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  • Accelerometer gravity components

    - by Dvd
    Hi, I know this question is definitely solved somewhere many times already, please enlighten me if you know of their existence, thanks. Quick rundown: I want to compute from a 3 axis accelerometer the gravity component on each of these 3 axes. I have used 2 axes free body diagrams to work out the accelerometer's gravity component in the world X-Z, Y-Z and X-Y axes. But the solution seems slightly off, it's acceptable for extreme cases when only 1 accelerometer axis is exposed to gravity, but for a pitch and roll of both 45 degrees, the combined total magnitude is greater than gravity (obtained by Xa^2+Ya^2+Za^2=g^2; Xa, Ya and Za are accelerometer readings in its X, Y and Z axis). More detail: The device is a Nexus One, and have a magnetic field sensor for azimuth, pitch and roll in addition to the 3-axis accelerometer. In the world's axis (with Z in the same direction as gravity, and either X or Y points to the north pole, don't think this matters much?), I assumed my device has a pitch (P) on the Y-Z axis, and a roll (R) on the X-Z axis. With that I used simple trig to get: Sin(R)=Ax/Gxz Cos(R)=Az/Gxz Tan(R)=Ax/Az There is another set for pitch, P. Now I defined gravity to have 3 components in the world's axis, a Gxz that is measurable only in the X-Z axis, a Gyz for Y-Z, and a Gxy for X-Y axis. Gxz^2+Gyz^2+Gxy^2=2*G^2 the 2G is because gravity is effectively included twice in this definition. Oh and the X-Y axis produce something more exotic... I'll explain if required later. From these equations I obtained a formula for Az, and removed the tan operations because I don't know how to handle tan90 calculations (it's infinity?). So my question is, anyone know whether I did this right/wrong or able to point me to the right direction? Thanks! Dvd

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  • uninitialized local variable

    - by blitzeus
    This code compiles and runs though gives a Microsoft compiler error that I cant fix warning C4700: uninitialized local variable 'ptr4D' used. This is in the last line of the code, I think #include <iostream> using namespace std; const int DIM0 = 2, DIM1 = 3, DIM2 = 4, DIM3 = 5; void TestDeclar(); int main(){ TestDeclar(); cout << "Done!\n"; return 0; } void TestDeclar(){ //24 - array of 5 floats float xa[DIM3], xb[DIM3], xc[DIM3], xd[DIM3], xe[DIM3], xf[DIM3]; float xg[DIM3], xh[DIM3], xi[DIM3], xj[DIM3], xk[DIM3], xl[DIM3]; float xm[DIM3], xn[DIM3], xo[DIM3], xp[DIM3], xq[DIM3], xr[DIM3]; float xs[DIM3], xt[DIM3], xu[DIM3], xv[DIM3], xw[DIM3], xx[DIM3]; //6 - array of 4 pointers to floats float *ya[DIM2] = {xa, xb, xc, xd}, *yb[DIM2] = {xe, xf, xg, xh}; float *yc[DIM2] = {xi, xj, xk, xl}, *yd[DIM2] = {xm, xn, xo, xp}; float *ye[DIM2] = {xq, xr, xs, xt}, *yf[DIM2] = {xu, xv, xw, xx}; //2 - array of 3 pointers to pointers of floats float **za[DIM1] = {ya, yb, yc}; float **zb[DIM1] = {yd, ye, yf}; //array of 2 pointers to pointers to pointers of floats float ***ptr4D[DIM0] = {za, zb}; cout << &***ptr4D[DIM0] << '\n'; }

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  • When to pass pointers in functions?

    - by yCalleecharan
    scenario 1 Say my function declaration looks like this: void f(long double k[], long double y[], long double A, long double B) { k[0] = A * B; k[1] = A * y[1]; return; } where k and y are arrays, and A and B are numerical values that don't change. My calling function is f(k1, ya, A, B); Now, the function f is only modifying the array "k" or actually elements in the array k1 in the calling function. We see that A and B are numerical values that don't change values when f is called. scenario 2 If I use pointers on A and B, I have, the function declaration as void f(long double k[], long double y[], long double *A, long double *B) { k[0] = *A * *B; k[1] = *A * y[1]; return; } and the calling function is modified as f(k1, ya, &A, &B); I have two questions: Both scenarios 1 and 2 will work. In my opinion, scenario 1 is good when values A and B are not being modified by the function f while scenario 2 (passing A and B as pointers) is applicable when the function f is actually changing values of A and B due to some other operation like *A = *B + 2 in the function declaration. Am I thinking right? Both scenarios are can used equally only when A and B are not being changed in f. Am I right? Thanks a lot...

