numpy scalar divisions. The next exposes the issue: >>> -1/20 -1 >>> Numeric.array([-1])[0] / Numeric.array([20])[0] -1 >>> numarray.array([-1])[0] / numarray.array([20])[0] -1 >>> numpy.array([-1])[0] / numpy.array([20])[0] 0 After some digging, I've found that Python and C follow different conventions for doing this negative division: Python do a floor of the result, while C truncates it. As numpy scalar operations seems to be implemented in C, it seems that it follows the C convention and truncates the result. In fact, I like this behaviour of NumPy scalars (at least, when I'm aware of it!), but I thought it would be nice to warn other people about that. Cheers, -- >0,0< Francesc Altet http://www.carabos.com/ V V Cárabos Coop. V. Enjoy Data "-"

1 0

Downcasting to smallest storage
by Matthew Brett 25 Sep '06

25 Sep '06

Hi, I am sorry if I have missed anything obvious here, but is there a fast simple way to downcast an array to the smallest storage that hold array data within a specified precision - e.g. a = array([1.0]) small_a = fantasy_function(a, rtol=1.0000000000000001e-05, atol=1e-08 ) b = array([1.2]) small_b = fantasy_function(b, tol=1.0000000000000001e-05, atol=1e-08) where a.dtype becomes, say, uint8, and b.dtype becomes float32? Thanks a lot, Matthew

