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trend with 95 %CI

Added by kunal bali over 5 years ago

I need to calculate the trend with 95 %CI of the given attached file. Could anyone please let me know how can I do that.

regards
Kunal

YM_HOUR01.nc (249 KB) YM_HOUR01.nc

Replies (5)

RE: trend with 95 %CI - Added by kunal bali over 5 years ago

I used

cdo regres input.nc output.nc [is it cottect?]

if it is, then let me know that how can I compute 95% significant level.

regards
Kunal

RE: trend with 95 %CI - Added by Ralf Mueller over 5 years ago

hi Kunal!

There are no dedicated operators for there statistical analysis like confidence interval or level. I doubt, that a regression is the right thing to emulate a confidence level. R should provide better tools for these higher order statistics.

hth
ralf

RE: trend with 95 %CI - Added by kunal bali over 5 years ago

So, I want to compute without 95CI then

cdo regres

could be used?

RE: trend with 95 %CI - Added by Ralf Mueller over 5 years ago

sure, you might also have a look into trend and detrend

hth
ralf

RE: trend with 95 %CI - Added by kunal bali over 5 years ago

How about if I calculate percentile separately using 

cdo yearmin infile minfile 
  cdo yearmax infile maxfile 
  cdo yearpctl,90 infile minfile maxfile outfile

and then overlay (outfile) over the trend plot.

regards
Kunal

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