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  • Error Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException [migrated]

    - by user134212
    I'm new here. I'm learning how to program on java and I have a problem with my code. I really have no clue why my code is not working. I think my mistake may be here, but I'm not quite sure. m3 = new Matriz(ren2,col2); btSumar.addActionListener(new ActionListener() { Matriz m3;//(ren2,col2); public void actionPerformed(ActionEvent e) { m3 = new Matriz(ren2,col2); if(ventanaAbierta==true) { try { crearMat.SUMA(m1,m2); } catch(Exception nul) { System.out.println(nul); } } else { JOptionPane.showMessageDialog(null,"Ya se realizo la suma"); } } }); My Complete code import java.awt.*; import javax.swing.*; import javax.swing.BorderFactory; import javax.swing.border.Border; import java.awt.event.*; import java.awt.*; import java.io.*; import java.util.*; public class Practica2 { private int opcion,ren2,col2; private JFrame ventana,ventanaPrintMatriz; private JPanel panel,panel2; private Border borderRed2,borderBlue2,borderGreen2,borderGreen4; private Color red,green,blue,white,black; private Font Verdana14,ArialBlack18; private JLabel labelTitulo; public JButton btSalir,btSumar,btRestar,btMultiplica,btTranspuesta,btCrear; private ImageIcon suma,resta,multi,crear,salir,trans; private boolean ventanaAbierta = false; private static ValidacionesMatrices valida; private static Operaciones operacion; private static Matriz m1,m2,m3; private static ImprimirMatriz printMat; public Practica2() { panel = new JPanel(); panel.setLayout(null); ventana = new JFrame("Operaciones con Matrices"); ventana.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); ventana.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { //Sale del programa System.exit(0); } }); ventana.setContentPane(panel); ventana.setVisible(true); ventana.setResizable(false); ventana.setBounds(150,150,300,380); //ventana.setBounds(0,0,650,650); } public void inicializarComponentes() { panel2 = new JPanel(); panel2.setLayout(null); labelTitulo = new JLabel("Practica #2"); suma = new ImageIcon("suma1.png"); resta = new ImageIcon("resta1.png"); multi = new ImageIcon("multi1.png"); trans = new ImageIcon("trans2.png"); crear = new ImageIcon("crear1.png"); salir = new ImageIcon("salir1.png"); btTranspuesta = new JButton("Transpuesta",trans); btMultiplica = new JButton("Multiplica",multi); btRestar = new JButton("Restar",resta); btSumar = new JButton("Sumar",suma); btCrear = new JButton("Crear",crear); btSalir = new JButton("Salir",salir); //Tipo de letra ArialBlack18 = new Font("Arial Black",Font.BOLD,18); //Color green = new Color(0,255,0); //Formato labelTitulo labelTitulo.setBounds(80,-60,200,150); labelTitulo.setFont(ArialBlack18); labelTitulo.setForeground(blue); labelTitulo.setVisible(true); //Formato de CrearMatriz btCrear.setBounds(80,50,130,30); btCrear.setToolTipText("Crea una matriz"); //Formato de Muliplica btMultiplica.setBounds(80,100,130,30); btMultiplica.setToolTipText("Mat[A] * Mat[B]"); //Formato de botonRestar btRestar.setBounds(80,150,130,30); btRestar.setToolTipText("Mat[A] - Mat[B]"); //Formato del botonSumar btSumar.setBounds(80,200,130,30); btSumar.setToolTipText("Mat[A] + Mat[B]"); //Formato de Transpuesta btTranspuesta.setBounds(80,250,130,30); btTranspuesta.setToolTipText("Mat[A]^-1"); //Formato del botonSalir btSalir.setBounds(80,300,130,30); //Agregando componentes al panel1 panel2.add(labelTitulo); panel2.add(btMultiplica); panel2.add(btCrear); panel2.add(btRestar); panel2.add(btSumar); panel2.add(btSalir); panel2.add(btTranspuesta); //Formato panel2 panel2.setBackground(green); panel2.setVisible(true); panel2.setBounds(0,0,300,380); //Argregamos componentes al panelPrincipal= panel.add(panel2); //BotonCrear btCrear.