Is there a way to add keyframes (I key) with LINEAR interpolation as default instead of BEZIER?  I often animate cyclic motion (e.g. planets orbiting around the sun or textures spinning about Z on a sphere) and the created f-curves have BEZIER as default interpolation. This requires me to immediately change the interpolation to LINEAR.  I was wondering if there is a magic key that I can use to have the keyframes added as LINEAR interpolated, or at least have a global setting that I can set to have LINEAR interpolation used by default.
I've been working on some animations recently, and I've noticed that I'm having poor luck with certain things, namely the fact that I don't really use Blender's graph editor very well.  One of the major issues that I have is pretty widespread among 3D graphics programs; when I create an animated object, it defaults to using a curved graph instead of a linear graph, which means that the most movement is at the middle of the animation, and stuff just practically stops near the beginning or the end. While this helps with organic camera movements or such, it's also not what I usually want. Can I set animation curves to default to linear?
What is the exact difference between an autoregressive (AR) and vector autoregressive model (VAR)?  I always thought that VAR would just be for more than two variables, until I learned that AR can also have more than two variables. I.e. I had a misunderstanding(?) that AR models are not always bivariate.  Before I write too much potentially false assumptions about the difference between AR and VAR, it would rather be interested to see if anyone can make provide a quick and good summary. Existence in ZF of a set with countable power set Is it consistent with ZF for there to exist a set $S$ such that the power set $P(S)$ is countable? If so, what is the weakest form of the axiom of choice needed to prove that no such set exists? I'm getting "jumpy" loadings in rollapply PCA in R. Can I fix it? What does distinct permutations mean and how many distinct permutations can be formed from all the letters of word TOFFEE? Every six months a new Ubuntu version will be released. Does anyone know at which time this will be? Black screen after installation of Ubuntu 18.04 I did a fresh complete install of Ubuntu 18.04 on my ASUS M32CD desktop.   Everything during install went fine. At the end it said it was complete complete, and would reboot. Popped the disc out. Rebooted itself back into bios so I changed it back from CD boot as primary to HD.  When it booted up for Ubuntu screen and then everything went black and can’t do anything now! Ugh. Help Tensor product of a sheaf of module and a residue field Let $S$ be a scheme over a finite field $\mathbb{F}_q$ and $\mathcal{L}$ an invertible sheaf on $S$.   In Pink's article (, see section 1.4 on page 13), he states that:  For any section $\ell\in \mathcal{L}(S)$ and any point $s\in S$ we let $\ell(s)\in \mathcal{L}\otimes_{\mathcal{O}_S}k(s)$ denote the value of $\ell$ over the residue field $k(s)$ of $s$.  My question is: what is the definition of $\mathcal{L}\otimes_{\mathcal{O}_S}k(s)$?  We know we can define the tensor product of two $A$-modules or of two $\mathcal{O}_X$-modules, but what is the tensor product of an $\mathcal{O}_X$-module and a field? Proving the AM-GM inequality for 2 numbers $\sqrt{xy}\le\frac{x+y}2$ Why are these pistons pushing? I've lately become hooked into building computers in Minecraft and today I decided to build a giant hard drive. I've built HDDs before, but not at the scale I'm currently attempting, and I anticipated problems. As I was wiring some pistons, they activated and pushed forward oddly. As far as I can tell, there's nothing powering them.    I thought at first that it might be the redstone torches (top left of above pic) but they aren't powered.   Here's a top view of the same pistons. I also thought the line of redstone above  them might be the problem (middle of above pic), but when I destroy it, the pistons stay extended.  Is there a reason why my pistons are extending? If so, is there a way to get them to power (when I want them to) without disturbing the pistons above? How to properly write multiple authors in bibtex file? Boolean b1 = true; Boolean b2 = true; String b3 = 'b1 &amp;&amp; b2'; Boolean b4 = Boolean.valueOf(b3); system.debug('test Bool '+ b4);   Given a string how can you convert into expression without breaking the sting. Let $G$ be a locally compact Hausdorff Abelian topological group.  Let $\mu$ be a Haar measure on $G$, i.e. a regular translation invariant measure.  Let $f$ be fixed in $\mathcal{L}^1(G, \mu)$.  Define the function from $G$ to $\mathcal{L}^1(G)$ that assigns to each $y$ in $G$ the function that takes $x$ in $G$ to $f(xy^{-1})$.  I.e. it assigns the $y$-translate of $f$.  Is this a continuous function of $y$ into $\mathcal{L}^1$?      On p.94 3.10 of  it is asserted that it is.  The usual proof of this sort of thing in cases where $G=\mathbb{R}$, say, is you use density of compactly supported continuous functions, and then dominated convergence.  The former survives, but dominated convergence does not work on nets.  