All Cartesian Graph Mode Released

A new update is now available in Google Play.  This adds the All Cartesian graph mode that I talked about in the last post.  It is only available in the paid version.  In the next few days I will also add a tutorial to the website to help explain the differences between the two Cartesian graph modes.

Cartesian Graphing

Currently, Cartesian graphing mode will only graph an equation if it is able to solve for x or y.  This works fairly well, since we are able to graph many different functions including conic sections.  However, things like sin(x)=cos(y) will not be drawn completely (since it will solve for y, and end up graphing y=arccos(sin(x))  ) and xy>0 will not be drawn at all.

 In the next update, the current Cartesian mode will be called "Fast Cartesian" and a new "All Cartesian" mode will be added.  Only the paid version will have the "All Cartesian" mode.  In this new mode, all equations will be graphed.  However, this mode will be slower at drawing equations (which is why the other mode will be called Fast Cartesian).  It will also not have as many readings available to view and you will not be able to view these equations in table format.  For these reasons the old Cartesian mode should be used unless the equation is not able to be drawn in the old mode.

Here are some examples of the new All Cartesian mode.

sin(x)=cos(y)

xy>0

Release 2.5

A new version is on Google Play.  This allows you to save graph setups and screenshots.  The copy, cut, paste, undo, and redo keys on the keyboard are now icons instead of text.  Last, the app has been translated to Spanish and Japanese.

Graph Save/Recall

For the next release, I am working on adding save/recall to graphs.  When you save a graph, the equations, reading, and bounds will be saved.  You can then recall the graph at a later time to reference it.  You will also be able to transfer saved graph files between devices.  Once I get it added I will post some screenshots.

In the last update, I added translations for German.  This is the first language I translated to the app to (previously it was only available in English).  In future updates I will be translating the app to more languages.  A consequence of this is that every time I update the app, I will have to translate anything new added.  This adds extra work to each update.  Therefore, future updates will be less frequent, but there will likely be more features added in each update.  Expect at least a month or two between updates that add new features.  If necessary there will be some smaller updates in between that fix bugs.

Small Update Ahead

The live results update was uploaded to Google Play last week (in case you didn't notice).  I am working on a small update that will mostly be code organizational changes to prepare for future updates.  I am also planning on replacing the E key with the = key on the graph equations screen (on the default keyboard).  This will be much more convenient for entering graph equations.  The keyboard on the calculator will not be changing.  The update should be out sometime this week.

Live Results

For the next update, I am working on adding a setting to enable live results.  With live results, the calculator will calculate results as you type your problem in.  This setting will not be enabled by default.

Tables Released

Version 2.4 is now available on Google Play.  This adds a new table screen to view graph equations in table format.  You can also now fling the graph (except for log scaling).  The update includes a few other minor changes and fixes.