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how to change a number randomly???...
labels(randperm(numel(labels)))

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I have a curve which follows the relation P(f)=P(o)f exp(-a). How can I get the value of 'a'. Please help me bi giving your valuable solutions
a = -Ln(P/(P_0*f))

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white grid on black axes?
set(gca,'col','k','xcol','w','ycol','w')

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How can I substitute a function into another equation to plot the answer?
f = @(a) (2048 + 128*a.^6 + a.^12 + sqrt(16384 + 2048*a.^6 + 80^12 + a.^18)).^(1/3); r =@(a) (1/16)*( a.^4 + a.^8./f(a) + f...

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How can I count the number of occurences of elements within vectors from randsample?
POP = 'abcdefghijklmnop'; N = 1000; M = 5; x = zeros(N,M); for a = 1:N x(a,:) = randsample(POP,M); % Eac...

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how to assess the standard error of coefficient estimates with regress function
Was your other question answered sufficiently? If so, please accept the answer and close that question before asking it again.....

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array shifting problem, help
V = [6 5 4 3 0 1 2 4 0 0 0] V = [V(2:end-1) 0]

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Find a row in a matrix in faster way
Here is a faster method, in the script I use to compare: M1 = rand(1000,8)>.5; M2 = rand(1000,8)>.5; tic % M...

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Why after plotting on axes the ButtonDownFcn doesn't work?
>> AxesH = axes('ButtonDownFcn', 'disp(''Axes click!'')'); Axes click! Axes click! >> plot(1:10) % Now clicking doe...

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Using multiple strings to name a variable
*Don't do it!* It is highly recommended that you do not create variables this way, as you will have no end of trouble dealing w...

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How to calculate R-square using robust linear regression function
[brob, rob_stats] = robustfit(x,y); rsquare = corr(y,brob(1)+brob(2)*x)^2

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i have two array x=[1 6 8 9],y=[3 6 9 14],then i plot (x,y) in matlab. i have no linear equation of x,y. i have only above array of x and y. if value of x is 4 then what is the value of y. is it possible using logic?
x=[1 6 8 9]; y=[3 6 9 14]; interp1(x,y,4,'linear')

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Error: 'model' parameter must be a string."what should I do?!!!
From the help (which you can read too!): _SimOut = sim('MODEL', PARAMETERS) simulates your Simulink model, where 'PARAMETERS'...

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How can I change axes labels?
set(gca,'ydir','normal')

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Simple question about vector remainders
y = mod(x,20).*(x>20) % if no x>40 Or if some value may be greater than 40, y = max(x-20,0)

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surfs and meshplot problem
[M,EPS] = meshgrid(1:30,11:40); v = 3; Z = exp(M.*log(EPS)+v.*EPS); surfc(M,EPS,Z) set(gcf,'render','zbuf')

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Unwanted figure transparency in Windows 7
It might help if you set the renderer to zbuffers. set(gcf,'render','zbuffers') But if you have any transparent graphi...

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how to do a TRENDLINE (polyfit?how?)
See the help for the <http://www.mathworks.com/help/matlab/ref/polyfit.html POLYFIT> function. I see you edited the question ...

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Print a message if a condition is met
x = [1;2;3;4]; p = [1.5;3.5;3.2]; idx = x(1:end-1)<p & p<x(2:end); SOL = p(idx)

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Key presses associated with colour
I have no idea what you are doing by looking at the code as there is too much left out. But from your description, this _might_...

11년 초과 전 | 1

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Hello! How can I make MATLAB return the smallest, positive, purely real value from a column matrix?
Uf = [0.84888 + 0.74301i -1 0.31434 + 1.1736i 0.31434 - 1.1736i 3 -0.4...

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How to find the location of a minimum value in cell array?
L = cellfun(@(x) find(x==1),q,'Un',0); Now L has all the information you need.

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How to create a personalized colormap?
You can easily do it. Make the surface go from white to red as you say... peaks(100); set(findobj('type','surf'),'e...

11년 초과 전 | 0

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Sum of previous elements in a matrix(dynamic way)
Say your matrix is like: A = [1 2 3; 4 5 6; 7 8 9; 10 11 12; 13 14 15; 16 17 18]; ...

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Change Default White for Zero in Contour Plot
That produces no contour plot at all... C = contourf(longitude,latitude,temp) Warning: Contour not rendered for constant...

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Plotting [1,n) cell arrays against each other
Try your code without calling the AXIS function. Judging by your data you do not have cell arrays, you have numeric arrays and ...

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How to change the number of digits over 15.
digits = 40; % Only works if you have the symbolic toolbox But this only applies to symbolic variables. You cannot get mo...

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Best way to rename a loaded variable?
Say you have the name of your variable: VAR = 'S'; Now you want to load that variable, but with the name T. This method...

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How to remove a value from a vectort and revaluate it?
There is no need to pre-allocate M, as M is not built in a FOR loop. You are just overwriting the pre-allocation in one call, s...

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Plotting with different colored markers
You can set the linestyleorder. clf set(gca,'linestyleorder',{'-',':','-.','--'},... 'colororder',[0 0 1;0 .5 0;1...

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