Is there a clever way to combine two or more geoJSON files? I would like to combine the two geoJSON files here:
I want OSM administrative boundaries from . I can get the geodata in different formats there, but the attribute data always is a separate JSON file. I want them both in just one file, or to be able to merge the information.   I haven't found a solution to merge the GeoJSON.   What's the workflow to get the two files joined and saved as a shapefile, for example?
From      Every linear function on a finite-dimensional space is continuous.   I was wondering what the domain and codomain of such linear function are?   Are they any two topological vector spaces (not necessarily the same), as along as the domain is finite-dimensional? Can the codomain be a different normed space (and may not be finite-dimensional)?  I asked this because I saw elsewhere the same statement except the domain is a finite-dimensional normed space, and am also not sure if the codomain can be a different normed space (and may not be finite-dimensional).  Thanks and regards! Is there a way to see the pokestops and gyms on a map? I'm on vacation on a pretty rural area and there is only 3 pokestops and a gym around me. I wonder how many pokestops and gyms are near my house in another city.   Is there a way to see pokestops and gyms in other places in a map (preferably online)?    There seems so be loads of websites linked. While posting your own website is allowed (as long as it answers the question properly) please keep in mind that stating your affiliation is required (Add something like "Disclaimer: I own this website" to the end of your answer) in order to avoid being spam flagged. Detecting if resistances are parallel or series in complex circuits I know how to detect when resistors are arranged in parallel or series arrangement and I can also find their equivalent resistance in simple circuits or when resistances are connected in form of triangle but what happens when the arrangement is complex like this :   Which resistors are parallel and which are in series ? How can I find the equivalent resistance in such cases ? Is there rule or method for figuring this out ? This System Information is from Process Explorer. There is still physical memory available but the system shows nearly no RAM left.  Task Manager also shows that about 74% of total RAM is used.  Since installing Windows 8.1, the computer had 4+8=12 GB of RAM. I upgraded it by changing the 4 GB to an 8 GB module. Could that be the problem? Or is this behavior normal and I've just misunderstood the meaning of available physical memory? I would like to search an entire MS SQL 2000 database for one value. This would be to aid development only. Keep that in mind when considering this question.   This will get all the table names and the column of the data type I'm looking for:  SELECT Columns.COLUMN_NAME, tables.TABLE_NAME FROM INFORMATION_SCHEMA.Columns as Columns  JOIN INFORMATION_SCHEMA.TABLES as tables  On Columns.TABLE_NAME = tables.TABLE_NAME WHERE Columns.DATA_TYPE = 'INT'     I was thinking something like this:  -- Vars DECLARE @COUNTER INT DECLARE @TOTAL INT DECLARE @TABLE CHAR(128) DECLARE @COLUMN CHAR(128) DECLARE @COLUMNTYPE CHAR(128) DECLARE @COLUMNVALUE INT  -- What we are looking for SET @COLUMNTYPE = 'INT' SET @COLUMNVALUE = 3 SET @COUNTER = 0  -- Find out how many possible columns exist SELECT @TOTAL = COUNT(*)   FROM INFORMATION_SCHEMA.Columns as Columns  JOIN INFORMATION_SCHEMA.TABLES as tables  On Columns.TABLE_NAME = tables.TABLE_NAME WHERE Columns.DATA_TYPE = @COLUMNTYPE PRINT CAST(@TOTAL AS CHAR) + 'possible columns' WHILE @COUNTER &lt; @TOTAL BEGIN     SET @COUNTER = @COUNTER +1     -- ADD MAGIC HERE END   Any ideas?  UPDATE I recently found this  that works quite well. How do I move the MySQL data directory? I am trying to move the data directory of my MySQL database to a second disk array that I have as a mount point /array2/.  The problem I am having is I have tried everything and after I modify the location of datadir in my.cnf mysql will not start up again.  All I get is:  start: Job failed to start Reprojecting raster from lat/lon to UTM in R? How do I write a correct micro-benchmark in Java? What kind of beings are shown by the Marauder's Map? The map definitely shows people (humans) inside the castle But I remember reading Harry watching Peeves bouncing around in the trophy room and Peeves is not human And I don't remember if I had exactly read it or not, but  says that it shows the ghosts as well So what kind or creatures or beings come under the map's radar? Any living creature? Or humanoids? Or creatures with a significant size or intelligence? Would it show the house elves in the kitchen, centaurs in the forests and the merpeople in the lake as well? What about the giant squid and the thestrals or unicorns? Would it have shown the troll from the Philosopher's stone if they had the map then? What about Quirell/Voldemort? Would he have shown up on the map? And the basilisk from the chamber of secrets (the book)? May be the chamber itself was unplottable but if the map could show the basilisk he would have been visible when he was slithering around in the pipes. How to answer a negative question in English? Q: "Don't you know?"   If I really don't know, how should I respond to this question? Yes or No?  