jofer

45 ms·

331.
by jofer 7y ago
You're looking at an interferogram. The method used here can't measure displacement directly. It measures a phase difference between two radar images. Turning this into a map of displacement is non unique in the presence of noise
332.
by jofer 7y ago
To be fair, there are some well documented EM precursors. The most classic is from the 1989 Loma Prieta earthquake: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/GL01... Recently, some fairly con
333.
by jofer 7y ago
On a side note, this is why geometry operations (and particularly reprojections/etc) are sometimes best treated like cryptography: "don't roll your own, use a library". It's not an absolute, by any means, but a GEOS
334.
by jofer 7y ago
If you'd prefer: https://scihub.copernicus.eu/dhus/ or https://registry.opendata.aws/sentinel-2/ https://www.sentinel-hub.com/ is more for visualizing and playing around wit
335.
by jofer 7y ago
That's a bit of a misnomer. Most cities inside/near Houston are zoned, and Houston itself is effectively zoned. Almost all of the sprawl is zoned. (E.g. Katy, Sugarland, Spring, etc all have zoning laws.) Land usage inside Houst
336.
by jofer 7y ago
> If we start a new town or city and put a major employer in the middle, people will move there. Welcome to Houston! Seriously, the typical model for growth here has been for a major employer to make a new campus out in the middle of now
337.
by jofer 7y ago
As far as immigrants "whitening" their names in the early 20th century, it's pretty common, for whatever it's worth... My wife's last name is Gage, but her grandfather changed it from Gadzeki after he lost a local c
338.
by jofer 7y ago
My knee-jerk reaction is to agree with you, but I think we're doing what every generation does... Things aren't as different as they seem. > I never see the kids in my neighborhood doing that. I've never seen any of them l
339.
by jofer 7y ago
So far, all companies I've seen that use OKRs operate something like this: Start of quarter - Management: We need to increase X. Dev: Okay, here's how I'll break that down... (key results) One month later - Management: Everyt
340.
by jofer 7y ago
I'd say no tests isn't an automatic red flag. A working build system and some sort of version control are far more important than tests. I've worked on a few large (>500kloc) codebases with no version control, no tests,
341.
by jofer 7y ago
For the specific example given there, I'd say it's most often called feature engineering. I'd also argue that it's a lot more necessary than most people think, but I'm probably just being stodgy and am biased by wo
342.
by jofer 8y ago
Damn... I may be more underpaid than I realized... I keep hearing from my employer that they won't pay me comparably to my SF-based co-workers as I'm remote, "Texas is cheap", and "No one there makes over 100k"
343.
by jofer 8y ago
A key difference is that software is already covered by copyright. Identical copies violate copyright for software. For a mechanical device, identical copies generally don't violate copyright (trademarks, text, etc aside). Mechanical
344.
by jofer 8y ago
Nice work, by the way! I didn't meant to be overly critical or "nit-picky". The visualization parts of the post are _extremely_ well done, and it's a very clear example of how to apply mathematical tricks to practical pr
345.
by jofer 8y ago
This particular problem pops up in quite a few domains. (We often refer to it as "phase unwrapping" in the geosciences.) The approach here is a good one so long as your noise doesn't result in lots of mistaken "wrap-arou
346.
by jofer 8y ago
Minor gripe - These sort of tools always deride matplotlib a bit, but often show outright incorrect examples of using it. Admittedly, the "right" way of doing it is quite clunky as well: ax.xaxis.set(major_formatter=StrMetho
347.
by jofer 8y ago
There are a lot of minor differences, but the biggest difference is that you're able to be completely independent of the system python install. You bundle a complete python interpreter, all libraries needed, etc. The user doesn't
348.
by jofer 8y ago
I'm amazed this has been downvoted so much... As the OP stated, "globe" view (a.k.a. orothographic or perspective, depending) is not fundamentally better than other projections. It has tradeoffs. You should always choose th
349.
by jofer 8y ago
Most banks require an inspection as well as an appraisal. (Or at least every one I've ever dealt with has. I suppose it varies by region.) It's also common to require a foundation survey in addition to the inspection (a.k.a. a l
350.
by jofer 8y ago
Yeah, the exact start of plate tectonics on Earth is very hard to pin down, but it's almost definitely after the start of life. On the other hand, even when Earth didn't have plate tectonics, it probably never had a stagnant lid,
351.
by jofer 8y ago
"Plate tectonics" means something a bit more specific than "convection currents with the surface of the fluid freezing". In particular, it implies 1) relatively large stable plates, 2) organized regions where crust is c
352.
by jofer 8y ago
They've also been widely used within the geosciences for about 40 years. We refer to gaussian process regression as "kriging" (after the originator if the method) and classification as "indicator kriging", but it&#x
353.
by jofer 8y ago
Hmm... And on a side note, I just realized that the rest of the world does not use the term "sport peppers" the way I do (the exception being a couple of regional brands). I never thought of them as the peppers on a Chicago style
354.
by jofer 8y ago
A big part of this style of sauce is the chunkiness. We used to make tons of these types of sauces growing up, and some things changed the flavor more than others. Leaving it a bit chunky is best for this style (with carrots/etc), i.
355.
by jofer 8y ago
I think people often don't realize the scale at which energy companies use contractors/etc. The "boots on the ground" folks are almost entirely contractors or hired through another company. Plenty of companies exist pu
356.
by jofer 8y ago
I'm not sure externally being held accountable is as important as it would seem. Publicly stated principles such as these give a clear framework for employees to raise ethical concerns in a way that management is likely to listen to. F
357.
by jofer 8y ago
See http://spacenews.com/new-policy-directive-implements-commerc... I'm not sure there's really an opposing view in this case. In broad terms, everyone seems to agree that some commercial space policies are no lon
358.
by jofer 8y ago
Anything that could filter the plastic at scale would likely block fish migrations and have lots of unintended consequences (not to mention that the bulk of it is probably transported during floods, which are going to be hard to filter). It
359.
by jofer 9y ago
My experience is the exact opposite. I've regularly pulled data/observations/ideas from 1920's-1960's era articles and cited them. (Heck, I've used depth soundings from Capitan Cook's expeditions in the
360.
by jofer 9y ago
Oh, yeah! Jewel Cave is a bit unique in this regard. There's a lot of sparry calcite (large, well-formed crystals) inside the cave. The difference is in the size and shape of the crystals. Large crystals like that can only form when

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