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• Filter data in sheets from a master sheet

  - by sam

  I have a 'master sheet' with lots of furniture data in it, in column A there are the suppliers names. What I would like is to be able to have my master sheet with all the info and then sub sheets named by supplier; in these sub sheets I would like to reference the master sheet and pull out all of the items that are from that supplier. For example: I would have a sheet called 'Ikea' which would look in the master sheet and search the A column for all entries of 'Ikea'. If present, copy or reference that row 1:12 in the 'ikea' sheet. I would like to do it all dynamically using references rather than copying the data. Also, I would like it to auto update rather than having to run a macro to recalculate it each time. Can this be done with formulars rather than macros?

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• Estimate angle to launch missile, maths question

  - by Jonathan

  I've been working on this for an hour or two now and my maths really isn't my strong suit which is definitely not a good thing for a game programmer but that shouldn't stop me enjoying a hobby surely? After a few failed attempts I was hoping someone else out there could help so here's the situation. I'm trying to implement a bit of faked intelligence when the A.I fires it's missiles at a target in a 2D game world. By predicting the likely position the target will be in given it's current velocity and the time it will take the missile to reach it's target. I created an image to demonstrate my thinking: http://i.imgur.com/SFmU3.png which also contains the logic I use for accelerating the missile after launch. The ship that fires the missile can fire within a total of 40 degree angle, 20 either side of itself, but this could likely become variable. My current attempt was to break the space between the two lines into segments which match the targets width. Then calculate the time it would take the missile to get to that location using the formula. So for each iteration of this we total up the values and that tells us the distance travelled, ad it would then just need compared to distance to the segment. startVelocity * ((startVelocity * acceleration)^(currentframe-1) So for example. If we start at a velocity of 1f/frame with an acceleration of 0.1f the formula, at frame 4, would be 1 * (1.1^3) = 1.331 But I quickly realized I was getting lost when trying to put this into practice. Does this seem like a correct starting point or am I going completely the wrong way about it? Any pointers would help me greatly. Maths really isn't my strong suit so I get easily lost in these matters and don't even really know a good phrase to search for with this. So I guess in summary my question is more about the correct way to approach this problem and any additional code samples on top of that would be great but I'm not averse to working out the complete code from helpful pointers.

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• Filtering serial port io

  - by mr odus

  I am currently working on a project where I communicate with hardware via a com port on its respective pc(win xp or 7) It is a fairly large project and sifting through the log file can be a bit of pain. This is my current setup. I use putty to do the actual serial communication, and write it to a log file. Then using MinGW Msys I filter it using tail -f "puttyLog" | grep -i "search term" Is there a better way to do this? I mean specifically filtering the input in realtime. Not that mine is terrible, but it still involves having to read from a log and sometimes there have been hangups where it will be delayed for a minute or 2. I have used software in the past with a main io window and then internal filter panels, but can no longer remember or find it.

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• Connecting/Adding a private network on windows server 2008

  - by WhyMe

  Hey all, I have a dual server configuration on a host provider using VPS. I was told by my Host provider that in order to use free bandwidth between my two servers (they are in the same location) I need to add a alias "subnet" to a specific ip (A private network, VPN). How do I add an aliased ip in widnwos? in Linux the relevant command is supposed to be (By my search in blogs) "ifconfig eth0:1 10.129.175.165 netmask 255.255.255.0" They also said that another way to connect between the servers (should also be faster) is to use "private lan", but as it happens I don't know how to define one :(. Is there a windows equivalent or another way to do this? I have checked my ip config and found no indication of the private lan or the VPN ip.

