How to apply IBM CPLEX to my iOS projects? - ios

I am new to iOS development!
And I'm working on a project that deals with shift scheduling problems.
I was reading online paper and they mentioned that they used CPLEX to solve their linear programming problems.
So I'm wondering if there's anything that I have to know to run my scheduling constraints on CPLEX but get the results on Swift codes (XCode)?

what you could try also is to use CPLEX in the cloud which would be called from IOS.
You can find an example at https://developer.ibm.com/docloud/blog/2016/03/17/docloud-and-bluemix-demo/
You can try that example on your smartphone and then have a look at how to.
regards

CPLEX offers some libraries written in C, C++.
Xcode allow the use of this kind of librairies so I think you'll be able to work with inside your Swift project.
Hope this helps !

Related

Known issues for iOS modularized approach?

We've a classic iOS application which was developed using objective-c and it has lot of features. The same features has been used for other similar apps as well.
Now we've plan to rewamp the entite application. One of the approach to reduce the development work, we've plan to modularize features as framework re-using the same objective-c code, so that all applicaiton can use the framework and compile time will be less.
Also as part of rewamp, we will be using iOS 10 and swift3.
Please kindly share me your ideas/feedback, what are issues will be popup or any limitaion to do this approach.
Appreciate your help!
Thanks,
Srini
Just pack it as cocoapods and deploy into your company git is the fastest way i suppose, packing into framework is also fine but it have many boilerplate thing like cant run on either device or simulator, and if using fat framework then need to extract the simulator part out when you archive, or have to use embed framework if they are depent on each other,.... its just pretty annoying

Binding Tesseract as a static Lib in Xamarin

I am trying to add tesseract to my iOS-App. Im doing the App with Xamarin.iOS.
I tried creating a .dll with btouch and used for that the ported version of tesseract on github(https://github.com/gali8/Tesseract-OCR-iOS). I created the bindings of tesseractOCR.h with Objective-Sharpie and created a
.dll with the TesseractOCR.a file.
Everything worked fine but when trying to build my app with the .dll referenced it gives me the attached Errors.
https://www.dropbox.com/s/w9cvzozgw4gffdx/Screen%20Shot%202014-03-31%20at%2012.46.24.png
How can I fix them?
Thanks in advance
Alex
This seems a good question and I came here looking for Xamarin bindings for Tesseract library, but there was none on this page. After searching, I found that there are a couple of bindings already for Xamarin:
Classic
1. https://github.com/sraiteri/Xamarin-Tesseract-OCR-iOS
Unified
2. https://github.com/jherby2k/Xamarin-Tesseract-OCR-iOS-Unified
Xamarin Forms
3. https://github.com/halkar/Tesseract.Xamarin
Also, there seems to be an active and modern porting to swift, and can be found here:
https://github.com/WhitneyLand/SwiftOpenCV
This discussion on Xamarin forum seems also very useful for anybody interested in this question:
https://forums.xamarin.com/discussion/3673/help-adding-tesseract-as-a-ios-binding-project
Disclaimer: I have not tried any of them yet, just finished my research, now gonna start my experimentation :)
This is because Tesseract uses c++ and the binding needs to know this.
I would suggest creating a binding project as per the tutorial at Xamarin. Then this Xamarin forum post gives great information on how to add c++ to the LinkWith attribute.

Looking for an IOS version of ShowcaseView

I'm looking for a library similar to https://github.com/amlcurran/ShowcaseView
I want to be able to implement forced tutorials on new users who open my application for the first time. Does anyone know where I can find a library that helps make this easy?
You ca try https://github.com/rahuliyer95/iShowcase
This is a quite similar iOS implementation of the ShowcaseView for Android (https://github.com/amlcurran/ShowcaseView).

Implementing ASIFT in Android

I am new to both openCV and Android. I have to detect objects in my project. So, I have decided to use ASIFT for the same. However, the code they have given here is very lengthy. It contains lots of C file. It also doesn't have openCV support.
Some search on the SO itself suggested that it is easier to connect the ASIFT code to the openCV library, but I can't figure out how to do that. Can anyone help me by giving some link or by telling the steps that I should use to add ASIFT to my openCv library, which I can further utilize in making my Android application?
Also, I would like to know whether using Android NDK along with JNI to make calls to the C files or using Android SDK along with binary package for my android project(Object Detection) would be a suitable option for me?
Finally , I solved my problem by using the source code given at the website of ASIFT developers. I compacted all the source files together to make my own library using make. I then called the required function from the library using JNI.
It worked for me, but the execution is taking approximate 2 mins on an Android device. Anyone having some idea about ways to reduce the running time ?
They used very simple and slow brute force matching (just for proving of concept). You can use FLANN library and it will help a lot. http://docs.opencv.org/doc/tutorials/features2d/feature_flann_matcher/feature_flann_matcher.html

CPAN/gem-like repository for Objective-C and Cocoa?

Is there any centralized repository of useful Objective-C / Cocoa libraries as there is for Perl, Ruby, Python, etc.?
In building my first iPhone app, I'm finding myself implementing some very basic functions that would be just a quick "gem install" away in Ruby.
There's a project for that! It's called CocoaPods!
Homepage: http://cocoapods.org/
Source: https://github.com/CocoaPods/CocoaPods
Unfortunately not :(
There are some very useful sites however. I find one of the best is cocoadev.com as it contains lots of useful information about many of the more obscure classes usually including snippets of code to do some really cool things :)
Maybe we (the cocoa community) should look into building something like this!
Oh and I just remembered this site cocoadevcentral.com which is also very good for starting out with cocoa.
Daniel mentioned http://cocoadev.com.
More specifically, check out http://www.cocoadev.com/index.pl?ObjectLibrary.
"This page is for tracking re-usable Cocoa classes that can be mixed, matched, and dropped fairly easily into existing Cocoa projects to add useful functionality."
I'd be interested in what kind of "basic functions" you're having to implement. There's actually quite a lot already there in the provided libraries, and I wonder if you're just not finding functionality that's already there...
There's a new index of reusable code for Mac OS and iOS: Cocoa Objects
I might be confused or missing something here... But doesn't apple provide all the Foundation / Cocoa / AppKit / CoreAudio / Qtkit / etc libraries that should provide all of the very basic functions you are looking for?
Other than what xcode comes with or is on the apple dev site, there are no centralized repo's for Cocoa.
Google Code also has some objective C things up. It depends on what you are looking for...
Also see GitHub, many useful Objective-C projects, especially re iPhone. See activerecord & cocoaoniguruma, for instance.
http://github.com/search?q=objective-c
http://github.com/search?q=objc
Google has Google toolbox for mac which got me started unit testing my iPhone application which was the main thing I found missing.

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