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) //throws IOException { if(ventanaAbierta==false) { ventanaAbierta=true; new CrearMatriz(); } else { JOptionPane.showMessageDialog(null,"Ya se crearon las Matrices"); } } }); m3 = new Matriz(ren2,col2); btSumar.addActionListener(new ActionListener() { Matriz m3;//(ren2,col2); public void actionPerformed(ActionEvent e) { m3 = new Matriz(ren2,col2); if(ventanaAbierta==true) { try { crearMat.SUMA(m1,m2); } catch(Exception nul) { System.out.println(nul); } } else { JOptionPane.showMessageDialog(null,"Ya se realizo la suma"); } } }); //BotonSalir btSalir.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { System.exit(0); } }); panel.setVisible(true); panel.setBounds(0,0,350,380); } class VentanaMatriz { private JFrame ventana; private JPanel panel; private JTextArea textArea1,textArea2; private JLabel mat1,mat2; private JTextField textField1; public VentanaMatriz() { panel = new JPanel(); panel.setLayout(null); ventana = new JFrame("Creacion de Matrices"); ventana.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { ventana.dispose(); } }); ventana.setContentPane(panel); ventana.setVisible(true); ventana.setResizable(false); ventana.setBounds(200,100,850,420); } public void inicializarComponentes() { //Colores black = new Color(0,0,0); white = new Color(255,255,255); blue = new Color(0,0,255); green = new Color(0,255,0); red = new Color(255,0,0); //Tipo de letra Verdana14 = new Font("Verdana",Font.BOLD,14); //Tipos de borde borderRed2 = BorderFactory.createLineBorder(red,2); borderBlue2 = BorderFactory.createLineBorder(blue,2); borderGreen2 = BorderFactory.createLineBorder(green,2); borderGreen4 = BorderFactory.createLineBorder(green,4); //Agregando componentes al panel1 panel.add(mat1); panel.add(textArea1); panel.add(mat2); panel.add(textArea2); //Formato panel2 panel.setBackground(blue); panel.setVisible(true); panel.setBounds(0,0,850,420); } } class CrearMatriz { public int col1,re1,ren2,col2; public Matriz m1,m2,m3; public CrearMatriz() { int col1,ren1,ren2,col2; ren2 = Integer.parseInt(JOptionPane.showInputDialog("Numero de Renglones Matriz A: ")); col2 = Integer.parseInt(JOptionPane.showInputDialog("Numero de Columnas Matriz A: ")); final Matriz m1= new Matriz(ren2,col2); ren2 = Integer.parseInt(JOptionPane.showInputDialog("Numero de Renglones Matriz B: ")); col2 = Integer.parseInt(JOptionPane.showInputDialog("Numero de Columnas Matriz B: ")); final Matriz m2= new Matriz(ren2,col2); m3 = new Matriz(ren2,col2); m1.llenarMatriz(); m2.llenarMatriz(); m1.printMat(); m2.printMat(); } public void SUMA(Matriz m1,Matriz m2) { Matriz m3; if(ventanaAbierta==false) { m3 = new Matriz(ren2,col2); if(valida.validaSumayResta(m1,m2)) { m3 = operacion.sumaMat(m1,m2); JOptionPane.showMessageDialog(null,"La suma es = "); m3.imprimeMatriz(); } else { JOptionPane.showMessageDialog(null,"No es posible hacer la suma"); } } } public void RESTA() { } //btSumar = new JButton("Sumar",suma); //BotonSumar //Mostrar matriz 1 y 2 // System.out.println("\n\n\nMatriz 1="); // m1.imprimeMatriz(); // System.out.println("\nMatriz 2="); //Poner en botones /* if(valida.validaSumayResta(m1,m2)) { m3 = operacion.sumaMat(m1,m2); JOptionPane.showMessageDialog(null,"La suma es = "); m3.imprimeMatriz(); } else { JOptionPane.showMessageDialog(null,"No es posible hacer la suma"); } if(valida.validaSumayResta(m1,m2)) { m3=operacion.restaMat(m1,m2); JOptionPane.showMessageDialog(null,"La