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  • Convert scientific notation to decimal notation

    - by Ankur
    There is a similar question on SO which suggests using NumberFormat which is what I have done. I am using the parse() method of NumberFormat. public static void main(String[] args) throws ParseException{ DecToTime dtt = new DecToTime(); dtt.decToTime("1.930000000000E+02"); } public void decToTime(String angle) throws ParseException{ DecimalFormat dform = new DecimalFormat(); //ParsePosition pp = new ParsePosition(13); Number angleAsNumber = dform.parse(angle); System.out.println(angleAsNumber); } The result I get is 1.93 I didn't really expect this to work because 1.930000000000E+02 is a pretty unusual looking number, do I have to do some string parsing first to remove the zeros? Or is there a quick and elegant way?

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  • Python string manipulation

    - by paradox
    I'm trying to split a string into a int list for further processing. But somehow I can't remove certain whitespaces in between elements of the list. The string x is supposed to have a length of 1000 instead of 1019. I tried reading the documentation for python and saw the function strip() for stripping whitespaces from strings. However, it only works for trailing and leading whitespaces. How should I go about removing these whitespaces and also how do I convert a str list to a int list? My code is as follows : import array x = """73167176531330624919225119674426574742355349194934 96983520312774506326239578318016984801869478851843 85861560789112949495459501737958331952853208805511 12540698747158523863050715693290963295227443043557 66896648950445244523161731856403098711121722383113 62229893423380308135336276614282806444486645238749 30358907296290491560440772390713810515859307960866 70172427121883998797908792274921901699720888093776 65727333001053367881220235421809751254540594752243 52584907711670556013604839586446706324415722155397 53697817977846174064955149290862569321978468622482 83972241375657056057490261407972968652414535100474 82166370484403199890008895243450658541227588666881 16427171479924442928230863465674813919123162824586 17866458359124566529476545682848912883142607690042 24219022671055626321111109370544217506941658960408 07198403850962455444362981230987879927244284909188 84580156166097919133875499200524063689912560717606 05886116467109405077541002256983155200055935729725 71636269561882670428252483600823257530420752963450""" y=[] for i in range(0,len(x)): #String is now in a string list if x[i]!='': y.append(x[i]) print(y[i]) print(len(x))

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  • How to create Encryption Key for Encryption Algorithms?

    - by Akash Kava
    I want to use encryption algorithm available in .Net Security namespace, however I am trying to understand how to generate the key, for example AES algorithm needs 256 bits, that 16 bytes key, and some initialization vector, which is also few bytes. Can I use any combination of values in my Key and IV? e.g. all zeros in Key and IV are valid or not? I know the detail of algorithm which does lots of xors, so zero wont serve any good, but are there any restrictions by these algorithms? Or Do I have to generate the key using some program and save it permanently somewhere?

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  • Teradata equivalent of persisted computed column (in SQL Server)

    - by Cade Roux
    We have a few tables with persisted computed columns in SQL Server. Is there an equivalent of this in Teradata? And, if so, what is the syntax and are there any limitations? The particular computed columns I am looking at conform some account numbers by removing leading zeros - an index is also created on this conformed account number: ACCT_NUM_std AS ISNULL(CONVERT(varchar(39), SUBSTRING(LTRIM(RTRIM([ACCT_NUM])), PATINDEX('%[^0]%', LTRIM(RTRIM([ACCT_NUM])) + '.' ), LEN(LTRIM(RTRIM([ACCT_NUM]))) ) ), '' ) PERSISTED With the Teradata TRIM function, the trimming part would be a little simpler: ACCT_NUM_std AS COALESCE(CAST(TRIM(LEADING '0' FROM TRIM(BOTH FROM ACCT_NUM))) AS varchar(39)), '' ) I guess I could just make this a normal column and put the code to standardize the account numbers in all the processes which insert into the table. We did this to put the standardization code in one place.

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  • XML: Having trouble solving this XML error here..

