69 Posted Topics
 | Hi, I am new in pl/sql programming and I need your help. I would like to make a procedure. To be more specific, I have tables like the folowing TABLE1 ================================================ |COL1 | COL2 | COL3 | COL4 | COL5 | COL6 |COL7| =============================================== |600 | 140 | 2 | … |
| | Hi, I would like to do a presentation with a flipping page book. I am searching the Web but I can't find a freeware. Does everybody know one to help me ? I don't know flash programming |
| | Hi all, I would like to make program reading 300 lines form a file with 24 columns. the 24th column has an integer from 1 to 24, while the others columns are strings. I want to summarize in seperate files this (last) column For example, assdsd, sdsds, asdasda, asda ,asdad, …  |
| | Hi all, I have to make a project on my School until 18th of May. I am using resEdit to make graphics for a c++ program. But there ara a lot of cases that the program crashes. Could you help me ? I don't know to use resEdit good so … |
| | Hi, I have a problem with an xml file. I am trying to develop an xml file based on vra core 4.0 but when I check if my code is valid I take the following error. Could not open file: http://www.vraweb.org/projects/vracore4/vra-4.0-restricted.xsd (I use XML COPY EDITOR) A part of my … |
| | Hi, I am trying to make a timer applet when I click stop button to stop counting, disappear stop and appears continue button and when I click continue to continue the counting. My code is : [CODE] import java.applet.*; import java.awt.*; import javax.swing.*; public class Timer extends Applet implements Runnable … |
| | Hi, I am trying to make a program which reads 6 integers , insert into a file numbers1.txt then copy numbers1.txt content to numbers2.txt and finally print numbers2. The problem I have is that when I am trying to copy the file to another the system crashes. My code is …  |
| | Hi, I have a php array as the following format array([4]=>6 [8]=>12 [3]=>5) and I would like to add 6+12+5 The problem I have is that neither number of array cells nor array_keys are known. Thanks a lot |
| | Hi all, I am trying to install jcart shopping cart but I have some problems when I am trying to modify it. [URL="http://conceptlogic.com/jcart/"]jcart[/URL] I would like to have a button "save in database" instead of having button "checkout with paypal". And when I click in new button to open a … |
| | Hi all, I am trying two days now to insert a cart link on my page. It is a e-shop bookstore. I save my books in a database : +-------------+--------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +-------------+--------------+------+-----+---------+----------------+ | bookid | int(11) | NO … |
| | Hi all, I don't know css and I would like your help. I am trying to make an online bookstore. The problem I have with divs is that when I am trying to make a new all the below divs are moved down. I would like to add welcome guest … |
| | Hi all, I have a file .c and I would like to format the comments of file like that : /** Comment */ with a sed script The comments in my file is /* comment 1 */ /* comment 2 */ /** comment 3 */ I know to format file … |
| | Hi, I use a command with awk in bash shell so as to extract info from a file. [CODE]awk -F'[=,: ]' '{print /uid=/?$4:(/^telephoneN/)?$2:$3}' 1.txt[/CODE] the output is something like aaaa bbbb cccc dddd eeee ffff gggg tttt I would like to write this output in a file 2.xml [CODE]<xml> <name>aaaa</name> … |
| | Hi all, I just started to learn prolog. I wrote some facts and then some rules. I give to swi-prolog my question and solutions are appearing . I would like to ask if someone knows which stategy does swi-prolog use ? backward chaining or forward chaining ? Can I see …  |
| | Hi all, I am new in shell scripting and I need your help 1. I would like to make a list of files (no folders) of unix system which do not belong to root 2. I would like to make a list with directories of system which the first letter … |
| | Hi, I am new in neural networks and I would like to tell me a program that I can simulate networks (except Matlab). I have a train.txt and a test.txt file and I would like to make a multilayer perceptron with back propagation. Thanks a lot |
