Question

Change or remove duplicate matrix elements

I have the matrix: value = 3.1727 5.2495 5.2708 3.3852 5.6222 5.2708 5.1444 4.9834 ...

5 years ago | 3 answers | 0

Question

Constructing a symmetric matrix

Hello! I am trying to construct a symmetric matrix, B, from a random matrix, A My code is as follows: scale=6; ...

6 years ago | 1 answer | 0

Question

Basic iterative schemes in matlab

Hello, I am becoming acquainted with solving basic linear problems in matlab iteratively. So, I apologize for this very basic...

6 years ago | 1 answer | 1

Question

Construct tri or penta diagonal matrix from an exisiting matrix

Dear all, I am constructing a random number matrix, for instance A=randn(10,10) For this matrix, I would like to be able t...

6 years ago | 1 answer | 0

Question

Contour/3d plots for large data sets

Hello, I would like to generate a contour or 3-D plot for a large data set. I have a matrix B, where size(B)= 483060 4 ...

6 years ago | 1 answer | 0

Question

Finite center difference of poisson equation

Hello! This is my first time attempting to write a finite difference method in matlab, and I am a bit confused about how to c...

7 years ago | 0 answers | 0

Question

Finding radius by fitting circles to partial lines

Hello, I am trying to find the radius of circles from images which contain only a portion of the circle image, like this: http:...

8 years ago | 2 answers | 0

Question

Fitting circles/finding centers

Hello, I have images that look like this http://postimage.org/image/cis2x0wd3/ from a Zeeman experiment. I would like to find...

8 years ago | 1 answer | 0

Question

How to open to convert *.b files using Matlab

Hello, I have a series of files to be opened in matlab, which were made in Yorick with the extension *.b. How can I open these ...

8 years ago | 0 answers | 0

Question

Best way to store a variable outside of a loop

Hello! I have a program that runs through a series of images, which are called upon by iterating the number at the end of the...

8 years ago | 1 answer | 0

Question

Finding largest peaks in a graph

Hello! I am writing a little program to plot out the intensities of split spectral lines from a Zeeman experiment. I get g...

8 years ago | 1 answer | 0

Question

Minimizing and plotting equations with variables

Hello! This is probably quite a rudimentary question, but I am not familiar with solving equations in matlab, and would great...

8 years ago | 1 answer | 0

Question

Fitting a curve to data

Hello, I am trying to test out the validity of Taylor-Sedov analytical solution to an experimental data set. I want to fit...

8 years ago | 1 answer | 0

Question

Locating point where slope becomes most steep

Hello, I am trying to extract data from this graph, generated from the image to the right of it: http://img3.imageshack.us/i...

8 years ago | 2 answers | 0

Question

Finding coordinates of peaks

Hello, I have a data file that looks like this: http://imageshack.us/photo/my-images/26/peakds.jpg/ and I would like to ret...

8 years ago | 1 answer | 0

Question

Converting uint8 array into 32-bit

I have a 1280x960 uint8 array that I would like to convert into uint32. Any suggestions? Thanks!

8 years ago | 2 answers | 0

Question

Renaming files in a folder

Hello, I'm written the following code to rename files in a folder. However, for whatever reason it is not working. Any idea w...

9 years ago | 1 answer | 0

Question

Error on the slope when using a least squares fit

Hello, I am fitting a slope to data points using least squares fit (polyfit), but I also need to know the error on the slope ...

9 years ago | 1 answer | 0

Question

Superimposing graphs with different axis

Hello, I have a routine that creates 70 graphs, each with different axis. (i.e. 70 images of the same size, but with differen...

9 years ago | 1 answer | 0

Question

Centering a histogram around the median

Hey, I have data that I am plotting a histogram with, and I want to center my histogram on the mean, with six bins (i.e 3 on ea...

9 years ago | 1 answer | 0

Question

Error: Subscripted assignment dimension mismatch

Hello, I have a 48x64 matrix, let's call it dummy, and I have located all of the non-zero values in dummy(:). returned as ...

9 years ago | 1 answer | 0

Question

Creating a text file through Matlab

Hello, I want to save parameters from a program that I am running to a separate text file, while the program is in progress. ...

9 years ago | 1 answer | 0

Question

Restricting matrix values

I have a matrix: points= 37 29 36 30 37 30 35 31 36 31 37 31 36 32 ...

9 years ago | 1 answer | 0

Question

Renaming parameters in a loop, Comparing Z-Scores

I have a 48x64x41 array where the dimensions are vertical x horizontal x time. I need to compare the z-score array values for t...

9 years ago | 2 answers | 0

Question

Returning parameters from a called function

Hello! I have what may be an elementary question, but I have been struggling with it for a little while: I am calling anothe...

9 years ago | 2 answers | 0

Question

Rotating a Vector

Hello! I am wondering if anyone has an elegant way to rotate a vector by a specified degree. For example, I have a vector th...

9 years ago | 4 answers | 0

Question

Changing font size using xlabel

[EDIT: Mon Jun 6 16:32:41 UTC 2011 - Reformat - MKF] Hello, I am putting a label on a graph using xlabel, and I want to increas...

9 years ago | 3 answers | 1

Question

Improving resolution of a loaded image

I am working with two routines that create images, and save them automatically with saveas (as .png files) to a folder. I then w...

10 years ago | 1 answer | 0

Answered

Loss of resolution with imread?

Switched the image type to pnf and the resolution problem was solved.

Loss of resolution with imread?

Switched the image type to pnf and the resolution problem was solved.

10 years ago | 0

| accepted

Question

Loss of resolution with imread?

I am loading some images to another program using imread, and I have noticed that the resolution for some graphs that are saved ...

10 years ago | 2 answers | 0