    - by Capsud
    Hi i'm getting these errors Multiple annotations found at this line: - error: Error parsing XML: not well-formed (invalid token) - Content is not allowed in trailing section. on this XML file... <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_enabled="false" android:drawable="@drawable/btn_red"> </item> <item android:state_pressed="true" android:state_enabled="true" android:drawable="@drawable/btn_orange"> </item> <item android:state_focused="true" android:state_enabled="true" android:drawable="@drawable/btn_orange"> </item> <item android:state_enabled="true" android:drawable="@drawable/btn_black"> </item> probably quite simple for you people who know XML. Can you help me please? Thanks.

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  • Reading correctly alphanumeric fields into R

    - by gd047
    A tab-delimited text file, which is actually an export (using bcp) of a database table, is of that form: 102 1 01 e113c 3224.96 12 102 1 01 e185 101127.25 12 102 2 01 e185 176417.90 12 102A 3 01 e185 26261.03 12 I tried to import it in R with a command like data <- read.delim("C:\\test.txt", header = FALSE, sep = "\t") The problem is that the 3rd column which is actually a varchar field (alphanumeric) is mistakenly read as integer (as there are no letters in the entire column) and the leading zeros disappeared. The same thing happened when I imported the data directly from the database, using odbcConnect. Again that column was read as integer. str(data) $ code: int 1 1 1 1 1 1 6 1 1 8 ... How can I import such a dataset in R correctly, so as to be able to safely populate that db table again, after doing some data manipulations?

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  • routing problem in codeigniter

    - by Obay
    I'm new to CodeIgniter and routing. I have a Login controller whose index() loads up a view to enter a username/password. In the view, the form has action="login/authenticate". Login-authenticate() determines if the login is valid or not. If it's valid, redirect('lobby'), if not redirect('login') routes.php: $route['default_controller'] = "login" config.php: $config['base_url'] = "http://localhost/dts/"; $config['index_page'] = "index.php"; The problem is that when i go to http://localhost/dts/ , click login, I am correctly (?) redirected to http://localhost/dts/login/authenticate but the browser says Object not found!. But when I go to http://localhost/dts/index.php/ (with trailing slash), it works correctly (I get redirected to http://localhost/dts/index.php/login/authenticate, and am logged in) I tried removing "index.php" by using a .htaccess: RewriteEngine on RewriteCond $1 !^(index\.php|images|robots\.txt) RewriteRule ^(.*)$ /index.php/$1 [L] and it would no longer open even the http://localhost/dts/ I'm confused.. what's going on?

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  • How to detect if certain characters are at the end of an NSString?

    - by Sheehan Alam
    Let's assume I can have the following strings: "hey @john..." "@john, hello" "@john(hello)" I am tokenizing the string to get every word separated by a space: [myString componentsSeparatedByString:@" "]; My array of tokens now contain: @john... @john, @john(hello) For these cases. How can I make sure only @john is tokenized, while retaining the trailing characters: ... , (hello) Note: I would like to be able to handle all cases of characters at the end of a string. The above are just 3 examples.

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  • Java Date Hibernate cut off time

    - by Vlad
    Hi folks, I have a Date type column in Oracle DB and it contains date and time for sure. But when I'm trying to get data in java application it will return date with bunch of zeros instead of real time. In code it'll be like: SQLQuery sqlQuery = session.createSQLQuery("SELECT table.id, table.date FROM table"); List<Object[]> resultArray = sqlQuery.list(); Date date = (Date)resultArray[1]; If it was 26-feb-2010 17:59:16 in DB I'll get 26-feb-2010 00:00:00 How to get it with time?

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  • I have a having a a matrix index bounds in matlab

    - by Ben Fossen
    I keep getting the error( this is in Matlab) Attempted to access r(0,0); index must be a positive integer or logical. Error in == Romberg at 15 I ran it with Romberg(1.3, 2.19,8) I think the problem is the statment is not logical because I made it positive and still got the same error. anyone got some ideas of what i could do? function Romberg(a, b, n) h = b - a; r = zeros(n,n); for i = 1:n h = h/2; sum1 = 0; for k = 1:2:2^(i) sum1 = sum1 + f(a + k*h); end r(i,0) = (1/2)*r(i-1,0) + (sum1)*h; for j = 1:i r(i,j) = r(i,j-1) + (r(i,j-1) - r(i-1,j-1))/((4^j) - 1); end end disp(r); end function f_of_x = f(x) f_of_x = sin(x)/x; end

