I have variable data in a large 10Hz file (typically multiple columns - 10 columns, and upwards of 20K rows) that I am attempting to reduce to 1Hz by taking every 10th point in the data and recreating that data on new worksheet. From the 1Hz data, I then need to linearly interpolate those data points back to a 10Hz data set on another new worksheet.

Can anyone provide some coding assistance? I would like to create a VBA macro to run this on various files in the future.

Thanks in advance for any help!