Mailman 3 May 2018 - SciPy-User

How to display a RGB image (MFISH)?
by jp April 3, 2023

April 3, 2023

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 July 28, 2022

July 28, 2022

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 March 14, 2022

March 14, 2022

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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PyCM: Multiclass confusion matrix library in Python
by Sepand Haghighi May 31, 2018

May 31, 2018

PyCM is a multi-class confusion matrix library written in Python that supports both input data vectors and direct matrix, and a proper tool for post-classification model evaluation that supports most classes and overall statistics parameters. PyCM is the swiss-army knife of confusion matrices, targeted mainly at data scientists that need a broad array of metrics for predictive models and an accurate evaluation of large variety of classifiers. Github Repo : https://github.com/sepandhaghighi/pycm Webpage : http://pycm.shaghighi.ir/ JOSS Paper : https://doi.org/10.21105/joss.00729

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ANN: EuroScipy 2018
by Valerio Maggio May 29, 2018

May 29, 2018

*** Apologies if you receive multiple copies *** Dear Colleagues, We are delighted to invite you to join us for the **11th European Conference on Python in Science**. The EuroSciPy 2018 (https://www.euroscipy.org/2018/) Conference will be organised by Fondazione Bruno Kessler (FBK) and will take place from August 28 to September 1 in **Trento, Italy**. The EuroSciPy meeting is a cross-disciplinary gathering focused on the use and development of the Python language in scientific research. This event strives to bring together both users and developers of scientific tools, as well as academic research and state of the art industry. The conference will be structured as it follows: Aug, 28-29 : Tutorials and Hands-on Aug, 30-31 : Main Conference Sep, 1 : Sprint TOPICS OF INTEREST: =================== Presentations of scientific tools and libraries using the Python language, including but not limited to: - Algorithms implemented or exposed in Python - Astronomy - Data Visualisation - Deep Learning & AI - Earth, Ocean and Geo Science - General-purpose Python tools that can be of special interest to the scientific community. - Image Processing - Materials Science - Parallel computing - Political and Social Sciences - Project Jupyter - Reports on the use of Python in scientific achievements or ongoing projects. - Robotics & IoT - Scientific data flow and persistence - Scientific visualization - Simulation - Statistics - Vector and array manipulation - Web applications and portals for science and engineering - 3D Printing CALL FOR PROPOSALS: =================== EuroScipy will accept three different kinds of contributions: * Regular Talks: standard talks for oral presentations, allocated in time slots of 15, or 30 minutes, depending on your preference and scheduling constraints. Each time slot considers a Q&A session at the end of the talk (at least, 5 mins). * Hands-on Tutorials: These are beginner or advanced training sessions to dive into the subject with all details. These sessions are 90 minutes long, and the audience will be strongly encouraged to bring a laptop to experiment. * Poster: EuroScipy will host two poster sessions during the two days of Main Conference. So attendees and students are highly encourage to present their work and/or preliminary results as posters. Proposals should be submitted using the EuroScipy submission system at https://pretalx.com/euroscipy18. **Submission deadline is May, 31st 2018**. REGISTRATION & FEES: ==================== To register to EuroScipy 2018, please go to http://euroscipy2018.eventbrite.co.uk or to http://www.euroscipy.org/2018/ Fees: ----- | Tutorials | Student* | Academic/Individual | Industry| |-----------------------------|----------|---------------------|----------| | Early Bird (till July, 1st) | € 50,00 | € 70,00 | € 125,00 | | Regular (till Aug, 5th | € 100,00 | € 110,00 | € 250,00 | | Late (till Aug, 22nd) | € 135,00 | € 135,00 | € 300,00 | | Main Conference | Student* | Academic/Individual | Industry| |-----------------------------|----------|---------------------|----------| | Early Bird (till July, 1st) | € 50,00 | € 70,00 | € 125,00 | | Regular (till Aug, 5th | € 100,00 | € 110,00 | € 250,00 | | Late (till Aug, 22nd) | € 135,00 | € 135,00 | € 300,00 | * A proof of student status will be required at time of the registration. kind regards, Valerio EuroScipy 2018 Organising Committee, Email: info(a)euroscipy.org Website: http://www.euroscipy.org/2018 twitter: @euroscipy

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Scikit-image 0.14.0 release [cross-listed]
by Egor Panfilov May 29, 2018

