在我的字符串数组中，我有一些值，比如"8.1076e-05"；。做空时遇到的问题。我使用代码FinalHierarchy = sortrows(B, 3, 'descend');来进行缩写，结果如下。
"FC624 " "0.010686" "9.5329e-05"
"FC642 " "0.0044959" "8.2636e-05"
"FC621 " "0.0090886" "8.1076e-05"
"FC622 " "0.0086253" "7.6943e-05"
"FC623 " "0.0080882" "7.2152e-05"
"FC643 " "0.0028437" "5.2267e-05"
"FC646 " "0.0025469" "4.6813e-05"
"FC644 " "0.0012072" "2.2189e-05"
"FC122 " "0.0073847" "0.00077775"
"FC142 " "0.010012" "0.00072479"
"FC131 " "0.0094101" "0.00071951"
"FC121 " "0.0068294" "0.00071926"
"FC521 " "0.0095355" "0.00069401"
"FC112 " "0.0087711" "0.00063404"
"FC111 " "0.008607" "0.00062218"
"FC531 " "0.0058125" "0.00055105"
"FC141 " "0.0074634" "0.0005403"
"FC228 " "0.0098074" "0.00049734"
"FC224" "0.009434" "0.0004784"
"FC221 " "0.0092251" "0.00046782"
"FC225" "0.0088874" "0.00045069"
从上面可以看出，MATLAB已经考虑了值2.2189e-05大于0.00077775。我想背后的原因是，MATLAB比较了2.2189和0.00077775。这是因为列是一个字符串。在我的计算中，column 2和column 3是双的，但当我将它们与字符串column 1连接为'B'时，它就变成了字符串。我想如果2.2189e-05保持为0.00002219，可能会有一个非常简单的解决方案。我尝试将format更改为longG，但问题仍然存在。有人能提出解决这个问题的办法吗？
正如您所说，这是因为您的元素是字符串。所以你可以做的是：
% Sort the column after having casted it to double
[~, idx] = sort(str2double(B(:, 3)), 'descend');
% Apply the sorting to the initial matrix
FinalHierarchy = B(idx, :);