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  • Using Taylor Polynomials Programmatically in Maple

    - by kzh
    I am trying to use a Taylor polynomial programmatically in Maple, but the following does not seem to work... T[6]:=taylor(sin(x),x=Pi/4,6);convert(T[6], polynom, x); f:=proc(x) convert(T[6], polynom, x); end proc; f(1); All of the following also do not work: f:=convert(T[6], polynom); f:=convert(T[6], polynom, x); f:=x->convert(T[6], polynom); f:=x->convert(T[6], polynom, x);. Is there a way of doing this without copying and pasting the output of convert into the definition of f?

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  • Cross-domain jQuery using YQL gives robots.txt error

    - by Jens Roland
    On the page http://qxlapps.dk/test.htm I am trying to perform an Ajax load from another domain, qxlapp.dk. I am using James Padolsey's xdomainajax.js plugin from: http://james.padolsey.com/javascript/cross-domain-requests-with-jquery/ When I open my test page, I get no output, but FireBug shows the JSON result, including the error message: "forbidden":"robots.txt for the domain disallows crawling for url: http://qxlapp.dk/projects/dagens_kup/show.php". The robots.txt on the qxlapp.dk domain contains the following: User-agent: Yahoo Pipes 2.0 Allow: / User-agent: * Allow: / So I don't see what the problem is? Shouldn't it pull the page just fine with those settings?

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  • Graphing perpendicular offsets in a least squares regression plot in R

    - by D W
    I'm interested in making a plot with a least squares regression line and line segments connecting the datapoints to the regression line as illustrated here in the graphic called perpendicular offsets: http://mathworld.wolfram.com/LeastSquaresFitting.html I have the plot and regression line done here: ## Dataset from http://www.apsnet.org/education/advancedplantpath/topics/RModules/doc1/04_Linear_regression.html ## Disease severity as a function of temperature # Response variable, disease severity diseasesev<-c(1.9,3.1,3.3,4.8,5.3,6.1,6.4,7.6,9.8,12.4) # Predictor variable, (Centigrade) temperature<-c(2,1,5,5,20,20,23,10,30,25) ## Fit a linear model for the data and summarize the output from function lm() severity.lm <- lm(diseasesev~temperature,data=severity) # Take a look at the data plot( diseasesev~temperature, data=severity, xlab="Temperature", ylab="% Disease Severity", pch=16 ) abline(severity.lm,lty=1) title(main="Graph of % Disease Severity vs Temperature") Should I use some kind of for loop and segments http://www.iiap.res.in/astrostat/School07/R/html/graphics/html/segments.html to do the perpendicular offsets? Is there a more efficient way? Please provide an example if possible.

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  • SQL..Sum two rows

    - by Cha
    Sample data: LOCATION NAME LABEL1 LABEL2 SERVICE TIME NY Andrew A B HOUSE 2555 NY Andrew A B CAR 35 NJ Copley C A HOUSE 1025 NY Copley A B HOUSE 650 VA Dalton D C PET 25 What I want to do ias add another column where in it shows sum(Time) of rows with same data except for the Service.Also, the services that I need are only the sum of car and house.Is this possible? If not can you help me with the right query Sample output I need: LOCATION NAME LABEL1 LABEL2 SERVICE TIME SUM NY Andrew A B HOUSE 2555 **2590** NY Andrew A B CAR 35 NJ Copley C A HOUSE 1025 1025 NY Copley A B HOUSE 650 650

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  • GAE/Django Templates (0.96) filters to get LENGTH of GqlQuery and filter it

    - by Halst
    I pass the query with comments to my template: COMM = CommentModel.gql("ORDER BY created") doRender(self,CP.template,{'CP':CP,'COMM':COMM, 'authorize':authorize()}) And I want to output the number of comments as a result, and I try to do things like that: <a href="...">{{ COMM|length }} comments</a> Thats does not work (yeah, since COMM is GqlQuery, not a list). What can I do with that? Is there a way to convert GqlQuery to list or is there another solution? (first question) Second question is, how to filter this list in template? Is there a construct like this: <a href="...">{{ COMM|where(reference=smth)|length }} comments</a> so that I can get not only the number of all comments, but only comments with certain db.ReferenceProperty() property, for example. Last question: is it weird to do such things using templates?

