在Matlab中读取.txt文件中的列

Question

我正在试着从一个表中找出最小值。如何从.txt文件中的多个列中查找最小值

TheTable = importdata('myfile.txt')
TheYear = TheTable(:,1);
ColumnsWithValues = TheTable(2:13);
MininumValue = min(TheTable(Year > 2010 & Year < 1920)) ' This is only reading the first column

.txt文件如下所示：

2009  -2  -3  3  5  7  8  10   9   7  4  3  5
2010  -1  -4  3  5  7  6   6   9  11  5  5  4
2011
...
...
2020
2021                                     ....
2022                                     .... 

Answer 1

添加列索引器2:end以获取年份之后的列。对于示例数据，如果我们使用TheYear > 1920 & TheYear < 2011，则输出如下：

MinimumValue = min(TheTable(TheYear > 1920 & TheYear < 2011, 2:end))

% MinimumValue =
%
%    -2    -4     3     5     7     6     6     9     7     4     3     4

要减少到单个min值，请使用'all' flag

MinimumValue = min(TheTable(TheYear < 2011 & TheYear > 1920, 2:end), [], 'all')

% MinimumValue =
%
%    -4