When working with mathematical simulations or engineering problems, it is not unusual to handle CURVEs that contains thousands of points. Usually, displaying all the points is not useful, a number of them will be rendered on the same pixel since the screen precision is finite. Hence, you use a lot of resource for nothing! This article presents a fast 2D-line approximation algorithm based on the Douglas-Peucker algorithm (see [1]), well-known in the cartography community. It computes a hull, scaled by a tolerance factor, around the CURVE by choosing a minimum of key points. This algorithm has several advantages: 這是一個基于Douglas-Peucker算法的二維估值算法。
標(biāo)簽： mathematical engineering simulations problems
上傳時間： 2013-12-20
上傳用戶：changeboy
局部線性嵌入法，用于數(shù)據(jù)降維 .lle.m -- A simple matlab routine to perform LLE. .sCURVE.m -- Code to run the "s-CURVE" example. .swissroll.m -- Code to run the "swiss roll" example.
上傳時間： 2016-07-28
上傳用戶：15071087253
im2dat.m is used to convert images to data which can be plotted using the standard MATLAB functions. This is very handy if you have plots on hardcopy and you want to convert them into data that MATLAB can use. The scanned image can be analysed by this function and the output will allow you to perform any calculation/manipulations that MATLAB can perform, e.g. CURVE fitting.
標(biāo)簽： functions standard convert plotted
上傳時間： 2014-12-07
上傳用戶：gdgzhym
What I am trying to introduce here is a full fledged Java Instant messenger, which has all the features supplied by commercial messengers like Yahoo or MSN. Although it cannot compared to be in par with those messengers, it is an attempt by me to learn Advanced Java and JNI concepts. The challenges I faced here were often overcome by referring to numerous sites, which nearly zeroes in or completely solved the issues I faced at that point of time. It improved my learning CURVE and also believe would do the same to you too. Ofcourse, there are some bugs and glitches, which I hope you would excuse. Thanks to anyone who takes the pain to report them or even suggest better way of doing things to me.
標(biāo)簽： introduce messenger Instant fledged
上傳時間： 2014-12-05
上傳用戶：電子世界
如果數(shù)據(jù)庫系統(tǒng)（ database systems）像受人尊敬的智者講述的條理清晰的故事，那么工作流（workflow）就像一群乳臭未干的小子在大談各自的“哲理”。之所以這樣講，我是想指出，工作流系統(tǒng) （workflow management systems）還處于技術(shù)發(fā)展曲線（ technology hype CURVE ）上的初級階段。在這個領(lǐng)域我們將面臨一個激動人心的階段。為了描述這一點，可以和關(guān)系數(shù)據(jù)庫系統(tǒng)（RDBMS）做一個對比。當(dāng)在軟件開發(fā)團隊中談?wù)揜DBMS時，大部分人會有一個清晰的概念，在你和他們交流的時候，人們會通過輕微的點頭表示認可或理解你所說的?？僧?dāng)使用工作流術(shù)語討論工作流時，他們會搖頭表示不同意，因為每個人對工作流術(shù)語都有不同的理解。
標(biāo)簽： database systems 數(shù)據(jù)庫系統(tǒng)
上傳時間： 2013-12-23
上傳用戶：498732662
Basic function to locate and measure the positive peaks in a noisy data sets. Detects peaks by looking for downward zero-crossings in the smoothed third derivative that exceed SlopeThreshold and peak amplitudes that exceed AmpThreshold. Determines, position, height, and approximate width of each peak by least-squares CURVE-fitting the log of top part of the peak with a parabola.
標(biāo)簽： peaks function positive Detects
上傳時間： 2017-04-26
上傳用戶：彭玖華
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