How to display a chart in a UIView?

This picture is transmitted over the network, I have now decoded and read in memory, and now how to display it in a view? ? ? ? Seeking heroes wing ~ a code harder to good
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UIImage * drawimage = [UIImage imageWithCGImage: imageref] ;/ / *** __ NSAutoreleaseNoPool (): Object 0x1e5950 of class UIImage autoreleased with no pool in place - just leaking 

/ / Why every time you run into the following sentence at all output will be displayed: 
/ * 
Thu Aug 30 18:41:14 homewell test [1377] : CGContextSaveGState: invalid context 0x0 
Thu Aug 30 18:41:14 homewell test [1377] : CGContextSetBlendMode: invalid context 0x0 
Thu Aug 30 18:41:14 homewell test [1377] : CGContextSetAlpha: invalid context 0x0 
Thu Aug 30 18:41:14 homewell test [1377] : CGContextTranslateCTM: invalid context 0x0 
Thu Aug 30 18:41:14 homewell test [1377] : CGContextScaleCTM: invalid context 0x0 
Thu Aug 30 18:41:14 homewell test [1377] : CGContextDrawImage: invalid context 0x0 
Thu Aug 30 18:41:14 homewell test [1377] : CGContextRestoreGState: invalid context 0x0 
* / 
[Drawimage drawInRect: imagerect]; 

CGImageRelease (imageref); 

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Initialized with CGImage NSData
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NSData into UIImage, and then use the UIImageView display
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I was able to stream directly RGB convert NSData UIImage do?
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It is said not own tune drawInRect, with setneedsdisplay look
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NSData * data = / / / read memory
the pictureUIImage * image = [UIImage imageWithData: data];