I ran into a bug with google earth, which refused to show my kml files properly.
My curves had been straightened out and data were missing.
This is because the decimal point notation is not respected when parsing kml files - my Swedish localization thinks decimal points are a comma (,) and not point (.).
This is a workaround:
start google earth with LANG set to something else.
$LANG= googleearth
For me, this bug appears on google earth 5.1.3506.3999 (beta) but not 5.0.11377.1968 (beta). Now these two run on different systems, but anyway....
Sorry for not having time to dig the bug archives etc. Post links if you know any relevant links for this bug.
I have not seen anything about decimal points in the kml specification. If you see it somewhere, please post a link.
And while I am at it: Thanks google (and/or Keyhole?), for distributing this fantastic piece of software.
fredag 29 januari 2010
lördag 23 januari 2010
Spamkommentarer
Jag har börjat få fler och fler spamkommentarer på bloggen. Jag har tröttnat på att gå in och ta bort dom, så nu har jag aktiverat att jag måste godkänna kommentarer.
Det är så att man undrar vem som har tid att sitta och skriva kommentarer överallt.
Det är så att man undrar vem som har tid att sitta och skriva kommentarer överallt.
torsdag 21 januari 2010
Musiktips
Vilket ös!
New World Symphony av Earth, wind and fire.
http://open.spotify.com/track/1RqwrjfM6mmh2vgBzNNYJU
New World Symphony av Earth, wind and fire.
http://open.spotify.com/track/1RqwrjfM6mmh2vgBzNNYJU
fredag 15 januari 2010
Energiförbrukning för akvarium
Jag lånade ut min elenergimätare till en bekant, med villkor att han delade med sig av resultatet. Han har nu mätt upp sitt 1m³(!) saltvattenakvarium och fler andra grejer.
Akvariet drar alltså bortåt 900 W!
Övriga saker:
Akvariet drar alltså bortåt 900 W!
| På | Standby | ||
| Elförbrukning | Beskrivning | W | W |
| Big Pump | Cirkulationspump sump-akvarium, 14m tryck | 100 | |
| UV pump | 39 | ||
| UV light | 28 | ||
| Calcium reactor | 2000 liter | 30 | |
| Heater | 2st - 1st i backup standbyläge | 190 | 13 |
| Skimmer | 1500 liter | 37 | |
| Cirk pump | 2st mellan kammare | 12 | |
| Refill pump | 2min/dygn | 22 | |
| Streamer | 3st | 67 | |
| Moon light | Endast nattdrift | 4 | |
| Big light | Dimbar 250 - 415Watt, 6 timmar/dygn | 310 | |
| T5 Blue light | Ej nattdrift | 50 | |
| T5 White | Ej nattdrift | 50 | |
| Summa: | 939 |
| På | Standby | ||
| Elförbrukning | Beskrivning | W | W |
| Julljus | 4 ljusstakar, seriekopplade | 90 | |
| Julljus | 3 ljusstakar, seriekopplade | 75 | |
| Textilgranar | Bordsdekor | 30 | |
| Utelampor | Lågenergi, 3-11watt/st | 260 | |
| Projektor | 150 | 9 | |
| Surround | 38 | 0 | |
| PS3 | 135 | 10 |
torsdag 14 januari 2010
Tack Google
Jag ställer mig i raden av gratulanter till Google som nu inte längre infinner sig i att medverka till den kinesiska censuren.
Googles blogginlägg om saken(engelska)
Ett mer utförligt utlägg (på svenska)
Förhoppningsvis leder detta på sikt till att censuren kan luckras upp.
Googles blogginlägg om saken(engelska)
Ett mer utförligt utlägg (på svenska)
Förhoppningsvis leder detta på sikt till att censuren kan luckras upp.
lördag 9 januari 2010
Så funkar det - universum
Det här föredraget handlar om hur universum fungerar. Sevärt! En timme underhållning :-)
torsdag 7 januari 2010
Smokeping on debian lenny
Smokeping is a tool to monitor network connectivity and visualize it in a very easily readable way.
I had some trouble to get it started - not the smokeping part, but getting the apache configuration going. This is a writeup on what I did to get it going. It is used on Debian Lenny, but should work for ubuntu as well. To lighten up the text, I show one of the graphs I got from it. I can see there was a network disruption for approximtely 20 minutes.
