Function Inspector one of "Best Mathematical Graph Plotters"

I just found an article from addictivetips.com which compares Function Inspector with 2 more Android graph plotters, AndroPlotter and Grapher.

This is what it says about Function Inspector:

Function Inspector Lite has a few features in addition to those in the other two. However, most of these can only be used to the full in the paid (PRO) version of the application.The app sports only the most essential functions, can plot only one function at a time in the free and up to a maximum of 3 in the paid version. Still, features like the ability to display roots and other special points of plotted functions and three modes of interaction with the graph window namely panning, tracing and slope (PRO version only) modes do indeed make it the “most advanced graphing calculator available on the Market”. Another feature that catches the eye is the real-time update of the graph with every change made in the entered function.

Since it was compared to two free apps I understand the critique that many features are only available in the PRO version. And the fact that the app does not offer a lot of functions will be an incentive for future versions.
All in all, I think this is a pretty good review! Which can be proven by the bottom line of the article:

If you’re all for functionality and are ready to spend some cash, Function Inspector is the way to go.

So far, this was the first review on my app. Please comment if you found more ;)

But for know, I will focus on version 3.0 which will probably launch in 2 weeks!

Function Inspector Web online

I Just added a new Page "Function Inspector Web" to this blog which contains a link the Java Applet of Function Inspector Web.
This is the version that I published as an *.exe file a few days ago.

Please remember that you will need Java in order to run this applet. You will find a download link on this page, too.

Function Inspector coming to Desktops!

I just renamed the title of this blog from "Android-Blog" to "Dev-Blog" because I just finished a very early preview of a Desktop version of Function Inspector:

A very, very early build of Function Inspector Web which will probably be a Java applet in the future.

In fact, this is my very first useful (to some extend) software that is not written for Android. Of course, I was able to reuse all of the functionality because both is written in Java.

As you can see on the screenshot, I chose a layout that is quite similar to how the Android app is structured.

Those are the things that are working:

• Draw one function: It can draw any function entered in the huge text field. It should also recognize discontinuities like in tan(x)
• Pan and zoom: Just drag the area and use your mouse wheel to zoom
• Display roots, extrema and inflection points: It does not return the coordinates, though 

Everything else just won't do anything ;)

I am planning to create a dedicated website and upload it as a Java Applet. For now it is available for you to test it as a Windows *.exe file:

DOWNLOAD

Function Inspector 2.8

tan(x) and 1/x: Function Inspector 2.8
recognizes asymptotes and eliminates
vertical lines

I just published an update to Function Inspector which includes the following changes:

• Recognition of Asymptotes: functions like tan(x) or 1/x are no longer drawn with a vertical line
• No more haptic feedback for the keyboard: A user complained about it and I decided that it is unnecessary. If you found this feature useful, please let me know!
• Background work: I improved the existing code which should not affect the look and feel that you are used to. If it does, please let me know!

As you can see, Function Inspector is going towards its 3.0 release which will be a major upgrade as I am planning to make some changes to the UI as well as to improve the functionality.

But that's it for now, I hope you'll enjoy the update ;)

Function Inspector 2.7.1

This is a very minor but convenient update:
When the function input menu is opened, the first empty input box is focussed automatically, so you don't have to click in it!

Other than that I've been working on improving the existing code which is hard work that you don't notice, but it might speed up future updates ;)

Function Inspector 2.7

On Friday, I published the new version of Function Inspector which has the following changes:

• Improved look: As you can see on th picture, I turned on anti-aliasing which makes numbers look a lot better
• Extra folder for screenshots: Screenshots are no longer saved in the root directory of the SD card but in the folder you specify in the settings
• Improved buy dialog: Users of the LITE version can now choose from which market they want to buy the PRO version. For now, the AndroidPIT App Center is listed beside Android Market. I chose to let the user choose their market in order to let competition between the markets do some work ;)
• Bug Fixes: For example that "set a" works all the time, even if it is bigger than the maximum a.

As you can see, the changes are not that significant considering that it took about two weeks. This has to do with stress at school which will hopefully end with easter holidays when I'm going towards graduation ;)

Also, I want to thank everyone that provided feedback. During the last days, I received lots of feedback through my survey or through email which has been very useful!

Function Inspector on Motorola Xoom

Thanks to Alex, I got some pictures of the Motorola Xoom running Function Inspector PRO.
As you can see, it is not optimized to run on screens of that size. Since this has a screen resolution of 1280 by 800, a completely new approach of layout is required. This will be a long-term goal of further development, but as I do not own a tablet, this will be complicated.