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Akira Agata

MathWorks

Last seen: 1 dag ago Active since 2016

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Answered
Is there an alternative to eval in a struct?
I believe it's better to arrange the data as a table rather than the deeply nested structure. How about the following? subject ...

ongeveer 6 uur ago | 0

Answered
Need help asking for an input sentence
To input a text, you should use 's' option, like: N = input('what is N?: ') A = input('give me a sentence!: ','s');

ongeveer 7 uur ago | 0

Answered
MATLABのウィンドウの長さとは、何を意味しているのでしょうか。
以下の説明が参考になるかと思います。 https://jp.mathworks.com/help/reinforcement-learning/ref/rltrainingoptions.html#mw_9b790efc-2a22-481b-a5f9-1...

ongeveer 7 uur ago | 0

| accepted

Answered
Storage results in an array
Instead of uisng for-loop, you can do this task by vectorizing, like: x = [2, 3, 4, 5, 6]; y = x + 2; idx = x > 4; y(idx) = ...

1 dag ago | 0

Answered
3次元から2次元に形状変換
下記の方法ではいかがでしょうか? % 変数 A はサイズが 3×3×100 の3次元配列と想定 A = reshape(permute(A, [2 1 3]), 1, [], 100); A = squeeze(A)'; 例: % 簡単のため 3...

1 dag ago | 0

Answered
乱数について
以下のような方法はどうでしょうか? >・乱数を使用して作る >・乱数を使用して0.5以上は1、0.5未満は0といったようにしたい。 この部分は、結局のところ行列の各要素が 1/2 の確率で 0 か 1 となるため、randi 関数を使用しまし...

2 dagen ago | 0

Answered
How can I write a csv file by row or by column
How about the following? % Sample data (1-by-3 cell array) output = {... uint8(randi([0 255],100,1)),... uint8(randi([0 ...

12 dagen ago | 0

Answered
非表示にしたfigureが複数ある場合において,編集対象の「現在のfigure」を非表示のまま変更したい
figure を作成する際にあらかじめ figure ハンドルを取得しておくことで、gcf を使わなくてもそれぞれの figure を操作可能です。例えば、以下のようにすれば 2 つの figure に対するハンドル hFig1, hFig2 を取得できま...

12 dagen ago | 1

| accepted

Answered
Excluding types of extension files on a loop
You can do that more effective way by using wild card character "*", like: imgFolder = pwd; % <- set to your image folder path ...

17 dagen ago | 2

Answered
Tableからデータを抽出する方法
下記のような方法はいかがでしょうか? % データ読み込み T = readtable('Book2.xlsx'); % xのdiffを取る (xが一定の区間は0となる) d = [0; diff(T.x)]; % xが増加している部分 (...

18 dagen ago | 0

Answered
how to generate and cover all the possible arrays using two enties
Another possible solution: [p,q,w,s] = ndgrid({'H','C'}); A = [p(:),q(:),w(:),s(:)]; disp(A)

21 dagen ago | 0

Answered
イメージの行列の計算について
小数点以下が切り捨てられてしまうのは、読み込んだ画像が uint8 型の配列としてワークスペースに取り込まれるためです。いったん double 型の配列に変換したうえで 255 で割る、ということもできますが、0~1 の範囲にスケーリングしたいということで...

22 dagen ago | 2

| accepted

Answered
how to convert bmp image to Bpg
Unfortunately, currently BPG image format is not supported. As a workaround, how about installing bpgenc from the following sit...

24 dagen ago | 0

Answered
散布図上で円のフィッティング
いろいろな解決法があるかと思いますが、fminsearch を使って円をあらわす式の係数を推定するのはいかがでしょうか? 以下はその一例です。 x = [x1,x2,x3,x4,x5,x6,x7,x8,x9,x10,x11,x12]; y = [y1...

24 dagen ago | 1

| accepted

Answered
Bit Error Rate (BER) performance of different digital modulation schemes such as Binary Phase Shift Keying (BPSK),
I believe the following documentation page would be help: https://jp.mathworks.com/help/comm/ref/berawgn.html

25 dagen ago | 0

Answered
Add missing numbers of 0's and 1's in an array
How about the following? % Sample data x = [0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0]; % Calculate run...

26 dagen ago | 0

Answered
Read csv-style file with header and subtitle
How about the following solution? T = string(readcell('tableExample.csv'));

28 dagen ago | 0

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Channel


Data

ongeveer een maand ago

Answered
What methods can be used for lossless audio compression?
I believe the most simplest way to save data as a lossless audio file using MATLAB is audiowrite. This function can save data a...

ongeveer een maand ago | 1

Answered
get the distances between points
How about the following solution? load('xy_coordinate.mat'); % Calculate distance between each node D = pdist(xy); % Con...

ongeveer een maand ago | 2

| accepted

Answered
How to export array elements?
How about the following? A = (1:20)'; N = numel(A); idx = mod(0:N-1,10)' <= 1; X = cell(5,1); for kk = 1:5 X{kk} = A...

ongeveer 2 maanden ago | 0

| accepted

Answered
char array to pick
The solution should be: b = a(:,2:3);

3 maanden ago | 0

| accepted

Answered
Help with findgroups command
Like this? a = {... 'apples' 1 2;... 'orange' 2 3;... 'apples' 3 4;... 'Pear' 4 5;... 'apples' 5 6;}; % Ext...

3 maanden ago | 0

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Answered
List of Node pairs
Another possible solution: numNode = 4; [r,c] = find(~eye(numNode)); v = [c,r]; >> v v = 1 2 1 3 ...

3 maanden ago | 1

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Answered
cell配列内の特定の行を取り出し,それらの行を一つのcell配列にまとめることはできますか?
対象の cell 配列を C1 とすると、以下のようにして抽出可能です。 idx = cellfun(@(x) x == 4, C1(:,3)); C2 = C1(idx,:);

3 maanden ago | 0

| accepted

Answered
テーブルと構造体の結合
変数 B が数値配列ということでしたら、array2table で table 型に変換できます。 T = [A, array2table(B)];

3 maanden ago | 1

Answered
Trying to set Y-Axis to Minutes:Seconds for swim times. Would like to set range from 0 to 3:30 and eliminate leading zeros
How about the following solution? % Sample data t = 0.25+3*rand(100,1); % Create boxplot figure boxplot(t) d = 0:0.5:3.5...

3 maanden ago | 0

Answered
plotting bar graph using matlab
How about using a stem plot? The following is an example: tt = readtimetable('data.txt'); figure stem(tt.Time, tt.Var1,'Ma...

4 maanden ago | 1

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Answered
How to find local peaks in a 3D plane
How about the following? % Load data load('positionsplane.mat'); % Arrange it as a table variable tData = array2table(posi...

4 maanden ago | 0

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Answered
Linear Interpolation hard task
As @Walter Roberson -san suggested, timetable and retime is the best solution. Please try the following: TT = readtimetable('_s...

4 maanden ago | 0

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