Answered

retime only for specific gaps on time

How about the following solution? % Sample timetable with 2 gaps (e.g >1 hour) Time = datetime('now') + minutes(cumsum(45*rand...

retime only for specific gaps on time

How about the following solution? % Sample timetable with 2 gaps (e.g >1 hour) Time = datetime('now') + minutes(cumsum(45*rand...

5 days ago | 2

| accepted

Answered

How to assign points to multiple polygons using inpolygon

Looking at your data, one of the Points is outside of the convex hull of polygon A's coordinates. So "inpolygon" function will n...

How to assign points to multiple polygons using inpolygon

Looking at your data, one of the Points is outside of the convex hull of polygon A's coordinates. So "inpolygon" function will n...

15 days ago | 0

Answered

三角形膜要素の分布図(任意の（x,y)座標で）を作成したいのですが、方法はありませんでしょうか。

ご説明ありがとうございます。おおよそ理解しました。 まず、任意の (x,y) 座標に対して何らかの値 z （例えば関数 z = f(x,y) の出力値）があったとして、それらの隣接する点どうしを三角形で結んで3次元曲面として表示するには、以下のようにす...

三角形膜要素の分布図(任意の（x,y)座標で）を作成したいのですが、方法はありませんでしょうか。

ご説明ありがとうございます。おおよそ理解しました。 まず、任意の (x,y) 座標に対して何らかの値 z （例えば関数 z = f(x,y) の出力値）があったとして、それらの隣接する点どうしを三角形で結んで3次元曲面として表示するには、以下のようにす...

18 days ago | 1

| accepted

Answered

How can I convert multiple images (all the same size) into one matrix?

To create image dataset for training a neural network, imageDatastore should be an easy and promissing way. So I would recommend...

How can I convert multiple images (all the same size) into one matrix?

To create image dataset for training a neural network, imageDatastore should be an easy and promissing way. So I would recommend...

19 days ago | 0

Answered

How to stretch matrix

Not so sophisticated, but intuitively clear way: y = repelem(x,2); y(2:2:end) = y(2:2:end)+1;

How to stretch matrix

Not so sophisticated, but intuitively clear way: y = repelem(x,2); y(2:2:end) = y(2:2:end)+1;

19 days ago | 1

Answered

Trouble importing similar .txt files using readtable (error: all lines must have the same number of delimiters)

I think the following way would be more stable. % Read data fid = fopen('Error.txt','r'); str = textscan(fid,'%s','Delimiter'...

Trouble importing similar .txt files using readtable (error: all lines must have the same number of delimiters)

I think the following way would be more stable. % Read data fid = fopen('Error.txt','r'); str = textscan(fid,'%s','Delimiter'...

20 days ago | 1

| accepted

Answered

How to detect change in mean value of a signal

It may need to apply "smoothing" before detecting changes larger than 10,000. Looking at your data, ~2000 points movmean will cl...

How to detect change in mean value of a signal

It may need to apply "smoothing" before detecting changes larger than 10,000. Looking at your data, ~2000 points movmean will cl...

20 days ago | 0

| accepted

Answered

Checking if word/words are present in a sentence in a table cell.

Like this? % A sample data T = cell2table({... 'M3 TRIPPED xyz','abc','pqr';... 'def','M3 TRIPPED 123','ghi'}); % Fin...

Checking if word/words are present in a sentence in a table cell.

Like this? % A sample data T = cell2table({... 'M3 TRIPPED xyz','abc','pqr';... 'def','M3 TRIPPED 123','ghi'}); % Fin...

20 days ago | 1

Answered

Looking for the ways to categorize the black dots by the number of pixels...

I strongly believe the regionprops function will be your help. The following is an example: % Read image and binarize I = imre...

Looking for the ways to categorize the black dots by the number of pixels...

I strongly believe the regionprops function will be your help. The following is an example: % Read image and binarize I = imre...

20 days ago | 0

| accepted

Answered

積み上げグラフのcolormapについて

たとえば以下のような方法ではいかがでしょうか？ % Sample data and color map y = rand(3,10); color = colorcube(size(y,2)); % Visualize the data fi...

