.NET method with "out" keyword as an input
显示 更早的评论
Hello!
I've run into a tricky situation when trying to work with a .NET library inside MATLAB. Normally, it appears that when a .NET method has a parameter with the out keyword, MATLAB makes it a parameter that is returned instead.
However, I have run into an unusual scenario where a function requires me to input a value for a parameter with the out keyword. I cannot find a public repository for the library in question; However, I've included below an example of how the .NET function in question, ZernikeLSF, is called in a C# script:
After going through the MATLAB documentation on its .NET integration, I have been unable to find a way to input a value for this parameter, zernike_order -- I can only seem to have it be returned. Is there a method of inputting a value here with MATLAB? If not, are there any good workarounds?
1 个评论
Image Analyst
2024-8-23
How are you calling this function in your MATLAB code?
采纳的回答
Walter Roberson
2024-8-23
编辑：Walter Roberson
2024-8-23
0 个投票
C# apparently makes it illegal to read from an "out" parameter before writing to it; https://stackoverflow.com/questions/7716641/using-the-out-keyword-in-c-sharp
If the statements in the above post are correct, then it is not possible to use an "out" parameter to pass in a value.
Although it is legal to pass in an initialized value, the receiving routine cannot read from that value before writing to the variable.
So... the situation you describe apparently cannot occur.
2 个评论
JMB
2024-8-23
Walter Roberson
2024-8-23
For two-way communication, you would use a ref variable instead of an out variable.
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Startup and Shutdown 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