I wrote this by following the material on
Install smokeping:
(optional)
Configure the interval in /etc/smokeping/config.d/Database as the default values are, in my opinion, a bit to sparse to detect network loss.
Delete the statistics database to avoid the error during restart in the next step:
restart smokeping:
add targets in /etc/smokeping/config.d/Targets:
restart smokeping to make it start monitoring the newly added entries above (this lets you have some statistics to view, collected while getting the rest to work):
Smokeping should now be running. To be able to see some results you have to run a web server with cgi capabilities. I believe one can generate the content statically instead and serve it as static pages, but I use apache/cgi here.
(Install apache if you have not done already. apt-get install apache2)
One has to edit an existing or create a new apache configuration file. I serve the stats through password protected pages on ssl, this is an excerpt from that file which is /etc/apache2/sites-available/ssl. If you do not care about encryptiong and/or protecting the page, you can set it up using a much shorter configuration file. Just leave out the bits about authentication.
I do not know much about apache configuration and the configuration could probably be improved while obtaining the same or higher security level.
Then reload the apache configuration with
And voila, I get nice graphs when pointing the browser to the www.myserver.net/smokepingcgi/smokeping.cgi
To get the name right, edit /etc/smokeping/config.d/General to contain your name instead of the default.
I had some trouble to get it started - not the smokeping part, but getting the apache configuration going. This is a writeup on what I did to get it going. It is used on Debian Lenny, but should work for ubuntu as well. To lighten up the text, I show one of the graphs I got from it. I can see there was a network disruption for approximtely 20 minutes.
I wrote this by following the material on
- howtoforge.com tutorial
- smokeping documentation
- debian documentation /usr/share/doc/smokeping/README.Debian
- apache cgi documentation
Install smokeping:
apt-get install smokeping
(optional)
Configure the interval in /etc/smokeping/config.d/Database as the default values are, in my opinion, a bit to sparse to detect network loss.
step = 30
pings = 3
Delete the statistics database to avoid the error during restart in the next step:
rm /var/lib/smokeping/Local/LocalMachine.rrd
restart smokeping:
/etc/init.d/smokeping restart
add targets in /etc/smokeping/config.d/Targets:
+ dreik
menu=dreik
title=dreik
++ sniiigel
menu=sniiigel
title=sniiigel
host=sniiigel.dreik.se
++ rufus
menu=rufus
title=rufus
host=rufus.paulsundvall.net
restart smokeping to make it start monitoring the newly added entries above (this lets you have some statistics to view, collected while getting the rest to work):
/etc/init.d/smokeping restart
Smokeping should now be running. To be able to see some results you have to run a web server with cgi capabilities. I believe one can generate the content statically instead and serve it as static pages, but I use apache/cgi here.
(Install apache if you have not done already. apt-get install apache2)
One has to edit an existing or create a new apache configuration file. I serve the stats through password protected pages on ssl, this is an excerpt from that file which is /etc/apache2/sites-available/ssl. If you do not care about encryptiong and/or protecting the page, you can set it up using a much shorter configuration file. Just leave out the bits about authentication.
I do not know much about apache configuration and the configuration could probably be improved while obtaining the same or higher security level.
Alias /smokeping/ /var/www/smokeping/
Options -FollowSymLinks
Options -Indexes
AllowOverride None
AuthUserFile /x/y/z/passwords
AuthGroupFile /x/y/z/groups
AuthName "bla da bla smokeping"
AuthType Basic
AuthBasicProvider file
Require group webreaders
Alias /smokepingcgi/ /usr/lib/cgi-bin/
Options +ExecCGI
AddHandler cgi-script cgi
SetHandler cgi-script
Options -FollowSymLinks
Options -Indexes
AllowOverride None
AuthUserFile /x/y/z/passwords
AuthGroupFile /x/y/z/groups
AuthName "bla da bla smokeping"
AuthType Basic
AuthBasicProvider file
Require group webreaders
Then reload the apache configuration with
/etc/init.d/apache2 reload
And voila, I get nice graphs when pointing the browser to the www.myserver.net/smokepingcgi/smokeping.cgi
To get the name right, edit /etc/smokeping/config.d/General to contain your name instead of the default.
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