フィルターのクリア

fopen syntax, a new usage???

2 ビュー (過去 30 日間)
jason lee
jason lee 2020 年 7 月 13 日
コメント済み: jason lee 2020 年 7 月 13 日
i found a usage of fopen which is not found in MATLAB documentations
here is my code
s = 'name';
fileID = fopen([s,'.txt'],'w');
this syntax really works. but i could not found the source.
the ordinary usage of fopen could be
fileID = fopen('name.txt','w')
why?
is MATLAB documentation uncomplete?
thank you!
  1 件のコメント
Stephen23
Stephen23 2020 年 7 月 13 日
編集済み: Stephen23 2020 年 7 月 13 日
"but i could not found the source."
Did you try reading the source that I gave in your earlier question?
"is MATLAB documentation uncomplete?"
No. Just because you combined several commands and could not find that specific combination of commands in the documentation does not mean that the documentation is "uncomplete". Lets try another example: here are some commands that I combined just now:
pow2(sqrt(mode([9,9,4,1])))
Will we find that combination in the MATLAB documentation? I very much doubt it. Does this mean that the MATLAB documentation is "uncomplete" ? No, it does not. It means the user needs to look up each of those commands separately, understand how they work, and undertand how the combination works. This is exactly the same for all programming languages.

サインインしてコメントする。

採用された回答

madhan ravi
madhan ravi 2020 年 7 月 13 日
It’s not so complicated [] is used for concatenation
['name', '.txt'] % try it in command window and see what happens
  6 件のコメント
Walter Roberson
Walter Roberson 2020 年 7 月 13 日
Only for obtuse meanings of "required"
In the case of using command syntax instead of function syntax, then if an argument has whitespace or semi-colon or comma in it, then you need to use apostrophes (I seem to remember some cases where double-quotes did not do the trick, but I have not re-tested that in a couple of releases.)
jason lee
jason lee 2020 年 7 月 13 日
yes, thank you all.
as Walter Roberson says '...including a variable that holds the file name.'
that's everything that i need.

サインインしてコメントする。

その他の回答 (0 件)

カテゴリ

Help Center および File ExchangeGet Started with MATLAB についてさらに検索

タグ

製品


リリース

R2019b

Community Treasure Hunt

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

Start Hunting!

Translated by