MATLAB
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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 ...
8 Monate vor | 0 Antworten | 0
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AntwortenFrage
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...
mehr als ein Jahr vor | 0 Antworten | 0
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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...
etwa 2 Jahre vor | 1 Antwort | 0
1
Antwortfmincon/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...
mehr als 2 Jahre vor | 0
| akzeptiert
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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...
mehr als 2 Jahre vor | 1 Antwort | 0
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AntwortFrage
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...
fast 3 Jahre vor | 1 Antwort | 1
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AntwortFrage
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...
etwa 3 Jahre vor | 1 Antwort | 0
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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...
mehr als 3 Jahre vor | 1 Antwort | 1
1
AntwortBox 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...
mehr als 3 Jahre vor | 0
| akzeptiert
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...
mehr als 3 Jahre vor | 0
| akzeptiert
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...
mehr als 3 Jahre vor | 0
| akzeptiert
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 ...
mehr als 3 Jahre vor | 0
| akzeptiert
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...
mehr als 3 Jahre vor | 1
| akzeptiert
Gesendet
ternary_plots
MATLAB package for creating ternary plots. Based loosely on 7210-ternary-plots by Ulrich Theune.
mehr als 3 Jahre vor | 26 Downloads |
set xticks by calculation but also force 0 to be displayed
set(gca,’XTick’,array_of_values)
mehr als 3 Jahre vor | 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...
mehr als 3 Jahre vor | 0
| akzeptiert
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...
mehr als 3 Jahre vor | 1
| akzeptiert
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...
mehr als 3 Jahre vor | 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 ...
mehr als 3 Jahre vor | 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...
mehr als 3 Jahre vor | 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...
mehr als 3 Jahre vor | 0
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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...
mehr als 3 Jahre vor | 0
| akzeptiert
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 = ...
mehr als 3 Jahre vor | 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...
mehr als 3 Jahre vor | 0
| akzeptiert
stacked plot x axis change in 2015 matlab version
bar(Y(:,1),Y(:,2:end))
mehr als 3 Jahre vor | 0
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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...
mehr als 3 Jahre vor | 1
| akzeptiert
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....
mehr als 3 Jahre vor | 0
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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; ...
mehr als 3 Jahre vor | 0
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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...
mehr als 3 Jahre vor | 1
| akzeptiert