Hey,
I want to use data that is in a pcap file in matlab, and for this I found the pcap2matlab function (https://www.mathworks.com/matlabcentral/fileexchange/44265-pcap2matlab-importing-network-protocol-analyzer-capabilties-into-matlab). However I don't have a good enough understanding of wireshark to make this work so I was hopping somebody might be able to help me out.
My pcap file is of data gathered by a sonar in multiple frames, and it looks like this (https://imgur.com/EqfoodN). From this I need the data that is in Range Data (https://imgur.com/sQnbiMH) and Angles (https://imgur.com/p0ZYZ0d).
Can anybody help me with what kind of commands I need to use to extract the desired data?
Thanks!
Edit:
As grahamb mentioned the pcap2matlab function uses the same commands as tshark, so if anybody has any experience with that and would like to help me here is the data: https://gofile.io/d/3UnV8S.
Once again thanks for the help!
Edit2:
Sorry forgot to add the dissector, here it is: https://gofile.io/d/bCXBDG
Edit3:
This was the reply email that I got when asking for the source code:
He would need to learn how to parse PCAP files in Matlab.
Bar that, he could use our WirePlay program to send the PCAP file as Ethernet UDP data. Matlab can ingest UDP and TCP/IP Ethernet data.
WirePlay can be downloaded at: http://vvv.r2sonic.com/oldSite/tools/Wireplay.zip
If he is trying to deal with Water Column data, Matlab will struggle due to the data rate. Writing a Matlab C executable would be helpful. Or, do the project in Python which has most of the functionality of Matlab.
If dealing with Water Column data, it would be better to use Water Column data files that the sonar GUI can save. This saves the hassle of trying to deal with Ethernet data or PCAP files. Matlab, et al, can chug away at a WC data file at its own pace.
Edit4:
I have now Solution found a way to load in a text file of just the hex stream information into matlab and then process it. However the data in this text file I now get from exporting it through the file options inside wireshark. The downside to this is that this data is the data that is shown in the frame view (426 bytes) and I need the Reassembled IPv4 (1872 bytes) data which has more information in it.
Do you guys know how I can send the hex stream data of the Reassembled IPv4 to a text file maybe with some functions of Tshark? This link shows where the desired data is located: https://imgur.com/OltUKCthere: https://ask.wireshark.org/question/18298/how-to-export-the-reassembled-ipv4-data-and-not-the-frame-data/
Anybody know how I could be able to do this? I have no idea if this is the right place to ask this as I am really unfamiliar with this type of data
