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  • Generating a scalogram of a signal

    - by Goz
    Hi there, I'm trying to build a scalogram view for my app to see whether there is relevant information we can retrieve from a wavelet transform as opposed to using a spectograms to see what can be retrieved via an FFT. So far I can take a wave form and I can perform the forward wavelet transform on it. However I am lost at the next step. How do I turn this information into power/energy information? I have a set of wave forms at different frequencies but I have, as I say, no frequency information. Can anyone tell me what the next step is for turning this transformed data into a scalogram? Any help would be much appreciated because my google skills are failing me!

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  • [NSCustomView isOpaque]: message sent to deallocated instance 0x123456

    - by JxXx
    Hi all I receive that message in debugger console since I added the following arguments for debugging my application with XCode. NSZombieEnabled: YES NSZombieLevel: 16 I was looking for zombie objects... Before doing so, the application failed before I could know where what and why was happening.... Now I´m pretty sure that 'something' outside code is trying to access an object previously released and I can't know where or why it happens neither where it was released... My application is based on this proof of concept (very interesting and colorful) of QuartzCore Framework: http://www.cimgf.com/2008/03/03/core-animation-tutorial-wizard-dialog-with-transitions/ Based on it, I added a few more nsviews to my project and a title and an index to each one, also I added some buttons, text and images depending on what 'dialog' (ACLinkedView object) it was... The transition from an ACLinkedView object to another is going through a validation that depends on the view where you are ... As you see I used this proof of concept as the foundation of my application and it grew and grew into an application that makes use of configuration files, web services (using gSOAP and C ...) I hope you can give me some clues to where is my error ... I´ve been the hole week debugging unsuccessfully, as I said before, I think that that message comes from a point outside my code. I'd say that the problem s related with bad memory allocation or automatisms (nearly completely unknowns for me) during loading the nib components... I will try to explain all this with parts of mycode. This is my ACLinkedView definition: #import <Cocoa/Cocoa.h> @interface ACLinkedView : NSView { // The Window (to close it if needed) IBOutlet NSWindow *mainWindow; // Linked Views IBOutlet ACLinkedView *previousView; IBOutlet ACLinkedView *nextView; // Buttons IBOutlet NSButton *previousButton; IBOutlet NSButton *nextButton; IBOutlet NSButton *helpButton; //It has to be a Button!! IBOutlet NSImageView *bannerImg; NSString *sName; int iPosition; } - (void) SetName: (NSString*) Name; - (void) SetPosition: (int) Position; - (NSString*) GetName; - (int) GetPosition; - (void) windowWillClose:(NSNotification*)aNotification; @property (retain) NSWindow *mainWindow; @property (retain) ACLinkedView *previousView, *nextView; @property (retain) NSButton *previousButton, *nextButton, *helpButton; @property (retain) NSImageView *bannerImg; @property (retain) NSString *sName; @end The ACLinkedView's AwakeFromNib is this: #import <Cocoa/Cocoa.h> @interface ACLinkedView : NSView { // The Window (to close it if needed) IBOutlet NSWindow *mainWindow; // Linked Views IBOutlet ACLinkedView *previousView; IBOutlet ACLinkedView *nextView; // Buttons IBOutlet NSButton *previousButton; IBOutlet NSButton *nextButton; IBOutlet NSButton *helpButton; //It has to be a Button!! IBOutlet NSImageView *bannerImg; NSString *sName; int iPosition; } - (void) SetName: (NSString*) Name; - (void) SetPosition: (int) Position; - (NSString*) GetName; - (int) GetPosition; - (void) windowWillClose:(NSNotification*)aNotification; @property (retain) NSWindow *mainWindow; @property (retain) ACLinkedView *previousView, *nextView; @property (retain) NSButton *previousButton, *nextButton, *helpButton; @property (retain) NSImageView *bannerImg; @property (retain) NSString *sName; @end (As you can see the initialization of each ACLinkedView object depends on it's position wich is seted up into the Interface Builder by linking actions, buttons and CustomViews... Does I explain enough? Do you think that I should put more of my code here, i.e. AppDelegate definition or it´s awakeFromNib method? Can you help me in any way? Thanks in advance. Juan

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  • iPhone development time...

