Saturday, September 3, 2016

Remembering and honoring Captain Ben Smith

My good friend Captain Ben Smith passed away last week :(  I don't know what to say.


Tide Tools from CCOM JHC on Vimeo.




Thursday, September 1, 2016

topcoder - NASA Fishing for Fishermen Marathon Match Part 1

I am not associated with this.  I am wondering what their AIS data will be?  Perhaps NAIS and/or Orbcomm since I see USCG / DHS(maybe?) logos on their splash.

http://crowdsourcing.topcoder.com/fishingforfishermen1




Tuesday, August 30, 2016

Course material for open source software engineering

For Earth Science, Carlton College has the Teach the Earth SERC portal for Geoscience Educators.  I used that with Margaret Boettcher when we were co-teach geophysics and intro to earth science.

What is there for teach materials with open source software in computer science and software engineering?  Here is what I know of:


What else is there?

Sunday, July 31, 2016

Image hash functions

I really need to spend some time with image hash functions (geometric hashing).  It would be really helpful for testing to have these in the core GDAL toolbox.  And maybe there needs to be a gdal compare commandline tool that does those plus what perceptualdiff does.

https://fullstackml.com/2016/07/02/wavelet-image-hash-in-python/

http://stackoverflow.com/questions/11336209/fast-and-simple-image-hashing-algorithm

Weird that VisionWorkbench doesn't have image hashes already in its code base.

Saturday, July 23, 2016

BBS door games of the 1980's

I just remembered playing "Nukem" on the Haunted House BBS in Los Altos, CA back around 1985-6 or so.  I don't remember them being called "door games".  You had to use your modem to call into the BBS and tell it that you wanted to enter the game as you logged out.  It would then drop into the game on your way out and you could specify for each round how many factories or missiles you wanted to build and how many missiles you wanted to launch at who.  This memory was triggered by hearing about Sumer/Hamurabi while listening to the Dreaming in Code audio book this morning.   I also remember "Inge's Abode" BBS run by David S? who was a few years older than me and was also in Boy Scout Troop 37.  It ran on his Apple II.  Ah the days of using an HP150 with thermal paper records of my sessions.  And before that it was an HP 2640A terminal.  The fun of Hayes modems.  Back when HP was cool and I got to meet Bill Hewlett when he would say hi to all the kids at the company parties up in the Santa Cruz mountains.

Monday, July 18, 2016

Playing with Javascript

There are lots of ways to play with Javascript, but here is one I broke out from the vaults...

sudo apt-get install rhinosudo apt-get install rlwrap
rlwrap rhino
Rhino 1.7 release 4 2013 08 27js> var s = "1234567890abc";js> s.slice(-5);90abcjs>