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Yoav Livneh


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Actif depuis 2011

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how to make a function that calculate consective difference of elements of a vector
If you insisnt on using for loops you just need to change the limit of the for loop to length(v)-1 and of course add ...

plus de 9 ans il y a | 0

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How can I get the value of toggle button (uicontrol)
You need to set a callback function for the button if you want something to happen when it is pressed. For example: % set c...

plus de 9 ans il y a | 1

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What does Subscripted assignment dimension mismatch mean? I keep getting the same error?
The error means that the destination is not the same dimension as the source. In this case, you are trying to write an 8x8 matri...

presque 10 ans il y a | 0

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How to save data of UITABLE in Workspace
I think you are using uitable wrong. Look at the documentation for this function but I believe it should be something like this:...

presque 10 ans il y a | 0

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Writing data in file and naming file with a string value
Change your fopen line to: fileID = fopen(['error_', num2str(n), '.txt'],'a');

presque 10 ans il y a | 0

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How do i create a loop that accesses more than one matrix?
Maybe try something like this for jj = 1:size(X,1) % match 1st column of X to 1st column in Y idx = find(X(jj,1) ...

presque 10 ans il y a | 0

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Get string value from GUI listbox
Change the condition on your if to if strcmp(ListBoxCheck, 'Afghanistan') Hopefully this should now work.

presque 10 ans il y a | 0

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Loading in to the POPUP menu of GUI
You need to save and load the "Value" property of the popup menu. For example, taking Geoff Hayes's case: % get the value f...

presque 10 ans il y a | 0

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adjusting label and title thickness of the plot function
Just use the 'fontsize' attribute of the axes: set(gca,'fontsize',fontsize); % default fontsize is 10

plus de 10 ans il y a | 0

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How to sum the fuel consumed at idle (vehicle speed=0)?
In order to get all indeces of speed=0 you need to do: IdleFuelIndex = find(VSPD == 0); Then you can add them all up: ...

plus de 10 ans il y a | 0

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Advanced Plotting of graphs
You can use the plotyy command to plot two y axes with the same x axis. For example: [AX, H1, H2] = plotyy(s,v,s,t); Thi...

plus de 10 ans il y a | 0

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drawing specific histogram for errors.
You can use the hist command. For example for the parameter DS: [n xout] = hist(DS,100); 100 is an arbitrary number of bins ...

plus de 10 ans il y a | 0

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how can i insert markers and merge four graphs in one?
In order to change the markers you can change the 'marker' attribute on the line series. For example: [AX, H1, H2] = plotyy(...

plus de 10 ans il y a | 0

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How to create a column vector where each element will be compounded amount by percentage of another vactor?
You need to use the function cumprod. In your example: x = [.2 .3 .4]'; z = 1000*[1; cumprod(1+x)]; This will give you ...

plus de 10 ans il y a | 0

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How to create a matrix for plotting from a roots matrix in a loop?
You can store the data into a vector: results = []; while (condition) code; r = roots(x); results(en...

plus de 10 ans il y a | 0

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Question


Parameters imported using assignin not visible to parfor
I am runnig a function that uses a structure with many fields as an input. I use assignin to import all the fields as variables ...

plus de 10 ans il y a | 1 réponse | 0

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Question


How to password protect mat files
Hi all. I am looking for a way to password protect a .mat file. My requirements are that it cannot be changed or deleted with...

plus de 11 ans il y a | 2 réponses | 0

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Question


Idle labs on Parallel Computing Toolbox
I use a network server that is shared with other users in the company to perform heavy calculations with Matlab. My question ...

plus de 12 ans il y a | 1 réponse | 0

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Tutorial on how to make a colourful GUI in matlab ?
doc guide

environ 13 ans il y a | 0

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Out of memory in parfor loop
You are running out of memory because parfor uses a lot more memory. Let's say for example, that each iteration of the regula...

environ 13 ans il y a | 0

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adding values in array
If idx1 and idx2 are row vectors you can do idx3 = [idx1 idx2]; If they are column vectors do idx3 = [idx1; idx2];

environ 13 ans il y a | 0

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list all subfolder names
Each time you save the parameter in a new .mat file, save that parameter to a new cell in a cell array. Then you can use a uitab...

environ 13 ans il y a | 0

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how to correctly skip elements of a vector field table with 4 columns
Use this: ix=mod(V(:,1),2)==0 & mod(V(:,2),2)==0; V_SKIP = V(ix,:);

environ 13 ans il y a | 1

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Plotting a cell array with double values
Use testArray = [testArray{:}]; This will transform testArray into a regular array which you can plot using plot(te...

environ 13 ans il y a | 2

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how do you use sin in matlab?
Use sin(30).

plus de 13 ans il y a | 0

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matrix indexing and manipulation
You can use ind2sub. [rowIndex, colIndex] = ind2sub(size(Z),Index); I think this should work.

plus de 13 ans il y a | 0

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how to get a 3D stem plot?
Try <http://www.mathworks.com/help/techdoc/ref/stem3.html |stem3|>.

plus de 13 ans il y a | 4

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How to access GUI workspace?
CLEAR only clears the current workspace, which is usually 'base'. Your GUI is run from a separate function which has its own wor...

plus de 13 ans il y a | 0

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define function which uses handles.variables
It is better to send all your 23 variables as one struct, both in terms of neater code and the time and memory it takes to alloc...

plus de 13 ans il y a | 1

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Plotting a graph to show correlation of voltage over current
R=10; V = 0:2.5:Vmax; I = V/R; figure; plot(I,V) Type doc plot for more information.

plus de 13 ans il y a | 0

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