May 29, 2018

Hello list, On behalf of `scikit-image` team I'm happy to announce the release of `scikit-image` version 0.14.0 ! This release brings a lot of exciting additions (such as new segmentation tools and algorithms, new datasets and data generating routines), various enhancements (nD support for image moments and regionprops, rescale, resize and pyramid_* function, multichannel support for HOG, multiple performance improvements, and many more) and a number of bugfixes to the code and to the documentation. I am also pleased to inform you that 0.14.x is the last major release with official support for Python 2.7. In order to make the transition to Python 3.x smooth for all the users we're making this release a long-term support one (it will receive important bugfixes and backports for approx. 2 years, following the Python 2.7 end-of-life cycle). For more details on the changes and additions, please, refer to the release notes [1]. I'd like to thank all the developers of the library for their hard work, and all the users for staying with us! Regards, Egor Panfilov, scikit-image core team .. [1] https://github.com/scikit-image/scikit-image/blob/v0.14.x/doc/release/relea… .. [2] https://pypi.org/project/scikit-image/

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Guidance required for automation of Excel work and Data Sciences
by gaurav sinha May 28, 2018

May 28, 2018

Dear Experts Greetings!! *About me- I am Telecom professional having ~10 years of experience in 2G/3G/4G mobile technologies. * *I have selected Python as my Programming Language. Its been some time, I stared to learn and work in Python. * *Subject*- Guidance required for automation of Excel work and suggestion for Data Sciences. *Goal*- We have lots of parameters, spreed in many excel files (raw excel files having different parameter on data/time basis). I have to make a customized Excel sheet from these raw excel sheet having data (parameters vs data) which can be used as one button solution. I mean to say that, just we need to fetch the excel reports (raw) and put in a folder and just press one button/script file to generate our final report. Please suggest how to proceed. Also please suggest how to master the Python in the filed of Data Sciences. Thanks a lot!! * BR//GAURAV SINHA*

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Multibody Vehicle Dynamic Simulation
by yc-153434＠hs-weingarten.de May 25, 2018

May 25, 2018

Dear Scipy-Users, I am a student from Germany and I'm new to Scipy. It would be nice if you could help me out with your recommendations for the following project: I am planing to do a *vehicle dynamic simulation with a multibody system for a race car*. The suspension of the car is very simple and the whole car can be simplified. *Goal:* The vehicle should automatically follow a given path/trajectory (which is the racing line of a racing track) at the maximum possible speed/acceleration. I want to optimize some suspension parameters to get the minimum lap time of the given path/trajectory. This is called a lap time simulation. It should be possible to visualize the car in a (simple) 3D Model. *The conditions for this project:* I have time of 5 months for this project. I am a bachelor student of automotive engineering. I am working full time on this project. I am willing to do programming. I have some basic experiences in python and i have installed the anaconda distribution on a Linux distribution. I have basic knowledge of kinematics/dynamics. *Some doubts and questions that i have:* 1. In general: is it possible and advisable to do this in python? If not, which free software would you recommend? MBDyn? GNU Octave? SciLab? OpenModellica? MBSymba? 2. Which python environment (for Linux) would you recommend for programming? Spyder? Jupyter Notebook? 3. Which software would you recommend for visualization? 4. Which package should I use for the multibody approach? PyDy? SymPy? 5. How should I model the tires? With OpenTyre? 6. Which book is recommendable for my project? "The Multibody Systems Approach to Vehicle Dynamics" by Mike Blundell? Do you know any other source of information which could be helpful for me? 7. Do you think I can handle this project in the given time? Thanks a lot! Greetings

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KD Tree with great circle distances
by ashwin .D May 21, 2018

May 21, 2018

Hello, I am using - https://docs.scipy.org/doc/scipy/reference/generated/scipy.spatial.KDTree.h… which I believe is using Euclidean distances underneath the hood. But I want to be able to use great circle distances. Is this the only way to do this - https://stackoverflow.com/questions/20654918/python-how-to-speed-up-calcula… or is there some way I can extend that class to use great circle distances(maybe somebody has already done that ? ) I have a irregular shaped grid in a WGS 84 ellipsoid(can be assumed to be a sphere) and so I want to use great circle distances or if somebody can convince me not to that would be great as well. Best regards, Ashwin.

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EuroSciPy 2018 - extended deadline - registration open
by Pierre de Buyl May 17, 2018

May 17, 2018

Dear SciPy community, The EuroSciPy 2018 conference, held in Trento from August 28 to September 1 has opened its registration at https://www.euroscipy.org/2018/ ! Also, the deadline for participations (talks, posters, tutorials) has been extended to May 31, don't miss it! All the info is on our web page, feel free to contact us if needed and follow us on Twitter :-) https://twitter.com/EuroSciPy Regards, The EuroSciPy staff

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