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• Convert wide to long format in R

  - by Anthony

  My data has a long format similar to the one below: ID Language MotherTongue SpokenatHome HomeLang 1 English English English 1 French French 1 Polish Polish 2 Lebanese Lebanese Lebanese Labanese 2 Arabic Arabbic Here is the output I am looking for: ID Language1 Language2 Language 3 MotherTongue1 MotherTongue2 SpokenatHome1 HomeLan 1 English French Polish English Polish French English 2 Lebanese Arabic Labanese Arabic I'm using using the melt and dcast functions of the reshape2 package, but it does not work. Does anyone know how to do this? Thanks. df<-df[,c("OEN", "Langugae","MotherTongue", "SpokenatHome", "MainHomeLanguage")] dfl <- melt(df, id.vars=c("OEN", "Langugae"), measure.vars=c("MotherTongue", "SpokenatHome", "MainHomeLanguage"), variable.name="Language") dfw <- dcast(dfl, OEN ~ Langugae , value.var="value" )

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• From comma separated list to individual item result set. *mysql

  - by Raziel

  I'm doing some data migration from a horribly designed database to a less horribly designed database. There is a many to many relationship that has a primary key in one table that corresponds to a comma separated list in another. FK_ID | data ------------- 1,2 | foo 3 | bar 1,3,2 | blarg Is there a way to output the FK_ID field with each comma separated element as a single line in the result set? result set FK_ID | data ------------- 1 | foo 2 | foo 3 | bar 1 | blarg 2 | blarg 3 | blarg I'm thinking this would require some sort of recursive query which I don't think mysql has. Thanks in advance.

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• The xml is not switching when device orientation change

  - by Labeeb P

  Hi, I have made two folders, res/layout and res/layout-land The output i got If I start the application in portrait mode, it will always use the xml in layout folder if the application run in portrait mode. And will not use xml in layout-land if i change the device to landscape mode If it start in landscape mode it only use the xml in layout-land The xml is not switching when the orientation change What i expect was It should use the xml in layout folder while it is in portrait mode and use the xml in layout-land while in landscape mode In the Manifest file i have added android:configChanges="orientation" for the activity and <supports-screens android:resizeable="true" android:largeScreens="true" android:normalScreens="true" android:anyDensity="true" /> Did i missed any thing here? What changes i need to do here? Thank You

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• Computer Vision Website Image Slideshow help

  - by msandbot

  Hi, I'm making an online display of the output of a computer vision algorithm. After running the algorithm I am left with a folder of about 1000 16 bit .tiff files. I need to put those on the website in a list for so that the researchers can click through and find the list. Also there needs to be an image frame with an "animated gif" feel that can be started stopped and played in reverse. Any ideas on the best way to do this? What language to use? I made a simple website in Ruby on Rails but I don't know if it has the capabilities to do what I require.

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• Using exponential smoothing with NaN values

  - by Eric

  I have a sample of some kind that can create somewhat noisy output. The sample is the result of some image processing from a camera, which indicates the heading of a blob of a certain color. It is an angle from around -45° to +45°, or a NaN, which means that the blob is not actually in view. In order to combat the noisy data, I felt that exponential smoothing would do the trick. However, I'm not sure how to handle the NaN values. On the one hand, involving them in the math would result in a NaN average, which would then prevent any meaningful results. On the other hand, ignoring NaN values completely would mean that a "no-detection" scenario would never be reported. And just to complicate things, the data is also noisy in that it can get false NaN value, which ideally would be smoothed somehow to prevent random noise. Any ideas about how I could implement such an exponential smoother?

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• Has anyone been successful at a assembler based led blinker for an xcore?

  - by dwelch

  I am liking the http://www.xmos.com chips but want to get a lower level understanding of what is going on. Basically assembler. I am trying to sort out something as simple as an led blinker, set the led, count to N clear the led, count to N, loop forever. Sure I can disassemble a 10 line XC program, but if you have tried that you will see there is a lot of bloat in there that is in every program, what bits are to support the compiler output and what bits are actually setting up the gpio?