    - by Tisch
    I have been asked to develop a relatively simple iPhone application. However, it would be my first application. I am a fairly competent programmer and can turn my skills to a new language fairly quickly... what my question is, is... How long has it taken some of you guys to make your first iPhone application and what was your experience like? Also, if you can say this sort of information, how much did you charge for it?! Thanks in advance. Kindest Regards Tom

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  • Good development themes/environments for Gnome/kde/whatever?

    - by EvanAlm
    I've searched forever for good themes or customized versions of any type of x-server that is designed for development in terms of web productions/programming for all kind of stuffs. Features such as simplified workspace overviews, good tabbing support etc. For multimedia "UbuntuStudio" exists, and something like that but for programming instead. I know that it's possible to customize it by myself but I don't have the skills to make it all happen. Another reason why it's hard for me to customize it is that I simply do not know everything that would make it good for me. I've looked into gnome-shell and it has (according to me) superb workspace overview functions, but lacks in other spaces instead. Any help in finding a good solution for me in this case is appreciated. If some of you also have had this problem and found a solution that works for you, please tell me how you did :) Would love to solve this for once!

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  • What is a programmer's life like?

    - by Zee JollyRoger
    Imagine like an 8-hour long video of any "typical/average" programming job. What is it like? Before I get myself involved in that path, what can I expect? I am interested in gathering first-hand information and accounts of the typical life of a programmer. My goal is to grasp the fundamental concepts of working in the professional field of programming. I just want to "see" into what it is/means to come to an entry-level programming job and program. See what kind of skills, mentality, expectations, and such are required.

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  • review on django book vs django tutorial

    - by momo
    going through both the django book and tutorial, am a bit confused to the differences in approach (aren't they both written by the same people?) can anyone who has experience in both give a short review on them? i have decent python skills (largely untested though), but no experience at all in web apps and am trying to decide which one to stick to. i briefly looked in to practical django projects but that was a bit too complicated for me, my background is primarily bash scripting, the python i know i learned from an instant hacking tutorial and diving into python.

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  • CMS template creation and jQuery integration

    - by Fermin
    Hi, First off I should say that I don't have any experience in working with a CMS. I have 2 general questions about CMS: How easy is it to create a template? I have strong CSS/XHTML skills, is creating a template as easy as writing the markup or does it have to be done in a very rigid way? How is jQuery support in CMS systems? I like what you can do with jQuery and would like to incorporate it into the next couple of sites that I will do. EDIT: So far answers are asking which CMS, I don't have any in mind. Any suggestions welcome, open source and non .NET preferable.

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  • Coldfusion multiserver instance hangs

    - by David Sedeño
    I have a coldfusion 8 multiserver setup with IIS in Windows 2008 Standard SP2 and when one instance "hangs" (I can't connect to the instance from fusion reactor) the web server throws a "503 service unavailable". The remains instance seems to works ok in fusion reactor but the website have only the 503. I have to restart jvm processes and IIS to get the website work again. The jvm processes have the option -Xmx2048m and the instanaces have 2.5Gb allocated. Maybe the jvm process reach the 2Gb limit and stop working? Can be a problem between IIS and CF instances? I'm new to CF debugging process, how can I find why the instance hangs? Thanks

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  • Authentication for SaaS

    - by josh
    What would be recommended as an authentication solution for a Software-as-a-service product? Specifically, my product would have clients that would typically have low information technology skills, potentially not even having an IT department within their organization. I would still like to have my application authenticate against their internal directory service (eDirectory, Active Directory, etc.). I don't want them, however, to have to open/forward ports (for instance, opening up port 636 so I can do LDAPS binds directly to their directory service). One idea I had was to have an application installed on a server within their organization's network that would backconnect to my service. This would be a persistant socket. When I need to authenticate a user, I send the credentials via the socket (encrypted) - the application then performs a bind/whatever to authenticate against the directory service and replies with OK/FAIL. What would you suggest? My goal here is to essentially have the client install an application within their network, with very little configuration or intervention.