1 0

Re: [Numpy-discussion] 無料
by miho 25 Sep '06

25 Sep '06

:―― INFORMATION ―――――――――――――――――――――――――: 不正・悪質なサイトを一切排除しておりますので安心してご利用ください。 http://love-match.bz/pc/?09 :――――――――――――――――――――――――――――――――――: *・゜゜・*:.。. .。.:*・゜゜・*:.。..。:*・゜゜・*:.。..。:**・゜゜・* お金と時間を持て余している人妻の間で、噂になってるあのサイト　　[登録・利用料全て無料]　http://love-match.bz/pc/?09 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 　□■ 不倫・ワリキリ専門の無料出会いサイト『Love☆Match』　----------------------------------------------------------------- 　　登録料・利用料　・・・・・・・・・【無料】　　メールの送受信　・・・・・・・・・【無料】　　ユーザーの検索　・・・・・・・・・【無料】　　掲示板の閲覧・書込み　・・・・・・【無料】　　画像交換・アップロード　・・・・・【無料】　　アドレス交換・電話番号交換　・・・【無料】　----------------------------------------------------------------- 　　どれだけ使っても全て無料！　http://love-match.bz/pc/?09 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 　□■ いつでも女性ユーザーがいっぱい。その理由は？　----------------------------------------------------------------- 　ＰＣ＆モバイルに対応！いつでもどこでも気軽に楽しめる！　----------------------------------------------------------------- 　仕事中は携帯電話から、プライベートは自宅からのんびりと。　気になる相手といつでも繋がっているから、新密度も急速にＵＰ。　http://love-match.bz/pc/?09 　----------------------------------------------------------------- 　ＰＣから簡単プロフィール作成。ネット初心者でもラクラク参加ＯＫ　----------------------------------------------------------------- 　面倒な登録は一切不要。パソコンから簡単なプロフィールを作成して　初心者の方や女性でもすぐに参加できます。　http://love-match.bz/pc/?09 　----------------------------------------------------------------- 　自由恋愛対応！直電・直メ交換支援ツール　----------------------------------------------------------------- 　基本的にメールアドレスや電話番号は非公開ですが　仲良くなった人だけにメールアドレスや電話番号を教える事ができます。　http://love-match.bz/pc/?09 　----------------------------------------------------------------- 　写真アップロードに対応！好みの相手を素早くＣＨＥＣＫ！　----------------------------------------------------------------- 　待ち合わせ場所にイメージとまったく違う人が来たら…。　ピュアックスなら会う前に写真交換ができるから、そんな不安も解消。　http://love-match.bz/pc/?09 　----------------------------------------------------------------- 　スレッド掲示板で秘密のパートナー検索も効率ＵＰ！　----------------------------------------------------------------- 　メインの掲示板のほかにスレッド型の掲示板を設置。　メル友から秘密のパートナーまで目的別のユーザーが集う掲示板です。　http://love-match.bz/pc/?09 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 　□■ 毎日500人近くのユーザーが続々参加中！！ □----------------------------------------------------------------- 　リエ（２１歳/会社員）　いつも１人でエッチなことを考えてます。　メールだといろいろ話せるんだけど、実際に会うとあまりしゃべれなく　なっちゃうので、盛り上げてくれるような楽しい男の人いないかな？　引っ込み思案のせいか、男性経験はあまり無いんです。　優しく＆楽しくリードしてくれる男性からのメール待ってます。　[写真有り] http://love-match.bz/pc/?09 □----------------------------------------------------------------- 　真菜（２４歳/フリーター）　彼氏が浮気してて超アタマきたっ！まなだって遊びたい盛りだし、ずっと　ガマンしてたのにさ！かっこいい人見つけて思いっきりふってやるつもりで　登録してみた（笑）　[写真有り] http://love-match.bz/pc/?09 □----------------------------------------------------------------- 　みさ（３４歳/専業主婦）　殆ど家に帰ってこない仕事人間のだんなさまと二人きりの毎日で、ほんと　寂しい思いをしています。年下の男の子がいれば仲良くなりたいな。　年下の人とは付き合ったことがないので興味津々です(^^) 　[写真無し] http://love-match.bz/pc/?09 □----------------------------------------------------------------- 　恭子（２８歳/会社員）　彼氏とはいつも同じようなセックスばかりでかなり冷め気味です。　誰かあたしと熱いセックスを楽しみませんか？めんどくさい事は　言いません。ただ、いつもと違うドキドキするような事がしたい　だけなんです。　[写真無し] http://love-match.bz/pc/?09 □----------------------------------------------------------------- 　ななこ（２８歳/主婦）　半年前にだんなと別れて今は×1です。　夜のお仕事なので、昼間まったりと過ごしませんか？　心身ともに疲れ気味で、今、激しく癒されたいです。　[写真有り] http://love-match.bz/pc/?09 □----------------------------------------------------------------- 　祥子（３１歳/クリエイター）　平日は18時くらいまでは大体仕事してるので、その後に食事したり　楽しく飲んだりできるパートナー希望です。年上でも年下でも　かまいませんので気軽にメールを送って頂けると嬉しいです。　[写真有り] http://love-match.bz/pc/?09 □----------------------------------------------------------------- 　ゅヵ`（２０歳/学生）　まずゎ会ってみないとはじまらなぃょね？！　横浜近辺の人で、いろんな意味でオトナな人は　プロフ付きでめぇる送って☆ 　[写真有り] http://love-match.bz/pc/?09 □----------------------------------------------------------------- 出会いサイトのサクラに騙されないように↓ 　┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓ 　　【裏】無料の出会い情報　　------------------------------------------------------------- 　　お金と時間を持て余している人妻の間で、噂になってるあのサイト　　[登録・利用料全て無料]　http://love-match.bz/pc/?09 　　------------------------------------------------------------- 　　彼女達が求めているのはこんな男性です。　　?年上女性にリードしてもらいたい、経験少なめの男性　　?体力・テクニックに自信が有る男性　　男性会員が不足しています。我こそは、と思う方は今すぐ参加！　　[登録・利用料全て無料]　http://love-match.bz/pc/?09 　┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛ 広東省茂名市人民大街3-6-4-533 友誼網絡公司 139-3668-7892

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Fixes to numexpr string support
by Ivan Vilata i Balaguer 25 Sep '06