積み上げグラフのcolormapについて

たとえば以下のような方法ではいかがでしょうか？ % Sample data and color map y = rand(3,10); color = colorcube(size(y,2)); % Visualize the data fi...

22 days ago | 1

| accepted

Answered

reverse 3D euclidean distance

There should be 2 answers. Here is my try. P = [3 1 4;12 1 4; 34 2 4]; D = [81 36 601]; func = @(x) (vecnorm(x - P(1,:))-s...

reverse 3D euclidean distance

There should be 2 answers. Here is my try. P = [3 1 4;12 1 4; 34 2 4]; D = [81 36 601]; func = @(x) (vecnorm(x - P(1,:))-s...

26 days ago | 1

Answered

エラーバーグラフの凡例のマーカーからエラーバーを抜く方法

エラーバーチャートの上に空のグラフ（エラーバー無し）を上書きして、そのグラフに対して凡例を指定する、というのはいかがでしょうか？ 以下はその一例です。 % Sample data x = 1:10:100; y = 100*rand(1,10); ...

エラーバーグラフの凡例のマーカーからエラーバーを抜く方法

エラーバーチャートの上に空のグラフ（エラーバー無し）を上書きして、そのグラフに対して凡例を指定する、というのはいかがでしょうか？ 以下はその一例です。 % Sample data x = 1:10:100; y = 100*rand(1,10); ...

26 days ago | 2

| accepted

Answered

How to repeatedly subdive vector rectangle into equal area?

How about using histogram2 function? The following is an example. % make dummy data x = 10*rand(30,1); y = 25*rand(30,1); ...

How to repeatedly subdive vector rectangle into equal area?

How about using histogram2 function? The following is an example. % make dummy data x = 10*rand(30,1); y = 25*rand(30,1); ...

27 days ago | 0

| accepted

Answered

How do you calculate a trajectory through a series of 3D points using cubic splines?

One possible straight-forward way would be like this: Actually, spline interpolation seems to be better than cubic spline... B...

How do you calculate a trajectory through a series of 3D points using cubic splines?

One possible straight-forward way would be like this: Actually, spline interpolation seems to be better than cubic spline... B...

27 days ago | 1

Answered

How can I find RGB values of a matrix of coordinates of an image?

Another possible solution: row = round(centers(:, 1)); col = round(centers(:, 2)); R = arrayfun(@(x,y) P(x,y,1),row,col); ...

How can I find RGB values of a matrix of coordinates of an image?

Another possible solution: row = round(centers(:, 1)); col = round(centers(:, 2)); R = arrayfun(@(x,y) P(x,y,1),row,col); ...

28 days ago | 0

Answered

How can I change the retime function in order to do a median(A,'omitnan')?

How about the following? retime(Liv_dom_an, 'monthly', @(x) median(x,'omitnan'))

How can I change the retime function in order to do a median(A,'omitnan')?

How about the following? retime(Liv_dom_an, 'monthly', @(x) median(x,'omitnan'))

1 month ago | 0

| accepted

Answered

Surface area calculation for irregular shape

How about the following? %% Example in the following page % https://jp.mathworks.com/help/matlab/visualize/visualizing-volume-...

Surface area calculation for irregular shape

How about the following? %% Example in the following page % https://jp.mathworks.com/help/matlab/visualize/visualizing-volume-...

1 month ago | 0

Answered

Eye Diagram from text file values

The following is one simple example. I hope this would be some help for your research! % Load PRBS pattern D = dlmread('PRBS_...

Eye Diagram from text file values

The following is one simple example. I hope this would be some help for your research! % Load PRBS pattern D = dlmread('PRBS_...

1 month ago | 0

Answered

How to cluster a network?

How about applying biconncomp function? The following is an example: % Sample Graph s = [1 1 2 2 3 4 4 5 6 6 7 7 8]; t = [2 ...

How to cluster a network?

How about applying biconncomp function? The following is an example: % Sample Graph s = [1 1 2 2 3 4 4 5 6 6 7 7 8]; t = [2 ...