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• Automatic upload of 10KB file to web service?

  - by Joseph Turian

  I am writing an application, similar to Seti@Home, that allows users to run processing on their home machine, and then upload the result to the central server. However, the final result is maybe a 10K binary file. (Processing to achieve this output is several hours.) What is the simplest reliable automatic method to upload this file to the central server? What do I need to do server-side to prevent blocking? Perhaps having the client send mail is simple and reliable? NB the client program is currently written in Python, if that matters.

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• Serializing JSON string to object

  - by user1476075

  I am trying to parse through a JSON string and convert it to the following POJO: package apicall; //POJO representation of OAuthAccessToken public class OAuthAccessToken { private String tokenType; private String tokenValue; public OAuthAccessToken(String tokenType,String tokenValue) { this.tokenType=tokenType; this.tokenValue=tokenValue; } public String toString() { return "tokenType="+tokenType+"\ntokenValue="+tokenValue; } public String getTokenValue() { return tokenValue; } public String getTokenType() { return tokenType; } } In order to do this I have written the following code: Gson gson=new Gson(); String responseJSONString="{\"access_token\" : \"2YotnFZFEjr1zCsicMWpAA\",\"token_type\" : \"bearer\"}"; OAuthAccessToken token=gson.fromJson(responseJSONString, OAuthAccessToken.class); System.out.println(token); When I run the code, I get the following output: tokenType=null tokenValue=null Instead of tokenType=bearer tokenValue=2YotnFZFEjr1zCsicMWpAA I dont understand if there's anything I've done wrong. Please help.

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• Markdown to text/plain and text/html for multipart email

  - by fphilipe

  I’m looking for a solution to send DRY multipart emails in Rails. With DRY I mean that the content for the mail is only defined once. I’ve thought about some possible solutions but haven’t found any existing implementations. The solutions I’ve thought about are: load the text from I18n and apply Markdown for the html mail and apply Markdown with a special output type for the text mail where links are put in parenthesis after the link text bold, italic and other formatting that doesn't make sense are removed ordered and unordered lists are maintained generate only the html mail and convert that to text according to the above conditions Is there any available solution out there? Which one is probably the better way to do it?

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• Where would async calls make sense in an ASP.net (MVC) Web Application?

  - by Michael Stum

  I'm just wondering, if I have an ASP.net Web Application, either WebForms or MVC, is there any situation where doing stuff asynchronously would make sense? The Web Server already handles threading for me in that it spins up multiple threads to handle requests, and most request processing is rather simple and straight forward. I see some use for when stuff truly is a) expensive and b) can be parallelized. but these are the minority cases (at least from what I've encountered). Is there any gain from async in the simple "Read some input, do some CRUD, display some output" scenario?

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• Excel Spreadsheet - Best way to perform an Oracle Query on a cell

  - by Jamie

  Hi there, I have an Excel Spreadsheeet. There is a cell containing a concatenated name and surname (don't ask why), for example: Cell A2 BLOGGSJOE On this cell, I would like to run the following SQL and output it to cell A3, A4 and A5 SELECT i.id, i.forename, i.surname FROM individual i WHERE UPPER(REPLACE('" & A2 & "', ' ', '')) = UPPER(REPLACE(i.surname|| i.forename, ' ', '')) AND NVL(i.ind_efface, 'N') = 'N' Any idea how I could perform an oracle query on each cell and return the result? I have enabled an oracle datasource connection in Excel, just not sure what to do now. Is this a stupid approach, and can you recommend a better more proficient way? Thanks muchly! I lack the necessary experience in this type of thing! :-) EDIT: I am aware that I could just write a simple ruby/php/python/whatever script to loop through the excel spreadsheet (or csv file), and then perform the query etc. but i thought there might be a quick way in excel itself.

