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# Meg Noah

##### Last seen: 2 days ago
191 total contributions since 2016

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Segment Ellipse into Equal Area Sectors
Can segment from FOCUS or CENTER of ellipse.

Reconstructing Audio from Spectrogram
istfit then wavwrite?

20 days ago | 0

How do I import a txt file with the white spaces
This seems to work if you don't mind working with a table readtable('file22.txt','whitespace','','delimiter',',')

20 days ago | 0

Errorbar plotting in MATLAB
vec1 = rand(20,1); vec2 = 20*rand(20,1)-15*rand(20,1); vec3 = 3*rand(20,1); med = [median(vec1) median(vec2) median(vec3)]; ...

21 days ago | 0

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How to display a percent sign (%) using latex and sprintf
% not using latex loveMetric = 99.99; fprintf(2,'I love matlab: %0.8f %%\n', loveMetric);

22 days ago | 0

Getting point cloud directly from a 3D CAD STL Model in Matlab
There is a program on matlab central that returns the coordinates x,y,z that are the point cloud https://www.mathworks.com/matl...

22 days ago | 0

4D plot of 3 vectors and 3D array
In this project, I show a couple of 3D vis techniques https://www.mathworks.com/matlabcentral/fileexchange/71774-create-measure...

22 days ago | 0

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Best tool for complex classification?
metricvalues = zeros(npts,nvar); % find magnitude and phase of the complex values as metrics % fillup the metricvalues array ...

22 days ago | 0

Submitted

Ground-Wave Propagation, Earth Surface Dielectric Properties
Compute the attenuation of a LF Ground Wave for a given permittivity and conductivity. Model the complex permittivity of Earth ...

Submitted

Create, Measure, Characterize, Visualize 1D, 2D, 3D Fractals
Creation of fractal curves, surfaces, & volumetric density as well as techniques to measure 1D, 2D, and 3D fractal dimension and...

Submitted

Negative Zeros of the Airy Functions
Calculates the negative zeros of the Airy functions Ai(Z) or Bi(Z) or the negative zeros of the derivative Airy functions Ai'(Z)...

Submitted

Area Normalized 1D Supergaussian and Fitting Noisy Data
Creates area normalized 1D Supergaussian profile.

Submitted

Asteroid Light Curve
Create a nice plot of NEO F4244 asteroid light curve.

Submitted

SKYLAB
Propagate the July 4, 1979 Skylab TLE to its July 11, 1979 re-entry and crash on Earth.

RKF method for second order ODE
https://ntrs.nasa.gov/citations/19690021375 Low-order classical Runge-Kutta formulas with stepsize control and their applicatio...

5 months ago | 0

RKF method for second order ODE
https://ntrs.nasa.gov/citations/19680027281 Classical Fifth-, Sixth-, Seventh-, and Eighth-Order Runge-Kutta Formulas with Step...

5 months ago | 0

Submitted

Submitted

Image Texture for Region Classification
Graylevel images can be segmented, characterized by their local texture.

Submitted

NASA Earthshots Image Getter

Submitted

Excel Macro Example: Sun Rise, Set, Transit, Twilight

Plotting stacked graphs with diff x-axis together without any gap
I have an example here: https://www.mathworks.com/matlabcentral/fileexchange/70172-space-weather-data-solar-flux-10-7-cm

1 year ago | 0

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How to convert euler angle(roll pitch yaw) to position(x,y,z)
Position is a separate measurement from roll, pitch, yaw. Position is the location of the entity, such as an aircraft. Typical...

1 year ago | 0

How to write a function for a certain number of random numbers
If the numbers are supposed to be uniformly distributed, then they are between 0 and 1. So just linearly scale the value 0 to th...

1 year ago | 0

Hurst exponent in matlab
Here's one way, but you'll have to change it to have pixels as length dimensions: %% *fractalDimension* %% *definition* funct...

1 year ago | 1

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Initializing multidimensional array and dynamic expansion
If you know the size you want: A = zeros(nrow,ncol); or A = zeros(nrow, ncol1, ncol2,ncol3); etc. Can also initialize to a...

1 year ago | 1

how to find index of each occurrence of my pattern in a file
This solution will find the lines that contain the whole phrase. The example illustrates how to consider or not consider the cas...

1 year ago | 0

Question

How can uicontrol be used to make an editable dropdown (eg combobox) control?
I'd like to use the uicontrol of matlab and its arguments rather than the uidropdown. But I want the uidropdown functionality o...

1 year ago | 2 answers | 0

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How to reverse the order of words in string
There's undoubetly better solutions, but: strtrim(strrep(cell2mat([flipud(split('Hello. I. am. Here.'))']),'.','. '))

1 year ago | 1

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How to change interval unit of x axis
Here's one way You can do shape downsampling - reshape then sum the lines. I made some data by digitizing yoour plot. It's att...

1 year ago | 0

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