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  • YUI Compressor + gzip causes Illegal Character error in jQuery

    - by lo_fye
    When I minify jquery using YUI compressor, it works fine. When I then add gzip compression (and serve this version via mod rewrite), the gzipped version throws this error: illegal character in jquery.min.js on line 1 Line 1 is: ???????M???????????s?8?0???!sz?dKr?=? This results in a "jquery is not defined" error. I am using the following rewrite rules to serve up the gzipped versions: #Check to see if browser can accept gzip files. ReWriteCond %{HTTP:accept-encoding} (gzip.*) #make sure there's no trailing .gz on the url ReWriteCond %{REQUEST_FILENAME} !^.+\.gz$ #check to see if a .gz version of the file exists. RewriteCond %{REQUEST_FILENAME}.gz -f #All conditions met so add .gz to URL filename (invisibly) RewriteRule ^(.+) $1.gz [L] I can't find any references to this happening to anyone else. Thoughts?

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  • How can I use htaccess to protect a subdirectory of codeigniter installation?

    - by Art Peterson
    I have codeigniter installed at the root directory, and would like to have a subdirectory called "test" password protected using htaccess. I keep getting a "404 page not found" no matter what I try. The directory structure is: /public_html /css /images /system (codeigniter directory) /test .htaccess .htaccess .htpasswd index.php The root .htaccess file looks like: RewriteEngine On RewriteBase / Options -Indexes # Removes trailing slashes RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.+)/$ $1 [L,R=301] # Enforce www RewriteCond %{HTTP_HOST} !^(www) [NC] RewriteRule ^(.*)$ http://www.mydomain.com/$1 [L,R=301] #Checks to see if the user is attempting to access a valid file, #such as an image or css document, if this isn't true it sends the #request to index.php RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_URI} !^(.*)test(.*) RewriteRule ^(.*)$ index.php?/$1 [L] The /test/.htaccess file: AuthUserFile /home/dir/.htpasswd AuthName "Protected Area" AuthType Basic <limit GET POST PUT> require user adminuser </limit> I'm not even getting the authentication prompt, just the codeigniter 404 page when I navigate to the url "http://www.mydomain.com/test/". Please advise!

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  • Overflow on UILabels

    - by jkeesh
    I have a table view that I am customizing and I am adding a UILabel as a subview of the contentView, and I want the number of lines to be relatively consistent. I set the numberOfLines property to be 3 so it can't go more than that, but there are still some that overflow onto the 4th line. If it overflows, I want to add a a trailing ... How can I figure out if it overflows? I've tried truncating at different character counts of my string, but since I am using lineBreakMode = UILineBreakModeWordWrap the number of characters doesn't really predict the number of lines. Is there a way to find out the number of lines your UILabel is using?

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  • Write wave files to memory in Java

    - by Cliff
    I'm trying to figure out why my servlet code creates wave files with improper headers. I use: AudioSystem.write( new AudioInputStream( new ByteArrayInputStream(memoryBytes), new AudioFormat(22000, 16, 1, true,false), memoryBytes.length ), AudioFileFormat.Type.WAVE, servletOutputStream ); taking a byte array from memory containing raw PCM samples and a servlet output stream that gets returned to the client. In the result I get a normal wave file but with zeros in the chunk size fields. Is the API broken? I would think that the size could be filled in using the size passed in the audio input stream. But now, after typing this out I'm thinking its not making this info available to the outer write() method on AudioSystem. It seems like the AudioSystem.write call needs a size parameter unless it is able to pull the size from the stream... which wouldn't work with an arbitrary sized stream. Does anyone know how to make this example work?

