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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...

mer än 8 år ago | 0 answers | 0

0

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....

mer än 8 år 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...

nästan 9 år 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...

nästan 9 år 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...

nästan 9 år 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...

nästan 9 år 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 ...

nästan 9 år 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...

mer än 9 år 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...

mer än 9 år 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...

mer än 9 år 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...

mer än 9 år 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...

mer än 9 år ago | 2 answers | 0

2

answers

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

mer än 9 år 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...

mer än 9 år 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...

mer än 9 år 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 ...

mer än 9 år ago | 4 answers | 0

4

answers