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# Sky Sartorius

Last seen: 3 Monate ago Active since 2010

Aerospace engineer
Professional Interests: aircraft design, UAVs, optimization, rotorcraft, education

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Piecewise and blended functions
Create piecewise functions or smoothly blend functions.

Randomly select a number from a column of a stored matrix, stores the respective row
You can use randi to randomly generate the index you need, rowInd = randi(256,1); then use that index to pull out the row from...

7 Monate ago | 1

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Physical Units Toolbox
Enables operations using hundreds of supported physical units of measurement and physical constants.

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Check Matlab code that is supposed to throw errors or warnings.

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Standard Atmosphere Functions
Standard atmosphere gas properties. Support for n-dim inputs, non-standard atmospheres, units, etc.

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Similar to a character string, but displays itself in the command window as a clickable link.

Plot x^2+y^2=4
There are a few ways to go about this. One that is somewhat agnostic to what the equation is trying to represent (in this case, ...

fast 2 Jahre ago | 1

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select random number from an array with probabilities
You can query the cumulative probabilities: S = [4, 3.9, 3.8]; w = [0.5, 0.4, 0.1]; w = w/sum(w); % Make sure probabilites ad...

fast 2 Jahre ago | 0

get the x-value of a point on curve
This is a table lookup / interpolation problem. For your data, you'll first have to make sure there aren't any repeated y values...

fast 2 Jahre ago | 5

how do i open a browser in matlab ?
Use uigetfile: https://www.mathworks.com/help/matlab/ref/uigetfile.html Or if you have the toolbox, help uigetimagefile

fast 2 Jahre ago | 0

Size of a figure that I copy from Matlab to Powerpoint
I find that MS products sometimes have behavior as though they're taking a guess at what the pasted figure size should be. I fin...

fast 2 Jahre ago | 0

How can I create a 3D plot of data with dots of different color?
Use a scatter plot and CData: n = 100; xData = 1:n; % Placeholder - I assume you have additional information about the data to...

fast 2 Jahre ago | 0

How to create an object using class name
A quick and dirty approach that will work in many cases is to use eval: function new = createNewObjectOfThisClass(original) ne...

fast 2 Jahre ago | 0

Converting a row to diagonal matrix
Another guess at the intended meaning of the question could be that the values should be filled along the diagonals (instead of ...

fast 2 Jahre ago | 0

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MATLAB Style Guide Wiki access and search function
Tips for writing clear code. Search the MATLAB Programming Style Guide Wiki from the command line.

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fig - faster, more intuitive alternative to figure function
Manage figure windows by name and prevent figure window clutter.

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Bisection Method Root Finding
Very simple to use and robust method that takes array inputs, so it even has advantages over fzero.

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File Exchange Library Builder

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Pseudorandom number generation for engineering estimates
Tools for generating pseudorandom numbers, primarily geared toward making engineering estimates.

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Matrix plotting
Plot using single 2 x n (or 3 x n) matrices as inputs instead of x, y, (and z) vectors.

Question

What method do I overload to control display behavior in the workspace window?
When using a subclass of double (for example the ExtendDouble class from the <https://www.mathworks.com/help/matlab/matlab_oop/b...

etwa 4 Jahre ago | 0 answers | 0

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X Y Z coordinates matrix
You can use the |cat| command to 'stack' your three 2d matrices into a single 3d matrix: M = cat(3,x,y,z); This will giv...

mehr als 4 Jahre ago | 0

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Generate Random numbers from a 2 D probability density function
Conceptually, you can generate random numbers for any arbitrary distributions by # Converting the pdf to a cdf. # Generating...

mehr als 4 Jahre ago | 0

How to create an Object insertable in a 3D plot?
One approach could be to leverage the plotted object's XData, YData, and ZData, homogeneous coordinates, and the |makehgtform| f...

mehr als 4 Jahre ago | 0

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Surface area
Calculate surface area and centroid of a surface or mesh.

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Density altitude calculator
Finds altitude in the atmosphere as a function of air density.

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Show Origin
Sets the limits of axes such that the origin is shown.

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MCD - My change directory
Very quickly switch to a recent or preferred directory - all from the command line.

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Simple propulsion performance estimation
Tools for simple estimation of aircraft propulsion performance.