Answered

Image segmentation problem, need help

That's a cool problem. I would tend towards a solution that involved filling the 'empty' region from your thresholded 3rd image...

Image segmentation problem, need help

That's a cool problem. I would tend towards a solution that involved filling the 'empty' region from your thresholded 3rd image...

12 years ago | 0

Answered

Order cell array

There's a couple of ways to do this... I assume you want the numbers in ascending order. This works, but relies on the stabili...

Order cell array

There's a couple of ways to do this... I assume you want the numbers in ascending order. This works, but relies on the stabili...

12 years ago | 0

| accepted

Answered

problem with rotation matrix

Your code works fine, but you're just not plotting it correctly. plot(obstacle_shape(:,1), obstacle_shape(:,2)); You m...

problem with rotation matrix

Your code works fine, but you're just not plotting it correctly. plot(obstacle_shape(:,1), obstacle_shape(:,2)); You m...

12 years ago | 0

| accepted

Answered

Contour plot of spatial distribution of temperature

I would start by removing the invalid readings: archivo( archivo(:,5) < -999, : ) = []; You need to have a higher (and u...

Contour plot of spatial distribution of temperature

I would start by removing the invalid readings: archivo( archivo(:,5) < -999, : ) = []; You need to have a higher (and u...

12 years ago | 0

| accepted

Answered

Vector against a mirror

From memory... I could be wrong here. Make sure your incoming ray |R| and surface normal |N| (which points out) are both uni...

Vector against a mirror

From memory... I could be wrong here. Make sure your incoming ray |R| and surface normal |N| (which points out) are both uni...

12 years ago | 0

| accepted

Answered

Trouble finding end of a column in Matlab using xlsread

Do you mean this? while( ~isempty(alldata{i,4}) && i < (x-1) )

Trouble finding end of a column in Matlab using xlsread

Do you mean this? while( ~isempty(alldata{i,4}) && i < (x-1) )

12 years ago | 0

Question

MatLab and virtual memory... Who leaked on my disk?

I ran a big job over the weekend, and got back to work this morning to find it was (quite unexpectedly) only 25% complete. Sinc...

12 years ago | 0 answers | 0

Answered

secd vs sec

Because your data ranges are different. The area underneath the curve spanning |-89.5:0.001:89.5| is approximately |180/pi| t...

secd vs sec

Because your data ranges are different. The area underneath the curve spanning |-89.5:0.001:89.5| is approximately |180/pi| t...

12 years ago | 2

| accepted

Answered

I have written a code please help me in getting the output .

Is the output wave supposed to be 8-bit? That's exceptionally grungey... I don't use these wave file functions, but I expect t...

I have written a code please help me in getting the output .

Is the output wave supposed to be 8-bit? That's exceptionally grungey... I don't use these wave file functions, but I expect t...

12 years ago | 0

Answered

matlab 2011b installation problems

Do you have the whole MatLab installation inside a zip file? Normally it comes with a self-extracting executable called somethi...

matlab 2011b installation problems

Do you have the whole MatLab installation inside a zip file? Normally it comes with a self-extracting executable called somethi...

12 years ago | 0

| accepted

Answered

Windows 7 GUI issue

I have absolutely no problem in R2012a on Windows 7 with the following code: f = figure; set(f, 'Position', [0, 0, 1920,...

Windows 7 GUI issue

I have absolutely no problem in R2012a on Windows 7 with the following code: f = figure; set(f, 'Position', [0, 0, 1920,...

12 years ago | 0

Answered

How to Convert A Matrix into Excel format

Look at the |xlswrite| function. doc xlswrite

How to Convert A Matrix into Excel format

Look at the |xlswrite| function. doc xlswrite

12 years ago | 0

| accepted

Answered

mysolve help

Does it work? What specific answer do you require? I can offer a couple of things just from a quick glance... Your comment ...

mysolve help

Does it work? What specific answer do you require? I can offer a couple of things just from a quick glance... Your comment ...

12 years ago | 0

Answered

Save one image as part of a larger image

Let's just assume that all your images are in a 3D matrix and you want to slap them onto a canvas: canvas = zeros(1000, 512...

Save one image as part of a larger image

Let's just assume that all your images are in a 3D matrix and you want to slap them onto a canvas: canvas = zeros(1000, 512...

12 years ago | 0

| accepted

Answered

Dumb mistakes we make with MATLAB.