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  • awk and cat - How to ignore multiple lines?

    - by Filipe YaBa Polido
    I need to extract Voip log from a D-Link router, so I've setup a little python script that executes a command in this router via telnet. My script does a "cat /var/log/calls.log" and returns the result, however... it also sends non-important stuff, like the BusyBox banner, etc... How can I ignore lines from 1 to 6 and the last 2 ? This is my current output: yaba@foobar:/stuff$ python calls.py BusyBox v1.00 (2009.04.09-11:17+0000) Built-in shell (msh) Enter 'help' for a list of built-in commands. DVA-G3170i/PT # cat /var/call.log 1 ,1294620563,2 ,+351xxx080806 ,xxx530802 ,1 ,3 ,1 DVA-G3170i/PT # exit And I just need: 1 ,1294620563,2 ,+351xxx080806 ,xxx530802 ,1 ,3 ,1 (it can have multiple lines) So that I can save it to a CSV and later to a sql db. Thanks, and sorry my bad english.

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  • Code golf: find all anagrams

    - by Charles Ma
    An word is an anagram if the letters in that word can be re-arranged to form a different word. Task: Find all sets of anagrams given a word list Input: a list of words from stdin with each word separated by a new line e.g. A A's AOL AOL's Aachen Aachen's Aaliyah Aaliyah's Aaron Aaron's Abbas Abbasid Abbasid's Output: All sets of anagrams, with each set separated by a separate line Example run: ./anagram < words marcos caroms macros lump's plum's dewar's wader's postman tampons dent tend macho mocha stoker's stroke's hops posh shop chasity scythia ... I have a 149 char perl solution which I'll post as soon as a few more people post :) Have fun!

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  • How to resolve this VC++ 6.0 linker error?

    - by fishdump
    This is a Windows Console application (actually a service) that a previous guy built 4 years ago and is installed and running. I now need to make some changes but can't even build the current version! Here is the build output: --------------------Configuration: MyApp - Win32 Debug-------------------- Compiling resources... Compiling... Main.cpp winsock.cpp Linking... LINK : warning LNK4098: defaultlib "LIBCMTD" conflicts with use of other libs; use /NODEFAULTLIB:library Main.obj : error LNK2001: unresolved external symbol _socket_dontblock Debug/MyApp.exe : fatal error LNK1120: 1 unresolved externals Error executing link.exe. MyApp.exe - 2 error(s), 1 warning(s) -------------------------------------------------------------------------- If I use /NODEFAULTLIB then I get loads of errors. The code does not actually use _socket_noblock but I can't find anything on it on the 'net. Presumably it is used by some library I am linking to but I don't know what library it is in. --- Alistair.

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  • Why is my movie clip instance null?

    - by Khan
    I have 2 movie clips in my scene, one is charlie brown running and another is lucy lifting a football. The movie clip instances are aptly named: lucyLifting and charlieRunning. When I get to frame 75, I run the following code: stop(); trace(lucyLifting); trace(charlieRunning); lucyLifing.stop(); charlieRunning.stop(); and I get the following output: [object MovieClip] null Why isn't it recognizing my second movie clip instance? This is very frustrating.... Thank you in advance.