25 Sep '06

Hi all, these are just a couple of small fixes to the string support in Numexpr, and a test case for the string copy operation. For the base patches: 1.http://www.mail-archive.com/numpy-discussion@lists.sourceforge.net/msg015… 2.http://www.mail-archive.com/numpy-discussion@lists.sourceforge.net/msg022… Cheers, :: Ivan Vilata i Balaguer >qo< http://www.carabos.com/ Cárabos Coop. V. V V Enjoy Data ""

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eval shortcomings?
by Angus McMorland 25 Sep '06

25 Sep '06

Hi all, Can someone explain why the following occurs? a = numpy.zeros((100)) b = numpy.ones((10)) a[20:30] = b # okay eval('a[50:60] = b') # raises SyntaxError: invalid syntax Is there some line mangling that the interpretor does that eval doesn't do? I see there's room for global and local parameters to eval. Would setting one of those be the answer? Cheers, Angus. -- AJC McMorland, PhD Student Physiology, University of Auckland Armourer, Auckland University Fencing Secretary, Fencing North Inc.

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Shift or rotate command?
by Angus McMorland 24 Sep '06

24 Sep '06

Hi all, Other data languages that I have worked with have a routine for shifting data along axes, with wrapping. In IDL it's called 'shift', and works such that print, a 0 1 2 3 4 5 6 7 8 9 10 11 print, shift(a, 2, 0) 2 3 0 1 6 7 4 5 10 11 8 9 print, shift(a, 2, 1) 10 11 8 9 2 3 0 1 6 7 4 5 In pdl (pdl.perl.org) the equivalent routine is called rotate. Is there a version of this in numpy, or can it be easily achieved using existing technology - I could do it with multiple sliced assignment statements but that seems very clunky and likely slow. I've looked through the examples and the numpy book but without success. Angus. -- AJC McMorland, PhD Student Physiology, University of Auckland Armourer, Auckland University Fencing Secretary, Fencing North Inc.

4 5

TPM全员设备维护与管理
by tpm 24 Sep '06

24 Sep '06

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TPM全员设备维护与管理
by tpm 24 Sep '06

24 Sep '06

1 0

[Numpy-discussion] 非财务经理的财务管理-沙盘模拟课程
by "9月28-29日/上海" 24 Sep '06

24 Sep '06

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dtype truth value
by Matthew Brett 23 Sep '06

23 Sep '06

Hi, Forgive my ignorance, but why is this? In [1]:from numpy import * In [2]:if not dtype('<f8'): ...: print 'Truth value is no' ...: ...: Truth value is no Best, Matthew

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wade puma
by Mat Foster 23 Sep '06

23 Sep '06

And bonus news, the story is already being translated to the big screen. I come down, with some vested interest here, I suppose, on the side of eccentric vision. ML: The Lord Soho series held some rather dark and acrid views of your fellow Englishmen. However, as a study in social behavior, I think its a neat site. I put the work into it and it stayed in the bestseller list for three months. You tune into us to hear us chat with science fiction and fantasy authors primarily. The problem, as Ive suggested, is a general one. However, as a study in social behavior, I think its a neat site. My piece is entitled The Last Frequency, and it was a lot of fun to do. Lorrie and Sheila talk about subjectivity and required reading list and interview Kathe Koja. got produced because my editor fell in love with the idea. If youve got the time and the inclination, please do so. For many underpublished authors, obscurity remains the number one obstacle to overcome. Swarming bees are usually incredibly docile, at least for a few hours. Yes, hes a friend of mine, and Im pimping the hell out of the book. And at such times she is as uncompromisingly physical as she is real. The problem, as Ive suggested, is a general one. The novella is also available to read online at Robs website. Gotta say I wont be complaining about this weather. No hard feelings, even if you knock the tar out of me. Create your own superhero or supervillian I wrote it because the fans wanted another Rincewind novel. And it looks like he just might have a taker.

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NumPy-Discussion September 2006