How to write text on graph x and y-axis intervals points?

Question

I developed graph using NSObject class and using CGContext method. The following code displaying dynamically in X and Y-axis intervals,

    CGContextSetRGBStrokeColor(ctx, 2.0, 2.0, 2.0, 1.0);
    CGContextSetLineWidth(ctx, 2.0);
    CGContextMoveToPoint(ctx, 30.0, 200.0);
    CGContextAddLineToPoint(ctx, 30.0, 440.0);
    for(float y = 400.0; y >= 200.0; y-=30)
       {   
           CGContextSetRGBStrokeColor(ctx, 2.0, 2.0, 2.0, 1.0);   
           CGContextMoveToPoint(ctx, 28, y);
           CGContextAddLineToPoint(ctx, 32, y);
           CGContextStrokePath(ctx);
           //CGContextClosePath(ctx);  
        }

    CGContextMoveToPoint(ctx, 10, 420.0);       
    CGContextAddLineToPoint(ctx, 320, 420.0);
    //CGContextAddLineToPoint(ctx, 320.0, 420.0);
    //CGContextStrokePath(ctx);
    for(float x = 60.0; x <= 260.0; x+=30)
       {   
           CGContextSetRGBStrokeColor(ctx, 2.0, 2.0, 2.0, 1.0);   
           CGContextMoveToPoint(ctx, x, 418.0);
           CGContextAddLineToPoint(ctx, x, 422.0);
           CGContextStrokePath(ctx);
           CGContextClosePath(ctx);  
        }

I want to write the dynamic text on the X and Y-axis lines near the intervals (like X-axis is denoting number of days per week and Y-axis denoting something per someting)? Thanks.

Answer 1

You might want to look at the Core Plot framework.

Answer 2

The link Steve provided above has source code. Under the tab that says "Source"

http://code.google.com/p/core-plot/source/browse/