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• gMaps suddenly stopped working : Can't find variable: G_NORMAL_MAP

  - by Luca

  hello! i inject a map on my div called "concessionario-map" with GMap, a jquery plugin. Gmap everything works fine until this morning. now the debugger says: ReferenceError: Can't find variable: G_NORMAL_MAP i just search on google and i read some similar situation, but i dont find a case like mine. please, can you help me? thanks a lot in advance :) (full code) $.getJSON("http://maps.google.com/maps/geo?q="+loc+"&key=ABQIAAAAgDXoBEgIn38xaRBBqo6ygxTDjF32IQ1zA0BVcGSuGouGRvo0kRRKiyipbCniJWSso2scatdz36K-Mg&sensor=false&output=json&callback=?",function(data, textStatus) { long = data.Placemark[0].Point.coordinates[0]; lat = data.Placemark[0].Point.coordinates[1]; console.log(data); $('#concessionario-map').gMap( { scrollwheel: false, latitude: lat, longitude: long, zoom: 15, markers: [{ latitude: lat, longitude: long }], icon: { image: "files/images/gmap_pin_orange.png", shadow: "files/images/gmap_pin_orange_shadow.png", iconsize: [26, 46], shadowsize: [28, 48], iconanchor: [12,46], infowindowanchor: [12, 0] } }) });

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• retrieve columns from sqlite3

  - by John Smith

  I have two tables in sqlite: CREATE TABLE fruit ('fid' integer, 'name' text); CREATE TABLE basket ('fid1' integer, 'fid2' integer, 'c1' integer, 'c2' integer); basket is supposed to have count c1 of fruit fid1 and c2 of fruit fid2 I created a view fruitbasket; create view fruitbasket as select * from basket inner join fruit a on a.fid=basket.fid1 inner join fruit b on b.fid=basket.fid2; it works (almost) as expected. When I type pragma table_info(fruitbasket); I get the following output 0|fid1|integer|0||0 1|fid2|integer|0||0 2|c1|integer|0||0 3|c2|integer|0||0 4|fid|integer|0||0 5|name|text|0||0 6|fid:1|integer|0||0 7|name:1|text|0||0 The problem is that I cannot seem to SELECT name:1. How can I do it other than going back and re-aliasing the columns?

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• How to split up a long list using \n

  - by pypy

  Here is a long string that I convert to a list so I can manipulate it, and then join it back together. I am having some trouble being able to have an iterator go through the list and when the iterator reach, let us say every 5th object, it should insert a '\n' right there. Here is an example: string = "Hello my name is Josh I like pizza and python I need this string to be really really long" string = string.split() # do the magic here string = ' '.join(string) print(string) Output: Hello my name is Josh I like pizza and python I need this string to be really really long Any idea how i can achieve this? I tried using: for words in string: if words % 5 == 0: string.append('\n') but it doesn't work. What am I missing?

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• Perl code -need some understanding.

  - by benjamin button

  Hi i have a perl code below: foreach (@tmp_cycledef) { chomp; my ($cycle_code, $close_day, $first_date) = split(/\|/, $_,3); $cycle_code =~ s/^\s*(\S*(?:\s+\S+)*)\s*$/$1/; $close_day =~ s/^\s*(\S*(?:\s+\S+)*)\s*$/$1/; $first_date =~ s/^\s*(\S*(?:\s+\S+)*)\s*$/$1/; #print "$cycle_code, $close_day, $first_date\n"; $cycledef{$cycle_code} = [ $close_day, split(/-/,$first_date) ]; } the value of tmp_cycledef comes from output of an sql query: select cycle_code,cycle_close_day,to_char(cycle_first_date,'YYYY-MM-DD') from cycle_definition d order by cycle_code; can anybody tell me what exactly is happening inside the for loop? thanks in advance.

