Solved

Project Euler: Problem 8, Find largest product in a large string of numbers
Find the greatest product of five consecutive digits in an n-digit number. 73167176531330624919225119674426574742355349194934...

23 dagar ago

SAME VALUE ON EVERY LOOP...
This loop in your code looks suspicious to me: % change material properties of lesion for i=1:indices_1 t_id = elem_e(:);...

23 dagar ago | 0

Vector entry differs from the others
Try using isoutlier and rmoutliers.

24 dagar ago | 0

| accepted

Published

How to Detect an X-Rite® ColorChecker® Chart
When I saw this picture, I was really tempted to take it into the local garden nursery and ask them how to keep color...

25 dagar ago

Solved

Project Euler: Problem 7, Nth prime
By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13. What is the Nth prime nu...

25 dagar ago

Arrange words and phrases separated by semi-colon into a single column
% Simulated data covering two months. Phrases = ["EARLY-TYPE GALAXIES; X-RAY; DENSE CLUSTERS" "LOCAL CONVERGENCE DEPTH; TU...

26 dagar ago | 0

| accepted

Solved

Project Euler: Problem 6, Natural numbers, squares and sums.
The sum of the squares of the first ten natural numbers is, 1^2 + 2^2 + ... + 10^2 = 385 The square of the sum of the first ...

26 dagar ago

Solved

Project Euler: Problem 5, Smallest multiple
2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder. What is the smalle...

27 dagar ago

How to find integral over 2D image
Try integralImage. This function computes a cumulative in both directions, which would approximate the two-dimensional integral ...

27 dagar ago | 0

How do I get the actual mesh Vertices and Triangles generated by the spiralRectangular function in the Antenna Tool Box?
I don't see a documented interface for this, but you can find the patch object produced by the show method and then get the face...

ungefär en månad ago | 0

Disoriented Matlab output plot
Try using a regular text object instead, like this: text(0,41.75,string(0),'FontSize',8,'HorizontalAlignment','center')

ungefär en månad ago | 0

Solved

Project Euler: Problem 3, Largest prime factor
The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number being input, input might be ui...

Solved

Project Euler: Problem 2, Sum of even Fibonacci
Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 te...

Log axis with percentage tick labels
From what I can tell, the ruler object ignores the TickLabelFormat property (which is set by ytickformat) when the Scale is 'log...

ungefär en månad ago | 0

Help calling my basic function
You must use the filename as the function name when calling your function. MATLAB will not pay attention to the "n" inside the f...

ungefär en månad ago | 1

Why does evaluating a function with symbolic variables take so much longer than with a double?
When MATLAB performs arithmetic on normal numeric values, which are represented internally as double-precision floating-point nu...

ungefär en månad ago | 2

| accepted

Published

Making Color Spectrum Plots – Part 3
Recently, I've been explaining how I made this plot, which is from DIPUM3E (Digital Image Processing Using MATLAB, 3rd ed.):...

Published

What is 0.01?
I was looking at these two numbers the other day:$0.01$$\frac{5764607523034235}{576460752303423488}$It turns out they are...

Published

Making Color Spectrum Plots – Part 2
It was a while ago now, but on April 27 I started explaining how I made this plot, which is from DIPUM3E (Digital Image...

Submitted

MATLAB Color Tools
MATLAB Color Tools is an experimental collection of MATLAB functions related to color science computation and visualization.

Published

Making Color Spectrum Plots – Part 1
The new edition of Digital Image Processing Using MATLAB (DIPUM3E) contains a number of MATLAB functions related to color,...

Published

Geometric Transformation of Points – Getting Started
I like to think of geometric transformations of images (stretching, shrinking, rotating, etc.) by starting with the...

Published

How to Display Color Swatches
When working on the "Color Image Processing" chapter of DIPUM3E, I found myself often wanting to display square blocks (or...

Published

Digital Image Processing Using MATLAB, 3rd edition
The 3rd edition of Digital Image Processing Using MATLAB (DIPUM3E) has just been published, at long last. The new edition...

Published

Treble clefs, Unicode, SVG, strings, Bézier curves, kron, implicit expansion, and polyshape
Today I will show you how I plotted this treble clef symbol in MATLAB: My discovery and implementation process for doing...

Published

How to Write Animated PNG (APNG) Files from MATLAB
Today, I'm writing about how to create animated PNG (APNG) files, such as this one: I first wrote about APNG files last...

Submitted

Animated PNG (APNG) Writer
Create APNG (animated PNG) files

Published

How to Go a Little Crazy with Graphics Titles
The title function is the third most commonly-used function in my 13 years of writing this blog, after imshow and imread....

Published

How to Overlay a Color on an Image Using a Mask
In my first year of writing this blog (2006!), I showed how to overlay a color onto an image based on a mask. This was the...