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How can i draw the graph?
vectors x and y contain your data plot(x,y,'k.'); If you only have the ydata, just type plot(y,'k.'); This holds t...
environ 11 ans il y a | 0
Taking derivative an array which is a numerical value with respect to another array
if f is the vector representing f(x) and x contains the corresponding abscissae df = diff(f)./diff(x) note that this has ...
environ 11 ans il y a | 0
Count the number of sequential fractional *nines* of a decimal number
You could turn your numbers into strings, like e.g. in st = sprintf('%1.10f',A(1)) maybe strip the trailing "0." (if they...
environ 11 ans il y a | 0
| A accepté
rearranging matrices horizontally rather than vertically
This is because the index order in a matrix is along columns. I'm not sure your command does what you say. Anyway b= [4 1 ...
environ 11 ans il y a | 2
| A accepté
Returning all Eigen Vectors including non-unique ones
Not sure what you mean... eig does return all of the eigenvectors and eigenvalues. Do you mean that you need to know the dege...
environ 11 ans il y a | 0
How to plot point x on a line
Not sure what you are asking, nor what your function is expected to do. I guess x1,x2,y1,y2 are scalars (otherwise you're lik...
environ 11 ans il y a | 0
I'm having trouble suppressing duplicate numbers. Can someone please help me to fix this within my while loop?
M=zeros(1,5); for i = 1:5 done=0; while ~done V=input('Enter a number between and incl...
environ 11 ans il y a | 1
basic monte carlo question: area of circle
You are mixing things up. Your code is part vectorized, part scalar. You have a loop over N, but then at each iteration you g...
environ 11 ans il y a | 3
| A accepté
How to saving data to file in different path in matlab?
You are using "-append". That means that 'hafizah.dat' should already exist. Does it exist? According to matlab it does no...
environ 11 ans il y a | 0
How to create a patch object without actually plotting it.
h=patch(X,Y,Z,'r','visible','off'); and then, when you need it set(h,'visible','on');
environ 11 ans il y a | 1
| A accepté
How can I use for loop for assigning variable names?
what's wrong with using matrices? Something like acc = data(:,2:6); pot = data(:,8:16); acc0 = detrend(acc); and s...
environ 11 ans il y a | 0
Why does my surface have a 'jagged' look when I do this?
Hi Of course, making the grid thicker reduces the jaggedness. As far as you are plotting planes, you can easily obtain n...
environ 11 ans il y a | 0
Creating random order of trials (numbers in a matrix) with restrictions
So you need a 5x50 matrix of numbers between 1 and 10, such that: - all the numbers in the first column are different - no n...
environ 11 ans il y a | 0
Simple Question: How to graph certain surfaces depending on the Z value?
You could set the points that do not meet your constraint to NaN; i = Z1<5; Z1(i)=NaN; i = Z2>5; Z2(i)=NaN; The r...
environ 11 ans il y a | 0
| A accepté
Summation of an infinate series
That can be done in 3 lines of code tops. However, giving you the solution for your assignment straight away does not seem fair...
environ 11 ans il y a | 0
| A accepté
Replace some values of a vector with another vector which has a different size
b=zeros(size(source)); b(find(source))=a; of course this works only if the number of nonzero elements in source are the sa...
environ 11 ans il y a | 1
How to implement sum of sines using matricies
You could try Y = a*sin(f'*t); where a and f are the row vectors for the amplitude and frequency of your sines, an...
environ 11 ans il y a | 0
Save plot is not the same as plot on screen
Hi, this happens to me too. I found that I need to specify everything explicitly (XTick, YTick, Xlim, Ylim for the axes, ...
environ 11 ans il y a | 0
change x axis, i have a plot of data from a headset. then i have 5 lines from a game, so i want 0-time from start(green) line till the end(red line), is it possible?
Not sure what your asking for. Do you need to re-define the limits of your x-axis so that they go from the green to the red ...
environ 11 ans il y a | 0
| A accepté
randperm in while loop
If I get it right, you want a vector A that is "divided" into bunches of 3 consecutive elements. Each of these "bunches" should...
environ 11 ans il y a | 1
i want to determine common sub sequence on array
You can use the builtin function "intersect" i = intersect(a,b); i = intersect(i,c); [...] i = intersect(i,h) The l...
environ 11 ans il y a | 1
| A accepté
Problem with Patch, trying to fill a surface based on points.
Not sure you can do that with the patch command "as it is". You have to create some sort of mesh. Something nicer is obtai...
environ 11 ans il y a | 0
Help with output values.
If I get it right your function MatOb just prints x_values in the standard output. I fail to see the need of introducing one fu...
environ 11 ans il y a | 0
| A accepté
error in embedded matlab function
Matlab is complaining because it cannot find fnct1. This is the typical answer you get when you use a function that does not ex...
environ 11 ans il y a | 0
logical indexing between two varaibles
I'm not sure I understand your problem. It looks like some sort of binning problem. You could try using "histc" on the column...
environ 11 ans il y a | 0
Make unequally spaced data, equally spaced
Perhaps this is obvious, but datenum(date,'yyyymmddhhMM'); where "date" is a char variable containing your timestamp, con...
environ 11 ans il y a | 0
Error message while using Fullfile to write .m file in a specific folder
I think it might have to do with this: in your code you define the name of the file in a char *variable* fileID=['tilt',num2...
environ 11 ans il y a | 0
How to have different styles of mesh for matlab surfaces?
uhm, mesh style should be easy, provided you do not use the same color for the faces and the mesh. I'm using black here. se...
environ 11 ans il y a | 0
I don't understand what this u(:,1) does to matrix or vector?
It gives you the first column of the array u. If u is a row vector, that is the 1st element. if u is a column vector, that...
environ 11 ans il y a | 0
| A accepté
how to find the same elements from 2 vectors
% this is going to find the common elements (1 and 5) I=intersect(vector_1,vector_2); % this is going to introduce the th...
environ 11 ans il y a | 2
| A accepté