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• Intel RAID0 on Windows 8 not Displaying Correct Media Type

  - by kobaltz

  I have my primary C Drive which consists of 2 Intel 120GB SSD Drives in a RAID0. I have a clean install of Windows 8 Pro, latest MEI software, latest RST software, latest Intel Toolbox. Prior to this I had installed Windows 8 Pro as an upgrade. When I went into the Optimize Drives while in the Upgrade installation, it showed the Media Types as Solid State Drives. However, now since I am in a brand new install, it is showing the Media Type as Hard Disk Drive. I am worried about this because of the trim not working properly. Before when in the upgrade, it showed SSD as the media type and the Optimize option would perform a manual trim. Unfortunately, my search credentials on Google are so common to many other things (ie Raid0, SSD, Windows 8, Media Type) that all I am finding are useless topics. Before, (found on random site) it showed the Media Type as below

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• VIM is great for text. Is there, too, an efficient, mouseless way to manipulate files on OS X?

  - by Dokkat

  I am having trouble navigating through files on OS X. That is, creating files, copying, moving, and so on. I am currently using the Finder, but the act of clicking with the mouse is not very efficient. Acessing a deep folder takes a considerable amount of time and you'll have to know it's entire path. When I try to use the command line it is even worse. Going to a folder requires at least typing it's entire path with the 'cd' command; and, when you are there, you don't have full control over it. For example, how would you move 3 specific files to another folder? Some text editors offer a 'fuzzy search' function that allows a very fast form of jumping through files. What is a fast, efficient way to navigate through files on OS X?

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• Moving characters on a grid [on hold]

  - by madmax1

  i am developing my first game with C++. My game uses a grid of rectangles. I have a class Board which manages the grid as a whole, initializes the terrain, places/removes characters, etc. It has a 2D vector of a class Field, which handles the Structure of the field, contained Objects, Characters, etc. Field again contains a vector of class Character, which are positioned on the field. Now i want to implement the functionality to move a character on the board, however dont know which is best practice to do so. Should i implement a moveCharacter(character, offset) function in Board, make it search for the character and move it? Or should i implement a function move(offset) in Character? This sure would be nicest, however makes characters necessary to know the board they are on, or the field which in turn knows the board. On the one hand i feel like i should avoid inclusion between classes as much as possible e.g. to increase portability of classes for different projects, on the other hand i think the character.move() functionality is most comfortable for further development. Im pretty new to "bigger" C++ projects and these kind of design questions pop up more and more often lately and i have troubles deciding. Thanks a lot for any advice!

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• How can I control wireless networks in Ubuntu without Network-Manager?

  - by Solignis

  Hi there, I recently installed Ubuntu on a laptop I got. I was having issues with the network manager just like I was having in my VM where it was not setting up the hostname correctly. Anyhow now I have a problem, since it is a laptop it will be moving.... But I have no way to discover new wireless networks. Anyway I can gain that functionality back? The problem I am running into is that I need to set the DNS search and domain for the machine so I can access my network but the network-manager was overriding the settings. Any help would be much appreciated.

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• What are some internet trends that you've noticed over the past ~10 years? [closed]

  - by Michael

  I'll give an example of one that I've noticed: the number of web sites that ask for your email address (GOOG ID, YAHOO! ID, etc.) has skyrocketed. I can come up with no legitimate reason for this other than (1) password reset [other ways to do this], or (2) to remind you that you have an account there, based upon the time of your last visit. Why does a web site need to know your email address (Google ID, etc.) if all you want to do is... download a file (no legit reason whatsoever) play a game (no legit reason whatsoever) take an IQ test or search a database (no legit reason whatsoever) watch a video or view a picture (no legit reason whatsoever) read a forum (no legit reason whatsoever) post on a forum (mildly legit reason: password reset) newsletter (only difference between a newsletter and a blog is that you're more likely to forget about the web site than you are to forget about your email address -- the majority of web sites do not send out newsletters, however, so this can't be the justification) post twitter messages or other instant messaging (mildly legit reason: password reset) buy something (mildly legit reasons: password reset + giving you a copy of a receipt that they can't delete, as receipts stored on their server can be deleted) On the other hand, I can think of plenty of very shady reasons for asking for this information: so the NSA, CIA, FBI, etc. can very easily track what you do by reading your email or asking GOOG, etc. what sites you used your GOOG ID at to use the password that you provide for your account in order to get into your email account (most people use the same password for all of their accounts), find all of your other accounts in your inbox, and then get into all of those accounts sell your email address to spammers These reasons, I believe, are why you are constantly asked to provide your email address. I can come up with no other explanations whatsoever. Question 1: Can anyone think of any legitimate or illegitimate reasons for asking for someone's email address? Question 2: What are some other interesting internet trends of the past ~10 years?

