源樹上林

Last seen: 29 dagar ago | Active since 2020

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三次元データのプロット、および表面の作製方法
座標データと言うことですが、説明を聞く限り各変数は格子状に並んでいるようなのでそのままイメージ図の通りsurfで法線方向座標をプロットすれば形状確認はできそうに思えます。とそう思ってCSVのデータプロットしてみたらそうでもなかった。XY方向にも動きがあ...

mer än 3 år ago | 0

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Multiply two terms at a set distance apart from each other in an array
array = 1:950; for i = 1:950 disp([ 'i = ' num2str(i) ' : array(' num2str( i+23 ) ')*array(' num2str( i ) ')' ]) var ...

nästan 4 år ago | 0

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Is the Point in a Triangle?
Check whether a point or multiple points is/are in a triangle with three corners Points = [x, y]; Triangle = [x1, y1; x...

nästan 4 år ago

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ラベル付けされたtableをカウントする方法について
　解決されたようで何よりです。　すみません、まだこの掲示板の使い方になれていないもので。選べないのはおそらく僕の書き込みがコメントだからです。回答の方に再投稿しておきます。 % ゼロ以外のインデックス i = not( cellfun( @(x) ...

ungefär 4 år ago | 0

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中心を軸とした配列の入れ替え
　マニュアルを見ると circshift の2つ目の引数は整数と書いてあります。エラーメッセージに書いてあるとおりです。ceilとかfloorで整数にしたところで希望する結果は得られません。　関数1個で解決するに越したことはないのですが、最適なものを見...

ungefär 4 år ago | 0

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power_fuel_cellで負荷側の条件を時間変化させる方法
　どういうデータ構造なのかがわからないのでとても答えづらいですが、仮にこんな構造だったらこうするというやり方で回答しておきます。 data = [ (1:300)', rand( 300, 2 ) ]; time = data( :, 1 ); ...

ungefär 4 år ago | 0

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for文の書き方
一見簡単な質問のように見えるけど、簡単すぎて本当は難しい問題なんじゃないだろうかと悩みました。とりあえず深く考えずに回答してみます。 N = 10;　% ファイルの個数 for i = 1:N fname = [ 'img' sprint...

ungefär 4 år ago | 0

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Right Triangle Side Lengths (Inspired by Project Euler Problem 39)
If _p_ is the perimeter of a right angle triangle with integral length sides, { _a_, _b_, _c_ }, there are exactly three solutio...

ungefär 4 år ago

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frame of the matrix
Given the matrix M, return M without the external frame.

ungefär 4 år ago

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subtract central cross
Given an n-by-n square matrix, where n is an odd number, return the matrix without the central row and the central column.

ungefär 4 år ago

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Calculate the centroid of a triangle
Info: https://en.wikipedia.org/wiki/Centroid Example Input: x = [0 0 1]; % x-coordinate y = [0 1 0]; % y-coordinat...

mer än 4 år ago

Solved

Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

mer än 4 år ago

Solved

Find the maximum number of decimal places in a set of numbers
Given a vector or matrix of values, calculate the maximum number of decimal places within the input. Trailing zeros do not coun...

mer än 4 år ago

Solved

Make roundn function
Make roundn function using round. x=0.55555 y=function(x,1) y=1 y=function(x,2) y=0.6 y=function(x,3) ...

mer än 4 år ago

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Rounding off numbers to n decimals
Inspired by a mistake in one of the problems I created, I created this problem where you have to round off a floating point numb...

mer än 4 år ago

Solved

Matlab Basics - Rounding III
Write a script to round a large number to the nearest 10,000 e.g. x = 12,358,466,243 --> y = 12,358,470,000

mer än 4 år ago

Solved

Matlab Basics - Rounding II
Write a script to round a variable x to 3 decimal places: e.g. x = 2.3456 --> y = 2.346

mer än 4 år ago

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Check that number is whole number
Check that number is whole number Say x=15, then answer is 1. x=15.2 , then answer is 0. <http://en.wikipedia.org/wiki/Whole...

mer än 4 år ago

Solved

MATLAB Basic: rounding IV
Do rounding towards plus infinity. Example: -8.8, answer -8 +8.1 answer 9 +8.50 answer 9

mer än 4 år ago

Solved

MATLAB Basic: rounding III
Do rounding towards minus infinity. Example: -8.8, answer -9 +8.1 answer 8 +8.50 answer 8

mer än 4 år ago

Solved

MATLAB Basic: rounding II
Do rounding nearest integer. Example: -8.8, answer -9 +8.1 answer 8 +8.50 answer 9

mer än 4 år ago

Solved

MATLAB Basic: rounding
Do rounding near to zero Example: -8.8, answer -8 +8.1 answer 8

mer än 4 år ago

Answered
計測器で計測した不規則な変化のデータで、FFT解析を行う方法
時間変化が不均一なのが一番の問題なんだと思います。あとは大丈夫ですよね。リサンプリングについて調べてみてください。

mer än 4 år ago | 0

Solved

Find my daddy long leg (No 's')
Given the ratio of the two legs (longer / shorter), and the hypotenuse length, find the value of the bigger leg.

mer än 4 år ago

Answered
行列の範囲指定をして総和を算出する方法を知りたいです。
多分これで。 sum(A(200:400,:))

mer än 4 år ago | 0

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Natural numbers in string form
Create a cell array of strings containing the first n natural numbers. _Slightly_ harder than it seems like it should be. Ex...

mer än 4 år ago

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Fix the last element of a cell array
Note: this is lifted directly from <http://www.mathworks.com/matlabcentral/answers/82825-puzzler-for-a-monday Puzzler for a Mond...

mer än 4 år ago

Solved

String Array Basics, Part 1: Convert Cell Array to String Array; No Missing Values
<http://www.mathworks.com/help/matlab/characters-and-strings.html String array> and cell array are two types of containers for s...

mer än 4 år ago

Solved

Cell Counting: How Many Draws?
You are given a cell array containing information about a number of soccer games. Each cell contains one of the following: * ...

mer än 4 år ago

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Remove element(s) from cell array
You can easily remove an element (or a column in any dimension) from a normal matrix, but assigning that value (or range) empty....

mer än 4 år ago

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源樹上林