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• Sending a 'copy' command in cocoa

  - by Ben Packard

  Is there any way to send a copy (command-c) instruction without using a cgEvent to mimic the keystrokes? I don't have access to the text field in the application I want to take text from, so need to replicate manually copying to the clipboard, and there seemss to be a bug with cgevent posting. According the Quartz documentation, to type a capital Z I should use: CGEventRef event1, event2, event3, event4; event1 = CGEventCreateKeyboardEvent (NULL, (CGKeyCode)56, true); event2 = CGEventCreateKeyboardEvent (NULL, (CGKeyCode)6, true); event3 = CGEventCreateKeyboardEvent (NULL, (CGKeyCode)6, false); event4 = CGEventCreateKeyboardEvent (NULL, (CGKeyCode)56, false); However, if I attach this set of instuctions to an NSTimer, it only works the first time it is fired. example output: ZzzZzzzzZZzzZ (vs expected ZZZZZZZZZ). How else might I send a copy command to the active window?

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• How do you fix "Too many open files" problem in Hudson?

  - by Randyaa

  We use Hudson as a continuous integration system to execute automated builds (nightly and based on CVS polling) of a lot of our projects. Some projects poll CVS every 15 minutes, some others poll every 5 minutes and some poll every hour. Every few weeks we'll get a build that fails with the following output: FATAL: java.io.IOException: Too many open files java.io.IOException: java.io.IOException: Too many open files at java.lang.UNIXProcess.<init>(UNIXProcess.java:148) The next build always worked (with 0 changes) so we always chalked it up to 2 build jobs being run at the same time and happening to have too many files open during the process. This weekend we had a build fail Friday night (automatic nightly build) with the message and every other nightly build also failed. Somehow this triggered Hudson to continuously build every project which failed until the issue was resolved. This resulted in a build every 30 minutes or so of every project until sometime Saturday night when the issue magically disappeared.

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• Why '.png' files produced by ImageMagick are so much bigger than '.jpg' & '.gif' files?

  - by Nick Gorbikoff

  Hello. I'm using ImageMagick to convert some files from one format to another. I was always under the impression that .png files were supposed to be as big/small as .jpg if not smaller, and definitely smaller than .gif. However when I run convert photo.jpg photo.png The files I'm getting out is about 6 times bigger than the original jpg. Original jpg is a regular photo about 300x500 px, 52 kb. Output is a proper png of the same dimensions, but size is about 307 kb? Does anyoone know what the hack is going on? Am I doing something wrong? P.S.: I tried both on Debian and Windows with the same results.

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• MySQL - get all unique values of a column, check if has a specific value

  - by gamers2000

  First off - apologies for the poor title, I have no idea how to describe it in a one-liner. I have a table - snippet is below. mysql> select * from playlistfiles; +-----------------------+--------------+-----------+ | FileName | PlaylistName | FileIndex | +-----------------------+--------------+-----------+ | File1 | Image1 | 0 | | File1 | Video1 | 2 | | File2 | Video1 | 0 | | File3 | Video1 | 1 | | File4 | Image1 | 1 | | File4 | Video1 | 3 | +-----------------------+--------------+-----------+ 6 rows in set (0.00 sec) What I need to do is to get all the FileNames and whether the file is in a playlist or not, as well as order them by FileIndex i.e. for the Image1 playlist, the output should be +-----------------------+------------+-----------+ | FileName | InPlaylist | FileIndex | +-----------------------+------------+-----------+ | File1 | 1 | 0 | | File2 | 0 | Null | | File3 | 0 | Null | | File4 | 1 | 1 | +-----------------------+------------+-----------+ and Video1 would be +-----------------------+------------+-----------+ | FileName | InPlaylist | FileIndex | +-----------------------+------------+-----------+ | File2 | 1 | 0 | | File3 | 1 | 1 | | File1 | 1 | 2 | | File4 | 1 | 3 | +-----------------------+------------+-----------+ In short, I need to be able to get all the unique FileNames from the table, and check if it is in a given table and if so, order it by FileIndex.

