Jason

Last seen: 2 dagar ago | Active since 2011

Followers: 0 Following: 0

Message

Statistics

Feeds

Question

Heatmap and surf plot of same data is looking different. Also is there a better way to 2D smooth
Hello, I am trying to estimate the background of this image. One way I would like to try is to break the image up into small re...

4 dagar ago | 1 answer | 0

1

answer

Answered
Image analysis - Bounding Box converted to Circular Mask
This seems to work: result=[]; for i=1:n R=max(BB(i,3),BB(i,4)); ...

6 dagar ago | 0

Question

Image analysis - Bounding Box converted to Circular Mask
Hello, I have a greyscale image that I have located the centroids, binarised, area filtered and then drawn bounding boxes around...

6 dagar ago | 2 answers | 0

2

answers

Question

Help with getting data from image at equidistant positions from the centre - to include the "off circle corners"
Hello, I have an image and I want to get the median of data at each radius value. This is shown by the yellow circles - so eac...

17 dagar ago | 3 answers | 0

3

answers

Question

App designer Line Number jumps, hiding Code
Hello, has anyone else observed a jump in line number in the "code View" editor in appdesigner. In the example below it goes fro...

28 dagar ago | 1 answer | 0

1

answer

Answered
automate scatter markers colours in groups
Perhaps I should start a new question, apologies if I should. The data I showed in groups of 2 has the same measurement in pa...

ungefär en månad ago | 0

Question

automate scatter markers colours in groups
Hello, I have a line plot with 28 points, and I want to colour the points in groups of 2, so points 1,2, 3,4, 5,6 I start...

ungefär en månad ago | 5 answers | 0

5

answers

Answered
Creating new data where each new row is the minimum (of 2nd column) of each 2 rows.
Seems like this works (had to delete last row from data) B = reshape(y,[2,10]) % Each column is a pair of row data C=min(...

ungefär en månad ago | 0

| accepted

Question

Creating new data where each new row is the minimum (of 2nd column) of each 2 rows.
Hello, I have the following data and I want to create a new set such that for each 2 rows of data, the row is taken with the lo...

ungefär en månad ago | 1 answer | 0

1

answer

Question

Make calculation on line profile (Intensity) through object on image
Hello, I have an image that I want to approx the size of the central blob. For this I just create a line profile fo the in...

ungefär en månad ago | 2 answers | 0

2

answers

Question

Filtering Blobs on a Binary Image
Hi, I have a 12bit grayscale image of some beads. I want to make measurements on the central one and as a first approach, I want...

ungefär 2 månader ago | 1 answer | 0

1

answer

Question

Column Format in a Table when using writetable
Is there anyway to format certain columns in a table. My table looks like this in the command window, T = 10×5 table ...

2 månader ago | 2 answers | 0

2

answers

Question

Assigning Columns to a table without using loops - and perform i.e. diff on a column
Hello, I have an events log that I want to be able to pull out relevant times and types of triggers into an array of some sort....

2 månader ago | 1 answer | 0

1

answer

Question

Left Justifying a String obtained from the formattedDisplayText() function
Hello, I asked a question here https://uk.mathworks.com/matlabcentral/answers/2173785-extracting-number-after-a-string-in-header...

2 månader ago | 1 answer | 0

1

answer

Question

Getting relative time from two events identified as absolute time
Hello, I haver a time event (AbsTime) reported as a double and I want to pull out the time since the 1st event (E0) How can I...

2 månader ago | 1 answer | 0

1

answer

Question

Extracting number after a string in header of CSV file
Hello, I have a CSV file that contains information in the headers and then numerical data. I have no problem loading the numeri...

2 månader ago | 2 answers | 0

2

answers

Question

Extracting Zoomed in part of curve and finding rising Edges of data
Hello, I have a plot consisting of "square-ish" TTL pulses and I want to be able to 1: Extract the data thats in the "Zoomed" X...

3 månader ago | 1 answer | 0

1

answer

Question

Variable number of inputs in inputdlg with pre-selected values when inputs equals 6
Sometimes I want to replace the column headings in a uitable. I have several uitables and each can have a variable number of co...

3 månader ago | 1 answer | 0

1

answer

Question

Issues with tables and writetable from data passed from uitable
Hello, I have an array in a uitable that I want to save to a csv file as well as the column headings. It seems out of the write...

3 månader ago | 1 answer | 0

1

answer

Question

Variable Names not being read into uitable using readmatrix
Hi, I am trying to read a csv files into a uitable and am having problems reading the variable names in. The csv was saved usin...

3 månader ago | 1 answer | 0

1

answer

Answered
Problem with converting uitable to table (array2table) with strange number of column names
This seems to work, but is quite a lot for such a simple task T=app.UITable; vn=T.ColumnName; ...

3 månader ago | 0

| accepted

Question

Problem with converting uitable to table (array2table) with strange number of column names
Hello, I have a UITable that on startup has 4 columns. I want to create some dummy data (3 columns) and play with the different...

3 månader ago | 1 answer | 0

1

answer

Question

Take 3x3 nearest neighbours round centroids of all spots and find the median of their mean
Hello, I have an image (TIFF) that I calculate the centroids and extract the median intensity of all these centroids. I have th...

3 månader ago | 3 answers | 0

3

answers

Question

Zoom of image on UIAxes seems to have one axis bound
Hello, I have a highly rectangular image displayed on a uiaxes in AppDesigner I want to Zoom into say the middle region, and...

4 månader ago | 1 answer | 0

1

answer

Question

Comparing strings with extra zero
Hello, I am wanting to perform a safety check that 2 strings are the same: send: 297.043 rec: 297.043 send: 298.030 ...

5 månader ago | 1 answer | 0

1

answer

Answered
Constructing a string with several index requirements
Could i ask how I would make the double for loop work using idexing: I start with this: jx=1:4; ix=0:3 tx = "ScanArray(0)...

5 månader ago | 0

Question

Constructing a string with several index requirements
Hello, I have a vector of numbers r2 that I need to send over a communciation to an array (called ScanArray). The comms is such ...

6 månader ago | 4 answers | 0

4

answers

Question

Changing colour of plot every time X data changes direction
Hello, I have a set of data (50k lines) representing a raster scan so there are several occurrances of the position zero (=X in...

6 månader ago | 2 answers | 0

2

answers

Question

Finding max value of 1D vector when all values could be negative
Hello, I have a set of numbers and want to identify the largest difference between adjacent values. I have used the diff funct...

6 månader ago | 1 answer | 0

1

answer

Question

Find index of rows in tables with two conditions doesn't work using &&
Hello, I am using a readtable to read a CVS file into a uitable. I like the fact that you can operate on columns using the dot...

6 månader ago | 1 answer | 0

1

answer