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Yuan Li


Last seen: 1年以上 前 |  2019 年からアクティブ

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質問


The number of m sequence of the fixed length 2^n-1
I wanner know the number of m sequence for the fixed length 2^n-1. The related reference will help, too. Thank you very much!

4年以上 前 | 0 件の回答 | 0

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How to cut dimensions of 3d arrays in a cell.
B = cell(34,1); for ii = 1:34 B{ii} = precips{ii}(700:720,300:360,:); end Then you will get a new cell, each element of ...

4年以上 前 | 0

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Is there a command ( like "sort" for example ) arranges vector elements ascending ,max, descending (humped shap)?
Yes. Use sort. e.g. a = [1,3,2,4]; b = sort(a,'ascend');% b = [1,2,3,4] c = sort(a,'descend');% c = [4,3,2,1]

4年以上 前 | 0

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How to generate a rectangular signal or wave of ?( ?/6 ) using the sign function.
t = 0:0.1:100; a = sign(sin(pi.*t./6)); figure,plot(t,a); ylim([-1.5 1.5]);

4年以上 前 | 1

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What actually this code explains? where it is used and how to interpret it?
In the signal processing field, y is the power of signal x. the square of 2-norm of x can be seen as energy of x, numel(x) is t...

4年以上 前 | 1

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Alphabetize by last name
Given a list of names in a cell array, sort the list by the last name. So if list = {'Barney Google','Snuffy Smith','Dagwood ...

4年以上 前

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Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

4年以上 前

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How to select every nth value with the last value fixed from a column?
use a = original_vector(1:100:4901);

4年以上 前 | 0

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Read a column of numbers and interpolate missing data
Given an input cell array of strings s, pick out the second column and turn it into a row vector of data. Missing data will be i...

4年以上 前

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How to break or split a line at NaN points in 1x15000 csv file?
You can start with finding the position of NaN, for example: a is your loaded data array; then use [m,n]=find(isNaN(a)); you...

4年以上 前 | 0

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About complex variables functions,a a ridiculous problem! who can help me?
You need to refer the Complex Function to answer the question. The second step to the third step is not like that in complex fun...

4年以上 前 | 0

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How can I change where a variable is placed within the field width using fprintf?
fprintf(fid,['%' num2str(length(q.labels{i})) 's\t'],q.labels{i}); change the code in the for loop will help you solve the prob...

4年以上 前 | 0

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How can i find the BER of 4-QAM ?
In the matlab command window, type "bertool", and choose some specific options, then you will get your curve.

4年以上 前 | 0

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Fill a vector based on another vector
A(1:sum(B(:))) = 0; I hope the code can help you.

4年以上 前 | 1

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taylor series using forward method
I can't figure out the relationship between the following codes: f(i)=(f(x + h(i)) - f(x))/ (h(i));% evaluating the derivative ...

4年以上 前 | 0

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For Loop using in an array to find the value one by one
Use matrix operation directly. F = 0.4*20 + A; Then, F will be the vector you want.

4年以上 前 | 0

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Averaging 3D matrix value and reshape
A = zeros(15,8,40); A = June21_Once_StillMat(1:end,2:9,1:end); A1 = mean(A,3); then you will get a 15by8 matrix(mabe you need...

4年以上 前 | 0

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Too many output arguments
I can get the result using r2014a. I used the same input in your screen shot.

4年以上 前 | 0