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• LDAP ACI Debugging

  - by user13332755

  If you've ever wondered which ACI in LDAP is used for a special ADD/DELETE/MODIFY/SEARCH request you need to enable ACI debugging to get details about this. Edit/Modify dse.ldifnsslapd-infolog-area: 128nsslapd-infolog-level: 1ACI Logging will be placed at 'errors' file, looks like: [22/Jun/2011:15:25:08 +0200] - INFORMATION - NSACLPlugin - conn=-1 op=-1 msgId=-1 -  Num of ALLOW Handles:15, DENY handles:0 [22/Jun/2011:15:25:08 +0200] - INFORMATION - NSACLPlugin - conn=-1 op=-1 msgId=-1 -  Processed attr:nswmExtendedUserPrefs for entry:uid=mparis,ou=people,o=vmdomain.tld,o=isp [22/Jun/2011:15:25:08 +0200] - INFORMATION - NSACLPlugin - conn=-1 op=-1 msgId=-1 -  Evaluating ALLOW aci index:33 [22/Jun/2011:15:25:08 +0200] - INFORMATION - NSACLPlugin - conn=-1 op=-1 msgId=-1 -  ALLOW:Found READ ALLOW in cache [22/Jun/2011:15:25:08 +0200] - INFORMATION - NSACLPlugin - conn=-1 op=-1 msgId=-1 -  acl_summary(main): access_allowed(read) on entry/attr(uid=mparis,ou=people,o=vmdomain.tld,o=isp, nswmExtendedUserPrefs) to (uid=msg-admin-redzone.vmdomain.tld-20100927093314,ou=people,o=vmdomain.tld,o=isp) (not proxied) (reason: result cached allow , deciding_aci  "DA anonymous access rights", index 33)

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• exception occurred for backend host '127.0.0.1/7001/7001': 'CONNECTION_REFUSED [os error=0, line 1715 of URL.cpp]: Error connecting to host 127.0.0.1:7001'

  - by Vijaya Moderator -Oracle

  When you hit the WLS Server via Proxy server, we may get the issue like below... [09/Jun/2014:06:05:50] failure ( 3284): for host 127.0.0.1 trying to GET /.../soundlink_wireless_​speaker/index.jsp, wl-proxy reports: exception occurred for backend host '127.0.0.1/7001/0': 'PROTOCOL_ERROR [line 835 of URL.cpp]: Backend Server not responding' [09/Jun/2014:06:05:50] failure ( 3284): for host 127.0.0.1 trying to GET /.../soundlink_wireless_​speaker/index.jsp, wl-proxy reports: exception occurred for backend host '127.0.0.1/7001/0': 'PROTOCOL_ERROR [line 835 of URL.cpp]: Backend Server not responding' [09/Jun/2014:06:05:51] failure ( 3284): for host 127.0.0.1 trying to GET /.../soundlink_wireless_​speaker/index.jsp, wl-proxy reports: exception occurred for backend host '127.0.0.1/7001/7001': 'CONNECTION_REFUSED [os error=0, line 1715 of URL.cpp]: Error connecting to host 127.0.0.1:7001' To solve the issue 1.  Check if there is any issue at the firewall by executing the below command     telnet 127.0.0.1 7001 2.  Also access  using the hostname instead of IP Address  If it errors out like below   Microsoft Telnet> o 127.0.0.1 7001 connecting to 127.0.0.1  Warning thrown at weblogic console: <BEA-000449> <Closing socket as no data read from it on 127.0.0.1:54,356 during the configured idle timeout of 5 secs>  Test the same again by disabling the firewall. Below are the steps... 1)Go to Start ----> Run  2)Type services.msc  3)In services.msc search for "Windows Firewall" and Right Click on "Windows Firewall"---->Select Stop. 4)Access the Weblogic URL  If the issue is resolved after disabling firewall, Request your  OS System Admin to open the port 7001 at the firewall end to access the application

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• Is it better to specialize in a single field I like, or expand into other fields to broaden my horizons?

