这是MATLAB绘图比较常用的一种做法。把符合某个条件的值设为NaN，绘图时这些点就不会绘制，这样可以隐藏不合需要的那部分点。就这个例子来说，是把满足z<0这个条件的点都换成NaN，也就是说，只绘制曲面的z>=0那部分（也可以把这句换成z(z<0)=NaN;效果完全相同）。比较一下，如果没有这句：加...
这是说明没有寻找到满足你所设定的条件的点，所以用empty matrix表示
建立一个字符串向量,删除其中的大写字母.提示:利用find函数和空矩阵.要求:有matlab进行回答 matlab中求两个矩阵之间距离的函数dist_matrix在数学上是如何实现的,也就是说两个矩阵之间的距离怎么求? 特别推荐 热点考点 2022年高考真题试卷汇总 2022年高中期中试卷汇总 2022年高中期末试卷汇总 2022年高中月考试卷汇总...
Open in MATLAB Online One way: ThemeCopy X = ones(10,4); X(3,4) = NaN; indices = find(isnan(X) == 1); [I,J] = ind2sub(size(X),indices); 0 Comments Sign in to comment. bym on 12 Oct 2011 Vote 0 Link Open in MATLAB Online ThemeCopy isnan() 1 Comment NS on...
Open in MATLAB Online here is an example which can give you idea how you can do it: ThemeCopy a = rand(1152, 4); a(randi(1152, 1, 20), :) = NaN; a = num2cell(a); b = cellfun(@isnan, a); idx = find(b(:,1)); for i = 2:size(a, 2) idx = union(...
% Read in data from Excel workbook. [numbers, strings, raw] = xlsread('combined_data.xlsx') % Get first data set. Eliminate nan values. x = numbers(:, 1); x(isnan(x)) = []; y = numbers(:, 2); y(isnan(y)) = []; numPoints...
MATLAB Online에서 열기 There is no built-in command for that. function[mins, idxes] = minpositive(Array, varargin) Array(Array<=0) = nan; [mins, idxes] = min(Array, varargin{:}); 댓글 수: 0 댓글을 달려면 로그인하십시오. ...
q— Displacement values NaN (default) | vector Displacement values for computing the operating point, specified as a vector of length equal to the number of degrees of freedom in the mechss model sys. The algorithm uses the specified numeric values as known values. To set entries as unspecifie...
MATLAB Online에서 열기 Below are my codes. The LLF function has two unknowns, PD and rho, I make them into x variable that has x(1) and x(2) in the function. I tried to use fminsearch(-LLF) to find the argmax but it did not work. I used the fzero instead, but it...
If each of them is too large, then break them down in turn, until the large problem is no longer large. Learn to use the tools in MATLAB. Eat a programming elephant one byte at a time. 0 Comments Sign in to comment.Sign in to answer this question....