I'm trying to download some gridded ERDDAP data using the rnoaa package in R. While the data retrieval works perfectly for some datasets, I'm having some problems getting the data for some datasets in particular. For example when I run:
library (rnoaa)
ds.info <- erddap_info ("noaa_pfeg_95de_54ab_a60a")
erddap_grid (ds.info,
time = c("2005-01-01", "2015-01-01"),
altitude = c (0,0),
latitude = c (3.25, 3.75),
longitude = c (72.5, 73.25),
fields = "all")
I get the following error:
`Error: (404) - Resource not found: /erddap/griddap/ncdcOwDly.csv (Currently unknown datasetID=ncdcOwDly)`.
The error is not really consistent because it works sometimes when I try different time-spans. But I get it pretty much every single time I try to download data from the datasets noaa_pfeg_95de_54ab_a60a, noaa_pfeg_1a4b_0c2a_2365 and some others by NOAA-NCDC.
Because erddap_grid works for some datasets but not for others, I'm inclined to think it's not a bug. Maybe it is a problem of the ERDDAP server?, or maybe something to do with my API key? Is there a way around it?
Update - 2015-01-10: It seems it is a server's problem. When trying to download the data using the address generated by the web interface (see below) I get the same error. I guess I'll just have to wait until "they" fix the problem with the database.
http://coastwatch.pfeg.noaa.gov/erddap/griddap/ncdcOw6hr.csv?u[(2006-01-01):1:(2015-01-09T18:00:00Z)][(10.0):1:(10.0)][(3.25):1:(3.75)][(72.5):1:(73.25)],v[(2006-01-01):1:(2015-01-09T18:00:00Z)][(10.0):1:(10.0)][(3.25):1:(3.75)][(72.5):1:(73.25)]
ERDDAP servers often become overloaded and 404 on some requests. These are public-facing servers that do heavy data lifting, after all.
So the answer here is to try again after waiting some time (please wait a while to be nice to the ERDDAP administrators), and contact the server administrator to be sure that your IP address has not been blacklisted for performing too many requests.