[R-sig-Geo] AVHRR NDVI3g time series tool?

[Andy Bunn]

Huh. That is very cool. It doesn't look like the NDVI data are in ERDDAP. They are all here in a really easy form: https://ecocast.arc.nasa.gov/data/pub/gimms/3g.v1/

I'll dig some more.

Thanks.

From: Michael Sumner <mdsumner at gmail.com<mailto:mdsumner at gmail.com>>
Date: Monday, March 27, 2017 at 2:03 PM
To: Andy Bunn <andy.bunn at wwu.edu<mailto:andy.bunn at wwu.edu>>, R-sig-Geo <r-sig-geo at r-project.org<mailto:r-sig-geo at r-project.org>>
Subject: Re: [R-sig-Geo] AVHRR NDVI3g time series tool?


Maybe xtractomatic?

On Tue, Mar 28, 2017, 07:55 Andy Bunn <Andy.Bunn at wwu.edu<mailto:Andy.Bunn at wwu.edu>> wrote:
Hi all, shot in the dark here. But is there a prefabricated tool for
extracting the biweekly time series from  AVHRR NDVI3g for a particular
set of points? I can download all the data and process it myself but
wondering if there is a package that would make this easy. E.g., what I'd
like would be to have the biweekly NDVI time series from 1981 to 2015 for
these points without processing all the netcdf files:


require(sp)
pts <- data.frame(ID="NOCA","MORA","OLYM",
                  lat=c(48.776, 48.879,47.802),
                  long=c(-121.299,-121.726,-123.604))
coordinates(pts) <- ~lat+long


Can such a thing be easily done?

Thanks in advance for advice, Andy

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Dr. Michael Sumner
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