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埃博拉酱


Last seen: 4 days 前 |  自 2019 起处于活动状态

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已回答
how to vectorize a function?
^是矩阵幂运算，你这里需要的应该是元素幂运算.^

4 days 前 | 0

已回答
ezplot画出来的图中， Level 的值是什么东西？
ezplot作出来的是一个Contour，Level是它的层级

4 days 前 | 0

已回答
MATLAB如何生成如何产生两列具有相关系数为0.5的X Y 的数据。
% 定义均值和协方差矩阵 mu = [0; 0]; Sigma = [1, 0.5; 0.5, 1]; % 生成正态分布数据 N = 1000; % 定义样本数量 Z = mvnrnd(mu, Sigma, N); % 将正态分布数据转...

4 days 前 | 0

已回答
MATLAB算积分。
因为你这个积分没有解析解。你要算数值解得把y转换成double。

4 days 前 | 0

已回答
Usage of spmd in matlab
建议你学习一下DataQueue和PollableDataQueue 以及SPMD的一系列辅助函数

6 days 前 | 0

已回答
clearing a persistent variable makes it no longer persistent
You can use deal to set multiple variables to the same value at once (such as an empty value, in your case). Using clear in a fu...

4 months 前 | 0

| 已接受

已回答
Matlab got this wrong: Limit as n goes to infinity: (1+(i/n))^(n^2). Matlab says it's exp(2), which is wrong. Pls confirm.
I recommend consulting technical support. It's probably a bug.

4 months 前 | 0

| 已接受

已回答
how do i display text in command window matlab LiveScript?
T=toc; timer(TimerFcn=@(~,~)display(T),StartDelay=0.1).start;

4 months 前 | 0

已回答
Operator '+' is not supported for operands of type 'function_handle'.
Only symbolic functions can be added directly. You may need to refer to Symbolic Math Toolbox.

1 year 前 | 0

提问


Is there a way to map the GPU number of the gpuDevice to the GPU number in Windows Task Manager?
Our GPU server is shared by multiple people. I hope to avoid using the GPU that is being used by others. The main method is to c...

1 year 前 | 1 个回答 | 1

1

个回答

已回答
Cannot clear mex with an existing DesktopWindowTarget
Although I don't know the principle, I solved the problem. Simply move the resource release code into the destructor of MexFunct...

1 year 前 | 0

| 已接受

提问


Cannot clear mex with an existing DesktopWindowTarget
I'm trying to create a window and display a user-supplied image using the C++ MEX function: (Just a small snippet of code to ill...

1 year 前 | 1 个回答 | 0

1

个回答

已回答
用image画图时，无法用caxis调节colorbar范围，使用的是R2019a版本
你需要改用imagesc

1 year 前 | 0

| 已接受

已回答
how can I reduce the computational time of a single for loop in a Matlab code
It seems that you are calling knnsearch twice in each loop to search for a single point in the point cloud. However, knnsearch c...

1 year 前 | 0

已回答
I have data for each milli second. How can I average the 1000 samples and convert in to 1 sec? I got 322 sec data. 1K samples for each second.
You may want to use imresize： Table=readmatrix('ms_to_sec.csv'); Table=imresize(Table,[322,2]); Table(:,1)=1:322;

1 year 前 | 0

已回答
Convert negative values to positive values in the graph
It depends on the meaning of negative values and how they are generated. From your graph, your data appears to be oscillating w...

1 year 前 | 0

已回答
shannon entropy and entropy of grayscale
Entropy.m is open source, why don't you just check out its source code? edit entropy

1 year 前 | 0

已回答
speed up for loop
When it comes to file I/O operations, parfor is usually not very helpful because the disk is always single-threaded. In contrast...

1 year 前 | 0

| 已接受

已回答
in this linear matrix. q_1, q_2....the input matrix are 1*11 double. all the F2y,F3x...in the out put are 1*11 double. I want to solve the Sol for each value of input ,output
Sol=cell(1,11); for a=1:11 Sol{a}=GetOneSol(q_1(a),q_2(a),q_3(a),q_4(a),q_5(a),q_6(a),q_7(a),q_8(a),q_9(a),q_10(a),q_11(a)...

1 year 前 | 0

已回答
How to push data to a website?
It depends on how your website server is configured. No one can tell you how to push messages to the server without knowing the ...

1 year 前 | 0

已回答
C++ API: How to convert ArrayElementRef to Array?
In MATLAB, an element of an array is also an array. However, in C++, an element is not an array. matlabArray[i] is taking an el...

1 year 前 | 0

| 已接受

已回答
Please help to solve: Index in position 1 exceeds array bounds. Index must not exceed 1.
Your audio_signal is an 1×n row vector but you're trying to get its start_index:end_index rows.

1 year 前 | 0

已回答
"Input parser" vs. new "arguments" definition
The biggest advantage of the arguments block is readability, but it is far less flexible than varargin. People who are not famil...

1 year 前 | 1

已回答
textscan(fid,'%s','delimiter',{'\r','\n'}) lost a Tab located in the very beginning of 1st row of text file
Specify Whitespace='' in textscan.

1 year 前 | 1

| 已接受

已回答
separate y axis on right and left (even and odd data) with IMAGESC
Preprocess your data like: reshape(RateR_new.Flux(:,1),2,[])' Not sure if this is what you want. If not, it's best to draw a d...

1 year 前 | 0

| 已接受

已回答
Getting Help to open in new tab of the default browser as opposed to built-in browser
I was never able to invode the OS browser with F1. Can you give a definite example to prove that you are not mistaken?

1 year 前 | 0

已回答
How do I multiply a given function handle with the independent variable?
Use symfun and int in Symbolic Math Toolbox if you want to do integrals.

1 year 前 | 0

已回答
Am I running in parallel? (best way to check)
parallel.internal.pool.isPoolThreadWorker||~isempty(getCurrentJob)) This code can robustly return true if and only if run on a ...

1 year 前 | 4

已回答
How to Generate Database from Cell array In Table form in MATLAB
cell2table

1 year 前 | 0

已回答
Saving output files as input file names while running though a for loop
filenames = struct2table(dir('*.csv')).name; %%% Start looping over files for k= 1:numel(filenames) X= readmatrix(filenam...

1 year 前 | 0

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