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# KSSV

### INCOIS

6,649 2011 이후 총 참여 횟수

Professional Interests: Mathematical Computing

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complex function inverse plot
On solving it manually....we have: y = 1/(log(x)-0.1) ; x = exp(1/y+0.1) ; To plot: y=[5:0.01:6] ; x = exp(1./y+0.1) ; ...

약 14시간 전 | 1

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MATLAB function that is equivalent to Maple's match function?
syms s ; A = 1; B = -1; LHS = 1/s-1/(s+1) ; RHS = A/s+B/(s+1) ; m = isequal(LHS,RHS) ;

약 16시간 전 | 0

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How to concatenate matrix in a loop
If the size of matrix is same always. iwant = zeros(95,13,5) ; for i = 1:5 iwant(:,:,i) = rand(95,13) ; end If the size ...

약 16시간 전 | 0

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How can I fetch data from one matrix into another matrix?
[idx,ia,ib] = ismember(B(:,1),A) ; C = B(idx,:)

약 18시간 전 | 0

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how to superimpose matlab plot on a geotiff image.
Use hold on and plot.

약 19시간 전 | 0

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"Array indices must be positive integers or logical values." Error Message
((a(1-e^2)) This is not correct......I think you want ((a*(1-e^2)) close all clear clc %establish COEs a = 15000; e = ...

약 20시간 전 | 1

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Filtering through multiple vectors for a single set of values
1) Identify the common integer at the beginning of the vector sets between Q1 - Q6 (in this case, 3) Read about unique for this...

약 22시간 전 | 0

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Where can I find the earthquake data 'kobe' ?

약 22시간 전 | 0

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How to find mean of selected values in a table with row gap???
Let A be your 98816X1 column. N = length(A) ; n = 512 ; B = reshape(A,n,[]) ; iwant = mean(B) ;

약 22시간 전 | 0

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how can I solve this problem?
idx = x ==1 ; y(idx) z(idx)

약 22시간 전 | 0

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Making a Function for matrix
iwant = (max(A,[],2)-min(A,[],2))'

3일 전 | 0

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Averaging z values for xy gridded data
A = [60.0000 50.0000 170.0000 180.0000 -16.1680 60.0000 50.0000 170.0000 180.0000 -8.6020 70.0000 60.0000 ...

3일 전 | 0

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How do I sum the elements of each corner of a matrix?
iwant = A(1,1)+A(1,end)+A(end,1)+A(end,end)

4일 전 | 1

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Interpolation Question Regarding Value Alignment
Let t be your 4 seconds sampled time and y be your respective data. dt = 3 ; ti = min(t):dt:max(t) ; yi = interp1(t,y,ti)...

4일 전 | 0

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I wish to integrate this expression
syms V T v U r S C t f = (V/(9.81*(T-T*V/v)-U*r*S*C(t^2-V^2)/2)) ; int(f,V)

7일 전 | 0

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I need to plot a trajectory, of a point on circumference of a circle moving around its centre and centre is moving along its x-axis.
% cicle th = linspace(0,2*pi) ; r = 1. ; xc = r*cos(th) ; yc = r*sin(th) ; % center of circle movine along ax axes x...

7일 전 | 0

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Searching point unknown on the grid

8일 전 | 0

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Removing zeros from a binary array if length of zeros is lesser than a value
input = [0;0;0;0;0;0;0;1;0;1;1;1;0;0;0;0;0;0;1;1;0;0;0;0] ; idx = input==1; % get the locations of 1 % split zeros and on...

8일 전 | 0

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how can i change this code
in = 0 ; pivot = table(in,index); In the above line you have indexed in to zero. There is no zero and negaitve indices in MAT...

8일 전 | 0

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How to take the inverse of each individual array value and store it to a new array?
If R is value, if you want inverse use C = 1/R ; If R is an array use: C = 1./R ; In your case..use Conductances = 1....

8일 전 | 0

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selecting specific rows from a matrix corresponding to the columns of other matrix
Let A abd B be your matrices of size 40*2 and 25000*9. [m,n] = size(A) ; C = cell(m,1) ; for i = 1:m C{i} = B(A(i,1...

8일 전 | 0

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Vector plot over a surface plot
TT = hypot(qx, qy); figure() pcolor(x, y, TT); xlim([-7 7]); ylim([-5 5]) colormap jet colorbar view(2) hold on quiver(...

8일 전 | 0

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Calculate the length of symbolic expression
S = char(df) ; % convert sym to string idx = strfind(s,' ') ; % get empty spaces S(idx) = [] ; % remove the mepty sp...

9일 전 | 0

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how to plot euler formula in matlab?
i = linspace(0,1,100) ; y = exp(100*i*pi) ; plot(i,y)

9일 전 | 0

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K-Means Matlab cluster assignment
If idx are the indices and P are the points you have. figure hold on for i = 1:4 plot(P(idx==i,1),P(idx==i,2),'.') ; ...

9일 전 | 0

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How can I limit a set of input data, 6 values, to a min and max point and as an integer
if min(user)<1 || max(user)>59 error("Check the input") endif

9일 전 | 1

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Error to applying ismember for cell arrays
load("example.mat") ; N = length(A) ; A1 =zeros(N,1) ; for i = 1:N A1(i) = str2num(A{i}') ; end B1 = cell2mat(B)' ;...

9일 전 | 0

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Converting flowchart to matlab code
x = 0 ; % your initial x value y = 100 ; % your fixed y value t0 = 0 ; % initial time dt = 0.00025 ; % time step t =...

9일 전 | 0

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How do i find the intersection between two torus ?

9일 전 | 1

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Make coastline contour from DEM (3d matrix)
[c,h] = contour(dem,[0.5 0.5]) ; % filter c idx = c(1,:)<1 ; c(:,idx) = NaN ; figure pcolor(dem) ; shading interp ;...

9일 전 | 0

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