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  • Examples of networked Flash games

    - by videodnd
    Maybe I am asking the wrong questions, because I don't see any sample projects out there. I know Flash developers have done Kiosks and renovated arcade games. "Come on, we see Flash everywhere." Is there a sample project I could be pointed towards, it would be an ass-saver. Can I prepare my swf files like an image gallery and receive XML commands to load it? Where do I start? Flash/After Effects skills have got me through so far, but I need help!!! It would be fun if it wasn't so stressful. Criteria TCP/IP socket connection Flash package XML commands load swf file in to a container Additional Questions How do I prepare my Flash files and XML sheet to receive commands "any sample out there"? What about e.data, urlLoad, xmlSocket Class, XMLCP/IP XML socket connection to load Is binary or XML method better for loading and reloading swf files? Do I need Red5 or a media server? videoDnd, Ambitious Development Noob

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  • MySql UDF using shared library won't load

    - by Jarrod
    I am attempting to create a mysql UDF which will match a fingerprint using Digital Persona's free linux SDK library. I have written a trivial UDF as a learning experience which worked fine. However, when I added a dependency to Digital Persona's shared object I can no longer get MySql to load my UDF. I added includes to DP's headers and compiled my UDF using: gcc -fPIC -Wall -I/usr/src/mysql-5.0.45-linux-i686-icc-glibc23/include -shared -o dp_udf.so dp_udf.cc I also tried adding the -static argument, but whenever I restart MySql, I get the error: Can't open shared library 'dp_udf.so' (errno: 0 /usr/local/mysql/lib/plugin/dp_udf.so: undefined symbol: MC_verifyFeaturesEx) MC_verifyFeaturesEx is a function defined "dpMatch.h" which I included, and is implemented in libdpfpapi.so which I have tried placing in the same location as my dp_udf.so and in /usr/lib. Am I doing something wrong with my call to gcc (my C++ skills are rusty) or does MySql not allow UDFs to use additional shared objects?

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  • Programming mid-terms

    - by Dervin Thunk
    Hello. Unfortunately, (written) midterms are necessary in most university CS programs in the world. They tell us how well our students (and ourselves as teachers) are doing. Needless to say, designing midterms for a C Programming Language course is not easy. For instance, when we do program for real, we have a myriad of information at our disposal: websites, books, cheat sheets to "remember" the syntax and so on. My question is this: did you find any way, during your years at school or training, where you said: ok, this midterm evaluation of my programming skills is tough, but fair. For instance: I found "find 5 problems with this code"-type questions hard but interesting and telling. Are there any others? Thanks.

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  • How make a control that look like the "download" dialog of firefox

    - by mamcx
    I have a aplication that like firefox, can be enchanced from plugins available from internet. Now, I want to provide in Delphi (2010) a dialog similar to the download from firefox. I have no skills in build graphical controls. Using the standard controls of Delphi, what could be the best way... using a TListView/TStringGrid with custom draw or... The idea is show a icon in the left, a title with subtitle with 1-3 lines on the middle and date/version on the rigth. That row must be selectable and that is all.

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  • Getting 500 Error when trying to access Rails application through Apache2