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  • WCF RIA Services build error

    - by soren.enemaerke
    Hi I'm getting a strange error when building my WCF RIA Services Silverlight project in VS2008. In the output I have this message: C:\Program Files\MSBuild\Microsoft\Silverlight\v3.0\Microsoft.Ria.Client.targets(261,5): error : Failed to write the generated contents of 'C:\projects\[Path_To_Silverlight_Project]\Generated_Code\Analytics.Web.g.cs' to Visual Studio. ...and Visual Studio opens a dialog while building with the following: An editor or project is attempting to save a file that is modified in memory. Saving files during a build is dangerous and may result in incorrect build outputs in the future. Continue with save? The other members on my team seems to be doing just fine, but I can't get past this point (I can if I click 'Continue' which then generate the file just fine but I'm reluclant to do so). There must be some setup or similar that I'm missing here... PS: I'm currently on WinXP and WCF RIA Service beta

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  • Getting Started with UDK

    - by Sean Edwards
    I've been trying for a couple of days now to learn UDK, but I seem to be stuck at making that leap to understanding how everything works together. I understand the syntax, that's all well and good, and I pretty much get how classes and .ini files interact. As for the API, I have the entire reference as pretty decent Doxygen-style HTML output. What I'm looking for is a sort of intermediate tutorial on game creation from scratch (as opposed to modding UT3 itself), more advanced than just learning language syntax, but not yet to the level of going through the API step by step. I'm looking for some guide to the structure of the internals - how GameInfo and PlayerController interact, where Pawn comes in, etc. - a way to visualize the big picture. Does anyone have a particular favorite intermediate-level tutorials (or set of tutorials) that they used when first learning UDK?

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  • JPA Entity (in multiple persistence-unit) in OSGi (Spring DM) Environnement is confusing me.

    - by Vincent Demeester
    Hi, I'm a bit confused about a strange behavior of my JPA's related objects. I have three bundle : The User bundle does contain some user-related objects, but mainly the User object. The Energy bundle does contain some energy-related objects, and particularly a ConsumptionTerminal which contains a List of User. The Index bundle does contain an Index object that has no dependency at all. My OSGi environment is the following : A DataSource bundle that provide 2 services : dataSource and jpaVendorAdapter. The three bundles. They consume dataSource and jpaVendorAdapter. Their module-context.xml file look like : And they all have a persistence.xml file : User <?xml version="1.0" encoding="UTF-8"?> <persistence> <persistence-unit name="securityPU" transaction-type="JTA"> <jta-data-source>java:/securityDataSourceService</jta-data-source> <class>net.nextep.amundsen.security.domain.User</class> <!-- [...] --> <exclude-unlisted-classes>true</exclude-unlisted-classes> <properties> <property name="eclipselink.logging.level" value="INFO" /> <property name="eclipselink.ddl-generation" value="create-tables" /> <property name="eclipselink.ddl-generation.output-mode" value="database" /> <property name="eclipselink.orm.throw.exceptions" value="true" /> </properties> </persistence-unit> </persistence> Energy <?xml version="1.0" encoding="UTF-8"?> <persistence> <persistence-unit name="energyPU" transaction-type="JTA"> <jta-data-source>java:/securityDataSourceService</jta-data-source> <class>net.nextep.amundsen.security.domain.User</class> <class>net.nextep.amundsen.energy.domain.User</class> <!-- [...] --> <exclude-unlisted-classes>true</exclude-unlisted-classes> <properties> <property name="eclipselink.logging.level" value="INFO" /> <property name="eclipselink.ddl-generation" value="create-tables" /> <property name="eclipselink.ddl-generation.output-mode" value="database" /> <property name="eclipselink.orm.throw.exceptions" value="true" /> </properties> </persistence-unit> </persistence> Index : This one has the most simple persistence.xml with just the Index class (no shared Class). I'm using named @PersistenceUnit annotation like @PersitenceUnit(name = 'securityPU') (for the User bundle). And finally, I'm using EclipseLink as Jpa provider and Spring DM (+ Spring DM Server in the development process) The problem is the following : When the User bundle is deployed, I'm able to persist User objects. When the User bundle and Energy bundles are both deployed, I'm not able to persist User objects (neither the Energy object). But I don't have any exception at all ! There is no problem at all with the Index bundle. The bug is dataSource independent (I tried with PostgreSQL and MySQL so far). My first conclusion was that the <class>net.nextep.amundsen.security.domain.User</class> in both persistence unit was causing the trouble. I tried without it (and hiding the User dependent object in the Energy bundle) but it failed too. I'm a bit confused about that bug. I'm also not quite sure about the transaction management in this context. I wasn't the one who designed this architecture (but I tell my intern OK without testing it.. shame on me) but if I could understand this bug and maybe fix it without rewrite the bundle (and break my intern work), I would appreciate. Am I doing something wrong ? (it's obvious, but what..) Did I miss something while reading documentation ? By the way, I'm also looking for some best practices or advices when it comes to JPA, EclipseLink (or whatever JPA Provider) and Spring DM (and OSGi in general). I found interesting slides from Mike Keith about this topic (by browsing Stackoverflow).

