Dear Bert and Sara;
I have searched on the internet and found some way to do this like python.
But python is so complicated to me as it needs many steps to be done for
reading and converting it.
I will try terra package to convert it.
On Tue, 25 Jun 2024, 15:15 javad bayat, wrote:
> Richard,
>
Richard,
Many thanks for your email.
I had attached the grib file to the original email to R help team but it
seems you did not receive it.
Unfortunately, I do not know how to reduce the volume or extract some of
the grib file data to send it for you. The file has the volume of 6
Megabyte.
I can se
Hi,
While Bert is correct that there are plenty of tools, my preferred approach
is to use the terra package to load a grib as a raster stack.
>From there, it's straightforward to use all the spatial tools with the
data, or to extract it in whatever form and with whatever dimensions you
wish.
GIv
Unfortunately, Adrian, even trying to coerce a string like "--" to numeric just
produces an NA and comparison fails:
> as.numeric("--") < 0
[1] NA
Warning message:
NAs introduced by coercion
The same is true of anything that is character as it cannot be coerced.
> as.numeric("anything") < 0
[
Do a web search on "convert grib data to csv". You will get many hits. You
probably don't need R to do this.
-- Bert
On Tue, Jun 25, 2024 at 1:33 AM javad bayat wrote:
> Dear all;
> I have downloaded meteorology data from "
>
> https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5
Your message referred to an attached file but there was no attachment,
I have no account at that service, so could not download a sample for
myself. Does the licence for the data even allow you to send some of
it in a message? Which parameters are you extracting? When you say
"it didn't work", w
Oh I see...
It's not that "-7" gets coerced to numeric, but 0 gets coerced to "0".
Of course...
On Tue, Jun 25, 2024 at 11:02 AM Martin Maechler
wrote:
> > Adrian Dusa
> > on Tue, 25 Jun 2024 10:56:07 +0300 writes:
>
> > Dear R fellows,
>
> >> From time to time, just when I t
Also notice that
> "+5" < 0
[1] TRUE
> as.numeric("+5") < 0
[1] FALSE
So the presumption is wrong. It is really about
> sort(c(0:3, "+", "-"))
[1] "-" "+" "0" "1" "2" "3"
-pd
> On 25 Jun 2024, at 10:02 , Martin Maechler wrote:
>
>> Adrian Dusa
>>on Tue, 25 Jun 2024 10:56:07 +03
Dear all;
I have downloaded meteorology data from "
https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels?tab=form";
as .grib format. It has hourly data of a complete year (every hour of every
day of 12 months) and has 6 meteorology parameters. The file has been
attached.
> Adrian Dusa
> on Tue, 25 Jun 2024 10:56:07 +0300 writes:
> Dear R fellows,
>> From time to time, just when I thought I knew my R, I get
>> bitten by some
> small things that reminds one to constantly return to the
> basics.
> I knew for instance that "-1" <
Dear R fellows,
>From time to time, just when I thought I knew my R, I get bitten by some
small things that reminds one to constantly return to the basics.
I knew for instance that "-1" < 0 is TRUE, presumably because R first
coerces to numeric before comparing with 0.
But I did not expect that
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