Answered
從column方向數字開始照順序累加，第1 Column 數字為1，第2 Column數字為2,3，第3Column數字為3,4,5，直到第10列矩陣完成，為上三角矩陣，有沒有比較快的方法呢?，
A=zeros(10); L=triu(true(10)); A(L)=1:sum(L(:))

2 years ago | 0

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作业求助
乘法要用乘号.*，不能像在数学表达式那样中省略乘号

2 years ago | 0

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Arduino Mega2560, Support Package for Arduino Hardware Test Connection Failed
Install Arduino IDE to see if you can upload a sketch.

2 years ago | 0

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slow imwarp with large arrays
There are two different levels of parallel acceleration in MATLAB, and you need to check if you are confusing them. Parallel po...

2 years ago | 1

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mex function: multiple definition errors
Enabling optimization means that the definition of some built-in macros will change, resulting in different compilation conditio...

2 years ago | 0

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在安装toolbox时显示无法访问安装路径，但是我的安装路径是全英文的也没有空格
检查你是否有安装路径的访问权限，相关目录是否被其它进程占用，以及你安装的是否是MATLAB官方工具箱。

2 years ago | 0

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how to create a function that generates random numbers from a product of two exponential distribution ? (i.e. like gamrnd() is for gamma distribution)
You can use exprnd to get an exponentially distributed random variable.

2 years ago | 0

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Fixing biased random number generation
It's a math problem. If you try to take a uniform random variable H as an upper bound on another uniform random variable a, then...

2 years ago | 1

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Subclass with dynamic method
classdef Combination<polygon properties(SetAccess=immutable) PolygonA PolygonB AIsQuadrangular BIsQuadrangular e...

2 years ago | 0

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Decode text with native2unicode
I bet this piece of binary can't be plain text encoded. Because there are no encoding methods that take 0 as a valid character, ...

2 years ago | 0

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why on earth does strlength(string.empty) evaluate to an empty matrix and not 0?
strlength for string is a vectorized function that can be applied to an array of string: >> strlength(["a","bb","ccc"]) ans ...

2 years ago | 1

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<< BitShift, Pow2 or standard multiplication? Code Optimization
If the algorithm of these functions executes literally, then bitshift is actually adding to the exponential segment of the doubl...

2 years ago | 0

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How to distribute runtime input values to two vectors?
function [a,b]=DistributeEvenOdd F = str2num(string(inputdlg('Enter a Vector','Vector',[1 50]))); while(numel(F) ~= 6) F = s...

2 years ago | 0

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How do I avoid using for loops in the following problem?
迭代类问题通常都不能向量化，因为循环之间存在依赖关系。

2 years ago | 0

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出现LINK错误，无法解决
编译MEX文件函数需要在链接时导入MATLAB静态库，通常在MATLAB安装目录\extern\lib下

2 years ago | 0

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How to use function like syms - solve to be executed for each data?
Your method of using for loops is wrong. The for loop iterates over the 2nd dimension, and the Gz(:) you use will expand into a ...

2 years ago | 0

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How can I define parameters and set them equal to each other dynamically?
If your equations are all linear, try using some linear algebra methods, such as rank.

2 years ago | 0

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I have a Fuzzy-C means function, is there a pro to explain it to me?
This MATLAB code implements the Fuzzy C-Means (FCM) algorithm for image segmentation. Here's an explanation of what the code doe...

2 years ago | 0

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Unload C++ shared library interface DLL
I think you're probably going to need to use the Windows NT API. It is true that there is no way to uninstall the clib in the of...

2 years ago | 0

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Running m file from VBA macro and getting results in excel
First of all, you need to know that it is impossible for MATLAB to execute your VBA code, and it is impossible for Excel to exec...

2 years ago | 0

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How to ratio the y component of two curves using an exponential fit?
I don't think your data are slightly different in terms of their y-component. They look very different in both x and y compone...

2 years ago | 0

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Live editor text formatting
When using fprintf in a live script, each line of output is independent. The output of your two calls will be placed in two text...

2 years ago | 0

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creating a 8x8 matrix with only -1
-ones(8) Append at 20241029 as a Cody challenge: rand(single('('-' ')) %You don't even need -1 in your code. This can be app...

2 years ago | 0

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how to download the third party support package file "xilinx linux binaries"
MATLAB自带的支持包下载器非常不稳定，经常出问题。建议你直接从硬件支持网站下载支持包

2 years ago | 0

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Error using strjoin when sending request URI
It looks like your version of MATLAB is too old and doesn't support string types yet. It is recommended to update to the latest ...

2 years ago | 0

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现在无法访问以前可访问的文件 "D:\APP\toolbox\matlab\images\imshow.m"。我应该是意外删除了这个文件夹，应该怎么办啊
回收站里找找，如果没有你就只能重装了

2 years ago | 0

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Import N excel files in N matrix, with name in function of a variable
DATA=arrayfun(@(Filename)readtable(Filename,opts),compose("DIR\NAME.000%u000.csv",1:N),UniformOutput=false); %If you insist on ...

2 years ago | 0

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Matlab JDBC drivers - How to pass a table variable equivalent to an SQL stored procedure
SQL PROCEDURE GENERALLY DOES NOT ACCEPT TABLES AS INPUT PARAMETERS, WHICH IS INDEPENDENT OF MATLAB. IN GENERAL, YOU NEED TO CREA...

2 years ago | 0

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EventDispatcher::dispatchPending: event [PathHasBeenRefreshedEvent] std::exception [foundation::storage::vfs::Exception]
I'd recommend that you use try-catch to save more detailed error information first. Exceptions=cell(YourIndex,1); parfor P=1:Y...

2 years ago | 0

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How to access the n-th caller workspace?
dbstack

2 years ago | 0

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