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  • Where is the .NET Framework Global Assembly Cache?

    - by Carlos Loth
    Hi, I installed the VS2010 and .NET 4.0, then I compiled an assembly and ran the gacutil using the exe available on %ProgramFiles%\Microsoft SDKs\Windows\v7.0A\Bin\NETFX 4.0 Tools The output of the executable said the assembly was sucessfully installed on Global Assembly Cache. However, when I go to %WINDIR%\assembly folder I cannot find the assembly I installed using the .NET Framework 4.0 gacutil. I've seen some posts saying the .NET Framework 4.0 has a separated GAC, but what I haven't found was where it is located. May someone to help me to check where can I see the Global Assembly Cache of .NET Framework, as it used to work on previous version (%WINDIR%\assembly)?

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  • Vectorizatoin of index operation for a scipy.sparse matrix

    - by celil
    The following code runs too slowly even though everything seems to be vectorized. from numpy import * from scipy.sparse import * n = 100000; i = xrange(n); j = xrange(n); data = ones(n); A=csr_matrix((data,(i,j))); x = A[i,j] The problem seems to be that the indexing operation is implemented as a python function, and invoking A[i,j] results in the following profiling output 500033 function calls in 8.718 CPU seconds Ordered by: internal time ncalls tottime percall cumtime percall filename:lineno(function) 100000 7.933 0.000 8.156 0.000 csr.py:265(_get_single_element) 1 0.271 0.271 8.705 8.705 csr.py:177(__getitem__) (...) Namely, the python function _get_single_element gets called 100000 times which is really inefficient. Why isn't this implemented in pure C? Does anybody know of a way of getting around this limitation, and speeding up the above code? Should I be using a different sparse matrix type?

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  • Some unit tests fail in automated Team Build task

    - by weenet
    I have an odd situation. I have a suite of unit tests that pass on my dev machine. They pass on the build machine if run from visual studio. But 5 of them reliably fail during the automated build. There is nothing noteworthy about the ones that fail that I can see (and I've stared at them a long time). Anyone seen anything like this? Is there a way to see the test output in the Team Build log? All I get is Passed or Failed messages, but not the Assert message. Thanks!

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  • Debugging ASP.NET Strings Downloaded to Browser (Montréal instead of Montréal)

    - by jdk
    I'm downloading a vCard to the browser using Response.Write to output .NET strings with special accented characters. Mime type is text/x-vcard and French characters are appearing wrong in Outlook, for example Montréal;Québec .NET string shows as Montréal Québec in browser. I'm using this vCard generator code from CodeProject.com I've played with the System.Encoding sample code at the bottom of this linked MSDN page to convert the unicode string into bytes and then write the ascii bytes but then I get Montr?al Qu?bec (progress but not a win). Also I've tried setting content type to both us-ascii and utf-8 of the response. If I open the downloaded vCard in Windows Notepad and save it as ANSI text (instead of default unicode format) and open in Outlook it's okay. So my assumption is I need to cause download of ANSI charset but am unsure if I'm doing it wrong or have a misunderstanding of where to start. Update: Looking at the raw HTTP, it appears my French characters are being downloaded in the unexpected format so it looks like I need to do some work on the server side... (full size)

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  • IE8 + Jquery ajax call giving parsererror : for json data which seems valid in Firefox

