如何在 Matlab 中使用正则表达式拆分带有复杂分隔符的字符串？

Question

我有这样一个字符串：

"%","W/m²","mm","Deg C","%","W/m²","MJ/m²","","uSec","","uSec","","uSec"

我想根据复杂的分隔符拆分它：每个项目都用连字符（左右）界定并用逗号分隔。

备注：

包括百分比或 2 的幂等字符，应读入。在我的示例中，我列出了 13 个项目（3 个空白）。
空字段（项目），也应包括（不丢弃）并替换为字符串 'unitless'
项目也可以包含空格("Deg C")

有人能帮帮我吗？

Answer 1

还有其他方法可以做到这一点，但 regexp 应该可以做到。出于速度和兼容性原因，我更喜欢 regexp('split') 而不是 strsplit。后者相对较新。

str = '"%","W/m²","mm","Deg C","%","W/m²","MJ/m²","","uSec","","uSec","","uSec"';
units = regexp(str, ',', 'split'); % split by comma
units = regexp(units, '(?<=").*(?=")', 'match', 'once'); % get content between quotes
units(cellfun(@isempty, units)) = {'unitless'}; % set empty to unitless

如何在 Matlab 中使用正则表达式拆分带有复杂分隔符的字符串？

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