find the matching strings in tables

7 次查看（过去 30 天）
Birsen
Birsen 2016-9-23
编辑： Walter Roberson 2016-9-24
Hi,
I have an excel file and I converted to a table. My table has a column called "Locations". The location column contains a long list of string like " Country1-Area1,CityA-52". I would like to rename the sites as follows: Area1,CityA-52. I tried many things to find the first "-" index number in a table. I thought if I find the first index number then I could read the rest of the string. Could not succeed so far. Since it is a table it is more complicated. Any ideas?
Thank you Birsen

请先登录，再回答此问题。

采纳的回答

Walter Roberson
Walter Roberson 2016-9-24
YourTable.Locations = regexprep( YourTable.Locations, '^[^-]+-', '', 'lineanchors');
  2 个评论
Birsen
Birsen 2016-9-24
编辑：Walter Roberson 2016-9-24
Walter, Thank you for the answer. You are right I had to give a demo. Unfortunately your suggestion did not work. It did not give an error but did not change the result neither.
Here it is what I have;
filename='BkgData.xls'
YourTable = readtable(filename);
Here it is how my table looks like
Country Locations ........
======= ======== ==========
'Argentina' 'Argentina-Area1,CityA-52'
'Belgium' 'Belgium-Area5, 346_6
.................
I used your code
YourTable.Locations = regexprep( YourTable.Locations, '^[^-]+-', '', 'lineanchors');
The 'Argentina-Area1,CityA-52' still stands there as a one piece.
Thanks again
Birsen
Birsen 2016-9-24
Walter,
I was wrong. I made a mistake when i tried for the first time. Your code solved the problem. Thanks again.
Birsen

请先登录，再进行评论。

更多回答（2 个）

George
George 2016-9-24
You can use regexp.
a = 'Country1-Area1,CityA-52';
expression = '-.+$'; % a dash, one or more characters until the end of the line
[token, ~] = regexp(a, expression, 'match');
token{1}(2:end) % lop off the dashes
ans =
1×11 char array
Area1,CityA-52
  1 个评论
Birsen
Birsen 2016-9-24
George, Thank you. Your code works great when the string is a single line, but I have a table. Actually 'a" here is a Table not a single line string. In the table there are thousands of line like "a". I can go around and use your code but there got to be a easier way to split the stings and rearrange columns in Table. Thanks Again
Birsen

请先登录，再进行评论。

Image Analyst
Image Analyst 2016-9-24
What about using the strrep() function? If you'd given code for making a demo table, I might have tried it for you. You gotta make it easy for us, or at least that helps.
  1 个评论
Birsen
Birsen 2016-9-24
Image Analyst;
I can see I did not provide enough information. Thank you though. strrep() function is to find and replace the matching strings. If I had only a couple of line that would help but here I am trying to split hundreds of them and each time the string (country name) is different. And they are located in a Table column.
Birsen

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Tables 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by