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nuttallwindowFFT
nuttall窗双谱线插值FFT算法实现电力谐波分析(electical harmonic analysis based nuttall window double-spectrum-line interpolation for FFT algorithms )
- 2020-06-28 19:40:01下载
- 积分:1
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zhouchengguzhangzhenduan
分形学习进行轴承故障诊断及各个震动数据的数据降维的方法(Fractal study conducted bearing fault diagnosis and the various vibration data dimensionality reduction method)
- 2020-11-26 10:29:31下载
- 积分:1
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UNITARY-ESPRIT-angle-estimate
面阵中二维角度估计 UNITARY -ESPRIT算法MATLAB程序(Two-dimensional planar array angle estimation UNITARY-ESPRIT algorithm based on MATLAB program)
- 2013-09-11 09:31:40下载
- 积分:1
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fuzzy_learning
implementing fuzzy system learning procedure in matlab
- 2012-12-03 20:45:27下载
- 积分:1
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DateConvert
DateConvert:简单而快速的日期转换
DateConvert转换DATESTR(0)格式的日期向量或序列号和日期向后。
Matlab的DATENUM,DATEVEC和DATESTR接受各种不同意见,但结果他们是缓慢的。如果输入格式正是众所周知,转换可以更快:
DATENUM( 17 - 10 - 2009 11时08分23秒 ):2.97秒
DateConvert( 17 - 10 - 2009 11时08分23秒 , 号码 ):0.039秒
=>“1.3%(1000环,1.5GHz的奔腾- M的,利用Matlab 7.7)
DateConvert不*不*验证作为Matlab的日期函数输入日期:
DATEVEC( 32 - 2 - 2008 25:62:63 )的答复[2008 3 4 2 2 7]
DateConvert( 32 - 2 - 2008 25:61:67 , 载体 )的答复[2008 2 32 25 61 67]!
因此DateConvert几乎微不足道,但对速度进行了优化。我需要时间排序200 000邮票,并从217个减少到11秒的时间。
请运行单元测试TestDateVec检查的有效性和速度。
测试:利用Matlab 6.5,7.7,7.8,winxp的,32位。
纯Matlab代码,所以兼容性的MacOS,Linux操作系统,64位预期。
英语月份名称是必要的。(DateConvert: Simple but fast date conversion
DateConvert converts the DATESTR(0) format to a date vector or serial date number and backwards.
Matlab s DATENUM, DATEVEC and DATESTR accept a variety of inputs, but in consequence they are slow. If the input format is exactly known, the conversion can be much faster:
DATENUM( 17-Oct-2009 11:08:23 ): 2.97 sec
DateConvert( 17-Oct-2009 11:08:23 , number ): 0.039 sec
=> 1.3 (1000 loops, 1.5GHz Pentium-M, Matlab 7.7)
DateConvert does*not* validate the input date as Matlab s date functions:
DATEVEC( 32-Feb-2008 25:62:63 ) replies [2008 3 4 2 2 7],
DateConvert( 32-Feb-2008 25:61:67 , vector ) replies [2008 2 32 25 61 67] !
So DateConvert is nearly trivial, but optimized for speed. I needed it for sorting 200 000 time stamps and reduced the time from 217 to 11 sec.
Please run the unit-test TestDateVec to check validity and speed.
Tested: Matlab 6.5, 7.7, 7.8, WinXP, 32bit.
Pure Matlab code, so compat)
- 2010-07-05 11:59:46下载
- 积分:1
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scale-space
sift算子中高斯金字塔和DOG的生成,只是该算子的最初步骤(sift operator:the generation of Gaussian pyramid and DOG。it is only the first steps)
- 2009-04-25 10:29:31下载
- 积分:1
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matlab-gui-serial-comunication
一个 gui 界面的 matlab 串口通信演示程序(A gui interface matlab serial communication demo)
- 2011-06-27 17:00:28下载
- 积分:1
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phto.m
Photo voltaic array design matlab ocde
- 2011-12-19 03:26:57下载
- 积分:1
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Randomly-Partitioning-Date-into-Training--Validat
TRain Val Test period selection in NN
- 2015-03-09 18:57:24下载
- 积分:1
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MakeAISegmentFilter
SEGMENT FILTER function for wavelet analysis
- 2013-05-15 03:20:02下载
- 积分:1