Mailman 3 September 2020 - SciPy-User

How to display a RGB image (MFISH)?
by jp 03 Apr '23

03 Apr '23

Hi, I have written a script to try to combine five images into a three channels RGB images<http://dip4fish.blogspot.com/2011/05/trying-to-combine-mfish-images-into-rg…> . The resulting RGB image looks like a grey scale image instead of a color one. I have three np.array Rnorm, Gnorm, Bnorm which are copied into a rgb array: *rgb = np.zeros((shape[0],shape[1],3),dtype=float) mxr=np.max(R) mxg=np.max(G) mxb=np.max(B) Rnorm=np.uint8((255*(R/mxr)))Gnorm=np.uint8((255*(R/mxg)))Bnorm=np.uint8((255*(R/mxb)))#copy each RGB component in an RGB array rgb[:,:,0]=Rnorm rgb[:,:,1]=Gnorm rgb[:,:,2]=Bnorm* *pylab.subplot(224, aspect='equal',frameon=False, xticks=[], yticks=[]) pylab.imshow(rgb) pylab.show()* Any advice? Thank you Jean-Patrick

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Invitation to connect on LinkedIn
by Jelle Feringa via LinkedIn 28 Jul '22

28 Jul '22

LinkedIn ------------ Jelle Feringa requested to add you as a connection on LinkedIn: ------------------------------------------ Jose, I'd like to add you to my professional network on LinkedIn. - Jelle Accept invitation from Jelle Feringa http://www.linkedin.com/e/-3wy1w2-gpkzwpgn-5n/Q6WKH0LACopGJkAw_6fSqajo6R7VM… View invitation from Jelle Feringa http://www.linkedin.com/e/-3wy1w2-gpkzwpgn-5n/Q6WKH0LACopGJkAw_6fSqajo6R7VM… ------------------------------------------ DID YOU KNOW your LinkedIn profile helps you control your public image when people search for you? Setting your profile as public means your LinkedIn profile will come up when people enter your name in leading search engines. Take control of your image! http://www.linkedin.com/e/-3wy1w2-gpkzwpgn-5n/ewp/inv-22/ -- (c) 2011, LinkedIn Corporation

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Help required regding Eigenvectors
by Sudheer Phani 14 Mar '22

14 Mar '22

Hello All, I have been encountering some strange problems with the calculation of eigen vectors using python. The problem is with the sign of the eigen vectors calculated. On Very few occasions the eigen vectors calculated using python have an opposite sign than the actual eigenvectors, though the magnitude is correct. Can any one of you plz help me in this regard and suggest me some solution if you have encoutered similar problems . Any help in this regd is appreciated Thanks in Advace regds Sudheer

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ANN: SfePy 2020.3
by Robert Cimrman 29 Sep '20

29 Sep '20

I am pleased to announce the release of SfePy 2020.3. Description ----------- SfePy (simple finite elements in Python) is a software for solving systems of coupled partial differential equations by finite element methods. It is distributed under the new BSD license. Home page: https://sfepy.org Mailing list: https://mail.python.org/mm3/mailman3/lists/sfepy.python.org/ Git (source) repository, issue tracker: https://github.com/sfepy/sfepy Highlights of this release -------------------------- - new script for visualizations based on pyvista - generalized Yeoh hyperelastic term + example For full release notes see [1]. Cheers, Robert Cimrman [1] http://docs.sfepy.org/doc/release_notes.html#id1 --- Contributors to this release in alphabetical order: Robert Cimrman Jan Heczko Vladimir Lukes

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NumPy 1.19.2 released
by Charles R Harris 10 Sep '20

10 Sep '20

Hi All, On behalf of the NumPy team I am pleased to announce that NumPy 1.19.2 has been released. This release fixes several bugs, prepares for the upcoming Cython 3.x release. and pins setuptools to keep distutils working while upstream modifications are ongoing. The aarch64 wheels are built with the latest manylinux2014 release that fixes the problem of differing page sizes used by different Linux distros. There is a known problem with Windows 10 version=2004 and OpenBLAS svd that we are trying to debug. If you are running that Windows version you should use a NumPy version that links to the MKL library, earlier Windows versions are fine. This release supports Python 3.6-3.8. Downstream developers should use Cython >= 0.29.21 when building for Python 3.9 and Cython >= 0.29.16 when building for Python 3.8. OpenBLAS >= 3.7 is needed to avoid wrong results on the Skylake architecture. The NumPy Wheels for this release can be downloaded from PyPI <https://pypi.org/project/numpy/1.19.2/>, source archives, release notes, and wheel hashes are available from Github <https://github.com/numpy/numpy/releases/tag/v1.19.2>. Linux users will need pip >= 0.19.3 in order to install manylinux2010 and manylinux2014 wheels. *Contributors* A total of 8 people contributed to this release. People with a "+" by their names contributed a patch for the first time. - Charles Harris - Matti Picus - Pauli Virtanen - Philippe Ombredanne + - Sebastian Berg - Stefan Behnel + - Stephan Loyd + - Zac Hatfield-Dodds *Pull requests merged* A total of 9 pull requests were merged for this release. - #16959: TST: Change aarch64 to arm64 in travis.yml. - #16998: MAINT: Configure hypothesis in ``np.test()`` for determinism,... - #17000: BLD: pin setuptools < 49.2.0 - #17015: ENH: Add NumPy declarations to be used by Cython 3.0+ - #17125: BUG: Remove non-threadsafe sigint handling from fft calculation - #17243: BUG: core: fix ilp64 blas dot/vdot/... for strides > int32 max - #17244: DOC: Use SPDX license expressions with correct license - #17245: DOC: Fix the link to the quick-start in the old API functions - #17272: BUG: fix pickling of arrays larger than 2GiB Cheers, Charles Harris

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ANN: pvlib-0.8.0 python package for solar energy modeling
by Dr. Mark Alexander Mikofski PhD 09 Sep '20

09 Sep '20

Dear Pythonistas and Solar Energy enthusiasts, I am very happy to announce a new, major release of pvlib python, for simulating the performance of photovoltaic solar energy systems. *See what's new for v0.8.0:* * https://pvlib-python.readthedocs.io/en/stable/whatsnew.html *Releases are available from the CheeseShop and the conda-forge channel:* * https://pypi.org/project/pvlib/ * https://anaconda.org/conda-forge/pvlib-python *Read the Documentation:* * https://pvlib-python.readthedocs.io/en/stable/index.html *Report issues & contribute:* * https://github.com/pvlib/pvlib-python *Highlights:* * Because this is a major release, there are many breaking changes so please read through the release notes carefully before updating * Python-3.5 is no longer supported, SciPy-1.2.0 is now a required dependency, and the Pandas minimum version is now v0.22.0 * New functions for calculation of sky-diffuse irradiance, fitting PV module IV-curve traces to single-diode model coefficients, and accommodating terrain slope when backtracking. * Many new contributors, bug fixes, and improvements in the documentation. * Also coming soon, AirSpeed Velocity benchmarks. Stay tuned! *The development team thanks you for using pvlib python!* -- Mark Mikofski, PhD (2005) *Fiat Lux*

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