matlab的常見問(wèn)題-wenkub.com
2025-06-06 21:25 本頁(yè)面
【正文】 DataFit可以自定義擬合模型，適用于復(fù)雜系統(tǒng)的擬合。然后是程序的優(yōu)化，看看變量是否占用太多內(nèi)存，看看是否有功能重復(fù)的模塊或者計(jì)算，經(jīng)常的是用犧牲內(nèi)存來(lái)?yè)Q取速度，具體取舍，具體需要來(lái)決定。一個(gè)程序運(yùn)行快慢，有很多因素決定，最主要的是算法，簡(jiǎn)煉而優(yōu)美的的數(shù)學(xué)公式勝過(guò)100遍的優(yōu)化。color39。plot(rand(1,10),39。position39。)34)Matlab如何加載輸入文件(批處理模式) ？:翻譯自： FAQ. BigGreen/en_MatlabPC上可以使用matlab /r參數(shù)來(lái)在matlab啟動(dòng)的時(shí)候直接加載運(yùn)行m文件，在UNIX上，使用matlab MyMFile MyOutputFile來(lái)外部執(zhí)行MyMFile，以上執(zhí)行方式都可以通過(guò)腳本文件實(shí)現(xiàn)批處理35)Matlab如何啟動(dòng)時(shí)執(zhí)行規(guī)定的文件？:FangQ(), 2002/5/參見上一個(gè)問(wèn)題的回答36)如何在Matlab GUI中使用圖形背景？:FangQ(), 2002/5/這是一個(gè)簡(jiǎn)單的例子：[A,map]=imread(39。)。Curvature39。28)Matlab中有沒(méi)有畫圓或橢圓的函數(shù)？:FangQ(),2002/6/21,BigGreen/MathTools 沒(méi)有，Matlab沒(méi)有提供直接繪圓的圖元函數(shù)，需要自己寫代碼，其實(shí)就兩句：sita=0:pi/20:2*pi。)。xdata39。具體請(qǐng)看工具箱自己代的README文件。freed39。18)如何在Matlab中畫隱函數(shù)曲線？:FangQ(),2002/6/21,BigGreen/MathTools 在查找implicit，會(huì)找到一個(gè)Arthur Mathematica中繪制隱函數(shù)用ImplicitPlot[]或者ImplicitPlot3D[]Maple中為implicitplot(),implicitplot3d()參見~fangq/MA...source/Implicit19)Matlab中什么函數(shù)可以刪除矩陣的某一行或列？:FangQ(),2002/6/21,BigGreen/MathTools A(j,=[]。,Value)或者在X:\matlab\toolbox\local\set(0,39。toc或者使用t=cputime。R = sqrt((a(1)^2+a(2)^2)/4a(3))。 sum(xx.*x+xy.*y)]。sum(xy) sum(yy) sum(y)。 xx=x.*x。p(1)為斜率a，p(2)為截距b多元線性回歸即用y=a1*x1+a2*x2+..+am*xm來(lái)擬合數(shù)據(jù)點(diǎn){x1i,x2i,…xmi,yi} (i=1~n)|x11,x21,…xm1|A=|x12,x22,…xm2||…………… ||x1n,x2n,…xmn|Y={y1,y2,y3,…,yn}39。,haxis)。,haxis)。Solution Number: 26990Date Last Modified: 20010130Product: MATLAB == Current VersionPlatform: WindowsProblem DescriptionWhy do I encounter problems when running MATLAB (R12) on Hebrew orTraditional Chinese (Taiwan) Windows? I try to start MATLAB but afterthe splash screen disappears, MATLAB exits.PLEASE NOTE: This solution only applies to MATLAB . If you have asimilar problem with MATLAB or the Student Edition of MATLAB ,see solution 7213.Solution:This problem is caused by a bug in one of the font properties files we shipwith MATLAB. The file is used by Java to map the standardJava font names to system fonts for a particular language operating system.However, we made a few assumptions that do not hold for the Hebrew orTraditional Chinese Windows, causing this problem.We have created a fixed version of the file that you can use tocorrect this. To use the fix, first rename your file as .This file is found in the $MATLAB\java\jar directory, where $MATLAB is yourMATLAB root directory. Then download the newer file from:ftp://and place it in your $MATLAB\java\jar directrory. Then restart MATLAB。this should correct the problem you39。或者h(yuǎn)bar=bar(data)。4)由Matlab符號(hào)運(yùn)算得到的公式怎么才能將數(shù)據(jù)代進(jìn)去運(yùn)算？:ramjet (德芙)2002/3/3, SMTH/MathTools 使用subs(),或先將值賦予一個(gè)符號(hào)變量，然后用eval()5)在Matlab中如何求最值點(diǎn)？如何求一維數(shù)組的極值？:FangQ(),2002/6/18, SMTH/MathTools 最值：一維或多維數(shù)組最值用max(data()如果想返回最值所在的位置，用[Y,I]=max
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