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Feeds
Error changing data in table from char to double
This is to explain what is happening when using the function detectImportOptions: It seems the csv file format is inconsistent....
mer än 5 år ago | 0
Specifying axis title for a specific tick mark range
From the figure window, click menu Insert --> TextBox
mer än 5 år ago | 0
Calculation with strcmp with variable values
[C,idx1,idx2] = innerjoin(Tab1,Tab2, "LeftKeys",{'Description','Year'},"RightKeys",{'Description','Year'}); [~,idx3] = join(C, ...
mer än 5 år ago | 0
| accepted
values of equation in last iteration in fmincon
After the fmincon is run and you got the solution vector, make a call to the objective function using the solution vector but in...
mer än 5 år ago | 0
| accepted
Multiple boxplots on one figure
boxplot([W1;W2]','notch','on','Labels',{'recent windspeeds','last years windspeeds'})
mer än 5 år ago | 1
First input argument must be a function handle.
You cannot use nonscalar arrays of function handles .. use cell arrays instead: % your code dE{i} = @(t) 0.5*(-((X0(i)-Ts)./Ts...
mer än 5 år ago | 0
| accepted
How i plot vector in workspace but i have only name the vector i want plot
plot(eval(vars{1})); % 'BB1UN' plot(eval(vars{2})); % 'BB1UR'
mer än 5 år ago | 1
Plot tabel in a loop
It seems that the first column of dat is a text label then you can define a cell array of the possible lables and create a doubl...
mer än 5 år ago | 0
Populate a table (or concatenate a cell array) with various data types
Try this function which will prety much do the job for you. You may optimize it to preallocate A as well. function A = cell_for...
mer än 5 år ago | 0
| accepted
Create unique matrices from existing matrix using datenum
I am not sure what you are planning to do eventually. However, the following code does what you have explained. % smallest time...
mer än 5 år ago | 1
| accepted
How can I change the way Matlab fills in my matrix?
B(:,:,i) = reshape(A(i,:),37,31)';
mer än 5 år ago | 0
| accepted
How to save in n different variables string data separated by comma
% RX='0.036,0.029' v = sscanf(RX, '%g,%g'); A = v(1); B = v(2);
mer än 5 år ago | 0
| accepted
How to draw line and hold it?
Add this code after the line N=size(M); (you don't need N in this code anymore) % round to the nearest integer S1_x=round(S(1,...
mer än 5 år ago | 0
| accepted
I have 28*6 cell as seen in the picture. Except for the first column, I need all the other columns to have equal lengths by filling them up with zeros in the end. Thanks in advance.
% ca is your cellarray ii = cellfun(@isnumeric, ca); m = max(cellfun(@numel, ca(ii))); ca(ii) = cellfun(@(x)[x;zeros(m-numel(...
mer än 5 år ago | 0
| accepted
Cannot set quiver head size bigger than 1/3 of the length of the arrow.
There is a cutoff on how big the head size is compared to the norm of the arrow. If you can allow the norm to get longer you wil...
mer än 5 år ago | 0
How to measure angle of intersection ?
Assuming that the two lines are defined by four points P1, P2, P3, and P4 as such, the first line is L1(P1,P2) and the second li...
mer än 5 år ago | 0
| accepted
How to train a data for binary classification using svm classifier
See the following page which explains SVMs and provides many examples on classification problems. https://www.mathworks.com/hel...
mer än 5 år ago | 0
| accepted
if else nested loops
The problem is not with the if-else statments (although they are not correctly used). You need to assign the new values to x and...
mer än 5 år ago | 0
Why I am getting error message when I try to define line specs of a plot?
This will solve the problem. p = plot(fit1,'k-'); p.LineWidth = 2;
mer än 5 år ago | 0
Creating a matrix of ones and zeros with location of ones based on array value
The best solution I can think of is to use a for loop but will be faster than the one you showed because it will do one scalar a...
mer än 5 år ago | 1
Please help extract variables from mat files and plot
load('site1.1.mat'); site1 = site; load('site1.2.mat'); site2 = site; figure; plot(site1.freq, site1.zxy, 'DisplayName', ...
mer än 5 år ago | 0
| accepted
How to measure angle between two lines?
P1 = [1,1]; P2 = [5,5]; P3 = [5,2]; P4 = [1,3]; xL1 = P1(1)-P2(1); xL2 = P3(1)-P4(1); yL1 = P1(2)-P2(2); yL2 = P3(2)-P4(2...
mer än 5 år ago | 1
Plot with Multiple x-Axes and y-Axes using the fill function
It seems Matlab is resetting ax2 settings to default after the fill command. add this line after the fill command to set them a...
mer än 5 år ago | 0
| accepted
extract all the data from a nested cell array with different size
cell2mat([yourcellarr{:}])
mer än 5 år ago | 0
| accepted
Add s.f. to variable
I guess you mean by s.f. the format string in the sprintf function which is '%.2f' in your example. There is a way to specify v...
mer än 5 år ago | 0
Legend issue: not all the entrties are shown.
You can only add one legend to the axis. So to solve your problem put all the names in one legend call. You may modify your code...
mer än 5 år ago | 0
| accepted
"Error using save Must be a string scalar or character vector." - but it is a string!
You need to enclose the variable names with qoutations like this: save(['data/test',num2str(n),'.mat'],'U','U_old','dt');
mer än 5 år ago | 12
| accepted
Divide your plot to four quarters and plot each of the four curves in a separate quarter of the plot.
The only way to create multiple plots in a figure is to use subplots as mentioned by per isakson You need to decide how to div...
mer än 5 år ago | 1
| accepted
How to plot all the points between two lines?
It seems that you have an area inside a parallelogram defined by four points. Then you can use the inpolygon method as follows: ...
mer än 5 år ago | 1
| accepted
Saving mutiple files as structs
Asuming you get the files in cell array called "files", you can run the following loop to build the struct array "s_files" you w...
mer än 5 år ago | 0
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