Corrupting years of experience in other languages... After using MatLab for several months now, I find that when I go back to...

Dumb mistakes we make with MATLAB.

Corrupting years of experience in other languages... After using MatLab for several months now, I find that when I go back to...

12 years ago | 0

Answered

Histogram?

It's sorta weird to take the histogram of a 2D image... I don't know what it's going to tell you... Well, maybe it's not weird...

Histogram?

It's sorta weird to take the histogram of a 2D image... I don't know what it's going to tell you... Well, maybe it's not weird...

12 years ago | 0

Answered

Matching intermittant data to regular time base

I'm just throwing this out there... Here's what I do to match my weather data to a specified time scale. I do actually throw a...

Matching intermittant data to regular time base

I'm just throwing this out there... Here's what I do to match my weather data to a specified time scale. I do actually throw a...

12 years ago | 0

Answered

importdata skips the last few rows?

That's odd... Confirmed in my own 2012a. It appears to be trimming all the entirely NaN rows from the end of your data. I...

importdata skips the last few rows?

That's odd... Confirmed in my own 2012a. It appears to be trimming all the entirely NaN rows from the end of your data. I...

12 years ago | 2

| accepted

Answered

Urgent! .....Compass plot

Why is this urgent? Try this: set(gca,'xdir','reverse') Or if you want the zero on the right as normal, do this inste...

Urgent! .....Compass plot

Why is this urgent? Try this: set(gca,'xdir','reverse') Or if you want the zero on the right as normal, do this inste...

12 years ago | 0

| accepted

Answered

reducing resolution of an image

Think about it... If you half the width and height, that means each group of 2x2 pixels becomes one pixel. You average the p...

reducing resolution of an image

Think about it... If you half the width and height, that means each group of 2x2 pixels becomes one pixel. You average the p...

12 years ago | 2

Answered

Limit to Textscan?

Thanks for clarifying what your data looks like. I assume that comma immediately after the '4' is a mistake. You could proba...

Limit to Textscan?

Thanks for clarifying what your data looks like. I assume that comma immediately after the '4' is a mistake. You could proba...

12 years ago | 0

| accepted

Answered

plotyy how to make yaxis align at zero

Well, if I plot some test data: [ax, h1, h2] = plotyy([1 2 3], [-1 5 6], [2 3 4], [-2 1 -1]/2); I get back two axis hand...

plotyy how to make yaxis align at zero

Well, if I plot some test data: [ax, h1, h2] = plotyy([1 2 3], [-1 5 6], [2 3 4], [-2 1 -1]/2); I get back two axis hand...

12 years ago | 0

| accepted

Answered

Generate 0 and 1

I wouldn't do this using the |double| version of |rand|. While it's not really incorrect to use |rand| for this, I would use |r...

Generate 0 and 1

I wouldn't do this using the |double| version of |rand|. While it's not really incorrect to use |rand| for this, I would use |r...

12 years ago | 0

Answered

Limit to Textscan?

I doubt there is a limit for the tiny numbers you're talking about. What I expect has happened is that |textread| encountered...

Limit to Textscan?

I doubt there is a limit for the tiny numbers you're talking about. What I expect has happened is that |textread| encountered...

12 years ago | 0

Answered

how to delete NaN from a column of data

If all you want is the mean, just use |nanmean|: help nanmean There are a bunch of functions that explicitly ignore NaN ...

how to delete NaN from a column of data

If all you want is the mean, just use |nanmean|: help nanmean There are a bunch of functions that explicitly ignore NaN ...

12 years ago | 0

| accepted

Answered

groupby of one column

Selection is different from grouping. If you just want |instance_no| and |delays| where |message_no=2|, you can do this (assumi...

groupby of one column

Selection is different from grouping. If you just want |instance_no| and |delays| where |message_no=2|, you can do this (assumi...

12 years ago | 1

Answered

Detect different colors in RGB colorspace

Are you trying to detect a specific colour? All you are doing here is thresholding, and your code is going to detect anything t...

Detect different colors in RGB colorspace

Are you trying to detect a specific colour? All you are doing here is thresholding, and your code is going to detect anything t...

12 years ago | 0

Solved

Who Has the Most Change?

You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...

12 years ago

Solved

Return the largest number that is adjacent to a zero

This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

12 years ago

Solved

Swap the first and last columns

Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

12 years ago