我遇到了问题,我确信它的修复非常简单,但我一直在寻找大约一个小时的答案,似乎无法解决问题。
我有一个字符向量,其数据看起来有点像这样:
[5] "Toronto, ON" "Manchester, UK"
[7] "New York City, NY" "Newark, NJ"
[9] "Melbourne" "Los Angeles, CA"
[11] "New York, USA" "Liverpool, England"
[13] "Fort Collins, CO" "London, UK"
[15] "New York, NY"
基本上我想摆脱2位或更短的所有字符元素,以便数据看起来如下:
[5] "Toronto, " "Manchester, "
[7] "New York City, " "Newark, "
[9] "Melbourne" "Los Angeles, "
[11] "New York, USA" "Liverpool, England"
[13] "Fort Collins, " "London, "
[15] "New York, "
我知道如何摆脱的逗号。正如我所说的,我确信这非常简单,任何帮助都会非常感激。谢谢!
答案 0 :(得分:5)
您可以对带有字边界的单词字符staging
使用量词,\\w
将匹配带有一个或两个字符的单词;如果您有多个匹配的模式,请使用 gsub 删除它:
\\b\\w{1,2}\\b
注意gsub("\\b\\w{1,2}\\b", "", v)
# [1] "Toronto, " "Manchester, " "New York City, " "Newark, " "Melbourne" "Los Angeles, " "New York, USA"
# [8] "Liverpool, England" "Fort Collins, " "London, " "New York, "
匹配字母和带有下划线的数字,如果您只想考虑字母字母,可以使用\\w
。
gsub("\\b[a-zA-Z]{1,2}\\b", "", v)
答案 1 :(得分:0)
不使用正则表达式,但它完成了工作:
invoiceListTemplate+=`<tr width=100%>
<td>${a.Id}</td>
<td>${a.Dt}</td>
<td>${a.Dt}</td>
<td>${a.Amt}</td>
<td>${a.CurrencyCd}</td>
<td>${a.OId}</td></tr>`;
Uses this to display: $("#invoiceListOutput").html(invoiceListTemplate);
124124142124-235325 2016-10-07 2016-10-07 -5551.86 USD 0000100738
TEST-2332432-SDFSF 2016-10-06 2016-11-05 200 USD **null**
xml with s 2016-10-05 2016-10-05 100 USD 0000105153