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  • Mixed alignment with Java Swing's GroupLayout

    - by zigdon
    I'm trying to build a GUI window in my application. What I'm trying to do is have a window, with a few buttons at the top, and a large text area. Something like this: +--------------------------------------------------+ | [button1] [button2] [button3] | | +----------------------------------------------+ | | | text area | | | | | | | | | | | | | | | +----------------------------------------------+ | +--------------------------------------------------+ I'm almost there, using GroupLayout: layout.setHorizontalGroup( layout.createParallelGroup() .addGroup(layout.createSequentialGroup() .addComponent(button1) .addComponent(button2)) .addComponent(closeWindow)) .addComponent(textarea1) ); layout.setVerticalGroup( layout.createSequentialGroup() .addGroup(layout.createParallelGroup() .addComponent(button1) .addComponent(button2) .addComponent(button3)) .addComponent(textarea) ); The problem is that this ends up with button3 aligned to the left, with the other two. I can't seem to figure out how I can specify the alignment on just that one button. I can do GroupLayout.Alignment.TRAILING on the entire button bar, but that hits all 3 buttons, which is also not quite right. So what's the correct approach? Since the alignment only applies for Parallel Groups, I don't think having a HorizontalGroup with two Sequential Groups in it will help? What am I missing?

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  • Checking if language is set in url with regex

    - by Saif Bechan
    I have am working on a multi language file. My urls look something like this: http://www.mydomain.com/en/about/info http://www.mydomain.com/nl/about/info Now I use a small regex script that redirect the user when they use a link without language. The script looks like this: preg_match('~^/[a-z]{2}/~', $_SERVER['REQUEST_URI'] This finds out is there is a language set en|nl|de etc. This works fine on all links except for these: http://www.mydomain.com/en http://www.mydomain.com/nl There is no trailing slash so the regex can not find the given values. Anyone know a fix for this?

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  • How to format output using MATLAB's num2str

    - by Doresoom
    I'm trying to ouput an array of numbers as a string in MATLAB. I know this is easily done using num2str, but I wanted commas followed by a space to separate the numbers, not tabs. The array elements will at most have resolution to the tenths place, but most of them will be integers. Is there a way to format output so that unnecessary trailing zeros are left off? Here's what I've managed to put together: data=[2,3,5.5,4]; datastring=num2str(data,'%.1f, '); datastring=['[',datastring(1:end-1),']'] which gives the output: [2.0, 3.0, 5.5, 4.0] rather than: [2, 3, 5.5, 4] Any suggestions? EDIT: I just realized that I can use strrep to fix this by calling datastring=strrep(datastring,'.0','') but that seems even more kludgey than what I've been doing.

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  • Is there a way to make vim display "virtual characters" before/after regular patterns in the buffer?

    - by Laurence Gonsalves
    Vim has list and listchars options that make vim display "virtual characters" (by which I mean characters that aren't actually in the buffer) in certain situations. For example, you can make trailing spaces look like something else, or add a visible character to represent the newline character. I'd like to be able to enable the display of certain characters either before or after certain regular patterns ((perhaps syntax items). Sort of like syntax highlighting, but instead of just changing the color/styling of characters that are in the buffer, I'd like to display extra characters that aren't in the buffer. For example, I'd like to display a virtual : (colon) after all occurrences of the word "where" that appear at the end of a line. Is this possible, and if so, what is the necessary vimscript to do it?

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  • Learn mp3 format and audio signal processing

    - by Shankhoneer Chakrovarty
    I am trying to learn the following things: How mp3 file looks like internally? I found this: http://mpgedit.org/mpgedit/mpeg_format/MP3Format.html but it seems old. Is there any recent changes to the format? I couldnt find any. How to open a mp3 file in java and look for bytes? I tried using audiostream but I am getting a lot of zeros and signed short integers which nowhere resemble the header/body format as mentioned in the above link. Am I wrong in interpreting the bytes? How to get amplitude, frequency and pitch of a mp3 file? No idea. Can you please suggest some book or tutorial? Can you please help me in getting the solution for the above questions? I am sorry if some questions appear to be naive, I am a just begun to learn mp3. Thanks

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  • MySQL: Blank row in table after LOAD DATA INFILE

