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David Hoerl dhoerl

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@dhoerl
dhoerl / LTActionSheet.h
Created Jan 27, 2012
UIActionSheet Subclass providing ability to set Font and Alignment for the message. Please advice if your app with it gets accepted.
View LTActionSheet.h
/*
LTActionSheet - a UIActionSheet subclass to support customized fonts and alignment
Copyright (C) 2011 by David Hoerl
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
@dhoerl
dhoerl / README.txt
Created Jan 27, 2012
BEST FIT NORMAL CURVE TO A HISTOGRAM
View README.txt
BEST FIT NORMAL CURVE TO A HISTOGRAM
I had a business need to provide the mean value of a process based on its bell-shaped histogram. Now, normally that would be an easy thing to do—there is a standard formula to get the mean and standard deviation.
However, in my case, the histogram has a skew. One side does not tail off to zero, but to some value midway between the peak value and zero.
After lots of googling, I found a paper written in 1993 by Brown and Hwang titled How To Approximate a Histogram by a Normal Density (http://www.jstor.org/pss/2685281). After purchasing a copy, I inquired if the author’s had software that implemented their algorithms. When the answer came back, I had to dig deep and turn their formulas into code, One integral had no series sum solution, so I had to really really dig deep and figure out how to do the conversion myself.
By intent I did all the conversion on my own time, and after I got everything working I sent the C Code to the authors in case anyone else ever asks.
@dhoerl
dhoerl / UIImage+WhiteImage.m
Created Sep 20, 2011
UIImage category to produce a new all white image from any other image. Useful to create white versions of darker icons for use in dark views.
View UIImage+WhiteImage.m
//
// UIImage+WhiteImage.m
//
// Created by David Hoerl on 9/14/11.
// Copyright (c) 2011 David Hoerl. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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