resta es = "); m3.imprimeMatriz(); } else { JOptionPane.showMessageDialog(null,"No es posible hacer la resta"); } if(valida.validaMultiplicacion(m1,m2)){ m3=operacion.multiplicaMat(m1,m2); JOptionPane.showMessageDialog(null,"La multiplicacion es = "); m3.imprimeMatriz(); } else { JOptionPane.showMessageDialog(null,"No es posible hacer la multiplicacion"); } JOptionPane.showMessageDialog(null,"La multiplicacion es = "); m1=operacion.transpuesta(m1); m2=operacion.transpuesta(m2); */ } class Matriz { public JTextField matriz; //public JTextArea texto; private JFrame ventanaPrintMatriz; private JPanel panel2; int ren; int col; int pos[][]; public Matriz(int ren1, int col1) { ren = ren1; col = col1; pos = new int [ren][col];/*una matriz de enteros de renglon por columan*/ } public void llenarMatriz() { for(int i=0;i<ren;i++) for(int j=0;j<col;j++) pos[i][j]=(int) (Math.random()*10);/*la posicion i y j crea un entero random*/ } /*vuelve a recorrer los espacio de i y j*/ } //Esta clase era un metodo de CrearMatriz class ImprimirMatriz { public void ImprimirMatriz() { panel2 = new JPanel(); panel2.setLayout(null); ventanaPrintMatriz = new JFrame("Matriz"); ventana.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { //Practica2.ventanaAbierta=false; ventana.dispose(); } }); int i,j; int x=0,y=0; borderRed2 = BorderFactory.createLineBorder(red,2); white = new Color(255,255,255); red = new Color(255,0,0); black = new Color(0,0,0); blue = new Color(0,0,255); for(i=0;i<ren;i++) { for(j=0;j<col;j++) { matriz = new JTextField(" "+pos[i][j]); matriz.setBorder(borderRed2); matriz.setForeground(white); matriz.setBounds(x+25,y+25,25,25); matriz.setBackground(black); matriz.setEditable(false); matriz.setVisible(true); //Se incrementa la coordenada en X //para el siguiente Textfield no se encime x=x+35; //Agregamos el textField al panel panel2.add(matriz); } //Regreso las cordenadas de X a 0 para que el //siguiente renglon empieze en donde mismo x=0; //Incremento las coordenada Y para que se brinque //de linea y=y+35; } //Formato panel2 panel2.setBounds(150,150,350,380); panel2.setBackground(blue); //panel2.setEditable(false); panel2.setVisible(true); //Formato de Ventana ventanaPrintMatriz.setContentPane(panel2); ventanaPrintMatriz.setBounds(150,150,350,380); ventanaPrintMatriz.setResizable(false); ventanaPrintMatriz.setVisible(true); } } class Operaciones { public Matriz sumaMat(Matriz m1, Matriz m2) { Matriz m3; m3 = new Matriz(m1.ren, m1.col); for(int i=0;i<m1.col;i++) for(int j=0;j<m1.ren;j++) m3.pos[i][j]=m1.pos[i][j]+m2.pos[i][j]; return m3; } public Matriz restaMat(Matriz m1, Matriz m2) { Matriz m3; m3 = new Matriz(m1.ren, m1.col); for(int i=0;i<m1.col;i++) for(int j=0;j<m1.ren;j++) m3.pos[i][j]=m1.pos[i][j]-m2.pos[i][j]; return m3; } public Matriz multiplicaMat(Matriz m1, Matriz m2) { Matriz m3; m3 = new Matriz(m1.ren, m2.col); for(int i=0;i<m1.ren;i++) for(int j=0;j<m2.col;j++) { m3.pos[i][j]=0; for(int k=0;k<m1.col;k++) m3.pos[i][j]+=(m1.pos[i][k]*m2.pos[k][j]); } return m3; } public Matriz transpuesta(Matriz m1) { Matriz m3=new Matriz(m1.col,m1.ren); for(int i=0;i<m1.col;i++) for(int j=0;j<m1.ren;j++) m3.pos[i][j]=m1.pos[j][i]; return m3; } } class ValidacionesMatrices { public boolean validaSumayResta(Matriz m1, Matriz m2) { if((m1.ren==m2.ren) && (m1.col==m2.col)) return true; else return false; } public boolean validaMultiplicacion(Matriz m1, Matriz m2) { if(((m1.ren==m2.ren) && (m1.col==m2.col)) || (m1.col==m2.ren)) return true; else return false; } } public static void main(String[] args) { Practica2 practica2 = new Practica2(); practica2.inicializarComponentes(); } } Exc

