Hi,

I have a completed app that calculates graph points x and y coordinates. I want to present these on a graph that has an acceptable "envelope" of coordinates.
I'm guessing that i need to learn how to use quartz to draw lines  
pixel by pixel to represent this on a UIview.  is there any easier /  
better way to do this that I have overlooked....  i did look at  
providing a uiview background preformattted with the graph but i  
haven't found a tool that will allow me to draw that accurately.
Also can is use the NSrange objects to check if a certain set of  
coordinates is inside a particular envelope.
That is,

if I have a value of x= 10,000 y = 211.2 and an envelope of 9500, 200: 13000, 211: 14000,214: 9500,214 can i use NS range to check if the original coordinates are inside the bounds of that rectangle...
if not any ideas how i might do that...



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