    - by cojones
    Hey, I'm using Apache2 as proxy and mongrel_cluster as server for my Rails applications. When I try to access it by typing in the url I get a 500 "Internal Server Error" but when try to locally access the website with "lynx http://localhost:8200" it works. This is my config: <Proxy balancer://sportfreundewitold_cluster> BalancerMember http://127.0.0.1:8200 BalancerMember http://127.0.0.1:8201 </Proxy> # httpd [example.org] dmn entry BEGIN. <VirtualHost x.x.x.x:80> <IfModule suexec_module> SuexecUserGroup vu2025 vu2025 </IfModule> ServerAdmin [email protected] DocumentRoot /var/www/virtual/example.org/htdocs/current/public ServerName example.org ServerAlias www.example.org example.org *.example.org vu2025.admin.roughneck-media.de Alias /errors /var/www/virtual/example.org/errors/ RedirectMatch permanent ^/ftp[\/]?$ http://admin.roughneck-media.de/ftp/ RedirectMatch permanent ^/pma[\/]?$ http://admin.roughneck-media.de/pma/ RedirectMatch permanent ^/webmail[\/]?$ http://admin.roughneck-media.de/webmail/ RedirectMatch permanent ^/ispcp[\/]?$ http://admin.roughneck-media.de/ ErrorDocument 401 /errors/401.html ErrorDocument 403 /errors/403.html ErrorDocument 404 /errors/404.html ErrorDocument 500 /errors/500.html ErrorDocument 503 /errors/503.html <IfModule mod_cband.c> CBandUser example.org </IfModule> # httpd awstats support BEGIN. # httpd awstats support END. # httpd dmn entry cgi support BEGIN. ScriptAlias /cgi-bin/ /var/www/virtual/example.org/cgi-bin/ <Directory /var/www/virtual/example.org/cgi-bin> AllowOverride AuthConfig #Options ExecCGI Order allow,deny Allow from all </Directory> # httpd dmn entry cgi support END. <Directory /var/www/virtual/example.org/htdocs/current/public> # httpd dmn entry PHP support BEGIN. # httpd dmn entry PHP support END. Options -Indexes Includes FollowSymLinks MultiViews AllowOverride All Order allow,deny Allow from all </Directory> # httpd dmn entry PHP2 support BEGIN. <IfModule mod_php5.c> php_admin_value open_basedir "/var/www/virtual/example.org/:/var/www/virtual/example.org/phptmp/:/usr/share/php/" php_admin_value upload_tmp_dir "/var/www/virtual/example.org/phptmp/" php_admin_value session.save_path "/var/www/virtual/example.org/phptmp/" php_admin_value sendmail_path '/usr/sbin/sendmail -f vu2025 -t -i' </IfModule> <IfModule mod_fastcgi.c> ScriptAlias /php5/ /var/www/fcgi/example.org/ <Directory "/var/www/fcgi/example.org"> AllowOverride None Options +ExecCGI -MultiViews -Indexes Order allow,deny Allow from all </Directory> </IfModule> <IfModule mod_fcgid.c> Include /etc/apache2/mods-available/fcgid_ispcp.conf <Directory /var/www/virtual/example.org/htdocs> FCGIWrapper /var/www/fcgi/example.org/php5-fcgi-starter .php Options +ExecCGI </Directory> <Directory "/var/www/fcgi/example.org"> AllowOverride None Options +ExecCGI MultiViews -Indexes Order allow,deny Allow from all </Directory> </IfModule> # httpd dmn entry PHP2 support END. Include /etc/apache2/ispcp/example.org.conf RewriteEngine On # Make sure people go to www.myapp.com, not myapp.com RewriteCond %{HTTP_HOST} ^myapp\.com$ [NC] RewriteRule ^(.*)$ http://www.myapp.com$1 [R=301,L] # Yes, I've read no-www.com, but my site already has much Google-Fu on # www.blah.com. Feel free to comment this out. # Uncomment for rewrite debugging #RewriteLog logs/myapp_rewrite_log #RewriteLogLevel 9 # Check for maintenance file and redirect all requests RewriteCond %{DOCUMENT_ROOT}/system/maintenance.html -f RewriteCond %{SCRIPT_FILENAME} !maintenance.html RewriteRule ^.*$ /system/maintenance.html [L] # Rewrite index to check for static RewriteRule ^/$ /index.html [QSA] # Rewrite to check for Rails cached page RewriteRule ^([^.]+)$ $1.html [QSA] # Redirect all non-static requests to cluster RewriteCond %{DOCUMENT_ROOT}/%{REQUEST_FILENAME} !-f RewriteRule ^/(.*)$ balancer://mongrel_cluster%{REQUEST_URI} [P,QSA,L] # Deflate AddOutputFilterByType DEFLATE text/html text/plain text/xml application/xml application/xhtml+xml text/javascript text/css BrowserMatch ^Mozilla/4 gzip-only-text/html BrowserMatch ^Mozilla/4\.0[678] no-gzip BrowserMatch \\bMSIE !no-gzip !gzip-only-text/html # Uncomment for deflate debugging #DeflateFilterNote Input input_info #DeflateFilterNote Output output_info #DeflateFilterNote Ratio ratio_info #LogFormat '"%r" %{output_info}n/%{input_info}n (%{ratio_info}n%%)' deflate #CustomLog logs/myapp_deflate_log deflate </VirtualHost> # httpd [example.org] dmn entry END. Does anyone know what could be wrong with it?

