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Domanda
Inconsistent results for symbolic integration of >2 cosine factors
When I integrate the product of two cosine functions with integer arguments, I get an answer that appears correct. When I add a ...
oltre un anno fa | 0 risposte | 0
0
risposteDomanda
Can the default behavior of selected annotations be changed to avoid unwanted movement?
A common occurence in Figure manipulation is selecting an object (e.g. arrow, textbox, etc) for editting in the property inspect...
circa 2 anni fa | 0 risposte | 0
0
risposteDomanda
Without resorting to FEX/MEX, can the overhead of repeated calls to sparse() be avoided with operations on I, J, V directly?
I have a time-marching problem bottlenecked by matrix multiplication , where the sparse matrix is the sum of many time-independ...
quasi 3 anni fa | 1 risposta | 0
1
rispostafmincon/multistart won't debug/display errors in OutputFcn
I figured out the issue, 'OutputFcn' must be added in Multistart, not fmincon. This also means using different syntax for the ca...
circa 3 anni fa | 0
| accettato
Domanda
fmincon/multistart won't debug/display errors in OutputFcn
If "x=b" is uncommented, the code still runs and does not break on error or display the line number. This means debugging a mor...
circa 3 anni fa | 1 risposta | 0
1
rispostaDomanda
Is there a better way to initialize the DataTipTemplate field in primitive objects?
Problem: Creating a Chart Object as in Plot() initializes a DataTipTemplate field in the resulting handle. p = plot(0,0); p...
oltre 3 anni fa | 1 risposta | 1
1
rispostaDomanda
Why do logical indices implicitly reshape? Is there a workaround?
I've encountered this several times, and it always bothers me. Say for example I want to sum each row of matrix A, for values le...
quasi 4 anni fa | 1 risposta | 0
1
rispostaDomanda
When using "Pause on Warning/Error," is there a way to avoid breaking into built-in functions?
For example, a bad set of data when calling "fit" breaks into a function called "curvefit.attention/Warning/throw": Warning: Eq...
quasi 4 anni fa | 1 risposta | 1
1
rispostaBox Plots for Vectors of Varying Length
The proximate error is that the symbols around the year-range string ‘1931-1960’ are not apostrophes, so MATLAB doesn't know w...
quasi 4 anni fa | 0
| accettato
Mesh Grid of a 3d array
So this may be due to confusion about how mesh() works. Mesh produces a 2D surface in a 3D volume, with the Z-axis being the val...
quasi 4 anni fa | 0
| accettato
Run "if" logic on a row
The trick is to recognize that you can use & / | (and/or) to chain multiple logical operations together. In this case, you can g...
quasi 4 anni fa | 0
| accettato
Solve the generalized form of the Poisson equation
I don't get an error when running your code with MATLAB version 2019b, but the bigger problem you have is that your method will ...
quasi 4 anni fa | 0
| accettato
How to plot a matrix within a matrix?
In terms of organizing the data, the simplest approach is to create two matricies for stiffness and deflection that have two dim...
quasi 4 anni fa | 1
| accettato
Inviato
ternary_plots
MATLAB package for creating ternary plots. Based loosely on 7210-ternary-plots by Ulrich Theune.
circa 4 anni fa | 17 download |
set xticks by calculation but also force 0 to be displayed
set(gca,’XTick’,array_of_values)
circa 4 anni fa | 0
Function for telling if a function is unique and how many solutions it has.
".p" files are purposefully obfuscated, so you cannot copy the code, suggesting your instructor does not want you to use someone...
circa 4 anni fa | 0
| accettato
Why do I get 'Out of Memory' error?
Out of memory is exactly what it sounds like: your program is trying to hold more data on system memory than is available. The c...
circa 4 anni fa | 1
| accettato
I need help with creating bounded logarithmic plot
Assuming you meant to have , then t = linspace(0,2*pi); x = exp(-t); % if constant, then x(1:numel(t))=exp(-1); y = t; plo...
circa 4 anni fa | 0
How to find the zero crossing in x and time data sets?
idx = find( f(2:end).*f(1:end-1)<0 ) Will return the left-hand indicies of cross-over points. To get the exact X-values where ...
circa 4 anni fa | 0
how to form a two-column array for a given but dimmension-unknown array?
You can make a row vector of any N dimensional matrix by linearizing, for example A( 1:numel(A), 1 ) = A(:); .Thus, you can a...
circa 4 anni fa | 0
Conditional Scatter plotting based on third data set
Assuming columns with 1's will only have 1's, and columns with 2's and 3's will never have 1's, then it is as simple as taking t...
circa 4 anni fa | 0
| accettato
How to take 1 row on table 1 and compute it against every row of table 2 and do this for each row in table 1
Assuming the data is read into two variables, d1(1:N1,1:3) and d2(1:N2,1:3) by d1 = xlsread('Matlab Help.xlsx','Random','B2:D31...
circa 4 anni fa | 0
| accettato
Using trapz just for positive areas
You need to use more fine-grid X data in polyval to get test points at y=0. xA_fine = linspace(xA(1),xA(end),100); fA_fine = ...
circa 4 anni fa | 1
Continue after .exe finishes
You can use system() function to pass the command (as a string) without the "!" symbol. If using unix OS, you can pipe (with the...
circa 4 anni fa | 0
| accettato
stacked plot x axis change in 2015 matlab version
bar(Y(:,1),Y(:,2:end))
circa 4 anni fa | 0
| accettato
Find the input values of a function within an output range.
If you cannot solve algebraically (no closed form solution), then fzero is the best bet. Something like this: % example y range...
circa 4 anni fa | 1
| accettato
how to fix this error 'Index in position 2 exceeds array bounds.'?
The proximate reason for the error is that "Popbest" is empty, and so acessing the first column by Popbest(:,1) throws an error....
circa 4 anni fa | 0
| accettato
How to show two axis on a plot only where i want them
You can get the handles for the left and right axes with yyaxis. yyaxis left; % Sets the current y-axis left left_ax = gca; ...
circa 4 anni fa | 0
| accettato
How can I plot the maximum values of the double matrix ?
Max() has an optional third argument that determines the index along which to take the maximum. So for a 10x20 matrix A, A_max...
circa 4 anni fa | 1
| accettato
