A simple but effective dynamic GraphView implementation for iPhone SDK for float values.
The left image shows a graph with only positive values and without curved lines. The right graph draws from positve and negative values and has the option for curved lines activated.
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Implementing this control into your project is very easy.
import <UIKit/UIKit.h>
import "GraphView.h"
@interface ViewController : UIViewController <UITextFieldDelegate> {
GraphView *graphView;
}
@property (strong, nonatomic) GraphView *graphView;
@end
- (void)viewDidLoad
{
graphView = [[GraphView alloc]initWithFrame:CGRectMake(10, 10, self.view.frame.size.width-20, 180)];
[graphView setBackgroundColor:[UIColor yellowColor]];
[graphView setSpacing:10];
[graphView setFill:YES];
[graphView setStrokeColor:[UIColor redColor]];
[graphView setZeroLineStrokeColor:[UIColor greenColor]];
[graphView setFillColor:[UIColor orangeColor]];
[graphView setLineWidth:2];
[graphView setCurvedLines:YES];
[self.view addSubview:graphView];
}
Done!
1) This will display a graph of float values:
[graphView setArray:(NSArray)]
2) This will add a point to the graph. You can add as many as you like and even do this dynamically. The graph will update every time a new value has been added:
[graphView setPoint:(float)]
3) This will reset the graph to all 0 values:
[graphView resetGraph]
4) This sets the number of values displayed in the graph:
[graphView setNumberOfPointsInGraph:(int)]
5) This will make the space beneth the graph line fill or not:
[graphView setFill:(BOOL)]
Thats all!
If you have any more question, please read the comments in GraphView.h and GraphView.m or send me a message.
Please concider the MIT License agreement.