17 April 2013

Local Regression v the Gaussian Mask

Introduction

On my previous post local-regression-loess-and-sun-spot I went to great lengths to explain how local regression works in practice. To my great delight I discovered that the UK Met office is using their own version of local regression. 

But, instead of calling it local regression they call it a Gaussian mask.

See if you can spot a difference or a similarity?

Met office gaussian mask

So, instead of referring to this process as a local regression, and acknowledging the work done by the Americans, a new term to describe the technique was created

28 March 2013

Plotting of Sun Spot Cycles: Where are we now?

In my first blog relating to the sun spot cycle count I discussed the application of local regression (LOESS) on the sunspot cycle recordings.  I showed the underlying logic of the LOESS regression and posted the first results using this method, so now I can just continue to post results of the exercises I've done. 

Sun Spot Cycle 23

Raw sun spot count daily data

MA 390 day moving average

LOESS 390 v MA 390

Sun Spot Cycle 22

Raw sun spot count daily data

MA 390 day moving average

LOESS 390 v MA 390

Sun Spot Cycle 21

Raw sun spot count daily data

MA 390 day moving average

LOESS 390 v MA 390

Sun Spot Cycle 19

Raw sun spot count daily data

MA 390 day moving average

LOESS 390 v MA 390

Sun Spot Cycle 18

Raw sun spot count daily data

MA 390 day moving average

LOESS 390 v MA 390

Sun Spot Cycle 17

Raw sun spot count daily data

MA 390 day moving average

LOESS 390 v MA 390

Sun Spot Cycle 16

Raw sun spot count daily data

MA 390 day moving average

LOESS 390 v MA 390

Sun Spot Cycle 15

Raw sun spot count daily data

MA 390 day moving average

LOESS 390 v MA 390

Sun Spot Cycle 14

Raw sun spot count daily data

MA 390 day moving average

LOESS 390 v MA 390

Sun Spot Cycle 13

Raw sun spot count daily data

MA 390 day moving average

LOESS 390 v MA 390

Sun Spot Cycle 12

Raw sun spot count daily data

MA 390 day moving average

LOESS 390 v MA 390

Sun Spot Cycle 11

Raw sun spot count daily data

MA 390 day moving average

LOESS 390 v MA 390

Sun Spot Cycle 10

Raw sun spot count daily data

MA 390 day moving average

LOESS 390 v MA 390

Sun Spot Cycle 9

Raw sun spot count daily data

MA 390 day moving average

LOESS 390 v MA 390

Sun Spot Cycle 8

Raw sun spot count daily data

MA 390 day moving average

LOESS 390 v MA 390

Sun Spot Cycle 7

Raw sun spot count daily data

MA 390 day moving average

LOESS 390 v MA 390

Sun Spot Cycle 6

Raw sun spot count daily data

MA 390 day moving average

LOESS 390 v MA 390

Updated 29 March 2013

FIN