There's a similar question on EL&amp;U, but the answer isn't clear how it works:      Also here on ELU too:      These answers are confusing. I want to know what one word answer I can use. In other words I want to know:   What will native speakers understand if I reply No to this question? What will native speakers understand if I reply Yes to this question? In Ubuntu 18.04, I can create a file as one user in /tmp, and write to it as user root (despite the sticky bit being set on /tmp). In Ubuntu 20.04, I get a Permission Denied error as user root. Ubuntu 18.04: # As user &quot;ubuntu&quot;: touch /tmp/tmplock  # As user &quot;root&quot;: echo &quot;foo&quot; &gt; /tmp/tmplock  cat /tmp/tmplock # Outputs &quot;foo&quot;  ls -lah /tmp drwxrwxrwt 32 root   root    20K Jun 16 18:36 . -rw-rw-r--  1 ubuntu ubuntu    4 Jun 16 18:36 tmplock  Ubuntu 20.04: # As user &quot;ubuntu&quot;: touch /tmp/tmplock  # As user &quot;root&quot;: echo &quot;foo&quot; &gt; /tmp/tmplock # Outputs: bash: /tmp/tmplock: Permission denied  ls -lah /tmp drwxrwxrwt 12 root   root   4.0K Jun 16 18:15 . -rw-rw-r--  1 ubuntu ubuntu    0 Jun 16 18:14 tmplock  I can't find any information on if this is related to the sticky bit, or an underlying Linux kernel change, or anything. Does anyone know what can explain the change in behavior? How to add a WiX custom action that happens only on uninstall (via MSI)? I would like to modify an MSI installer (created through ) to delete an entire directory on uninstall.  I understand the RemoveFile and RemoveFolder options in WiX, but these are not robust enough to recursively delete an entire folder that has content created after the installation.  I noticed the similar Stack Overflow question , but I was wondering if this could be done more simply using a call to a batch script to delete the folder.  This is my first time using WiX, and I'm still getting the hang of . What would be a basic example of a custom action that will run a batch script on uninstall? My question isn't how they receive the energy to jump, but why.  When someone views an element's emission spectrum, we see a line spectrum which proves that they don't exist outside of their orbitals (else we would see a continuous spectrum).  Electrons can be released in the form of beta decay, thus proving that they are capable of traveling outside of orbitals contrary to the statement my teacher said that they stay within orbitals. Then, to add to the confusion, the older model of rings floating around a nucleus has, from what I can tell, been outdated, which would support this model. My teacher's explanation was that the electrons made a quantum jump of some kind. How do electrons move between orbitals or do we know how they jump, excluding the reason that energy causes them to jump, and why are positrons formed sometimes instead of electrons in Beta decay?  When I'm asking "how do electrons jump" I would like to know how an electron can jump between each orbital such as how it moves and how it knows where to jump since it appears to be a jump where the electron doesn't slow into a orbital position. Specifically how they jump what is this Atomic electron transition, I understand that they jump and that they do this through absorbing and releasing energy but what is this Atomic electron transition other than what is already on the wikipedia article . Extrusions causing problems in edit mode When I extruded vertices in edit mode, for some reason one of the sides of my 3-D model (the textured-looking side to the right) is creating a lot of errors. First off, it automatically sets extrusions on the x-axis. Secondly, it doesn't allow me to extrude planes into 3-D shapes. Thirdly, I can't increase the height of vertices without it creating a new face. Finally, it renders those automatic textures to create a grainy black texture in render mode. I attached an image with the solid object (top) and the rendered object (bottom). Note: I did not set any textures or alter the lighting on the model. Also, the left gray side is working perfectly fine without errors. How can I wake-up a PC using a command? (i.e. equivalent to moving a mouse, etc) It doesn't seem like this would be very difficult, but how can I wake-up a PC by doing the equivalent of moving a mouse or pressing keys on a keyboard?  My PC is running Windows 10 and I only have the monitors enter sleep mode after 15 minutes.  The rest of the PC is still awake and doesn't use hibernate, etc.  I'm trying to use EventGhost to receive a TCP/IP command that tells the PC to wake up the displays but it's proving quite difficult. So I need to compress a directory with max compression.   How can I do it with xz? I mean I will need tar too because I can't compress a directory with only xz. Is there a oneliner to produce e.g. foo.tar.xz? Code: \documentclass[12pt]{article} \usepackage{pgfplots} \usepackage{float} \pgfplotsset{compat=1.17} \usepackage{tikz} \usetikzlibrary{shapes, arrows.meta, automata, positioning, matrix, calc} \usepackage[RPvoltages, american,siunitx]{circuitikz} \usepackage[margin=1in]{geometry}  \usepackage{steinmetz} \begin{document}         \begin{figure}[H]         \centering         \begin{circuitikz}             \draw(0,0) to[V = $\vec{V}_g$] ++(0, 3) to[R = 50 &lt;\ohm&gt;] ++(3, 0) to[C = 1&lt;\micro\farad&gt;, v = $\vec{V}_o$] ++(0, -3) to[short] ++(-3, 0);         \end{circuitikz}     \end{figure} \end{document}  Output:  As we can see, $\vec{V}_o$ is almost touching the capacitor. How to adjust the spacing for the voltage label? Actually, can  potentially solve the problem? Note that what I am trying to draw is based off of this: Penguin Brainteaser : 321-avoiding permutations There are $k$ penguins, $k\ge 3$. They are all different heights. How many ways are there to order the penguins in a line, left to right, so that we cannot find any three that are arranged tallest to shortest (in left to right order)? The penguin triples do not have have to be adjacent.  This problem is courtesy of someone I know only as "DaMancha." Increasing extent of Raster? How to completely disable Siri on Sierra?