How to remove numbers between specific symbols in text array?
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Hello everyone,
I have a question regarding how to modify a text array in Matlab which contains numbers between two "_" symbols. Here some examples:
- If the string has the following structure: "Gas_1_O2" I expect the following result: "Gas_O2". This should work for every number between two "_" symbols.
- If the string has another structure nothing should happen (e.g. "Time" or "Flow_Fluidization").
The text string will later on be used for renaming a table.
I tried with the function extractBetween but it did not worked as I expected.
Thanks for your support.
Best,
Joseba
采纳的回答
madhan ravi
2019-2-14
a="Gas_1_O2";
regexprep(a,'\_\d*.?\d*\_','_')
5 个评论
Rik
2019-2-14
Can you explain your regex? I don't get why you're not using
'_[0-9]*_'
or
'_\d*_'
Your code will also remove 1k8 in this example:
a='Gas_1k8_O2';
madhan ravi
2019-2-14
The code was put keeping only numbers (including decimals) in mind , '_[0-9]*_' or '_\d*_' would fail if there is a decimal number inbetween.
madhan ravi
2019-2-14
In that case:
regexprep(a,'\_(\d+[\.]?\d*)\_','_')
Stephen23
2019-2-14
"The code was put keeping only numbers (including decimals)..."
Remember that . by itself matches all characters, not just the decimal point / period chraacter.
madhan ravi
2019-2-14
编辑：madhan ravi
2019-2-14
True Stephen that‘s why I used [\.] to preserve dot character in the latter comment.
更多回答（2 个）
Rik
2019-2-14
You can use regular expressions for this task:
str1='Gas_1_O2';
str2='Flow_Fluidization';
regexprep(str1,'_[0-9]*_','_')
regexprep(str2,'_[0-9]*_','_')
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