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  • IIS 7 (Windows Server 2008) no entrega javascript ni css

    - by José Marcos García Espinosa
    Hace algunos días, jugando con las configuraciones del IIS, revolvíamos las opciones de compresión de contenidos. La intención era habilitar gzip para el contenido estático pero la cosa salió tan mal que el portal, en vez de reducir su tamaño por los contenidos comprimidos, lo "redujo" porque el servidor dejó de enviar los archivos javascript y las hojas de estilo al navegador. Después de estar buscando como hora y media, resultó que la explicación y la solución eran bastante sencillas (y ni siquiera las encontramos nosotros): Al estar cambiando las opciones de compresión de contenidos estáticos del IIS, se crearon unos archivos de configuración (web.config's) tanto en la carpeta de los archivos javascript como en la de las hojas de estilo, que es una estructura que el propio IIS no reconocía y dejaba la aplicación 'cortada', dejando fuera estas carpetas. Eliminar ambos archivos de configuración bastó para volver a visualizar el portal como se debía.. de la compresión, creo que ya ni seguimos buscando.

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  • Edubuntu boots in low graphics mode. with an Intel HD Graphics system

    - by user63957
    I have a HD Intel graphics card in my laptop. It was working fine the first few days with the new version Edubuntu. Now when you start, just before it goes to the part asking for the login password I think the OP means lightdm it sends me to a low graphics mode. Things I've tried: I tried Ctl+Alt+F1. Updated and installed fglrx from the terminal. All my work is all stored there. Please, if anyone knows how to fix this, tell me. Original version: hola tengo una tarjeta intel hd graphics en mi laptop estuve trabajando los primeros dias bien con la nueva version edubuntu solo que ahora cuando inicia y justo antes de que pase a la parte que me pide la contraseña me manda low graphic mode no se que hacer ya entre y le di ctr alt f1 y actualice tmb instale fglrx necesito obtener toda miinformacion todo mi trabajo esta ahi guardado, por favor si alguien sabe como solucionar este bug digame como, gracias, ciao.

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  • Error al instalar Visual Studio 2008 en Windows 7

    - by José Marcos García Espinosa
    Post/Install() failed in ISetupManager::InternalInstallManager() with HRESULT -2147023293. - Es el mensaje que aparece en la descripción del error o en los archivos de log. Algunos dicen que si buscas más a detalle encuentras el problema. Después de reintentar la instalación como 8 veces, desinstalando cada vez más cosas, te encuentras con que la solución es sencilla: ¡Desinstala Office! No sé por qué, pero creo que Microsoft asume que si eres un desarrollador, primero instalarás VS2008 y después Office; si lo haces al revés, se generan problemas de compatibilidad (ya que VS2008 instala herramientas de interoperabilidad/desarrollo/conexión con Office, Visual Studio Tools for Office) y la instalación no pasa a veces ni del .net Framework. A final de cuentas, creo, ésta es una medio sencilla.

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  • Presentaciones del Customers Day sobre E-Business Suite

    - by [email protected]
    Ya están disponibles las presentaciones del Customers Day sobre E-Business Suite, celebrado el pasado 10 de marzo de 2010. En ellas se tratan temas como la política de soporte de por vida de Oracle, la Release 12 del software, las Aplicaciones Analíticas Preconstruidas e Hyperion. Presentacion EBS Customers Day 1 Lifetime SupportView more presentations from oracledirect. Presentacion EBS Customers Day 2 Vision R12View more presentations from oracledirect. Presentacion EBS Customers Day 3 Casos de Exito R12View more presentations from oracledirect. Presentacion EBS Customers Day 4 Aplicaciones Analiticas PreconstruidasView more presentations from oracledirect. Presentacion EBS Customers Day 5 HyperionView more presentations from oracledirect.

