read_bag

Read data from a bathymetric attributed grid (BAG) file

BAG files are common export format from many hydrographic survey software packages (eg. Caris). The file structure of BAG files is based on HDF5 and recent versions of Matlab (as of 2011a) has built-in tools to read these files. The metadata in BAG files is embedded in an XML structure that READ_BAG parses. Currently, only a small subset of the available metadata is currently read. More information about the BAG file format can be found here:
https://marinemetadata.org/references/bag
And a repository of bathymetric data stored in BAG file format can be found here:
https://maps.ngdc.noaa.gov/viewers/bathymetry/
Example usage:
%1) read the entire contents of the bag file
bag_file = 'foo.bag';
bag = read_bag(bag_file);
% 2) Read a portion of the bag file (between arbitrary xmin, xmax, ymin,ymax)
bag=read_bag(bag_file,'xlim', [xmin xmax],'ylim',[ymin ymax]);
% 3) Sub-sample every 3rd point in the bag file
bag = read_bag(bag_file,'stride',3)