    - by PlanetUnknown
    The ajax call works fine in FF. the data returned is in JSON here is an example from FF firebug - {"noProfiles": "No profiles have been created, lets start now !"} When I try to print the error in IE8 (& in compatibility modes as well), it says "parsererror". But the output seems to be valid JSON. Here is the ajax function call I'm making. Any pointers would be great ! $.ajax({ type: "GET", url: "/get_all_profile_details/", data: "", dataType: "json", beforeSend: function() {alert("before send called");}, success: function(jsonData) { alert("data received"); }, error: function(xhr, txt, err){ alert("xhr: " + xhr + "\n textStatus: " + txt + "\n errorThrown: " + err); } }); The alerts in the error function above give - xhr:<blank> textstatus:parsererror errorThrown: undefined Any pointers would be great ! Note : jquery : 1.3.2

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  • link_to syntax with rails3 (link_to_remote) and basic javascript not working in a rails3 app?

    - by z3cko
    i am wondering if the basic link_to syntax is completely broken in current rails3 master or if i am doing some wrong syntax here. = link_to "name", nil, :onlick => "alert('Hello world!');" should actually produce an alert on click. very simple. does not work on my rails3 project! (also no error output!) any ideas? for the general link_to syntax i could not find an example where i could combine a link_to_remote with a confirmation, remote and html class (see my try below) = link_to "delete", {:action => "destroy", :remote => true, :method => :delete, :confirm => "#{a.title} wirklich L&ouml;schen?" }, :class => "trash" even the rails3 api does not help me here: http://rails3api.s3.amazonaws.com/index.html help!

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  • JavaEE in netbeans giving BUILD FAILED error upon deployment

    - by user312402
    When I try to run my Java EE program in Netbeans consisting of servlets (java pages), JSP's, beans(java pages) and HTML pages I get this error in the output: In-place deployment at C:\Users\Derek\Documents\NetBeansProjects\EJBProject\EJBProject-war\build\web Initializing... deploy?path=C:\Users\Derek\Documents\NetBeansProjects\EJBProject\EJBProject-war\build\web&name=EJBProject-war&force=true failed on Personal GlassFish v3 Domain C:\Users\Derek\Documents\NetBeansProjects\EJBProject\EJBProject-war\nbproject\build-impl.xml:611: The module has not been deployed. BUILD FAILED (total time: 1 second) And then in the command prompt when I run asant run in the appropriate directory, I get: C:\Users\Derek\Documents\NetBeansProjects\EJBProject\nbproject\build-impl.xml:19: Class org.apache.tools.ant.taskdefs.condition.Not doesn't support the nested "antversion" element. Do you know why this would be? Why won't netbeans deploy my application so I can run and test it?

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  • How to get Java Decompiler / JD / JD-Eclipse running in Eclipse Helios

    - by Universalspezialist
    Java Decompiler (JD) is generally recommended as a good, well, Java Decompiler. JD-Eclipse is the Eclipse plugin for JD. I had problems on several different machines to get the plugin running. Whenever I tried to open a .class file, the standard "Source not found" editor would show, displaying lowlevel bytecode disassembly, not the Java source output you'd expect from a decompiler. Installation docs in http://java.decompiler.free.fr/?q=jdeclipse are not bad but quite vague when it comes to troubleshooting. Opening this question to collect additional information: What problems did you encounter before JD was running in Eclipse Helios? What was the solution?

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  • MYSQL stored function - create function (function definition) problem using FORMAT

    - by Jason Fonseca
    Hi all, I keep receiving an error with the following code. I am trying to make a function that will format a field (content=0.0032) into a varchar/percent (content=0.32%). At the moment i'm just trying to get format to work, and it throws up an error "Error Code : 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'len);" The function definition for "Format" is "Format(X,d)" where x is the number and d is the number of decimal places to round too. It then should output a string ###,###,###.## etc. My code is as follows: DROP FUNCTION IF EXISTS percent; DELIMITER $$ CREATE /*[DEFINER = { user | CURRENT_USER }]*/ FUNCTION `auau7859_aba`.`percent`(num DOUBLE, len INT) RETURNS VARCHAR(10) DETERMINISTIC BEGIN RETURN FORMAT(num,len); END$$ DELIMITER ; Save me...Luke

