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Binbin Qi


China University of Petroleum

Last seen: 11 jours il y a |  Actif depuis 2009

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Professional Interests: Machine Learning/ Math/ Geophysics

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  • MATLAB Central Treasure Hunt Finisher
  • Cody 5th Anniversary Finisher
  • Knowledgeable Level 2
  • Thankful Level 1
  • R2016b Feature Challenge Master
  • Divisible by x Master
  • Personal Best Downloads Level 2
  • First Review
  • Logic
  • Computational Geometry I Master
  • Matrix Patterns II Master
  • Introduction to MATLAB Master

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A répondu
Equivalent of c++'s NULL or python' s None in MATLAB
I think you can use class.empty for null in matlab classdef A < handle properties empty = A.empty; end end...

plus de 2 ans il y a | 0

A répondu
Finding the number of rows to the next row containing a 1
A = [0 0 0 1 0 1 1 1 0 0 0 0 0 1]'; C = find(A); D = (1:length(A)) - C; D(D>0) = D(D>0) + inf'; min(abs(D))' ans = ...

plus de 3 ans il y a | 2

A répondu
Create Incidence matrix from Graph theory?
ok >> G=digraph( [ 1 2 2 2 3 4] , [4 1 3 4 1 3]); >> I = full(incidence(G)) I = -1 1 0 0 1 0 ...

plus de 3 ans il y a | 1

| A accepté

A répondu
Create Incidence matrix from Graph theory?
>> G=digraph( [ 1 2 2 2 3 4] , [4 1 3 4 1 3]); >> full(G.adjacency) ans = 0 0 0 1 1 0 1 ...

plus de 3 ans il y a | 0

A répondu
Change date format in vector
t1 = datetime("4/1/2019 12:45:00 AM",'InputFormat',"dd/MM/yyyy HH:mm:ss a"); t2 = datetime("15/6/19 18:10",'InputFormat',"dd/M...

plus de 3 ans il y a | 0

| A accepté

A répondu
For loop and if else statements with multiple conditions
clear;clc;close all [m, n] = deal(4, 8); matrix_data = rand(m, n); num = ['1st','2nd','3rd', sprintfc('%dth', 4:8)]; for i =...

plus de 3 ans il y a | 1

| A accepté

A répondu
How to get specific values from matrix in column 1, based on values in other columns?
clear;clc;close all load sub-01_T2_planktimes R = accumarray(sub01T2(:,2:3)+1,sub01T2(:,1),[], @(x){x}); R{2,2} ans = ...

plus de 3 ans il y a | 0

A répondu
Histogram Only Plotting 1 Point
I think you can use bar, not histogram bar(error)

plus de 3 ans il y a | 0

A répondu
Dialog UI and sprintf creating unnecessary new lines
The following is my code. It is can work normally. Can you give your code here? function mydialog(line1,line2,line3) if narg...

plus de 3 ans il y a | 0

A répondu
How to genneral a repeat array
You can use repelem function to accomplish your question a = 1 2 3 4 >> repelem(a, 3) ...

plus de 7 ans il y a | 0

| A accepté

A répondu
How do I convert my .mlapp file into a .exe file?
you can get the main file and use deploytool command

plus de 7 ans il y a | 0

A répondu
change font size of subplot text
I use the following code, it can work clear;clc;close all subplot(335); fplot(@sin,[-1,1]); tx = text(.5,.5,'y = s...

presque 8 ans il y a | 0

A répondu
Area between two curves
if you can get the points of every curve, you can use *polyarea* function to get the area, and then diff

environ 9 ans il y a | 0

A répondu
why slow 5 times when tic or toc and expression in one line?
Thank you, I guess the reason is JIT.Now, I confirmed

environ 9 ans il y a | 0

Question


why slow 5 times when tic or toc and expression in one line?
when tic or toc and the main expression are in one line, it will be slow *5 times* than not in a line *1: tic or toc and the ...

environ 9 ans il y a | 2 réponses | 0

2

réponses

Question


How to get the same rand
recently,I do cody games,and I am in trouble about the problem 207:hackathon impossible the link is: http://www.mathworks.cn/ma...

presque 12 ans il y a | 1 réponse | 0

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