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  • What is meant by "Repeat Business" ?

    - by vinoth
    Repeat Business obviously happens because the company has a great product or a great service. In the software industry, do companies make the code base complex enough so that the maintenance comes back to them? I have heard of cases where companies say "ya this code base has minor errors, let's ship them anyway, and let the customers come back for another change request on these". Then they would sometimes charge the customer for that. This question is specific to the software services industry. Do these things happen in the real world? I am trying to understand the business process.

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  • Silverlight Cream for April 09, 2010 -- #835

    - by Dave Campbell
    In this Issue: Tim Heuer, smartyP, and Kevin Moore. From SilverlightCream.com: Using XNA libraries in your Silverlight Windows Phone 7 applications Tim Heuer has a post up using XNA on WP7 to hook up sound to a 'normal' Silverlight WP7 app... so there ya go! Example Pivot Control for Windows Phone 7 smartyP acknowledges that he said he was done with the Pivot control for WP7 and yes he realizes we're most likely going to get one from Microsoft, but just like the rest of us, he just couldn't leave it alone :) Bag of Tricks Update (two years in the making) I found this via Cool view transitions using ZapScoller by Rudi Grobler, and it points at Kevin Moore's Bag of Tricks Update for Silverlight 4 and WPF ... just the fact that Robby Ingebretsen is using it means we should all rush to CodePlex and absorb it :) Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • ¿ cual elegir gnome o KDE?

    - by Guillermo Huber
    hola gente soy nuevo en esto de linux. llevo unos dias estudiandole a el Ubuntu 14.04 64Bits. el tema es que quise bajar un programa y me daban varias obciones entre gnome o KDE. ¿ desconosco si tengo alguno de estos instalados? ¿y quisiera que me podrian decir cual es mejor para ustedes, y como instalarlo de paso? PD: ssi pueden adjuntar un video de los pasos a seguir para instalar cualquiera de los dos me seria muy util, ya que todavia soy novato en esto. gracias

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  • Directorio de Compañía disponible en Peoplesoft HCM 9.1

    - by julio.rodriguez(at)oracle.com
    Desde finales de Septiembre ya tenemos disponible la nueva funcionalidad de Directorio de Compañía. Para poder acceder a ésta nueva funcionalidad basta con subir de versión nuestra herramienta de desarrollo  PeopleTools a la versión  8.51.02, para todos los clientes en versión 9.1. Este es el primer "Feature Pack" que se ha liberado en la versión 9.1 y estoy seguro de que no será el último. De esta manera queremos premiar la fidelidad de nuestros clientes haciéndoles llegar nuevas funcionalidades sin coste adicional de licencias ni soporte.  

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  • Is there a grey-area with Copyright infringement?

    - by Z.O
    Currently a student, I'm trying to put together a game for iOS. From everywhere I've read, it seems any game's sound and art are apart of their IP and covered under their Copyright. That being said, say I wanted to use the coin sound effect from the original Mario (less than 1s long and used sparsely)... would anyone really care? Having no experience with this, I'm just wondering if cases like this are treated like "Ya you're driving slightly over the speed limit, but nobody cares" or as "you stole that car". Thanks for any insight anyone may be able to provide.

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  • KScope - so much going on!

    - by jgelhaus
    Greetings from Kscope 11!  We are enjoying catching up with old friends as well as meeting new ones. There's so many excellent examples of superior development with Oracle Database all over the conference.  Our users never cease to amaze us. There are too many to mention in this short area, but a few highlights include: Monday night's Guru Panel of Tom Kyte, Steve Feuerstein and Cary Millsap ODTUG Board member Monty Latiolais interview with Oracle vp of Database Development, Mike Hichwa Fabulous time aboard the Queen Mary!! See all the Kscope videos As the conference winds down, we thank everyone (wonderful planning and conference execution) as well as bid our goodbyes.  It's just for a short while as we make plans to attend Kscope12 - see ya'll in San Antonio!

