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Andy


Active since 2013

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Creating a simple perception algorithm
I am trying to do a simple perception model using Rosenblatt’s training algorithm. Z is my data set where column 1 is my x val...

8 years ago | 0 answers | 0

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answers

Question


Color curve/Tone curve for an image
If you open up an image editor such as Gimp or photoshop, in addition to the image histogram you can also view the colour curve....

8 years ago | 2 answers | 0

2

answers

Question


How to divide a plot into different regions
I have a random set of points which I intend to plot in different colours depending on their region. I am struggling on what f...

8 years ago | 1 answer | 0

1

answer

Question


Correctly sum image values
I have a standard rob image im = imread('myIm.jpg'); I want to access values within this image so that i can calculate t...

8 years ago | 2 answers | 0

2

answers

Question


How to vectorise loop to improve performance
I have a loop which i am running through 20000 times, to find which class each element of my array is closest to, and also if th...

8 years ago | 1 answer | 0

1

answer

Question


Textscan with multiple delimiters
I want to read a text file into a cell array so that i have each line of my file as a new row and each attribute in my file as a...

8 years ago | 2 answers | 0

2

answers

Question


Read data file with strings and integers
I have a .txt file i want to read. Each line has a character and then integers delimited by commas. I want to read the file so ...

8 years ago | 1 answer | 0

1

answer

Question


Logic issues for creating a random walk
I have a set of random points plotted. I want to create a random walk between all of these plotted points so they are all visit...

9 years ago | 1 answer | 0

1

answer

Question


Derive a colour palette from an image
I have a question which asks to set the number of rows and columns (M and N) for the painting grid and resize an image to this r...

9 years ago | 1 answer | 0

1

answer

Question


Displaying text correctly on buttons
I have a 10x10 grid of buttons and i want to set the text of each button to a random number between 1 and 100 which i have alrea...

9 years ago | 2 answers | 1

2

answers

Answered
Rotate co ordinates by a rotation matrix.
Hi Kye, You assumed correctly, i did want to use degrees my co ordinates are 1 by N. All is working great now, thank you for...

9 years ago | 1

Question


Rotate co ordinates by a rotation matrix.
I have a set of x and y co ordinates which make up a random shape. I want to be able to rotate the shape 360 degrees in an anima...

9 years ago | 2 answers | 0

2

answers

Answered
Area plot style graph
Thank you that was just what i was after, all working now.

9 years ago | 0

Question


Area plot style graph
I am trying to recreate a graph. There is 3 layers and i want the values of each layer to oscillate between particular values. I...

9 years ago | 2 answers | 0

2

answers

Answered
Plot points in a different colour depending on co ordinates
Thank you for the replies. I managed to work it out with a combination in the end. In the end i used a for loop, going through m...

9 years ago | 0

Question


Plot points in a different colour depending on co ordinates
I want to be able to plot my points in a scatter plot and if the points are within the co ordinates of two circles they will be ...

9 years ago | 4 answers | 0

4

answers