How to perform eye diagram measuremet from a .mat file that contains "Enumerated" data type from a Simulink model

4 次查看（过去 30 天）
Joyeeta Bhattacharya
编辑： Joyeeta Bhattacharya 2020-8-16
I want to do EyeDiagram measurements using comm.EyeDiagram in Matlab. I have made a Simulink model of a DLL and the output (pulse signal) has been transferred To Workspace and then saved into a .mat file format in the local directory. Then I loaded the file in matlab in a variable "src". Which is showing this " struct with fields:
out: [1×1 Simulink.SimulationOutput]"
Then I initialized the display properties of eye diagram. After that I used the command/defined system object eyeObj(src). It showed the following error:
Error using comm.EyeDiagram/setupImpl
System objects do not support 'Enumeration' type or 'Objects' as inputs. Pass a valid 'Numeric' type to the Step function.
Could anyone please guide me which link am I missing here?
Thanks in advance!

请先登录，再回答此问题。

回答（1 个）

Sarvani Panguluri
Sarvani Panguluri 2020-8-14
Hi,
I assume you are trying to perform Eye diagram measurements using comm.EyeDiagram in MATLAB and the output of your simulink model that is saved to workspace is of the form struct.
ed=comm.EyeDiagram()
ed(x)
After creating comm.EyeDiagram object , while usage it is expected that the input signal 'x' must be either a vector or a matrix.That might be the reason for your error.Please refer to the following link for more detailed insight
https://www.mathworks.com/help/comm/ref/comm.eyediagram-system-object.html#d120e138774
Try using the signal values present in your src to obtain the eye diagram.
Hope it helps!
  1 个评论
Joyeeta Bhattacharya
Joyeeta Bhattacharya 2020-8-16
编辑：Joyeeta Bhattacharya 2020-8-16
Hello,
Thank you for replying.
Yes, my data type is "var". I cannot extract the signal values from the signal separately. The values appear in separate lines like this (just an example, where I have used get command to save my data into "data2"):
data2(:,:,1) =
0
data2(:,:,2) =
0
.
.
.
data2(:,:,100) =
1
I understood your comment that I cannot use an comm.EyeDiagram object for such data type. It would be very helpful if you could elaborate how can I extract tese values into matrix or integer.
Thanks in advance!

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Verification, Validation, and Test 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by