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  • Day 1 of Oracle OpenWorld 2012 September 30

    - by Maria Colgan
    Howard Street in San Francisco is closed. The large Oracle tent is up! Attendees are arriving by the plane load at SFO. It can only mean one thing .... That's right!  Oracle OpenWorld officially starts today with the Oracle Users Forum. Ton's of great technical sessions selected by the Oracle User Groups get under way this morning at 8 am (Doh!). And of course, Larry's keynote is this evening 5:00 pm–7:00 pm, Moscone North. A must see, as he is bound to make some exciting announcements to get the show started! Hope to see ya there!   +Maria Colgan  

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  • ODI y Las funciones GROUP BY, SUM, etc

    - by Edmundo Carmona
    Las bondades de ODI Pase un buen rato buscando la forma de usar la función SUM en ODI, encontré que se puede modificar el KM para agregar la función "GROUP by" y agregar una función jython en el atributo destino, pero esa solución es muy "DURA" ya que si agregamos en el futuro un nuevo atributo, tendríamos que cambiar nuevamente el KM.  Pues bien la solución es bastante más fácil, resulta que podemos agregar la función SUM, MIN, MAX, etcétera a cualquier atributo numérico y ODI automáticamente agregará la función GROUP by con el resto de los atributos. Por ejemplo. La tabla destino tiene los siguientes atributos y asignaciones (mapeos en spanglish): T1.Att1 = T2.Att1 T1.Att2 = T2.Att2 T1.Att3 = SUM(T2.Att3)  ODI crea este Quey: Select T2.Att1, T2.Att2, SUM(Att3) from Table2 T2 group by T2.Att1, T2.Att2 Listo Nada más sencillo.

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  • Screen problems

    - by Erick
    I struggled a lot in order to install Ubuntu because of a problem with the video drivers caused by when installing the driver and after turning it on it just appears a black screen, which worked for me was to use the terminal with sudo setpci -s 00:02.0 F4.B=0 and the screen starts, but after rebooting the changes won't remain and I have to run that command again. My question is: How can I make the changes permanent and not to be in need to execute that command always when I shut it down? Original Question in Spanish: Problemas con pantalla He batallado mucho al instalar ubuntu por el problema con el controlador de video ya que al instalarlo al encenderla aparece solo una pantalla negra lo que me funciono fue usar desde consola sudo setpci -s 00:02.0 F4.B=0 enciende la pantalla pero al reiniciarla los cambios no se quedan guardados y tengo que volver a ejecutar ese comando mi pregunta es ¿como hacerle para que los cambios queden igual y no tener que estar ejecutando eso siempre que la apago?

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  • How Did we get from CLI to Graphics?

    - by Nathaniel Bennett
    I'm confused when looking into graphics - specifically with operating systems. I mean, how can a computer render a CLI/console along with a GUI. GUI's are completely different from Text. and How Can we have GUI windows that Display Text interfaces, ie how can we have CLI in modern Graphics Operating system - that's what I'm mainly trying to grip on to. How Do Graphic's get rendered to display? is there some sort of memory address that a GPU access which holds all pixel data, and there system's within OS's that Gather the pixel position of Windows and Widgets, along with the Z Index and rasterize them to that memory address, which then the GPU loads to the screen? How About the CLI's integrated with Graphics? how does the OS Tell the GPU that a certain part of the screen wants to display text while the rest, whats to display pixel data? it's all very confusing. Shed some light in it, will ya?

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  • Motorola India meets Mayan calender dead line – earlier than predicted

    - by Boonei
    My favorite cell phone maker Moto is closing it doors in India. Plan is to  have their service shops open. If you still want to grab the last living decendent of the phone in India there is good news “would continue to sell its phones till stocks are exhausted while service centers would continue to function”. Ya !  lock up in your safe, wait 20 years, then sell this antique for a fortune. There is will be staff cut and Moto promised to help employees at these difficult times. India is one of the most sort out market for mobile makers, what is running in Googles mind ? May be world is falling apart like Mayans predicted ?    