  - by Oak

  This is a dilemma about which I have been thinking for quite a while. I'm a graduate student and my topics of interest are programming language design, code analysis, compilation, etc. So far, this field has been very interesting and rewarding for me, so I was thinking about finding a job in that field and continuing to specialize in it. I feel like it's a relatively solid field which won't "get out of style" anytime soon. I've always thought that in such complex fields it's better to be a real expert than just another guy who superficially understand what the experts are talking about. On the other hand, I feel that by specializing this way I really limit my future option. I have always been a strong believer in multidisciplinary approaches to problems. Maybe I should go search for a general programming job in which I could gain experience in other fields, as well as occasionally apply my favorite field for solving problems. Specializing in only one or two fields can prevent me from thinking outside the box and cause stagnation. I would really like to hear more opinions about this choice. The truth is I'm already leaning towards one of the choices, so basic psychology says nothing will change my mind, but I would still love to hear some feedback.

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• Most efficient Implementation a Tree in C++

  - by Topo

  I need to write a tree where each element may have any number of child elements, and because of this each branch of the tree may have any length. The tree is only going to receive elements at first and then it is going to use exclusively for iterating though it's branches in no specific order. The tree will have several million elements and must be fast but also memory efficient. My plan makes a node class to store the elements and the pointers to its children. When the tree is fully constructed, it would be transformed it to an array or something faster and if possible, loaded to the processor's cache. Construction and the search on the tree are two different problems. Can I focus on how to solve each problem on the best way individually? The construction of has to be as fast as possible but it can use memory as it pleases. Then the transformation into a format that give us speed when iterating the tree's branches. This should preferably be an array to avoid going back and forth from RAM to cache in each element of the tree. So the real question is which is the structure to implement a tree to maximize insert speed, how can I transform it to a structure that gives me the best speed and memory?

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• Local dedicated hosting space (own hardware)

  - by Scott

  Where can I find local dedicated hosting space for my own hardware? I know I can rent dedicated hosting from various companies online, but usually I think that means I'm renting their hardware too. I just need a space with a network connection and a power outlet. That's it. How much would this cost? What would I search for? Is it available easily? Or would it only be the sort of thing huge companies would do? I'm in the greater NYC area. It's for a project I'm working on, but the thing's loud and annoying. I'd be willing to pay a little to get it out of sight and out of mind. I don't even care too much about the quality of the network connection. I'd rather not rent other people's hardware cause it probably would cost a fortune to rent a machine like this (tons of ram).

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• Lucene best practice

  - by Dragos

  I am trying to understand how Lucene should be used. From what I have read, creating an IndexReader is costly, so using a Search Manager shoulg be the right choice. However, a SearchManager should be produced by a NRTManager(which, by the way, should replace the IndexWriter for every add or delete operation performed). But in order to have a NRTManager, I should first have an IndexWriter, and here comes my problem. The documentation says: an IndexWriter is thread-safe the constructor of this class takes a Directory object, so it seems creating an instace should be costly(as in the case of an IndexReader) all changes are buffered and flushed periodically(so they seem to encourage using a single instance) but: the changes, although flushed will only be visible after commit or close after finished making updates(add/delete), the instance should be closed I also found this: http://stackoverflow.com/questions/5374419/forgot-to-close-the-lucene-indexwriter-after-adding-documents-to-the-index where it is said that not closing a writer might ruin everything So what am I really supposed to do? Is having a single IndexWriter instance a good idea(make only commit and never close it)? EDIT: What is more, if I use NRTManager, how can I make acommit`? Is it even possible?

