埃博拉酱

Last seen: 12日前 | 2019 年からアクティブ

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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...

3ヶ月前 | 0

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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.

3ヶ月前 | 0

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

3ヶ月前 | 0

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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.

約1年前 | 0

質問

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年以上前 | 1 件の回答 | 1

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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年以上前 | 0

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質問

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年以上前 | 1 件の回答 | 0

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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年以上前 | 0

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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年以上前 | 0

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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年以上前 | 0

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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年以上前 | 0

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

1年以上前 | 0

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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年以上前 | 0

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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年以上前 | 0

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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年以上前 | 0

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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年以上前 | 0

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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年以上前 | 0

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"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年以上前 | 1

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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年以上前 | 1

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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年以上前 | 0

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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年以上前 | 0

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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年以上前 | 0

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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年以上前 | 4

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

1年以上前 | 0

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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年以上前 | 0

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Automatically create variable names
NameIndex=1; Value=2; eval(sprintf('Name_%u=%d',NameIndex,Value)); This is possible by eval but as mentioned in the comments ...

1年以上前 | 0

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MEX file debugging with MS Visual Studio
As @Friedrich said, MEX file functions are loaded dynamically, so the function needs to be called once in MATLAB to load symbols...

1年以上前 | 0

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Compare strings which contains the same pattern by ignoring case sensitivity and some expressions like underscores
You might remove those expressions to be ignored and unify the strings all to lowercase before doing actual comarison.

約2年前 | 0

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How to I create variables with different names in the workspace using for loop?
You're too new to MATLAB to write any actual code. Learn your first course on https://matlabacademy.mathworks.com/ before doing...

約2年前 | 0

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数值索引和逻辑索引哪个更快？
测试方法测试函数： function IndexingTest(FullNumber,SelectNumber) Set=false(FullNumber,1,'like',logical(FullNumber)); Index=cast(ran...

2年以上前 | 0

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