    - by Tom
    Hi, I'm uploading a large amount of data from a CSV (I'm doing it via MySQL Workbench): LOAD DATA INFILE 'C:/development/mydoc.csv' INTO TABLE mydatabase.mytable CHARACTER SET utf8 FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\r'; However, I'm noticing that it keeps adding an empty line full of nulls/zeros after the last record. I'm guessing it's because of the "LINES TERMINATED" command. However, I need that to load the data in correctly. Is there some way around this / some better SQL to avoid the blank row in the table? Thanks

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  • Writing String.trim() in C

    - by Phoenix
    Hi guys, I was writing the String trim method in c and this is the code I came up with. I think it does the job of eliminating leading and trailing whitespaces however, I wish the code could be cleaner. Can you suggest improvements. void trim(char *String) { int i=0;j=0; char c,lastc; while(String[i]) { c=String[i]; if(c!=' ') { String[j]=c; j++; } else if(lastc!= ' ') { String[j]=c; j++; } lastc = c; i++; } Does this code look clean ??

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  • valid json still fails on IE with jquery's ajax or getJSON callbacks

    - by lock
    everytime my page loads, im supposed to create a datatable (also a jquery plugin) but when im fetching the contents, using .ajax or .getJSON always goes straight ahead to the error function, without even telling me what went wrong inside the callback $.ajax({ cache: false, type: "POST", url: oSettings.sAjaxSource, data: {'newdate' : date}, contentType: "application/json; charset=utf-8", dataType: "json", success: function(json) { console.log('retrieving json data'); }, error: function() { console.log("An error has occurred. Please try again."); } }); that's the actual code with the callback stripped for security purposes... this works fine in firefox which actually executes what's on the callback function but IE simply fails and proceeds to writing my log i've read alot that the primary reason the JSON calls fails for IE is whenever there are trailing commas or simply malformed JS but i used JSONLint already and verified that my json object is a valid one :(

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  • Can I suppress newlines with Django's template engine?

    - by ento
    In Rails ERB, you can suppress newlines by adding a trailing hyphen to tags: <ul> <% for @item in @items -%> <li><%= @item %></li> <% end -%> </ul> becomes: <ul> <li>apple</li> <li>banana</li> <li>cacao</li> </ul> Is there a way to do this in Django? (Disclosure: I'm generating a csv file with Django)

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  • Can I suppress newlines after each template tag with Django's template engine?

    - by ento
    In Rails ERB, you can suppress newlines by adding a trailing hyphen to tags: <ul> <% for @item in @items -%> <li><%= @item %></li> <% end -%> </ul> becomes: <ul> <li>apple</li> <li>banana</li> <li>cacao</li> </ul> Is there a way to do this in Django? (Disclosure: I'm generating a csv file with Django) Edit: Clarified that the newlines I'm hunting down are the ones left behind after the template tags.

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  • Find the closest vector

    - by Alexey Lebedev
    Hello! Recently I wrote the algorithm to quantize an RGB image. Every pixel is represented by an (R,G,B) vector, and quantization codebook is a couple of 3-dimensional vectors. Every pixel of the image needs to be mapped to (say, "replaced by") the codebook pixel closest in terms of euclidean distance (more exactly, squared euclidean). I did it as follows: class EuclideanMetric(DistanceMetric): def __call__(self, x, y): d = x - y return sqrt(sum(d * d, -1)) class Quantizer(object): def __init__(self, codebook, distanceMetric = EuclideanMetric()): self._codebook = codebook self._distMetric = distanceMetric def quantize(self, imageArray): quantizedRaster = zeros(imageArray.shape) X = quantizedRaster.shape[0] Y = quantizedRaster.shape[1] for i in xrange(0, X): print i for j in xrange(0, Y): dist = self._distMetric(imageArray[i,j], self._codebook) code = argmin(dist) quantizedRaster[i,j] = self._codebook[code] return quantizedRaster ...and it works awfully, almost 800 seconds on my Pentium Core Duo 2.2 GHz, 4 Gigs of memory and an image of 2600*2700 pixels:( Is there a way to somewhat optimize this? Maybe the other algorithm or some Python-specific optimizations.

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