Plotting .mat file

Hi,

I'm new to matlab. I'm trying to create a graph from a .mat file which I recerded on my phone, but I'm unable to do so. Any help appriciated.

[Matt J]

Your metro.mat file doesn't contain anything.

[Star Strider]

There is nothing to plot, although sensorlog_20231201_123144.m4a could have something if you want to share it.

Answer 1

[Sulaymon Eshkabilov]

The problem with your data is that you have not collected any measured data or saved in it.

A = load('metro.mat')

A = struct with fields:
    AudioInfo: [1×1 struct]

A.AudioInfo

ans = struct with fields:
             Filename: 'sensorlog_20231201_123144.m4a'
    CompressionMethod: 'AAC'
          NumChannels: 2
           SampleRate: 44100
         TotalSamples: 2511768
             Duration: 56.9562
                Title: []
              Comment: []
               Artist: []
              BitRate: 96

Answer 2

[Les Beckham]

That mat file doesn't contain anything interesting to plot.

load metro.mat
whos

  Name           Size            Bytes  Class     Attributes

  AudioInfo      1x1              1784  struct              
  ans            1x34               68  char                
  cmdout         1x33               66  char                

AudioInfo

AudioInfo = struct with fields:
             Filename: 'sensorlog_20231201_123144.m4a'
    CompressionMethod: 'AAC'
          NumChannels: 2
           SampleRate: 44100
         TotalSamples: 2511768
             Duration: 56.9562
                Title: []
              Comment: []
               Artist: []
              BitRate: 96