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Meg Noah


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176 total contributions since 2016

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Submitted


Restful Fortune Cookie
Gets a fortune cookie statement every 10 seconds and updates your cookie paper.

circa un mese ago | 1 download |

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Submitted


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

2 mesi ago | 12 downloads |

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Submitted


NASA Earthshots Image Getter
Demonstrates how to download NASA Earthshots data with RESTful get.

2 mesi ago | 2 downloads |

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Submitted


Excel Macro Example: Sun Rise, Set, Transit, Twilight
to demonstrate writing inputs and reading outputs from an xlsm spreadsheet

6 mesi ago | 1 download |

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Answered
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

7 mesi ago | 0

| accepted

Answered
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...

7 mesi ago | 0

Answered
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...

7 mesi ago | 0

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

7 mesi ago | 1

| accepted

Answered
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...

7 mesi ago | 1

Answered
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...

7 mesi 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...

7 mesi ago | 2 answers | 0

2

answers

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

7 mesi ago | 1

| accepted

Answered
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...

7 mesi ago | 0

| accepted

Answered
Loading multiple images, taking mean of them and subtracting background
change the .png for whatever file extension you are using. Are your image greyscale? If not, it might not make sense to backg...

7 mesi ago | 0

Answered
Alternating up and down in my script to find path through 'maze'
Try this algorithm: Goal:to assign a label to each connected track of 1's on a background of 0's. Procedure: Scan image left t...

7 mesi ago | 0

| accepted

Submitted


Asteroid, Baseball, etc. (obj mesh) Projected Surface Area
Calculate the projected area into wind axes for an obj (wavefront) that is a convex hull.

7 mesi ago | 5 downloads |

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Answered
How to filter data by date?
My suggestion is to convert all your times to an new variable of time in matlab's datenum format. A datenum is the number of da...

7 mesi ago | 0

Answered
Plotting a smooth curve
First, I added a header to the xlsx file so readtable can be used properly. myData = readtable('Data_help.xlsx'); figure() pl...

7 mesi ago | 1

| accepted

Answered
Errors with my code
You redefined y to zero it out and at a different dimension than t. Also some typos in the annotation. T1=[0:0.001:2]; Y1=(-1...

7 mesi ago | 0

Answered
Fourrier transform on image
Here's an example - the grid of features is space every 20 meters, the frequency found at 0.05/m corresponds to the frequency of...

7 mesi ago | 0

Answered
Axes after 2D fft
Some great online references are in the matlab code. Whenever I post links at the top of an answer, the answer gets flagged as ...

7 mesi ago | 0

Answered
flip an array with the use of vectors
a=[1 7 5 9 3 2 4 1]; a(3:6) = fliplr(a(3:6));

7 mesi ago | 0

Answered
readmatrix with numbers and text from .csv file
The problem is your last line has 5 columns. This seems to do what you're asking, and hopefully will be enough to get you start...

7 mesi ago | 0

| accepted

Answered
How do I get only the HR out of this .csv
If you post the file, or at least the first 20 lines or so, it would be easier to say which command is best to use. Generally, ...

7 mesi ago | 0

Solved


pressure to dB?
given x ratio of pressure, find corresponding y dB

7 mesi ago

Solved


Sum of the Matrix Elements
Add up all the elements in a NxM matrix where N signifies the number of the rows and M signifies the number of the columns. E...

7 mesi ago

Solved


Convert a vector into a number
This is a sub problem related to this problem: <http://www.mathworks.com/matlabcentral/cody/problems/621-cryptomath-addition>...

7 mesi ago

Solved


Say something funny
Say something funny, or not. Your solution will be (fully automatically and objectively) scored based on how clever or funny ...

7 mesi ago

Solved


Find the hypotenuse
Given a and b (the two sides of a right-triangle), find c, the hypotenuse.

7 mesi ago

Solved


Unit Matrix
Given n, you should return an n-by-n unit matrix. Example: If input is n=2 then A = [ 1 0 0 1 ] If input ...

7 mesi ago

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