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# Kuifeng

Last seen: 3ヶ月 前 2016 以来アクティブ

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How to calculate different velocity zones
I believe the categorical function is what you ware looking for. Check categorical function and check 'Bin Numeric Data into Cat...

5年弱 前 | 0

Implementing a step response within for loop environment?
How about trying to introduce heaviside(x) function in the sig calculation? If certain condition is met, then apply the addition...

5年弱 前 | 0

How to build a matrix like this
The following works, not the 'best' way... n = 5; A = [n:-1:1]'; for i = 2:n A(:,i) = A(:,i-1); A([1:i]...

5年弱 前 | 0

Simple simulation of stock price
In the loop, does this answer to your question? for i = 1:1000 S_1(i+1) = S_1(i)*(1+r*dt+sigma*wp*normrnd(0,1)); ...

5年弱 前 | 0

Please help: In an assignment A(I) = B, the number of elements in B and I must be the same.
depths = zeros(1,41); %it has 41 elements and P(j) is one element. % maybe you wanted to use depths(j)?

6年以上 前 | 0

How to edit my scatter plot legend?
plot(linspace(1,5,21), Intact..., 'b*',linspace(6,10,21), D1b..., 'go',... linspace(11,15,21), D2b..., 'k^',linspace(16,20,21)...

6年以上 前 | 0

How to plot average monthly data from excel using matlab R2013a?
ydata = [jan feb mar apr may jun ... jul aug sep oct nov dec]; %it should work. %other options, make a matrix of 12 columns r...

6年以上 前 | 0

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how to set some column or row in matrix to another random matrix?
S_rand(selected_row, :) = A(selected_row, :); S_rand(:, selected_col) = A(:, selected_col);

6年以上 前 | 0

Display Data From a Matrix or Table with Colour Scale
doc contourf %it shows filled contour

6年以上 前 | 0

How to remove duplicates from a matrix without using unique?
% use the function ismember for each column, and it would help doc ismember

6年以上 前 | 0

How can i make a normal distribution plot of a dataset with 1000 numbers, that also shows the mean and variance?
%1 try the function pdf? see help for more description % hist is also a possible function for the 1000 data.

6年以上 前 | 0

How can I skip right to the end of a script?
help break %does this help?

6年以上 前 | 1

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Problem with importing data: specifier "dd" does not include the 31st day of the month
data = importdata('brue0001.dat');

6年以上 前 | 0

please i need all iteration in one vector
inc = 120; accy(length(accy)-rem(length(accy),inc)+1:end) = []; accy_2D = reshape(accy, inc, (length(accy)-rem(length(accy),i...

6年以上 前 | 0

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Runge Kutta 4th order, Error: Subscripted assignment dimension mismatch
%y(:,1) is the first column, and %[0.5,0,0,50] is a row vector. consider y(:,1)=[0.5,0,0,50]';

6年以上 前 | 0

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How do i plot a line at a single desired point on the X-Axis?
%at point x0 = 6, vertical line x0 = 6; plot([x0 x0], [min(y), max(y)], 'r-'); %revise the y values to your desired values

6年以上 前 | 0

it is showing not enough input arguments
%Remove the following lines from the code clc ; clear ; close a l l ;

6年以上 前 | 0

positive number produced from calculation
abs(0.33-0.42)

6年以上 前 | 0

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how i can put the (-1) in binary matrix with condition ?
% is the last number in your A* equal to 0 instead? %the following code may work [rows cols] = size(A); A_diff = A(:,1:end-...

6年以上 前 | 0

multiple loopings in a program
a = input('Input the value of a: '); Range1 = [1 7]; str = strcat('Input the value of a again as a needs to be in the range f...

6年以上 前 | 0

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How can I upgrade the multi variable integration?
%see example of matlab, use double or triple trapz, F = X.^2 + Y.^2; I = trapz(y,trapz(x,F,2))

6年以上 前 | 0

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How will I convert a image into binary image?
doc im2bw

6年以上 前 | 0

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How to increase the speed of this code?
% 1. use vectors instead of the for loop to calculate distance, example dist = sqrt(x.-xCenter).^2.+(y.-yCenter).^2.+(z.-zCent...

6年以上 前 | 0

How to vectorize the following for...loop?
% maybe make some changes to the following code could help, [rows cols] = size(ans); v1 = v(1:rows-1, 1:cols-1); v2 = v(...

6年以上 前 | 0

Importing data from excel
%maybe the function 'size' is what you required. [rows cols] = size(A); for i = 1:rows for j = 1: cols ... end end

6年以上 前 | 0

plot 2 ( Stems / Histograms ) in the same axis
%1 use the 'hist' function to get the vertical axis for two arrays. %2 use the function 'bar' to plot

6年以上 前 | 0