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# Yuan Li

##### Last seen: 17 días ago
18 total contributions since 2019

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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!

alrededor de 1 año ago | 0 answers | 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 ...

alrededor de 1 año ago | 0

| accepted

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]

alrededor de 1 año ago | 0

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]);

más de 1 año ago | 0

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...

más de 1 año ago | 1

Solved

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 ...

más de 1 año ago

Solved

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:...

más de 1 año ago

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

más de 1 año ago | 0

| accepted

Solved

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...

más de 1 año ago

How to break or split a line at NaN points in 1x15000 csv file?

más de 1 año ago | 0

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...

más de 1 año ago | 0

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...

más de 1 año ago | 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.

más de 1 año ago | 0

| accepted

Fill a vector based on another vector

más de 1 año ago | 1

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 ...

más de 1 año ago | 0

| accepted

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.

más de 1 año ago | 0

| accepted