1 month ago | 0

Answered

Binary String Generator With Minimum Distance

How about using BCH code ? Theoretically, BCH(n,k) encoded binary sequences has minimun distance of bchnumerr(n,k)*2+1. So if ...

Binary String Generator With Minimum Distance

How about using BCH code ? Theoretically, BCH(n,k) encoded binary sequences has minimun distance of bchnumerr(n,k)*2+1. So if ...

1 month ago | 2

| accepted

Answered

How to prevent envelope crossing through function.

That is due to a characteristics of interpolation method (Spline) used in the envelope function. How about detecting peaks and i...

How to prevent envelope crossing through function.

That is due to a characteristics of interpolation method (Spline) used in the envelope function. How about detecting peaks and i...

1 month ago | 2

| accepted

Answered

How to plot intensity profile of an image

Hi Warid-san, You can do it by the same way, like the following. I = imread('Capture.PNG'); % Since size(I,2)/2 = 215.5, I ...

How to plot intensity profile of an image

Hi Warid-san, You can do it by the same way, like the following. I = imread('Capture.PNG'); % Since size(I,2)/2 = 215.5, I ...

1 month ago | 0

Answered

Sorting matrix based on the sum of the rows

Like this? % Read data from CSV A = csvread('Counts.csv'); % Calculate order vector (pt) based on sum(A,2) [~,pt] = sort(s...

Sorting matrix based on the sum of the rows

Like this? % Read data from CSV A = csvread('Counts.csv'); % Calculate order vector (pt) based on sum(A,2) [~,pt] = sort(s...

1 month ago | 1

| accepted

Answered

How do I extract particular column from unformatted text in .txt file

As mentioned by many experts, it's better to save as .csv format by wireshark. But if you have to do this task from the text fil...

How do I extract particular column from unformatted text in .txt file

As mentioned by many experts, it's better to save as .csv format by wireshark. But if you have to do this task from the text fil...

1 month ago | 0

| accepted

Answered

regexp: Extract optional named tokens

How about extracting 'Name', 'Gender' and 'ID' one-by-one? The following is an example. % Read the file str = fileread('trip-...

regexp: Extract optional named tokens

How about extracting 'Name', 'Gender' and 'ID' one-by-one? The following is an example. % Read the file str = fileread('trip-...

2 months ago | 0

Answered

3D Surface or Multiple Line Plots from 16 iterations of 3 column XYZ Data

Like this? data = dlmread('3DDCRXYZ.txt'); g = findgroups(data(:,3)); figure hold on for kk = 1:max(g) idx = g == kk; ...

3D Surface or Multiple Line Plots from 16 iterations of 3 column XYZ Data

Like this? data = dlmread('3DDCRXYZ.txt'); g = findgroups(data(:,3)); figure hold on for kk = 1:max(g) idx = g == kk; ...

2 months ago | 1

| accepted

Answered

I cannot get the output, Image processing

I think several points should be checked: File path in the line 1 is correct? 3rd input argument of imnoise function should b...

I cannot get the output, Image processing

I think several points should be checked: File path in the line 1 is correct? 3rd input argument of imnoise function should b...

2 months ago | 0

Answered

How to remove triangles from an image?

How about the following? % Read the original image I = imread('image.jpg'); % Extract orange part (using Color Thresholder ...

How to remove triangles from an image?

How about the following? % Read the original image I = imread('image.jpg'); % Extract orange part (using Color Thresholder ...

2 months ago | 0

Answered

Convert distance matrix to a table

Or, if you want the full list of (from, to, distance) set, how about the following? rng('default') % For reproducibility X = r...

Convert distance matrix to a table

Or, if you want the full list of (from, to, distance) set, how about the following? rng('default') % For reproducibility X = r...

2 months ago | 0

Answered

creating a cell with serial names

How about the following? suffix = repmat({'AB_'},15,1); number = cellstr(num2str((1:15)','%02d')); output = strcat(suffix,n...

creating a cell with serial names

How about the following? suffix = repmat({'AB_'},15,1); number = cellstr(num2str((1:15)','%02d')); output = strcat(suffix,n...

2 months ago | 0

| accepted