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Akira Agata


MathWorks

445 total contributions since 2016

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Answered
How to label all the edges in a graph the euclidean distance between two adjacent nodes???
I think one possible solution would be like this: % Make Graph object rng('default'); s = [1 1 3]; t = [2 3 4]; G = graph(s...

19 hours ago | 0

Answered
Vector to Circle in Matrix
If you have Image Processing Toolbox, one solution would be like this: A = zeros(50); A(25,25) = 1; D = bwdist(A); idx = D <...

4 days ago | 0

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Answered
how to reject whole columns based on a condition
No need to use for-loop. Please try the following: A = [5 10 18 13; -2 8 -9 10; 40 47 85 -...

4 days ago | 0

Answered
how can I read in this file of varying data types
Another possible solution: fid = fopen('earthquake_data.txt','r'); s = textscan(fid,'%s','Delimiter','\n'); s = s{1}; fclose...

5 days ago | 0

Answered
Scatter plot with extra features
How about using quiver function? Here is an example. data = [ % Temp Pres Azim 41 78 45 66 44 0 170 ...

5 days ago | 0

Answered
regexprep() skip first occurrence
How about using regexp to find the position of spaces, and delete 2nd~Nth spaces? Like: mystring = 'this is my string'; pos = ...

6 days ago | 0

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Answered
How to read only numerical data from irregular .csv file
Since your csv file was saved as a 16-bit text, it's a little bit difficult to use textscan to read data correctly. I think ano...

6 days ago | 0

Answered
Help with making a function.
Like this? (Please save the following code as squareRootCheck.m) function y = squareRootCheck(x) if mod(sqrt(x),1) == 0 y =...

7 days ago | 0

Answered
symmetric color map using surf
Like this? cmap = interp1([-1;0;1],[1 0 0;0 1 0;1 0 0],linspace(-1,1)'); surf(peaks) colormap(cmap) colorbar

12 days ago | 1

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Answered
Creating a matrix from a lagrer matrix
How about the following? In this case, C{1}, C{2}, ..., C{151} are 200-by-1 matrices each, extracted from original 30194-by-1 m...

12 days ago | 1

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Answered
write data to header file
How abou the following? % Sample data data = rand(1,800); % Arrange it to comma-separated string str = num2str(data); str...

14 days ago | 1

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Answered
How to convert 3d monthly data into season
How about the following? % Sample data Data = rand(56,42,360); % Reshape the data so that each row shows monthly data (42*5...

15 days ago | 1

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Answered
Sum quarterly rows into annual results of revenue
How about the following? % Create data table with same structure of yours Date = repelem(datetime(2017,3,1)+3*calmonths(0:3),1...

18 days ago | 0

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Mahalanobis distance matrix of an excel dataset
Like this? % Read data from Excel file Data = xlsread('yourExcelFile.xlsx'); % Calculate pair-wise mahalanobis distance D ...

20 days ago | 0

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Answered
Trouble using sscanf to find numbers in a string?
Thank you for uploading your data file! How about the following? % Read data file fid = fopen('TemperatureRecord.txt','r'); ...

27 days ago | 0

Answered
How to find shortest distance in 3D?
You can use shortestpath function to find the shortest path between selected nodes. I believe the solution would be looks like t...

27 days ago | 0

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Answered
How to save images as jpgs from .mat files struct
To save matrix as an image, please use imwrite function. In addition, if you save your data as an image file, I would recommend...

27 days ago | 0

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Answered
Creating a table with repeating values
If the size of your variable m_female{1,1}(:,1) is 101-by-1, the following should work. Table_m_xt = table(... ones(101,1),r...

27 days ago | 0

Answered
Load all fields of a struct as input into a function
If your structure Input always has fields Var1 and Var2, a simple solution would be like this. function Var3 = TestFunction(In...

27 days ago | 0

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Answered
How to interpolate in 3d?
You can use scatteredInterpolant to do this task. The following is an example. % Read data file Data = xlsread('Mappe2.xlsx') ...

28 days ago | 1

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Answered
Interpolate positions between 2 matrix
How about the following? % First point position in the matrix M1 = [0 0 0 1 0 0 0; 0 0 0 0 0 0 0; 0 0 0 0 0 0 0; 0 0 0 0 0...

28 days ago | 0

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Answered
I have matrix F (x,y coordinates), which is 1000*2 matrix. i calculated distances between coordinates using PDIST2 command. i want coordinates which are at distance greater than 22?
One possible solution would be like this: F = [x5;y5]'; % x,y coordinates D = pdist(F); % pdist function is suitable in this c...

1 month ago | 0

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Answered
second order data fitting using least squares
Another possible solution: x = [0.81 0.85 0.91 1.00 1.17 1.33 1.36 1.37 1.39 1.40 1.42]'; y = [0.58 0.69 0.81 0.93 1 0.91 0.84...

2 months ago | 0

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How to match Y with X?
How about the following? Running this code, the table T becomes the same as in your desired_output.xlsx. X = readtable('X .xlsx...

2 months ago | 1

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Answered
how to calculate the standard deviation for each month in monthly time series data of 46 years?
If your goal is to calculate the standard deviation for each month, you don't need to reshape the data to 46X12. The following ...

2 months ago | 0

Answered
how to convert to a cell array from a single precision array
Hi Saugata-san, Thank you for providing more details. I believe the following will do the task you explained. a = [1.1 1.2; ...

2 months ago | 0

Answered
Having trouble rotating rectangle shape
Input argument of rotate function shall be a surface, patch, line, text, or image object. How about the following? figure axis...

2 months ago | 0

Answered
How to find points inside a country border
How abou the following? (In this script, I have used shape file provided in http://thematicmapping.org/downloads/world_borders....

2 months ago | 1

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Answered
intersect two datetime vectors
The following can find identical timestamp with 0.1 sec tolerance. % Load data load('example1.mat'); % Find identical times...

2 months ago | 1

Answered
How can I replace data in a specific address in a text file with new modified data?
Looking at your uploaded data file, I think one possible solution would be like this. % Read all lines in text file fid = fope...

2 months ago | 0

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