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  • Top 10 Vulnerabilidades de Seguridad en el WEB.CONFIG- PARTE 1

    - by Jason Ulloa
    Durante estos post, mostraré los 10 problemas o errores de configuración en el web.config que provocan grandes vulnerabilidades en las aplicaciones. Estos errores, en su mayoría vienen dados por desconocimiento a fondo del manejo de las secciones de configuración de nuestras aplicaciones. En esta primera parte, veremos los primeros 5 de ellos. 1. El modo Custom Errors Este es el primero de nuestra lista, ya que, será uno de los que casi siempre habilitemos cuando estamos desarrollando una aplicación web y que es de mucho cuidado. Una etiqueta común y vulnerable de esta configuración sería <configuration> <system.web> <customErrors mode="Off">   Una forma de corregir la vulnerabilidad que se expone a continuación sería cambiando la etiqueta por <configuration> <system.web> <customErrors mode="RemoteOnly">

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  • Encryption Password help!

    - by Carlos L.
    Ok so let me summarize this up. I encrypted my Home to protect against hackers of course when I first installed Ubuntu. It loaded up the Terminal and was attempting to show me my encryption password incase it ever needed to be used. So I thought "Ehh what the heck, I can find it out later..." So I closed Terminal and went on with the (amazing!) Ubuntu life. But now I am having to install Java JDK 7.0.0.4 onto my computer to ya know, play games and such. But it is asking for my password for the encrypted Home folder but it never gave it to me... HELP!!! Does anyone remember the command for Terminal to give you you're randomly generated Encryption password pop up on the famous purple window? Please give legitimate answer and fast please!

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  • MVVM Its Not Kool-Aid*

    [ Revised with C# and VB.NET code] Okay, first, understand that Im in the position of running through the streets yelling at folks cmere! ya gotta see this! and what Im pointing to is the incredible new invention of a laptop computer. Something that is undeniably amazing and cool, but everyone else on my block has [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • MVVM Its Not Kool-Aid*

    [ Revised with C# and VB.NET code] Okay, first, understand that Im in the position of running through the streets yelling at folks cmere! ya gotta see this! and what Im pointing to is the incredible new invention of a laptop computer. Something that is undeniably amazing and cool, but everyone else on my block has [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Can I force JAXB not to convert " into &quot;, for example, when marshalling to XML?

    - by Elliot
    I have an Object that is being marshalled to XML using JAXB. One element contains a String that includes quotes ("). The resulting XML has &quot; where the " existed. Even though this is normally preferred, I need my output to match a legacy system. How do I force JAXB to NOT convert the HTML entities? -- Thank you for the replies. However, I never see the handler escape() called. Can you take a look and see what I'm doing wrong? Thanks! package org.dc.model; import java.io.IOException; import java.io.Writer; import javax.xml.bind.JAXBContext; import javax.xml.bind.JAXBException; import javax.xml.bind.Marshaller; import org.dc.generated.Shiporder; import com.sun.xml.internal.bind.marshaller.CharacterEscapeHandler; public class PleaseWork { public void prettyPlease() throws JAXBException { Shiporder shipOrder = new Shiporder(); shipOrder.setOrderid("Order's ID"); shipOrder.setOrderperson("The woman said, \"How ya doin & stuff?\""); JAXBContext context = JAXBContext.newInstance("org.dc.generated"); Marshaller marshaller = context.createMarshaller(); marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE); marshaller.setProperty(CharacterEscapeHandler.class.getName(), new CharacterEscapeHandler() { @Override public void escape(char[] ch, int start, int length, boolean isAttVal, Writer out) throws IOException { out.write("Called escape for characters = " + ch.toString()); } }); marshaller.marshal(shipOrder, System.out); } public static void main(String[] args) throws Exception { new PleaseWork().prettyPlease(); } } -- The output is this: <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <shiporder orderid="Order's ID"> <orderperson>The woman said, &quot;How ya doin &amp; stuff?&quot;</orderperson> </shiporder> and as you can see, the callback is never displayed. (Once I get the callback being called, I'll worry about having it actually do what I want.) --

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  • Map GEO API Services

    - by Lee
    Does anyone know of a good even paid API for mapping to get GEO stuff. I am really frustrated with google map giving poor results even though it beats all others. I have tried so far. Google Yahoo BING Mapquest Multimap Can anyone suggest other good services ? Hope ya CAN !

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