I searched the forums to see if anyone had posted any VI's dealing with Yokogawa wvf files. I didn't see any. I know they publish their specification on the file format. If no one has published VI's or a driver library for it, you could write your own based on that. .csv is comma separated values. You can use the Read from spreadsheeet file with the appropriate delimiter of comma to open that.
.dat file. What is that? The .dat extension is pretty much a generic file extension. There could be dozens to hundreds of different ".dat" formats, some binary, some ASCII readable. You'd have to provide more information on what you want the .dat format to look like, and what software you would be using to try to open it.
