已回答
how to find a value of matrix in a specific position?
if(A(2,3) == 5) ...your code elseif(A(3,1) == 89) ...your code end

11 years 前 | 0

| 已接受

已回答
find similar element in a matrix
First question: create X = zeros(10,4); then plug in you vectors, e.g., X(1,1:numel(v1)) = v1; Second ...

11 years 前 | 0

| 已接受

已回答
Create new column for data after each iteration of a for loop
It seems that the vector t could be of different size at each iteration, depending on the if condition. If that's the case, cons...

11 years 前 | 1

已回答
3 lines and 3 different y axes on one plot?
First, you need to pass the parameter to the ode function. I cut and pasted them there but you can add them after l in the ode c...

11 years 前 | 0

已回答
area of intersection of two ellipses??
with polybool and polyarea

11 years 前 | 0

| 已接受

已回答
How can I print the output data in different way?
V_x1 = reshape(V_x1',1,[])

11 years 前 | 0

已回答
question regarding reading .dat file in matlab
If the file is like the one you have posted, you can use the load command

11 years 前 | 0

| 已接受

已回答
How can I check whether the strictly positive elements of each row of a matrix are equal?
B = zeros(size(A,1),1); for i = 1:size(A,1) temp = A(i,:); temp = temp(temp>0); temp = unique(temp); ...

11 years 前 | 0

已回答
Save the listing of files in a directory to a textfile
fid = fopen('myfile.txt','w'); for i = 1:length(fileList) fprintf(fid,'%s\n',fileList{i}); end fclose(fi...

11 years 前 | 2

| 已接受

已回答
Defining matrices to solve Ax=b using a(i,j)=-1+2max(i,j) and b(j)=sum(j to n) a(i,j)
Replace your code with: summ=0; for j=1:n summ=sum(A,2) end so there is no confusion between the variable s...

11 years 前 | 0

| 已接受

已回答
Please help, I wrote a matlab code for the Simple Subspace Iteration. But the iteration does not to stop
You have to calculate res in the while loop for it to end at some point.

11 years 前 | 0

| 已接受

已回答
how can we predict coordinates of point by intersection of two curves in matlab.
If you have the points composing the two curves, you can use intersections. http://www.mathworks.com/matlabcentral/fileexchan...

11 years 前 | 0

已回答
How to use a set of variables from an xlsx file
Look up xlsread

11 years 前 | 0

已回答
how to remove NaN from anon function?
If x is the array in which you want to remove the NaN: x(isnan(x)) = 0;

11 years 前 | 0

已回答
How can i reset a plotted line everytime I draw a new one?
Before plotting the new variable: delete(fig_handle) and replace the last line in your code with: fig_handle = line...

11 years 前 | 0

| 已接受

已回答
How can i pass an index to ode function?
You will need check the time into the fun and pass both A and t to it. You want something like: [t,f]=ode45(@(t,x)fun(t,x,t...

11 years 前 | 0

已回答
How to add text to a video in matlab?
Use text for the frame of interest

11 years 前 | 0

已回答
Solve system of ode
How to call the solver: [t,Y] = ode45(@(t,x)sisdif(t,x,Fcm,m,Cx,r,R,Iy),[t0 t1],initialConditions); where [t0 t1] is the...

11 years 前 | 0

已回答
How can i display guitar 6 string in gui
You can insert static text or an edit box in your gui and refresh its content every 0.5 s with the strings you've shown in the p...

11 years 前 | 0

已回答
How do I import this CSV file?
Save the file as xls or xlsx and then use xlsread to import the parts of the file that you need

11 years 前 | 0

| 已接受

已回答
Index exceeds matrix dimensions
The variable dis is 1 by 8 while you ask the code to access dis(k,l) with k from 1 to 50

11 years 前 | 0

已回答
How do you print data from a loop into a Matrix?
You always write in the same cell, that's the issue. Before the while loop, define a variable to count how many times you prin...

11 years 前 | 0

| 已接受

已回答
reading a csv file with a multiline header and alphanemeric dataset
[~,~,a] = xlsread('file.xlsx','M18:M53'); for i = 1:length(a) if(~isnumeric(a{i})) a{i}=0; elseif(isna...

11 years 前 | 0

已回答
check if a variable in a structure exist
Use: ispresent = isfield(handles,'Y2') See help isfield for more infos.

11 years 前 | 1

已回答
two data in one plot graph
figure plot(x,y1,x,y2) or plot(x,y1,'r',x,y2,'b') if you want to assign colors to the curves. If you want to ...

11 years 前 | 0

已回答
How can I read in the integer data from an alphanumeric formatted text file?
fid = fopen('myfile.txt','r'); n = 18; % characters that you want to eliminate 61583552011XXX262 nrow = 100; % numbe...

11 years 前 | 1

| 已接受

已回答
how to find a string within a filename?
Try looking up the strfind command.

11 years 前 | 0

已回答
Flow of control in GUIs
The callback functions are called when you interact with a component in the gui. So, for instance, when you click on the pushbut...

11 years 前 | 1

已回答
Writing a function for a Projectile?
You do not recalculate x in the loop. Is it possible that it should have been: x=(horizontal_position_change+x); in the...

11 years 前 | 0

已回答
Plot continuous on time
use hold on command

11 years 前 | 0

| 已接受