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  • Create an grid array...

    - by Anicho
    Okay so I am looking to create a grided array in OGRE3D game engine but the array is generic my array skills are pretty basic and need work so I am posting this just to be sure I am doing this correctly. #define GRIDWIDTH 10 #define GRIDHEIGHT 10 int myGrid [HEIGHT][WIDTH]; int n,m; int main () { for (n=0;n<HEIGHT;n++) for (m=0;m<WIDTH;m++) { jimmy[n][m]=(n+1)*(m+1); } return 0; } I am assuming the above will return: 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 Then I can assign each point in the array to a valid node in OGRE3D to create a grid in 3D view would this work? Just need to tell me if I am doing it right or wrong dont need the ogre3d code....

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  • How do I disable administrator prompt in Windows 8?

    - by Arnold Zokas
    I am using Windows 8 Enterprise on my development machine. Most of the time, I need full administrator for debugging, changing system files, etc. In Windows 7, setting UAC to "never notify" would disable any administrator prompts. In Windows 8 this is no longer the case. Even with UAC disabled I get prompted to grant programs elevated privileges. Is there a way disable this behaviour? Note: I am fully aware of the repercussions. I have antivirus, firewall, etc and am generally quite careful about what I download or install on my machine.

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  • Why does mod_security require an ACCEPT HTTP header field?

    - by ripper234
    After some debugging, I found that the core ruleset of mod_security blocks requests that don't have the (optional!) ACCEPT header field. This is what I find in the logs: ModSecurity: Warning. Match of "rx ^OPTIONS$" against "REQUEST_METHOD" required. [file "/etc/apache2/conf.d/modsecurity/modsecurity_crs_21_protocol_anomalies.conf"] [line "41"] [id "960015"] [msg "Request Missing an Accept Header"] [severity "CRITICAL"] [tag "PROTOCOL_VIOLATION/MISSING_HEADER"] [hostname "example.com"] [uri "/"] [unique_id "T4F5@H8AAQEAAFU6aPEAAAAL"] ModSecurity: Access denied with code 400 (phase 2). Match of "rx ^OPTIONS$" against "REQUEST_METHOD" required. [file "/etc/apache2/conf.d/modsecurity/optional_rules/modsecurity_crs_21_protocol_anomalies.conf"] [line "41"] [id "960015"] [msg "Request Missing an Accept Header"] [severity "CRITICAL"] [tag "PROTOCOL_VIOLATION/MISSING_HEADER"] [hostname "example.com"] [uri "/"] [unique_id "T4F5@H8AAQEAAFU6aPEAAAAL"] Why is this header required? I understand that "most" clients send these, but why is their absence considered a security threat?

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  • Animated Circular bar on hover

    - by Anthony
    I'm building a portfolio website and want to implement a skill set page which feature an animated circular bar which represent each of my skills. There will be 6 buttons around the circle which when the user hovers over, and when one is hovered I want a circular bar to animate anti-clockwise. I've made a quick .gif in photoshop to demonstrate But I can't find any tutorial to help. I found this website which features a similar concept on the left hand side at the top, an animated pie chart - Website Example And this is a quick .gif Mockup I did in photoshop of what I am trying to achieve - Animated Circular Bar Animation

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  • Right recursive grammar or left recursive?

    - by user2485710
    I have little to no knowledge of what I'm about to ask, so I would like a suggestion based on the level of skills required to implemented a parser for the given grammar ( since I'm a beginner in this kind of formal approach to parsers and languages ). Just by going back of a couple of years, this situation reminds me a little of Pascal grammar vs C/C++ grammar, this left vs right stuff. But I'm not going to do any of that, my purpose is to implement a simple parser for a markup language for documents like Markdown. So considering that I'm starting with a markup language in mind, I want to keep things simple, which is the easiest one to handle between this 2 options and why . Another kind of grammar could be an easier option for me ? If yes which one do you suggest ?

