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Jim O'Doherty


33 total contributions since 2011

Professional Interests: medical image processing, physics, nuclear imaging

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Question


how to remove empty cell array contents?
Hello, I've got a cell array, lets say: R = [ 691x2 double] [] [] [] [] [ 12x2...

2 years ago | 2 answers | 7

2

answers

Question


problem with waitbar cancel button
All, I'm encountering a little problem with a cancel button on a waitbar. I can get the Matlab example in the help file to wo...

3 years ago | 2 answers | 0

2

answers

Question


help using dlmread/csvread please
All, I thought this would be an easy one but after 45 minutes of trying I can't seem to read in my .csv file. I've been tryin...

3 years ago | 2 answers | 1

2

answers

Question


Datetick showing too few data labels in a plot
Hi, I've got some data I'm reading into Matlab from a txt file which contains times, which I am plotting in a GUIDE figure. I...

4 years ago | 1 answer | 0

1

answer

Answered
Unix commands in Matlab
I've managed to get some help elsewhere on this issue, thought I'd post here in case anyone else has the same problem. Echo ...

4 years ago | 1

Question


Unix commands in Matlab
Hi, I've installed a series of binaries which appear in usr/local/bin on my MACOSX (They're called DCMTK). The usr/local/bin ...

4 years ago | 1 answer | 1

1

answer

Question


Convolution Integral help please
All, I'm looking to solve the following convolution integral integral from 0 to t of: C0(t'+0.471)*exp(-2.1(t-t')/(0.03...

5 years ago | 0 answers | 0

0

answers

Question


help with plotting 3 data series
Hi, I've got some data like this: data=[1 76 67 76 2 61 53 54 3 63 54 58 4 74 63 72 5 64 67 69 6 50 51 50...

6 years ago | 1 answer | 0

1

answer

Question


Read data from serial device
Hi, I'm trying to read data from a device which constantly spits out data (every second I think). I've found some very good t...

6 years ago | 1 answer | 0

1

answer

Question


Read data from serial device
Hi, I'm trying to read data from a device which constantly spits out data (every second I think). I've found some very good t...

6 years ago | 0 answers | 0

0

answers

Answered
Can I read a single field using DICOMINFO?
Just to post a follow up - I found a way around this using the dicomtoolkit (just google dcmtk). I'm using a Mac This gives y...

6 years ago | 1

| accepted

Question


reading a number from a string
Hi all, I've got a set of strings that are either [1x80] or [1x81], and I'm trying to parse an increasing number from the str...

6 years ago | 3 answers | 0

3

answers

Question


Can I read a single field using DICOMINFO?
Hi all, Ive got a pretty large number of dicom files, and using "dicominfo" for each image is causing my GUI to run extremely...

6 years ago | 2 answers | 0

2

answers

Question


GUI error problem on starting, but no changes to code
Hi, I've been running a fairly complex GUI I created, and it was working fine until I pressed a button while a waitbar was r...

6 years ago | 0 answers | 0

0

answers

Answered
How to determine the position of an integer
Hi Vivekram, I'd sugget using the "unique" command [C, ia, ic]=unique(d) ic will give you the indices of the numbers in...

6 years ago | 0

Question


unique values in array
Hi all, I'm sure this is probably very easy but I can't seem to crack it. I've got an array like so: timing = ...

6 years ago | 1 answer | 0

1

answer

Question


help with impoly error
Hello, I've recently been developing a GUI, which worked fine until Matlab crashed while running an unrelated code. A section...

7 years ago | 0 answers | 0

0

answers

Question


help using Xpath and XML reading
Dear all, I'm recently new to using Matlab to navigate through an XML file, and have a feeling theres a simple answer to my q...

7 years ago | 1 answer | 0

1

answer

Question


cancel a call to impoly
All, I'm manually outlining a series of ROIs on some 3D data, and would like to know how to cancel a call to impoly (i.e. whe...

7 years ago | 0 answers | 0

0

answers

Question


generate 11x11x11 symmetric matrix from 6x6x6 matrix
Hello, I'm slowly going mad trying to accomplish something I feel is actually rather simple. I've got a 6x6x6 matrix whic...

7 years ago | 1 answer | 0

1

answer

Question


regions of interest on 3D dataset
All, I've got some 3D medical data (128x128x128) in a GUI. I'd like to be able to manually draw ROIs on about 25 of the ima...

7 years ago | 1 answer | 0

1

answer

Question


help in making a cumulative histogram, histc or accumarray?
All, I have some data that I would like to create a cumulative histogram of. The bins I would like to use are like bins=...

7 years ago | 2 answers | 0

2

answers

Question


help with reading DICOM
All, I'm reading in a 3D DICOM dataset using the following function. The file is 300 images of 512x512 slices. Each slice is ...

7 years ago | 0 answers | 0

0

answers

Question


Licensing issue with compiled code - am I illegal?
All, I have an academic license of Matlab, and this license is owned by my employer. I have recently written some demonstrati...

7 years ago | 2 answers | 1

2

answers

Question


Contribution from all pixels to 1 pixel
Hello all, I've got a series of 2D image slices, with each pixel being a measure of intensity. I'm looking to work out the co...

7 years ago | 1 answer | 0

1

answer

Question


access to handles structure in WindowButtonDownFcn
Hello, I've got a GUI, and I would like to be able to access the most up to date handles structure in the WindowScrollWheelFc...

7 years ago | 1 answer | 0

1

answer

Question


compiling boundaries into a volume
Hello, I've got a loop that outputs the coordinates of 3 segmented shapes in an image (using bwboundaries), and currently plo...

8 years ago | 0 answers | 0

0

answers

Question


no access to matlab toolboxes
Hello, My licence attributes for my individual licence says I should have access to the following: Matlab Simulink ...

8 years ago | 1 answer | 0

1

answer

Question


matrix addition
All, I've got a 3-d matrix, sum_total(:,:,i) "i" is in a loop, and can be anything from 20 to 100, therefore making the length...

8 years ago | 1 answer | 0

1

answer

Question


help with montage function
All, I have a stack of images which is 63x64x16 and is a uint16 class. Any idea how I would make a montage using the montage fu...

8 years ago | 1 answer | 0

1

answer

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