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Jonas Freiheit


Last seen: meer dan 2 jaar ago |  Active since 2020

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Question


Trajectorys of 4 objects on 3D plane not symmetrical
Hi all, Sorry i'm a beginner at Matlab and am having issues with getting 4 spots on a 3D plane with the intitial conditions (0,...

meer dan 2 jaar ago | 1 answer | 0

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answer

Question


Matlab plot3 not giving a 3D plot
Hi all, Sorry I'm a beginner with Matlab and don't understand why my plot3 with 3 inputs is not giving me a 3D representation of...

meer dan 2 jaar ago | 1 answer | 0

1

answer

Question


Error using plot3 not enough input arguments
Hi all, When I am trying to plot my dots on a 3D plane I get an error with plot3 telling me there are not enough input argument...

meer dan 2 jaar ago | 1 answer | 0

1

answer

Question


Out of memory error message when attempting to plot in 3D
Hi all, From my following code as I'm trying to plot the trajectory of 3 bugs in three dimensions I am presented with the folll...

meer dan 2 jaar ago | 1 answer | 0

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Question


Translating matlab to python
Hi All, I would like to translate the following program which combines the second row all column data from excel files in a fol...

bijna 3 jaar ago | 0 answers | 0

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answers

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Invalid data type. First argument must be numeric or logical error when using simplisma
Hi all, I am getting an error when using the function simplisma(datar,varlisst,1,2). Where datar is a 2x261 table when an FTIR ...

bijna 3 jaar ago | 1 answer | 0

1

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Question


Empty figure when trying to plot in a for loop
Hi all, I was wondering why I am presented with an empty figure when trying to plot in a for loop. My x and y variables seem to...

ongeveer 3 jaar ago | 1 answer | 0

1

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Question


Unable to solve for a variable
Hi all, I am trying to solve for a variable 'a' and saving it into an array, However, I am left with an inifinitely long runnin...

ongeveer 3 jaar ago | 2 answers | 0

2

answers

Question


Error solving for a particular variable from two equations
Hi all, I am having trouble with solving for a particular variable 'a' from two equations, I end up with an error saying : Arr...

ongeveer 3 jaar ago | 1 answer | 0

1

answer

Question


principal component analysis loading plots *Advanced*
Hi all, I am wondering if there is anyone here that is really good with PCA on Matlab and coding. having an issue with my curre...

ongeveer 3 jaar ago | 0 answers | 0

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answers

Question


Generating a categorical array with group names
Hi, I was wondering how I can generate a 4751x1 cell { } which contains inside three different group names. So 1055 entries o...

ongeveer 3 jaar ago | 1 answer | 0

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Question


creating a 5046x1 { } cell with specific category names
Hi, I was wondering how I can generate a 5046x1 cell { } which contains inside three different group names. So 1682 entries of...

ongeveer 3 jaar ago | 1 answer | 0

1

answer

Question


Extracting specific data from multiple excel files and create a single matrix from those
Hi, I have a file on my computer with close to 1000 excel files and I don't want to manually extract the second row from every e...

ongeveer 3 jaar ago | 2 answers | 0

2

answers

Question


Blank screen when plotting a graph and how to partial differentiate?
p_RK = @(v,T) (R*T*(1/(v-b) - a/(R*T^1.5*v*(v+b)))) % The redlich kwong equation How can I partiall differentiate this function...

meer dan 3 jaar ago | 1 answer | 0

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answer

Question


How can I make a system identify if a solution has no solutions?
Hello, I was wondering how I can make this backsubstitution program identify whether a solution is infinite or has no solutions...

ongeveer 4 jaar ago | 1 answer | 0

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Question


Variable x must be of data type double. It is currently of type sym. Check where the variable is assigned a value.
Hello, I was wondering how I could change my variable 'x' to type double from syms. I've tried converting it to type double wit...

ongeveer 4 jaar ago | 1 answer | 0

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answer

Question


Index exceeds the number of array elements (1)
%When I try to perform a row interchange for 'b' vector It tells me it exceeds the no of array elements. This is an attempt to p...

ongeveer 4 jaar ago | 1 answer | 0

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