Error in basemap beach ball example

Users Mailing List Archive
1

Hello, I’m new to obspy and just running through the tutorial, but I can’t run the following example:

http://docs.obspy.org/tutorial/basemap_plot_with_beachballs.html

ValueError: could not convert string to float: N8�t^q`�>��}����W���l���

It seems maybe the SRTM data for download on the page isn’t ASCII

2

Hi Scott,

some browser have an issue downloading this GZIP packed file (server
is sending the correct file encoding) - so either try it with another
browser or use a classical tool like wget in command line.
Additionally you may fetch the same data from http://srtm.csi.cgiar.org/.

Cheers,
Robert

Hello, I'm new to obspy and just running through the tutorial, but
I can't run the following example:

http://docs.obspy.org/tutorial/basemap_plot_with_beachballs.html

ValueError: could not convert string to float:
N8?t^q`?>??}???W???l???

It seems maybe the SRTM data for download on the page isn't ASCII

- --
Dr. Robert Barsch

EGU Office Munich
Luisenstr. 37
80333 Munich
Germany

Phone: +49-89-21806549
Fax: +49-89-218017855
eMail: barsch@egu.eu

3

Robert,

Just so you know I tried getting the file through Safari, Chrome, & Firefox and curl. I then use

tar -xzvf srtm_1240-1300E_4740-4750N.asc.gz

And get the following error every time
tar: Unrecognized archive format

--Scott

4

Hi Scott,

watch out! It is not a .tar.gz or .tgz file - instead its "only" a
gzipped file (.gz) - so a "gunzip srtm_1240-1300E_4740-4750N.asc.gz"
should work. However the Python script reads directly from the .gz
file so you should not need to touch it at all.

- ----
barsch@lvps176-28-22-73:~$ wget
http://examples.obspy.org/srtm_1240-1300E_4740-4750N.asc.gz

- --2012-08-13 16:16:53--
http://examples.obspy.org/srtm_1240-1300E_4740-4750N.asc.gz
Resolving examples.obspy.org... 85.214.39.232
Connecting to examples.obspy.org|85.214.39.232|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 113396 (111K) [application/x-gzip]
Saving to: `srtm_1240-1300E_4740-4750N.asc.gz'

100%[===================================================================================================================================================>]
113,396 --.-K/s in 0.1s

2012-08-13 16:16:53 (951 KB/s) - `srtm_1240-1300E_4740-4750N.asc.gz'
saved [113396/113396]

barsch@lvps176-28-22-73:~$ tar -xzf srtm_1240-1300E_4740-4750N.asc.gz

tar: This does not look like a tar archive
tar: Skipping to next header
tar: Exiting with failure status due to previous errors

barsch@lvps176-28-22-73:~$ gunzip srtm_1240-1300E_4740-4750N.asc.gz

barsch@lvps176-28-22-73:~$ cat srtm_1240-1300E_4740-4750N.asc

ncols 400
nrows 200
xllcorner 12�40'E
yllcorner 47�40'N
xurcorner 13�00'E
yurcorner 47�50'N
cellsize 0.00083333333333333
NODATA_value -9999
682 681 685 690 691 689 678 670 675 680 681 679 675 671 674 680 679 679
....

Hope it helps,
Robert

Robert,

Just so you know I tried getting the file through Safari, Chrome,
& Firefox and curl. I then use

tar -xzvf srtm_1240-1300E_4740-4750N.asc.gz

And get the following error every time tar: Unrecognized archive
format

--Scott

- --
Dr. Robert Barsch

EGU Office Munich
Luisenstr. 37
80333 Munich
Germany

Phone: +49-89-21806549
Fax: +49-89-218017855
eMail: barsch@egu.eu