In fact, a limit of a net of measurable functions need not be measurable. Is there a grammatical term for moving a word to the front or back of a sentence? How to loop through a HashMap in JSP? Python Script to Add Fields to Feature Classes I have to try to add a field called 'Name' to a bunch of different feature classes using python, and then access the name of the feature class to fill in the field. I have no idea how to even start this! I know I need a loop but that's all I know. How to calculate overlap between empirical probability densities? I'm looking for a method to calculate the area of overlap between two kernel density estimates in R, as a measure of similarity between two samples. To clarify, in the following example, I would need to quantify the area of the purplish overlapping region:  library(ggplot2) set.seed(1234) d &lt;- data.frame(variable=c(rep("a", 50), rep("b", 30)), value=c(rnorm(50), runif(30, 0, 3))) ggplot(d, aes(value, fill=variable)) + geom_density(alpha=.4, color=NA)     A similar question was discussed , the difference being that I need to do this for arbitrary empirical data rather than predefined normal distributions. The overlap package addresses this question, but apparently only for timestamp data, which doesn't work for me. The Bray-Curtis index (as implemented in vegan package's vegdist(method="bray") function) also seems relevant but again for somewhat different data.  I'm interested in both the theoretical approach and the R functions I might employ to implement it. The suffix -phobia means fear of, often irrational fear of.  For example, according to Wikipedia:       or ophiophobia is a particular type of specific phobia,   the abnormal fear of snakes.   Is there a suffix attachable to ophidio- which would describe a person who is not afraid of snakes, except for, say, a coiled rattler encountered on a trail, but who dislikes them and would not willingly share space with one?  Similarly, an  (don't click here if you are at all arachnophobic) is someone who loves spiders.  Is there a suffix for someone who likes spiders but does not love them?  These are Greek suffixes, and the Greeks, theoretically, were in favor of moderation.  So, are there suffixes in use in English, derivable from Greek or not, for moderate like and moderate dislike?    Edit to explain why the question:  "Is there a suffix for loathing" does not answer my question.  My question is NOT about fear and/or loathing.  My question is about moderate dislike (and moderate like).  I can watch a snake cross my driveway with interest, but would not want it in the house or lounging on my patio.   A person who loathed snakes would not be able to admire the smooth motion of the snake as it glided over the rough gravel and disappeared into the woods.  Loathe is very different from moderate dislike; Phobia is very different from caution. How can I heal undead creatures? Fifth edition seems to have removed any means of healing undead.  The positive/negative energy duality of 3rd edition seems to be gone. Negative energy spells now do necrotic damage; some undead are resistant or immune to necrotic damage, but it isn't listed as healing them. Classic negative energy spells like inflict wounds and harm don't list undead healing as a possible effect.  For zombies and skeletons it might not matter, but liches and vampires would never risk their necks if they didn't have some way to recover hit points. What is it? Programs never open in foreground How can I make programs open in the foreground? Nautilus will open in the background, Remmina (the remote desktop program) also opens in the background. I have to click on the icon in the Launcher for it to come to the foreground. I would think any program that is invoked by any means would come to front, as it opens. It seems if one program invokes another, it will be in the background. If I click on any icons in the Launcher though, it will actually open in the foreground. Im not familiar with Ubuntu or Linux in general but have succesfully installed dual-boot windows7/Ubuntu on a single harddisk on my private PC. I used the "Install Ubuntu alongside them"-option.   On my work PC I have an existing windows 7 64-bit installation that boots from BIOS firmware on a SSD drive (C:), and have my working data (documents etc) on a partition on a separate disk (D:). I now want to install Ubuntu (v 14.04.3) on the remaining unformatted space on D:\ using with the option of choosing system using GRUB. There are of cause fine descriptions around (e.g.  and ). My question is how to setup the partitions in the "something else"- option during the Ubuntu installation.   In  tutorial they assume that all partitions on the D-drive can be deleted; however I only obviously want to keep the working data on the existing D-partition, and place Ubuntu on the residual space (or part of it) on the D:-drive.  A) How is this ensured ? B) how many partitions should I make (boot, root, home, swap ?)  C) and should boot be made primary, and the others logical ? D) Should I set Device for boot loader installation as/dev/sdb - will this not erase the existing D-partion ?