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• Adding cygwin on right click on windows explorer

  - by PushpRaj

  I wish to add a command on right click menu in explorer that opens current directory with cygwin. For same I have successfully added these registries: [HKEY_CURRENT_USER\software\classes\directory\shell\cygwin] @="c:\\cygwin\\bin\\bash.exe --login -i -c \"cd '%1'; bash\"" [HKEY_CURRENT_USER\software\classes\drive\shell\cygwin] @="c:\\cygwin\\bin\\bash.exe --login -i -c \"cd '%1'; bash\"" but this adds the command only when on some folder or drive. I want generic right click on explorer, on which, search gives me this registry to edit: [HKEY_CLASSES_ROOT\Directory\Background\shell\cygwin] @="c:\\cygwin\\bin\\bash.exe --login -i -c \"cd '%1'; bash\"" My problem lies with the value of the key, which doesnt work on %1 but on some static value like /cygdrive/c Could someone please tell me the proper way to pass current directory to the command, also please refer me some basic and advanced pages for same. Thank you.

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• 301 redirect, canonical question

  - by Dave

  I've designed my own 'latest news' page for my site - and I'm trying to keep the URL's clean. (eg) It should look like this : http://www.domain.com/21/this-is-a-clean-url/ When someone links to the article, they sometimes mess it up and do : http://www.domain.com/21/this-is-a-clean-url/#random-hash-tag So what I have been doing is looking for "http://www.domain.com/21" and 301 (moved permantly) redirecting to the proper url + adding a canonical meta tag for it. Is this going overboard? Should I instead be using a (302 Found) header - and just let the canonical tag tell search engines what the proper URL for the article is? What is the best way of handling this?

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• Is browser and bot whitelisting a practical approach?

  - by Sn3akyP3t3

  With blacklisting it takes plenty of time to monitor events to uncover undesirable behavior and then taking corrective action. I would like to avoid that daily drudgery if possible. I'm thinking whitelisting would be the answer, but I'm unsure if that is a wise approach due to the nature of deny all, allow only a few. Eventually someone out there will be blocked unintentionally is my fear. Even so, whitelisting would also block plenty of undesired traffic to pay per use items such as the Google Custom Search API as well as preserve bandwidth and my sanity. I'm not running Apache, but the idea would be the same I'm assuming. I would essentially be depending on the User Agent identifier to determine who is allowed to visit. I've tried to take into account for accessibility because some web browsers are more geared for those with disabilities although I'm not aware of any specific ones at the moment. The need to not depend on whitelisting alone to keep the site away from harm is fully understood. Other means to protect the site still need to be in place. I intend to have a honeypot, checkbox CAPTCHA, use of OWASP ESAPI, and blacklisting previous known bad IP addresses.

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• Postfix + Cpanel compatibility

  - by Mishari

  I am working on a VPS that has cPanel installed and I wanted to install Postfix on it. However I find that cPanel seems to be quite tightly integrated with Exim. I have done a google search but have only found vague statements that says "cPanel does not support postfix" but I haven't found any authoritative sources in this matter. So my question is, what happens if I disable exim entirely and install postfix instead? Will it break cPanel? Will everything run as normal? Update with more questions: Can I leave Exim for cPanel's internal use and use postfix for everything else? If so, what will happen to dovecot?

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• Windows 7 login automically puts "IIIII....." in password, so it is impossible for me to login?

  - by xaisoft

  I have no idea why this is happening. I have ran multiple malware programs, I have run anti-virus programs, I even restored to an early point in time. The keyboard letter "I" doesn't appear to be stuck, I am using an external keyboard by the way. When I reboot the computer and get to the login screen, when I press ctrl-alt-del to login, it the password textbox starts putting "IIIIIIIIIIII......", it only stops when I bang on the keyboard. I also noticed at one point that my caps lock on turned caps off and caps lock off turned caps on and some other weird behavior. I have tried search online for similar issues, but no luck.

