I am trying to write an application that needs to plot some data and draw lines 
between the points.
The code I am using is:
       for(index = 0; index < (limit - 1); index++)
        {

            [NSBezierPath setDefaultLineWidth: 4 * MIN(unitSize.height, 
                                                       unitSize.width)];
            [delegate dataPointAtIndex: index x: &x y: &y];
            [delegate dataPointAtIndex: index+1 x: &x1 y: &y1];
            [NSBezierPath strokeLineFromPoint:NSMakePoint(x, y) 
toPoint:NSMakePoint(x1, y1)];
        }
Lines with sufficient slope always draw in Black(the set color), and the 
specified width. However if the slope is low enough they print thinner, and in 
a different color.
This is an example:


Can't find any discussion of this effect in any books or online documentation. 
Would appreciate any suggestions. I am trying to use this project to learn 
Cocoa and Objective-C
so am still not familiar with all the ins and outs.

Dale Satterfield
dsatterfi...@mac.com

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