Trouble running download.sh

Loving this wind layer example, but having trouble running it locally.

• When I try to download data, I got a no messages found in utml.grub error.
• Running on OSX Mojave and have the brew dependencies mentioned in readme.

Thanks in advance!

{"u":no messages found in utmp.grib,"v":no messages found in vtmp.grib}

[grahamkane]

The url seems to have changed again. I found I also needed to change download.sh as grib_set (ecCodes Version 2.22.1) was complaining about the input / output files having identical names:

GFS_URL="https://nomads.ncep.noaa.gov/cgi-bin/filter_gfs_${RES}.pl?file=gfs.t${GFS_TIME}z.pgrb2.${RES}.f000&${LEVEL}&${BBOX}&dir=%2Fgfs.${GFS_DATE}/${GFS_TIME}/atmos"

curl "${GFS_URL}&var_UGRD=on" -o utmp.grib
curl "${GFS_URL}&var_VGRD=on" -o vtmp.grib

grib_set -r -s packingType=grid_simple utmp.grib utmp_out.grib
grib_set -r -s packingType=grid_simple vtmp.grib vtmp_out.grib

printf "{\"u\":`grib_dump -j utmp_out.grib`,\"v\":`grib_dump -j vtmp_out.grib`}" > tmp.json

rm utmp.grib vtmp.grib utmp_out.grib vtmp_out.grib

This worked along with the changes to prepare.js previously mentioned.

[nikolamilunovic]

I found I had to change the URL as follows:

GFS_URL="https://nomads.ncep.noaa.gov/cgi-bin/filter_gfs_${RES}.pl?file=gfs.t${GFS_TIME}z.pgrb2.${RES}.anl&lev_max_wind=on&${BBOX}&dir=%2Fgfs.${GFS_DATE}%2F${GFS_TIME}%2Fatmos"

and update prepare.js as follows:

const umessage = data.u.messages[0];
const vmessage = data.v.messages[0];

const unpack = (message) =>
    message.reduce((acc, { key, value }) => ({ ...acc, [key]: value }), {});
const u = unpack(umessage);
const v = unpack(vmessage);

URL Not working for me,

Data file is not present: /common/data/model/com/gfs/prod/gfs.20200701/00/atmos/gfs.t00z.pgrb2.1p00.anl