blocks|key|1041257|text|推荐的方法|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1041258|这可能是我做这件事的方式(如果我不想在未来弄得一团糟)。|1041259|定位所有旧文件，并将nanstd(替换为nanstdold(，这可以通过多种方式实现自动化。|CODE|1041260|(如果你有一个名为nanstd的变量，你当然会感到痛苦)|1041261|然后，为了安全起见，将您的功能定义如下：|1041262|function+y+=+nanstdold(fts,+varargin)

if+nargin+=+2
+++y+=+nanstd(fts,[],varargin)
else
+++y+=+nanstd(fts,varargin)
end|code-block|syntax|javascript|1041263|您可能需要调整对nanstd的第一个调用，但我认为这条思路应该能让您达到目的。|1041264|确保刻录只接受2个输入参数的nanstd函数，这样您就不会意外地引用它。|1041265|entityMap^0|0|5|0|0|A|7|K|A|0|9|6|0|0|0|8|6|0|E|6|0^^$0|@$1|2|3|4|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|12|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|13|8|@$9|14|A|15|B|J]|$9|16|A|17|B|J]]|D|@]|E|$]]|$1|K|3|L|5|6|7|18|8|@$9|19|A|1A|B|J]]|D|@]|E|$]]|$1|M|3|N|5|6|7|1B|8|@]|D|@]|E|$]]|$1|O|3|P|5|Q|7|1C|8|@]|D|@]|E|$R|S]]|$1|T|3|U|5|6|7|1D|8|@$9|1E|A|1F|B|J]]|D|@]|E|$]]|$1|V|3|W|5|6|7|1G|8|@$9|1H|A|1I|B|J]]|D|@]|E|$]]|$1|X|3|-4|5|6|7|1J|8|@]|D|@]|E|$]]]|Y|$]]

Recommended approach

This is probably the way I would do it (if I didn't want to make a complete mess in the future).

Locate all old files, and replace <code>nanstd(</code> by <code>nanstdold(</code>, this can be automated in many ways. 

(If you actually have variables named <code>nanstd</code> you will feel the pain of course)

Then, to be safe define your function as follows:

<pre><code>function y = nanstdold(fts, varargin)

if nargin = 2
 y = nanstd(fts,[],varargin)
else
 y = nanstd(fts,varargin)
end
</code></pre>

You may need to tweak the first call to <code>nanstd</code>, but I think this line of thought should get you there.

Make sure to burn the <code>nanstd</code> function that only takes 2 input arguments, so you cannot accidentally refer to it.

blocks|key|3655512|text|由于您的遗留定义应该在路径上的内置版本之前，所以您可以简单地将以下内容添加到您的自定义nanstd中，这样它的行为如下：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3655513|function+y+=+nanstd(x,varargin)

if+nargin+>+2
++++wd+=+cd(fullfile(matlabroot,'toolbox','stats','stats'));
++++y+=+nanstd(x,varargin{:});
++++cd(wd)
++++return
elseif+nargin+==+2
++++flag+=+varargin{1};
end

%25//+...+continue+custom+nanstd+function|code-block|syntax|javascript|3655514|根据this+discussion+on+MatlabCentral，运行隐藏函数的唯一方法是切换到它的目录。令人惊讶的是，路径更倾向于当前目录到当前函数--这让我感到惊讶--但这对这种情况是有益的。这允许您简单地修改您的自定义遗留的nanstd函数，以启动到内置定义。|offset|length|3655515|编辑:您可能需要将对stats+nanstd的调用包装为一个try/catch，以便您的目录总是被恢复，即使发生错误。|style|CODE|3655516|entityMap|0|LINK|mutability|MUTABLE|url|http://www.mathworks.com/matlabcentral/answers/50230^0|0|0|2|W|0|0|G|6|U|9|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@$I|Z|J|10|1|11]]|A|$]]|$1|K|3|L|5|6|7|12|8|@$I|13|J|14|M|N]|$I|15|J|16|M|N]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

Since your legacy definition should come before the builtin version on your path, you could simply add the following to your custom nanstd so it behaves as follows:

<pre><code>function y = nanstd(x,varargin)

if nargin &gt; 2
 wd = cd(fullfile(matlabroot,'toolbox','stats','stats'));
 y = nanstd(x,varargin{:});
 cd(wd)
 return
elseif nargin == 2
 flag = varargin{1};
end

%// ... continue custom nanstd function
</code></pre>

As per <a href="http://www.mathworks.com/matlabcentral/answers/50230">this discussion on MatlabCentral</a>, the only way to run a shadowed function is to change to its directory. Amazingly enough, the path favors the current directory to the current function — something that surprised me — but it's beneficial for this case. This allows you to simply modify your custom legacy nanstd function to kick out to the builtin definition.

Edit: you may want to wrap the call to the stats <code>nanstd</code> with a <code>try/catch</code> so your directory always gets restored, even in case of an error.

blocks|key|2515503|text|交替法|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2515504|如果您感到自信，您可以尝试设计一个替换规则，以自动更新所有旧文件而不引入新功能。首先要做的事：|2515505|找出所有发生的事|2515506|nanstd(+%2B+something%2B+comma+that+is+not+between+{}+or+()+|code-block|syntax|javascript|2515507|并代之以|2515508|nanstd(+%2B+something%2B+comma+%2B+flag+argument+%2B+comma|2515509|特别是对于这一个，你会想要备份你的文件第一！|2515510|entityMap^0|0|3|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Z|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|10|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|11|8|@]|D|@]|E|$M|N]]|$1|O|3|P|5|6|7|12|8|@]|D|@]|E|$]]|$1|Q|3|R|5|L|7|13|8|@]|D|@]|E|$M|N]]|$1|S|3|T|5|6|7|14|8|@]|D|@]|E|$]]|$1|U|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|V|$]]

Alternate approach

If you feel confident, you could try to design a replacement rule to automatically update all your old files without introducing a new function. Something to start with:

Find all occurences of

<pre><code>nanstd( + something+ comma that is not between {} or () 
</code></pre>

And replace them with

<pre><code>nanstd( + something+ comma + flag argument + comma
</code></pre>

Especially for this one you will want to back up your files first!

We have a legacy definition of a matlab function nanstd.m which is being called in a whole lot of functions.

The legacy version has definition like:

<pre><code>function y = nanstd(x, dim);
</code></pre>

The above definition is stored on our local server drive "H\Util\Functions".

The newer version of matlab has a differetn definition which is:

<pre><code>function y = nanstd(fts, varargin)
</code></pre>

The above translates to:

<pre><code>Y = nanstd(X,flag,dim)
</code></pre>

The above is stored under "C\Program Files\Matlab".

We need both versions to be available. Is it possible that I can write a code which says something like if there are 2 arguments input use nanstd.m at "H\Util\Functions" and if there are 3 inputs use nanstd.m at "C\Program Files\Matlab".

Thanks

Working with different version of Matlab Function

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

我们有一个matlab函数nanstd.m的遗留定义，它在很多函数中都被调用。遗留版本的定义如下：function y = nanstd(x, dim);上述定义存储在本地服务器驱动器"H\Util\Functions“中。最新版本的matlab有一个不同的定义，即：function y = nanstd(fts, v...

问使用不同版本的Matlab函数
EN

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问使用不同版本的Matlab函数EN