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Osita Onyejekwe


Active since 2016

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vectorize a loop or two so that the program runs faster
can someone help me vectorize a loop or two so that my program runs faster? It runs but the results take AGES.. Here is the whol...

7 years ago | 0 answers | 0

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answers

Question


index exceeds matrix dimension
I am calculating mean squared errors for 5 different methods using 3 different sigmas. Each Method is going to be a comp...

7 years ago | 1 answer | 0

1

answer

Answered
capturing the same frame
<</matlabcentral/answers/uploaded_files/74551/if%20and%20end.png>> Here is another look

7 years ago | 0

Question


capturing the same frame
My frame is capturing the same beginning video frame in multiple figures. I want the multiple figure to be images of the video a...

7 years ago | 2 answers | 0

2

answers

Question


error in loading video file Climate.mp4
I'm trying to load a video file in directory to capture frames and i keep getting the error this error. Below is the code and t...

7 years ago | 1 answer | 0

1

answer

Question


plots the axis scale
I have two plots with the same x-axis but their y-axis are scaled differently. how do I make them the same scale? Here is my...

8 years ago | 1 answer | 0

1

answer

Answered
ploting/graphing confidence interval
thank you! :)

8 years ago | 0

Question


ploting/graphing confidence interval
after doing statistical calculations I have the following confidence intervals Confidence_interval_Negative_INFLPS = 0...

8 years ago | 2 answers | 0

2

answers

Question


optimize my code to work better
I have a code that calculates the Euclidean distance between X and Y and selects the minimum coordinate, and once that minimum c...

8 years ago | 1 answer | 0

1

answer

Question


Eucliedan Distances In two Arrays
I have an array of (X-Y) Coordinates, Observed_Signal_Positive_Inflection_Points_Coordinates = 0.1040 -0.0432 ...

8 years ago | 3 answers | 0

3

answers

Question


finding x and y coordinates
I have a plot on matlab with points on the plot. I would like to find the x,y coordinates of these points. How do I do that? I w...

8 years ago | 1 answer | 0

1

answer

Question


plotting points on my sine curve
Hello, I need help. Below is my code for a sine curve with plots across showing the change points. I want to add a different sha...

8 years ago | 0 answers | 0

0

answers

Question


Plotting points across the Sine Curve
I need help with my plot. I have points going across the sine function (zero-crossing). May someone please help me have differen...

8 years ago | 1 answer | 0

1

answer

Question


indices for zero crossing of a Sine Function
For the last 24 hours, I have been trying to find the indices of the zeros crossing of a simple Sine Function. I should get the...

8 years ago | 1 answer | 0

1

answer

Question


zero crossing and inflection point
can someone please in detail explain to me what this simple line of coding is doing in order to calculate zero crossing. I thoug...

8 years ago | 1 answer | 0

1

answer

Question


Points of Inflection for Sine Curve
In the code below, I have successfully detected the peaks of the sine curve. I have also put the peaks on the plot. May someone ...

8 years ago | 0 answers | 0

0

answers

Answered
find change points, point of inflection and concave up and concave down
and for the plot ylim([-1.05 1.05]) why -1.05 and 1.05 thank you that is all my questions!! :)

8 years ago | 0

Answered
find change points, point of inflection and concave up and concave down
one more question, for the second derivative why did you do ==2 and ==-2

8 years ago | 0

Answered
Finding the point of inflection on a curve
how do i do it for this? x = 1:500; X = x; J = 1; Fs = 499; N = J*Fs; t = 0: 1/Fs : J; Fn = 3; % this ...

8 years ago | 0

Question


find change points, point of inflection and concave up and concave down
This is my code and I want to find the change points of my sign curve, that is all and I want to put points on the graph where i...

8 years ago | 3 answers | 1

3

answers

Question


i need to write an algorithm to develop this math problem
Imagine two arrays, each given by: [1:1:100], overlap each other (See figure below). The “overlap depth” is random: a number, ...

8 years ago | 0 answers | 0

0

answers

Question


for and if statements
I need help generating a code that does the following For and if Generate an array of 10 random numbers between 1 and 100. T...

8 years ago | 1 answer | 0

1

answer

Question


trimming the first and last elements of a vector
let's say that i have a vector of yhat =506x1 and i have an h = 3 value how do I remove the first 3 elements and the last 3 e...

8 years ago | 1 answer | 0

1

answer

Question


subscript dimension error warning
I keep getting this error, Subscripted assignment dimension mismatch. Error in FCN_ECG_PLOTS (line 77) ...

8 years ago | 1 answer | 0

1

answer

Answered
complex sine graph plotting I need help
basically i want this entire graph to be in the domain to 100 instead of 1050..im just not sure how to scale it all down..can so...

8 years ago | 0

Question


complex sine graph plotting I need help
my complex sine graph is 1050 points. I want it to be just 100 points for some other math calculations. here is the function. ca...

8 years ago | 2 answers | 0

2

answers