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  • Loop through hex variable in C

    - by Jud Stephenson
    I have the following code in a project that write's the ascii representation of packet to a unix tty: int written = 0; int start_of_data = 3; //write data to fifo while (length) { if ((written = write(fifo_fd, &packet[start_of_data], length)) == -1) { printf("Error writing to FIFO\n"); } else { length -= written; } } I just want to take the data that would have been written to the socket and put it in a variable. to debug, I have just been trying to printf the first letter/digit. I have tried numerous ways to get it to print out, but I keep getting hex forms (I think). The expected output is: 13176 and the hex value is: 31 33 31 37 36 0D 0A (if that is even hex) Obviously my C skills are not the sharpest tools in the shed. Any help would be appreciated.

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  • reading job requirements

    - by Kaiynat Naz
    Hi Frins, I'd like to read an advertisement for the job through my program. Initially i am working on the templates provided by the microsoft word as "Job Description". Basically I have to extract the requirements of jobs like required education, skills or any development tools etc. I'd store these requirements in the database and then further use these in my application. Simply I dont know how to do this efficiently as I'd like to ignore articles, pronouns and so on... I am developing my application in VC#. Kindly help me... :'( Regards Kaiynat Naz

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  • How closely related is music composition to coding?

    - by ehsanul
    It seems to me as if there are a higher proportion of musicians in the programming field than in the general public. Maybe it's just an illusion caused by the fact that I'm an amateur guitarist myself, so I tend to notice coding musicians (or musical coders?) more. But I wonder if there really is some connection. Perhaps a shared set of skills or an innate quality that makes it more likely for someone who enjoys programming to also enjoy playing and composing music. How closely related is music composition to coding? I'd especially like to hear from the musicians around here.

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  • Redhat 6 gui installation VS kickstart gives me different packages?

    - by jonaz
    If i do the graphical install and select basic server + aide and screen i get a system with 535 installed packages. If i look at the /root/anaconda-ks.cfg file in that freshly installed system i see: %packages @base @console-internet @core @debugging @directory-client @hardware-monitoring @java-platform @large-systems @network-file-system-client @performance @perl-runtime @security-tools @server-platform @server-policy @system-admin-tools pax python-dmidecode oddjob sgpio certmonger pam_krb5 krb5-workstation nscd pam_ldap nss-pam-ldapd perl-DBD-SQLite aide screen If i then install a NEW system using a kickstart only containing those packages i get 620 installed packages. So basicly my question is why does the system install almost 100 more packages when using kickstart compared to the GUI installation when the exact same packagegroups are selected?

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  • RemoteApp: Logging in as user x disconnects user y

    - by onik
    I'm having a pretty bizarre problem with a Terminal Services server used for RemoteApp. In our network the server works as it should, but at a client's office if two users log in simultaneously, the first one gets disconnected as the other one connects. The users belong to the same group but have individual users. The similar configuration works fine for all other clients. About the server, it's Windows 2008 R2 x64, no AD, SSL encrypted connections. Event viewer shows no useful information. Any hints where to start debugging? Do you need more info about the setup?

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  • SQLAlchemy automatically converts str to unicode on commit

    - by Victor Stanciu
    Hello, When inserting an object into a database with SQLAlchemy, all it's properties that correspond to String() columns are automatically transformed from <type 'str'> to <type 'unicode'>. Is there a way to prevent this behavior? Here is the code: from sqlalchemy import create_engine, Table, Column, Integer, String, MetaData from sqlalchemy.orm import mapper, sessionmaker engine = create_engine('sqlite:///:memory:', echo=False) metadata = MetaData() table = Table('projects', metadata, Column('id', Integer, primary_key=True), Column('name', String(50)) ) class Project(object): def __init__(self, name): self.name = name mapper(Project, table) metadata.create_all(engine) session = sessionmaker(bind=engine)() project = Project("Lorem ipsum") print(type(project.name)) session.add(project) session.commit() print(type(project.name)) And here is the output: <type 'str'> <type 'unicode'> I know I should probably just work with unicode, but this would involve digging through some third-party code and I don't have the Python skills for that yet :)

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