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• Nothing displaying for Drupal main menu

  - by jonathandey

  I'm trying to output the main_menu in to a custom theme on the page.tpl.php template however nothing is displaying when I add <?php print theme("links", $main_menu) ?> However when I do a var_dump on the $main_menu I get array(2) { ["menu-218"]=> array(2) { ["href"]=> string(7) "" ["title"]=> string(4) "Home" } ["menu-335"]=> array(2) { ["href"]=> string(6) "node/1" ["title"]=> string(4) "Home" } } What might I be doing wrong? I'm new to Drupal so be kind please :D

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• I need to do a BASICE For Loop algorithm for a java Pyramid

  - by user1665119

  Question 2. USE THE FOR LOOP. Design and write an algorithm that will read a single positive number from the keyboard and will then print a pyramid out on the screen. The pyramid will need to be of a height equal in lines to the number inputted by the operator. Your program is not to test for negative numbers, nor is it to cater for them. For your test, use the number 7. If you would like to take the problem further, try 18 and watch what happens. Example input: 4 Example output: 1 121 12321 1234321

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• Permission errors when cropping after taking a photo

  - by CGM

  Hello everybody, I want to take a photo with an Intent on android.provider.MediaStore.ACTION_IMAGE_CAPTURE, next crop the result with: Intent intent = new Intent("com.android.camera.action.CROP"); intent.setClassName("com.android.camera", "com.android.camera.CropImage"); I follow the sugestions made at: Android: Crop an Image after Taking it With Camera with a Fixed Aspect Ratio However when calling the crop activity I get (already checked the LogCat output) a permission error, saying something like: Permission denial on a Intent to access the temporary image created by the camera activity on my SDcard. Can you please suggest a solution for Android 2.2 ? Thank you

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• jQuery .getJSON() Not Parsing All Objects

  - by Brad

  I'm using jQuery's .getJSON function to parse a set of search results from a Google Search Appliance. The search appliance has an xslt stylesheet that returns the results as JSON data, which I validated with both JSONLint and Curious Concept's JSON Formatter. According to FireBug, the full result set is returned from the XMLHTTPRequest, but I tried dumping the data (with jquery.dump.js) and it only ever parses back the first result. It does successfully get all the Google Search Protocol stuff, but it only ever sees one "R" object (or individual result). Has anybody had a similar problem with jQuery's .getJSON? I know it likes to fail silently if the JSON is not valid, but like I said, I validated the results with several validators and it should be good to go. Edit: Clicking this link will show you the JSON results returned for a search for the word "google": http://bigbird.uww.edu/search?client=json_frontend&proxystylesheet=json_frontend&proxyrefresh=1&output=xml_no_dtd&q=google jQuery only retrieves the first "R" object, even though all "R" objects are siblings.

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• SQL aggregation query, grouping by entries in junction table

  - by cm007

  I have TableA in a many-to-many relationship with TableC via TableB. That is, TableA TableB TableC id | val fkeyA | fkeyC id | data I wish the do select sum(val) on TableA, grouping by the relationship(s) to TableC. Every entry in TableA has at least one relationship with TableC. For example, TableA 1 | 25 2 | 30 3 | 50 TableB 1 | 1 1 | 2 2 | 1 2 | 2 2 | 3 3 | 1 3 | 2 should output 75 30 since rows 1 and 3 in Table have the same relationships to TableC, but row 2 in TableA has a different relationship to TableC. How can I write a SQL query for this?

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• The shortest way to convert infix expressions to postfix (RPN) in C

  - by kuszi

  Original formulation is given here (you can try also your program for correctness) . Additional rules: 1. The program should read from standard input and write do standard output. 2. The program should return zero to the calling system/program. 3. The program should compile and run with gcc -O2 -lm -s -fomit-frame-pointer. The challenge has some history: the call for short implementations has been announced at the Polish programming contest blog in September 2009. After the contest, the shortest code was 81 chars long. Later on the second call has been made for even shorter code and after the year matix2267 published his solution in 78 bytes: main(c){read(0,&c,1)?c-41&&main(c-40&&(c%96<27||main(c),putchar(c))):exit(0);} Anyone to make it even shorter or prove this is impossible?

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