iOS Graphing!

[dgdosen]

Anyone know if there's anything in the SDK about how to draw a simple 2D graph? Kind of like the Stocks Applet uses?

Any push in the right direction would be greatly appreciated...

 

[chrisesposito]

Take a look at the Accelerometer Graph sample code.

 

[davedelong]

The basic idea is that it's an NSBezierPath that you add a whole bunch of points to like so:

NSBezierPath * myPath = [NSBezierPath bezierPath];
[myPath moveToPoint:NSMakePoint(0,0)];  //the starting point
[myPath lineToPoint:NSMakePoint(0,1)];
[myPath lineToPoint:NSMakePint(1,1)];
... etc...
[myPath stroke];
[myPath release];

 

[dgdosen]

Anyone have sample code that mimics the stock application graphing? That's pretty clean...

 

[GoCubsGo]

Kinda off topic but I sure wish they'd bring out a graphing calculator like the TI ones.

 

[Sbrocket]

The basic idea is that it's an NSBezierPath that you add a whole bunch of points to like so:

NSBezierPath * myPath = [NSBezierPath bezierPath];
[myPath moveToPoint:NSMakePoint(0,0)];  //the starting point
[myPath lineToPoint:NSMakePoint(0,1)];
[myPath lineToPoint:NSMakePint(1,1)];
... etc...
[myPath stroke];
[myPath release];

NSBezierPath does not exist on the iPhone platform. I believe the way to do drawing like that is with CoreGraphics and a CGPath.