ovis

10 ms·

61.
by ovis 11y ago
Yeah, when I need neighbouring pixels I extract overlapping chunks. As far as the edge of the scene - there aren't any perfect solutions that I know of. You could try to fudge it by modifying the algorithm to handle the edges with fewe
62.
by ovis 11y ago
Need more details on what you're doing, but many simple operations used in satellite image analysis are embarrassingly parallel. You could, for example, read in chunks or strips using GDAL, distribute them across multiple threads or co
63.
by ovis 11y ago
Not usually illegal, but grounds for disciplinary action or firing. There are many cases of the government punishing employees for inappropriate speech while on the job. Garcetti v. Ceballos (2006) is a Supreme Court decision finding that s
64.
by ovis 11y ago
Even in America there are restrictions about what federal employees may say to the media. Freedom of speech is different when you are representing an employer, although the restrictions on Canadian scientists were egregious.
65.
by ovis 11y ago
Previous discussion of the NASA release: https://news.ycombinator.com/item?id=10487680
66.
by ovis 11y ago
Even prior to this, it was thought that Antarctica was only a small fraction sea level rise at present. Thermal expansion of sea water, melting mountain glaciers, and Greenland appear to contribute far more. The latest IPCC report (Chapter
67.
by ovis 11y ago
I agree with much of what you write, particularly the first three paragraphs. I wanted to make a few comments. Yes, climate science deals with problems are that more difficult to solve with the "hypothesis->experiment->new hypoth
68.
by ovis 11y ago
I'm not sure how it could be considered a "mark against [...] AGW". One thing to keep in mind is that temperatures in East Antarctica are nearly always below freezing, so rising temperatures don't have much of an effect
69.
by ovis 11y ago
There are a few important processes that cause observed sea level rise. In order, with IPCC estimates on the magnitude: - The ocean expands as it warms, which is the single largest contributor right now (1.1 mm/yr). - Mountain glacie
70.
by ovis 11y ago
I've found Metcalfe, Reid, and Cohen[1] to be a fairly clear refresher on Fortran. Unfortunately, the build tools I use don't support many of the nicer features like user-defined types. [1] https://books.google.ca/
71.
Some female Wikipedia editors have been targets of harassment by male colleagues(theatlantic.com)
4 points by ovis 11y ago|1 comments
72.
by ovis 11y ago
I think this is very interesting, although I'm still trying to understand it. So excuse my ignorance, but how does this differ from open source projects such as Jupyter, Sage, and JuliaBox?
73.
California Approves a Sweeping Digital Privacy Law(npr.org)
2 points by ovis 11y ago|0 comments
74.
by ovis 11y ago
One contributor is an increase in the amount of heat flowing from the North Atlantic into the Arctic ocean. Another factor is that the volume of old, thick ice has been declining as well, so the ice present in 2015 is younger than what was
75.
by ovis 11y ago
Also, the sea ice itself is much fresher than the ocean, so it's melting temperature is much closer to 0C than you might expect. And even the distinction between freezing seawater and freshwater at the surface is less then 2C, so it&#x
76.
by ovis 11y ago
I also saw the name and got excited. To me north is Yukon, NWT. Maybe northern BC. The places I care deeply for. But "North" sure sounds cool these days, so those is the south may as well appropriate it.
77.
JuliaCon 2015 Videos(youtube.com)
4 points by ovis 11y ago|0 comments
78.
by ovis 11y ago
Pretty neat. I wish the dots could be bigger. I find it difficult to tell their colour.
79.
by ovis 11y ago
I had the opportunity to collect and work with similar data during grad school. I love the fact that these guys use a DC-3; very cool. We used a sled.
80.
by ovis 11y ago
Has anyone experimented with micropayments? I'd pay a dollar or two to read an article like this now and then, but I couldn't see myself paying $200 a year for a subscription.
81.
Scipy 2015 videos(youtube.com)
5 points by ovis 11y ago|0 comments
82.
by ovis 11y ago
"By default, Go programs run with GOMAXPROCS set to the number of cores available; in prior releases it defaulted to 1." This is exciting, but what are the implications? I remember something once about some 3rd-party cod
83.
by ovis 11y ago
Looks like this is more LP oriented. There are numerous free implementations listed here: https://en.wikipedia.org/wiki/Levenberg%E2%80%93Marquardt_al... Was there something special you needed?
84.
by ovis 11y ago
If this is more than a one-off, then maybe he should be using a quadtree rather than a search along a list of points.
85.
by ovis 11y ago
The Alyeska pipeline in Alaska is built on rails just like this over the parts near the Denali Fault. http://earthquake.usgs.gov/earthquakes/eqarchives/year/2002/...
86.
by ovis 12y ago
Ah, very well. Easterlies might make the return journey harder!
87.
by ovis 12y ago
This is impressive, but the headlines seem to overstate the journey. My first surprise was that they fly from North America to South America, rather than Old World to New World. I wrote that off as being my mistake - Nova Scotia to Venezuel
88.
by ovis 12y ago
The pre-order page explicitly states that the stylus is not included. Tricky marketing!
89.
by ovis 12y ago
> a community that places so much emphasis on the importance of a good pitch A subset do, for sure. But some of us are just playing around.
90.
by ovis 12y ago
> In the lab, Bortolozzo and his coworkers have been able to detect speeds as slow as 20 millionths of a billionth of a meter per second (20 femtometers per second) with a measurement lasting only one second. I wonder how difficult it is

More ›