plot graphic with different color
If you're using the plot command, it is relatively easy to define a different color for a plot. Setting the condition where this...

bijna 3 jaar ago | 0

How to map and plot each y coordinate in a y coordinate array with each coordinate in a x coordinate array??
plot(X,Y) Was there something more to your question that I didn't understand?

bijna 3 jaar ago | 0

Adding to a vector after each step of a for loop.
You need to specify the index of the element you want to replace. for i = 1:1000; steps(i) = i; end Realistically though...

bijna 3 jaar ago | 0

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Hello! Can you help me with this?
It seems to me like you're totally overcomplicating this. Let me know if I'm interpretting the steps of your code correctly. Th...

ongeveer 3 jaar ago | 0

Access previous iteration in while loop to derive stopping criterion for differential equation correction-prediction method
In MATLAB, you cannot access the previous iteration of a loop directly. If you want to utilize that information you need to eith...

ongeveer 3 jaar ago | 0

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How can remove Excel column by MATLAB
The simplest way is to load the excel file with xlsread, then write the data back with only the desired columns using xlswrite. ...

ongeveer 3 jaar ago | 0

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Plotting a matrix in a for loop.
With MATLAB you don't really want to perform the plot inside the loop in this case. Just save your results in a matrix and plot ...

ongeveer 3 jaar ago | 1

How to save more than the last matrix in a for cycle
You need to index Sigma_elem. Sigma_elem(:,:,i,N)=EPSM(N,1:6).*e_mat/0.6; % Or something similar

ongeveer 3 jaar ago | 0

Plotting a 3-D Matrix, but only for some points
I would suggest using scatter3 to make the actual plot. I would suggest using something like find to identify the locations of t...

ongeveer 3 jaar ago | 0

how to calculate how many rows are having numeric values in a particular cell of an excel sheet data.
Read the file with xlsread, filter the NaN values, then determine the number of the remaining values. numnumerics = sum(~isnan(...

ongeveer 3 jaar ago | 0

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Extract and code gender string as number using if loop
Just to clarify, you have 'gender' as two separate variables, once as a variable called 'gender' which will have a numeric assig...

ongeveer 3 jaar ago | 0

overly convoluted elseif condition
You can replace all of them with a single statement and indexing. if x>=1 & x<=4 y = p(x); else y = 1; end

ongeveer 3 jaar ago | 0

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How to increment matrix row only inside a nested for loop?
The solution is indexing. You can do math in your index if you need to. x((i-1)*5+j) = i*j;

ongeveer 3 jaar ago | 0

filtering data with a for loop and plot only filtered data
This can be done much more simply with logic indexing. quer = meas.ay.data; quer = quer(quer > 1.5 | quer < -1.5); plot(quer)...

meer dan 3 jaar ago | 1

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Replace values in collumns
You can just index your matrix to reorder it, assuming all of the columns are the same type of data (i.e. all of column 6 is z2,...

meer dan 3 jaar ago | 0

2 variable for-loop
The issue is with your definition of test. Nested for loops are totally fine. test(:,ss)=TKE_dave(:,ss); On your last loop te...

meer dan 3 jaar ago | 1

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Error Unable to perform assignment because dot indexing is not supported for variables of this type.
You are receiving the error because you have already defined the class of the first level as a character. In order to add a seco...

meer dan 3 jaar ago | 0

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Changing Variable in matrix
Why are you originally defining A as A = [a b c]? This isn't very common or efficient matlab usage. I would suggest starting wit...

meer dan 3 jaar ago | 0

Could someone please optimize this code?
I don't know about 'optimized,' but I'm pretty sure you can remove the entire for loop by vectorizing. Also, suppressing your va...

meer dan 3 jaar ago | 0

How can I assign a variable to all the columns and all the rows of a matrix?
You don't need to actually create a new variable for this, you can just use the results from size. A = randi(100,20,10); [r,c]...

meer dan 3 jaar ago | 0

A for loop with matrix as step
I'm confused what you're trying to do. From the psuedo code you wrote it looks like you're trying to loop through each of the a...

meer dan 3 jaar ago | 0

Choose a cell array that satisfy better some criteria
Ok, here is what I have come up with. It will probably still need some tweaking, but you should be most interested in the calcul...

meer dan 3 jaar ago | 0

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Is the find function a robust method to determine the number of specific values in a Matrix?
That method will certainly work, and I would generally use the same concept. I would just use the sum command though to avoid th...

meer dan 3 jaar ago | 1

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can any one explain this line of the code.
Per matrix math rules, when you add a single value to a matrix, that operation is applied to all values of the matrix individual...

meer dan 3 jaar ago | 0

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Find all the words contained in a file and make an index
You are on the right track, but you aren't calling the word index correctly. Also, I would suggest using strfind instead of the ...

meer dan 3 jaar ago | 0

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Describing a sum with a while loop
I'm pretty sure that adding a big number to 0 will bump you over pi on the first iteration, but maybe that's just me. I would do...

meer dan 3 jaar ago | 0

Select value from the list by defining criteria
I would use readtable to import the data, the logic indexing to narrow down the results. data = readtable('mydata.xlsx'); redu...

meer dan 3 jaar ago | 0

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How to make matlab variables named as excel header
It sounds like readtable might be what you're looking for. I don't think it's exactly what you're asking, but it should recogniz...

meer dan 3 jaar ago | 0