Matlab integration with Ruby on Rails [closed] - python

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I want to create Ruby on Rails web app (or on other dynamic languages such as Python), that should interact with Matlab.
Web app sends some info to the matlab server (or simply run matlab file with necessary data if it's possible) that processing this stuff and returns results back to the Rails server. Is it possible to do something like this?

If I understand correctly, you want to want to send info to matlab from a webapp. Then run some process on it using matlab, then it sends the info back to ruby to display it.
No matlab expert but if you did it in python (which you said you could) you could write your results to a database and then read the database in ruby, I expect you can export results from matlab into a database as well.
To use SQLite database in python you can import the module:
import sqlite3
The relevant documentation is here https://docs.python.org/2/library/sqlite3.html

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Can we develop a Python API which wraps R code [closed]

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I have a working R script. Can this be wrapped in a Python code so it can be deployed as an API ?
As mentioned in an earlier post, things that are not easy in R can be relatively simple in other languages. Another example would be connecting to Amazon Web Services. In relation to s3, although there are a number of existing packages, many of them seem to be deprecated, premature or platform-dependent. (I consider the cloudyr project looks promising though.)
If there isn’t a comprehensive R-way of doing something yet, it may be necessary to create it from scratch. Actually there are some options to do so by using AWS Command Line Interface, AWS REST API or wrapping functionality of another language.
http://jaehyeon-kim.github.io/2015/11/Quick-Test-to-Wrap-Python-in-R.html

Creating a simple python web application [closed]

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I have a python script that takes inputs from commandline. I simply want to modify this script so I can run it on web. I want the commandline interface to be replaced by a simple boxes in a web page, and once the script is executed, I want the results to be shown on a webpage like it does in commandline.
Any help on where to start, which python packages to use and which steps to take would be much appreciated.
Until now, I read a little about webapp2 for Google App Engine and web.py. I do not want to use Django.
Thank you!
While you can use a microframework like Flask [1] for quickly getting started, you can get closer to the metal. Try learning about the HTTP protocol and implement your own server using the http module. Python 3's http.server contains a class SimpleHTTPServer [2] which can be very good for understanding how you're communicating between the client and your process.
[1] http://flask.pocoo.org/docs/0.12/quickstart/
[2] https://docs.python.org/2/library/simplehttpserver.html
Have you considered using Flask?
http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-i-hello-world
This is a pretty great tutorial on how to make a basic webapp.

Load data from Essbase into SQL database [closed]

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I'm currently using a mix of smart view and power query(sql) to load data into Excel models however my excel always crashes when smart view is used. I'm required to work in Excel but I'm know looking at finding a way to periodically load data from Essbase into my SQL server database and only use power query(sql) for all my models. What would be my best options in doing this? Being a Python enthusiast I found essbasepy.py however there isn't much documentation on it. Please help
There are a couple of ways to go. The most straightforward is to export all of the data from your Essbase database using column export, then designing a process to load the data into SQL Server (such as using the import functionality or BULK IMPORT, or SSIS...).
Another approach is to use the DataExport calc script command to export either to a file (that you then load into SQL) or directly to the relational database (DataExport can be configured to export data directly to relational).
In either case, you will need privileges that are greater than normal user privileges, and either approach involves Essbase automation that may require you to coordinate with the Essbase admin.

driver to connect to mysql with python [closed]

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i am trying to connect to a database and insert data with python.I found too many connector drivers like : mysql-connector,pymysql, MySQLdb. I want to know which way is better to communicate with database in python3.4 .
In our project we have remote machine with MySQL default client, we create SSH object of it and run sql query using traditional client. It's the most safe way and supports mostly everything with best optimized support.
However, if you want to prepare sql handle in python I will suggest go for pymysql, as pymysql is updated regularly & its very much stable & easy to use compared to others.
I would check out sqlalchemy http://www.sqlalchemy.org/. Or if you want more of an object-relational-manager then set up a small Django project https://www.djangoproject.com/.

Running a python script using several computers (grid/cluster) [closed]

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Is there a way to run my python script using several computers communicating through my web server? Willing to do a lot more research if someone can point me in the right direction, but I can't seem to find any useful info on this.
A simple script can't be automatically distributed, you need to break it into components that can run independently when given a part of the problem. These components run based on commands received from a library like PyMPI, or pull them from a queuing system like http://aws.amazon.com/sqs/
This also means you can't rely on having shared local memory. Any data that needs to be exchanged must be exchanged as part of the command, stored on a shared file system or placed in a database AWS Dynamo, Redis, ect.
There are a large number of links to more resources available at https://wiki.python.org/moin/ParallelProcessing under the Cluster Computing heading.

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