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MATLAB Answers

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질문


Using Summary on a table to access just the last 2 column stats
Hello, I have an array of numbers that I want to apply the "summary" feature associated with tables to. This is because I want t...

3일 전 | 답변 수: 3 | 0

3

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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...

8일 전 | 답변 수: 1 | 0

1

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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)); ...

11일 전 | 0

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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...

11일 전 | 답변 수: 2 | 0

2

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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...

22일 전 | 답변 수: 3 | 0

3

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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...

대략 1개월 전 | 답변 수: 1 | 0

1

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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...

대략 2개월 전 | 0

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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...

대략 2개월 전 | 답변 수: 5 | 0

5

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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(...

대략 2개월 전 | 0

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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...

대략 2개월 전 | 답변 수: 1 | 0

1

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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...

대략 2개월 전 | 답변 수: 2 | 0

2

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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...

대략 2개월 전 | 답변 수: 1 | 0

1

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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 ...

2개월 전 | 답변 수: 2 | 0

2

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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....

2개월 전 | 답변 수: 1 | 0

1

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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...

2개월 전 | 답변 수: 1 | 0

1

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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...

3개월 전 | 답변 수: 1 | 0

1

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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...

3개월 전 | 답변 수: 2 | 0

2

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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...

3개월 전 | 답변 수: 1 | 0

1

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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...

3개월 전 | 답변 수: 1 | 0

1

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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...

3개월 전 | 답변 수: 1 | 0

1

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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...

3개월 전 | 답변 수: 1 | 0

1

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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; ...

3개월 전 | 0

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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...

3개월 전 | 답변 수: 1 | 0

1

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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...

3개월 전 | 답변 수: 3 | 0

3

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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...

4개월 전 | 답변 수: 1 | 0

1

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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 ...

6개월 전 | 답변 수: 1 | 0

1

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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)...

6개월 전 | 0

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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 ...

6개월 전 | 답변 수: 4 | 0

4

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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...

6개월 전 | 답변 수: 2 | 0

2

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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...

6개월 전 | 답변 수: 1 | 0

1

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