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  • Text to MP3 using System.Speech.Synthesis.SpeechSynthesizer

    - by Rob
    I am trying to get a text-to-speech to save to an MP3. Currently I have the System.Speech.Synthesis speaking to a WAV file nicely. With New System.Speech.Synthesis.SpeechSynthesizer '.SetOutputToWaveFile(pOutputPath) This works fine .SetOutputToWaveStream(<<Problem bit>>) .Speak(pTextToSpeak) .SetOutputToNull() .Dispose() End With Now the first line commented out produces a WAV file which is nice. Currently I am trying to replace that with an MP3 output stream and not having much success. I have tried the Yeti.MMedia converter but either it isn't going to work or I haven't got it to work successfully. I have to admit here I don't know much about encodings, speeds etc. So the question I have is, does anyone know of a nice way I can say something like the following: .SetOutputToWaveStream(New MP3WriteStream(pOutputPath)) and have the SpeechSynthesizer write to the WAV which then gets converted to the MP3 and ends up on the HDD.

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  • Drupal Views Duplicate values being returned when using a relationship

    - by Linda
    I am having a problem with views. I have a view and am passing it a taxonomy term by name to it. I then have a relationship to a related node. For my output fields I am returning the related Title and related Body. I however have duplicates in my results. I have turned distinct to yes but believe this is working on the nodes being return and not the related node. Any ideas how I can remove the duplicates? Update Below is the query being run when I only get the title SELECT DISTINCT(node.nid) AS nid, node_node_data_field_wine_company.title AS node_node_data_field_wine_company_title, node_node_data_field_wine_company.nid AS node_node_data_field_wine_company_nid FROM node node LEFT JOIN content_type_wine node_data_field_wine_company ON node.vid = node_data_field_wine_company.vid INNER JOIN node node_node_data_field_wine_company ON node_data_field_wine_company.field_wine_company_nid = node_node_data_field_wine_company.nid LEFT JOIN term_node term_node ON node.vid = term_node.vid INNER JOIN term_data term_data ON term_node.tid = term_data.tid WHERE term_data.name = 'test' GROUP BY nid It looks like I should be grouping by node_node_data_field_wine_company_nid or selecting distinct values from there. Any ideas?

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  • Java JDBC: Reply.fill()

    - by Harv
    Hi, I get the following exception at times: com.ibm.db2.jcc.b.gm: [jcc][t4][2030][11211][3.50.152] A communication error occurred during operations on the connection's underlying socket, socket input stream, or socket output stream. Error location: Reply.fill(). Message: Connection reset. ERRORCODE=-4499, SQLSTATE=08001 The problem is that, the code executes successfully for quite some time and then suddenly I get this exception. However it runs perfrectly when I run the code again. Could some one please tell me what could be wrong and provide me some pointers to resolve this. Thanks, Harveer

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  • do-while loop in Python?

    - by Eye of Hell
    I need to emulate a do-while loop in a python. But, unfortunately, following straightforward code does not work: l = [ 1, 2, 3 ] i = l.__iter__() s = None while True : if s : print s try : s = i.next() except StopIteration : break print "done" Instead of "1,2,3,done" I have the following output: [stdout:]1 [stdout:]2 [stdout:]3 None['Traceback (most recent call last): ', ' File "test_python.py", line 8, in <module> s = i.next() ', 'StopIteration '] What can I do in order to catch 'stop iteration' excepton and break a while loop properly? Example why such thing may be needed. State machine: s = "" while True : if state is STATE_CODE : if "//" in s : tokens.add( TOKEN_COMMENT, s.split( "//" )[1] ) state = STATE_COMMENT else : tokens.add( TOKEN_CODE, s ) if state is STATE_COMMENT : if "//" in s : tokens.append( TOKEN_COMMENT, s.split( "//" )[1] ) else state = STATE_CODE # re-evaluate same line continue try : s = i.next() except StopIteration : break

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