How to reduce the number of data points in a time series data.

I have an experimental time series data consisting of 1,00,000 data points.Analysis of this long data consuming a lot of time.Is there any method to reduce the data points (say to 10,000 data points only)with out losing the information in the signal.

Answer 1

[Azzi Abdelmalek]

Use downsample function: http://www.mathworks.com/help/signal/ref/downsample.html

[Prince Alex]

Thank you so much Azzi Abdelmalek

[Kurt]

This requires the Signal Processing Toolbox.