Question

我在此表单的txt文件中有很长的降水数据列表：

50810,200301110422,0.1

50810,200301110422,0.1

50810,200301110422,0.1

50810,200301110423,0.1

50810,200301110423,0.1

50810,200301110423,0.1

50810是电台号码

200301110422/23是日期和时间

0.1是以mm为单位的沉淀量。

一个txt文件涵盖一年，并且每次有多个行具有相同的日期和时间我想要总和降水量。

所以，在这种情况下，我希望结果是：

50810,200301110422,0.3
50810,200301110423,0.3

我已经知道如何阅读txt文件并创建一个新文件。我只需要在matlab代码中添加一些内容来压缩行，并使用相同的日期和时间。

有关如何做到这一点的任何建议??

Answer 1

I presume you mean same Station and Date Time so you can sum the precipitation by location?

Iterate though each line and do a split to break each line into it's elements. E.g.:

If previous Station & Date Time = current Station & Date Time then
    add the value.
else
    save what you got to your new text file and proceed to the next.

OR

Copy the structure into a LIST and use some LinQ on it.

OR

Really, you'd want to chuck all this info into a SQL table and then use some aggregate queries on the table. I'd probably go down the SQL route, personally, as it makes it easier to re-extract and manipulate later on.

列表中数字的总和

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