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# Morten Nissov

Last seen: 4 meses ago Active since 2019

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Getting plotted x and y points from probplot
I am making a probplot of some data and would like to find the x-value corresponding to a given probability, e.g. prob>0.99 what...

11 meses ago | 1 answer | 0

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probplot for Chi2 and noncentral chi2 distribution
I am looking at GLR tests and I need to verify that my test statistic is chi2/noncentrally chi2 distributed. As far as I can see...

11 meses ago | 0 answers | 0

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Confidence intervals in QQplot
I am using qqplot to demonstrate distribution fits, I think it would be beneficial to incude confidence intervals although I am ...

11 meses ago | 0 answers | 0

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qqplot of chi2 distribution
I am attempting to check if some data fits to a chi2 distribution with 1 DOF, since it isn't possible to makedist a chi2 distrib...

11 meses ago | 0 answers | 0

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Problems using `fitdist` to Rician distribution
I am having some problems fitting a rician distribution to a set of positive values. Attempting to make the fit returns >> p_ha...

12 meses ago | 1 answer | 0

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Confusino regarding statistical tests for given distribution
I am attempting to describe some data I have with a distribution but am experiencing some strange behavior. I have a dataset ...

12 meses ago | 2 answers | 0

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Pagemtimes accuracy versus for loop
I was using pagemtimes for some calculations an I get results which are not quite what I expect, for example N = 1e3; a = ran...

alrededor de 1 año ago | 1 answer | 0

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Using pagemtimes multiplying from left and right side
I have a 3D array I need to multiply on left and right sides by a constant 3x3 matrix, take a cholesky decomposition and multipl...

alrededor de 1 año ago | 0 answers | 0

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Question regarding quaternion conventions; particularly with respect to point vs frame rotations
I've been using the quaternion class from the sensor fusion toolbox and I just want to be sure that I haven't made a misundersta...

alrededor de 1 año ago | 3 answers | 0

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Question

3D array of rotation matrices multiplied on 2D array of vectors
As the title says I have two matrices, rotmats and acc. For this example suppose that acc is a vector of {n} frame accelerations...

alrededor de 1 año ago | 2 answers | 0

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Mesh grid from 3-column table
I have a table with values extracted from a csv I want to transform into a grid. Let's use this table as an example tdata.x = ...

alrededor de 1 año ago | 1 answer | 0

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Question regarding `rf.LinAccelSign`
I am looking into the available error state filters for aided inertial navigation, particularly insfilterErrorState. There is...

alrededor de 1 año ago | 1 answer | 0

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Controu plot from matlab table
I have a table with values extracted from a csv I want to make a contour plot from. Let's use this table as an example tdata...

alrededor de 1 año ago | 1 answer | 0

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Simplifying with respect to trig identities to avoid dividing by zero
I need to calculate the jacobian for a set of differential equations and the calculation with respect to one variable is particu...

alrededor de 1 año ago | 1 answer | 0

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Reading vector elements into a string
I have a vector of numbers that I would like to use to create a filename. For example with a vector [1] I would like the filenam...

casi 2 años ago | 2 answers | 0

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Supressing output when calling pdflatex using `system()`
For this application it is convenient for me to build a latex file in matlab and compile it by system(['pdflatex ', latexFile])...

casi 2 años ago | 1 answer | 0

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Indexing array of symbolic variables dependent on time
I need to create variable number of symbolic variables and access each of them individually. It is necessary that they are time ...

casi 2 años ago | 1 answer | 0

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Question

Evaluating svd() on slice of matrix array.
I have an array of matrices such that size(A) == [3, 3, 1e3] for example. These 1000 [3x3] matrices must be orthonormal so I a...

más de 2 años ago | 1 answer | 1

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Matrix multiplication between 2d matrix and slice of 3d array
I have two matrices A (3,3,x) and B (3,3) where x is a variable, known value and typically on the order of thousands. I need to ...

más de 2 años ago | 1 answer | 0

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Question

Multiple outputs from anonymous function
I have a function of the following form function [out1, out2] = demo_fcn( in ) out1 = in(1); out2 = in(2); end whic...

más de 2 años ago | 3 answers | 0

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Changing font size of all axes labels
I often need to make pretty cumbersome plotting definitions in MATLAB, an example of which can be seen below figure(1) clf su...

más de 2 años ago | 1 answer | 1

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Question

chol() say matrix is not positive defnite even though all eigenvalues are positive
Title exaplins it more or less. I need to make the cholesky decomposition of a matrix and the function, chol(), returns an error...

más de 2 años ago | 1 answer | 0