I would like to join data files that contain different attributes and produce one multicolumn file.

The individual files contain:

Date Time Latitude Longitude Attribute

The attributes are gravity (file 1), magnetics (file2) and bathymetry (file 3).

The final file would be:

Date Time Latitude Longitude Attribute1 Attribute2 Attribute3

I can join them if the individual files start at the same time and have the same length, but I have files that start and end at different times. If an attribute doesn't exist, I intend to enter a null value.

I am wondering if there is a construct that I should be looking at to perform this. I am currently importing each file into an array and then using the most confusing set of ifs and elsifs to cover each possibility.

I have toyed with cutting the input files into segments that are the same size and doing each in turn (ie. gravity and magnetics only, gravity and bathymetry only, bathymetry only). I thought I'd ask if there is another way.

Any suggestions greatly appreciated.

Thanks

In reply to Joining separate data files to make one. by msexton

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