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• Worthless Anti-Spam (What can we learn)

  - by smehaffie

  I recently can across a site that had a “anti-spam” field at the bottom of the entry from.  The first issue I had with it was that at 1280X800 you could not read the value you were suppose to enter (see below).  You tell me, should you enter div, dlv, piv, or plv. But even worse than not being readable at high resolutions is the fact that the programmer who coded it really did not understand what this was used for.  An anti-spam (aka: catpcha) entry field should not be able to be read by looking at the HTML DOM object (so entry of value cannot be scripted).  In this case the value is simply a disabled text input filed that has the value you need to type.  So a hacker would simply need to search for text input field named “spam2” and then they could flood the site with spam. 1: <td> 2: <label> 3: <input name="spam1" type="text" class="small" id="spam1" size="6" maxlength="3" /> 4: <input name="spam2" type="text" class="small" id="spam2" value="plv" 5: disabled="disabled" size="6" maxlength="3" /> 6: * <span class="small">- Anti-SPAM key - please enter matching value</span> 7: </label> 8: </td>   There are some things to learn from this example: 1) Always make sure you understand why you are coding a feature/function for any program you write.  Just following the requirements without realizing the “why” will sooner or later come back to bite you.  I think the above example appears to be an example of this. 2) Always check how the screen appears in different resolutions.  In this case it was pretty much unreadable in 1280x800, but you could read it in 800X600 (but most people I know do not have their resolution set that low).  Lucky for me I could “View Source” and get the value I needed to enter.

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• Windows 8 store freezes when searching for updates

  - by Roger

  I'm running Windows 8 Pro (x64) on my home desktop. Everything is working well (very very differently, but well) except for the Store application. Several days ago, I got an update notification that listed 8 application updates. I hit the link to install the updates, but only six of them installed. Now I have Updates(2) showing in the store's notification area, and whenever I try to look for the updates the Store goes into "searching" mode (the circles/dots animation) and never finishes the search. Is there any way that I can reset the Store app? I have tried re-downloading it with no success.

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• How to block spam site republishing my content

  - by Fo.

  I noticed today that Google search results shows some spam copies of one of my sites. The url looks something like this: http://[subdomain].spamsite.com/www.example.com ...where example.com is my site. In my Apache access logs I'm noticing several lines like the following whenever I load the above url: 127.0.0.1 - - [219/Oct/2012:19:27:34 +0000] "OPTIONS * HTTP/1.0" 200 - "-" "Apache (internal dummy connection)" The spammer's site shows an exact up to date copy of my site, so I think they are pulling in live data. Any idea how I can block this traffic?

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• Set preferred language in Chrome and other Google services

  - by Super Chicken

  Whenever I'm abroad and access Google's search (via Chrome browser, on my own laptop) or other Google services, they are presented to me in the local language. How can I get Google services displayed in English and instruct Chrome to use google.com (instead of the country-specific site)? My language setting in Windows is English, so Chrome should already use this by default, and I've also set my language preference in iGoogle to English (U.S.), yet if I'm in France, for example, my searches take place on google.fr and sites like the Google News are in French. Chrome tries to be helpful by suggesting to translate these pages for me, but it would be far better to direct to the original English version of these sites in the first place. How do I fix this?

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• Need a good quality bitmap rotation algorithm for Android

  - by Lumis

  I am creating a kaleidoscopic effect on an android tablet. I am using the code below to rotate a slice of an image, but as you can see in the image when rotating a bitmap 60 degrees it distorts it quite a lot (red rectangles) – it is smudging the image! I have set dither and anti-alias flags but it does not help much. I think it is just not a very sophisticated bitmap rotation algorithm. canvas.save(); canvas.rotate(angle, screenW/2, screenH/2); canvas.drawBitmap(picSlice, screenW/2, screenH/2, pOutput); canvas.restore(); So I wonder if you can help me find a better way to rotate a bitmap. It does not have to be fast, because I intend to use a high quality rotation only when I want to save the screen to the SD card - I would redraw the screen in memory before saving. Do you know any comprehensible or replicable algorithm for bitmap rotation that I could programme or use as a library? Or any other suggestion? EDIT: The answers below made me think if Android OS had bilinear or bicubic interpolation option and after some search I found that it does have its own version of it called FilterBitmap. After applying it to my paint pOutput.setFilterBitmap(true); I get much better result

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