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I have downloaded what multibeam sonar datasets from the marine geoscience data system website http://www.marine-geo.org/index.php

The files have arrived in a .tar folder which contains multiple files with the name SOME_UNIQUE_ID_raw.all.gz. If I use gunzip to unzip a file I get a .all file which i've never encountered before.

Some googling says it contains multiple files but I've no idea how to open it.

Any ideas how to use it? I'm on the latest version of qGIS

closed as unclear what you're asking by user2856, Mapperz Nov 18 '15 at 4:45

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • It would be helpful if you could edit your question and post a link to a specific file or search terms which would enable us to find the actual files you are talking about... – user2856 Nov 18 '15 at 1:11
  • According to this sourceforge forum, the extensions .all = "all laser last"; .alf = "all laser first". Quoting the forum: "You can import such files to SAGA with the Import/Export - Shapes / Import Point Cloud from Text File module." – Joseph Nov 18 '15 at 11:30
  • Or Kongsberg echosounder data files (.all) – user2856 Nov 18 '15 at 22:03

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