Community Profile

A. Sawas

59 total contributions since 2017

View details...

Contributions in
View by

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....

meer dan een jaar ago | 0

Specifying axis title for a specific tick mark range
From the figure window, click menu Insert --> TextBox

meer dan een jaar ago | 0

Calculation with strcmp with variable values
[C,idx1,idx2] = innerjoin(Tab1,Tab2, "LeftKeys",{'Description','Year'},"RightKeys",{'Description','Year'}); [~,idx3] = join(C, ...

meer dan een jaar 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...

meer dan een jaar ago | 0

| accepted

Multiple boxplots on one figure
boxplot([W1;W2]','notch','on','Labels',{'recent windspeeds','last years windspeeds'})

meer dan een jaar 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...

meer dan een jaar 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'

meer dan een jaar 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...

meer dan een jaar 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...

meer dan een jaar 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...

meer dan een jaar ago | 1

| accepted

How can I change the way Matlab fills in my matrix?
B(:,:,i) = reshape(A(i,:),37,31)';

meer dan een jaar 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);

meer dan een jaar 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,...

meer dan een jaar 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(...

meer dan een jaar 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...

meer dan een jaar 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...

meer dan een jaar 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...

meer dan een jaar 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...

meer dan een jaar 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;

meer dan een jaar 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...

meer dan een jaar ago | 1

load('site1.1.mat'); site1 = site; load('site1.2.mat'); site2 = site; figure; plot(site1.freq, site1.zxy, 'DisplayName', ...

meer dan een jaar 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...

meer dan een jaar 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...

meer dan een jaar ago | 0

| accepted

extract all the data from a nested cell array with different size
cell2mat([yourcellarr{:}])

meer dan een jaar ago | 0

| accepted

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...

meer dan een jaar 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...

meer dan een jaar 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');

meer dan een jaar ago | 4

| 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...

meer dan een jaar 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: ...

meer dan een jaar ago | 1

| accepted