| | Hi all, I have a project in clips (fuzzy) and I would like to ask you something. I use a template (A and B are defined with low, normal, high): (deftemplate fuz (slot FA (type FUZZY-VALUE A)) (slot FB (type FUZZY-VALUE B)) ) then I initialise the variables (assert (fuz … |
| | Hi all, I have a file with data 300 lines. (in.txt) I want to make a program that seperates the file in two others (out1.txt, out2.txt). But I would like to do it with percentage. For example, Percentage (%): 50 and seperate the in.txt file in the middle but with … |
| | Hi all, I have an exercise in communication systems. I have to learn about Quantizers. PCM with Uniform Quantization and with non uniform quantization (Lloyd_MAX algorithm) When I make this in matlab, I have to compute SQNRS for N=2,4,6 bits. Does anybody know what I have to expect ? Thanks … |
| | Hi all, I want to read a file. The file is like that : 20 20 1 5 6 20 21 1 2 3 21 22 2 4 6 20 20 2 3 5 20 21 6 5 2 21 22 1 6 7 .... and I would like every … |
| | Hi, I have a problem with my code in C An error occurs with message : /usr/lib/gcc/x86_64-redhat-linux/3.4.6/../../../../lib64/crt1.o(.text+0x21): In function `_start': : undefined reference to `main' collect2: ld returned 1 exit status Does anyone know for it ? Thanks a lot |
| | Hi all, I am trying to read a file in C. The format of file is something like that : ----------------------------- <From: [email]sender@hotmail.com[/email]> Hellooooooooo. </from> <From: [email]george@gmail.com[/email]> What am I doing? nOwwwwwwwwwwwwww </from> ---------------------------- I would like to read the file and extract some info like number of emails , …  |
| | Hi, I found an exercise about memories in a site but I don't understand the solution. The exercise says : A word in a little-endian pc has value 3. If I transfer this value in big indian byte per byte what is the new value ? The answer is 2*(2^24). … |
| | Hi all, I have to implement from a general network a virtual ring. How can I make a vitrual ring ? Thanks in advance |
| | Hi all, I am trying to make a program but I have a problem. So I can't continue. I am using a struct like that : [CODE]typedef struct account { char fullname[40]; int id; int amount; char name[15]; } account; typedef struct parking_system { int pos; char name[15]; char description[80]; … |
| | Hi, I am trying to read a string using the function below. The problem I have is that I can't write space in my string. So strings like : "name fullanme" are rejected and returns only "name". [CODE] char *getstring(char *ret, int max) { char *ppp, *qqq; int invalid_characters=0; //fgets(ret,max,stdin); … |
| | Hi I am implementing a function that check if user is a man or woman. But it does not worl properly. I press e for example and appears two times Please press m/M for Man w/W for Also sometimes w/W/m/M are not recognised and appears the above. My cose is … |
| | Hi all, I am new in c++ programming and I am trying to make some examples But unfortunately I have some problems My code is : [CODE] #include <iostream> #include <string> using namespace std; int main() { string firstname, lastname, fullname; cout << "First name: "; cin >> firstname ; … |
| | Hi, I am trying to learn about JQUERY. So , I found some examples and I am trying to apply to my pages. But something goes wrong. Could you help me please ? For example 1.html [CODE] <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" … |
| | Hi all, I use glossy.js and I am trying to apply it in an image with the path like [CODE]<img src="../Users/admin/header1.gif" class="glossy"/>[/CODE] the effect is ok. But when I am trying this in a php code like [CODE] echo '<img src="../Users/$user[username]/$photo[filename]" class="glossy"/>'; [/CODE] then it does not work. I have … |
| | Hi all, I am student and in two days I gine exams Java. I need your help to understand the below exercise. I have to explain all the lines from class RunParent [CODE]class Parent { double value = 0; public Parent() { value = 1.0; System.out.println("Parent value " +value); } … |
| | Hi, I would like to learn about joomla ! Does anyone have a tutorial or know a site about this ? I have found tutorial in youtube but it does not help me. I am trying to make a site like that [URL="http://www.fe-odeiopatron.gr/"]http://www.fe-odeiopatron.gr/[/URL] but I don't know how can I … |
| | Hi all, I am learning about suffix trees and I would like to ask if somebody knows .. what is the differences between probabilistic suffix tree and prediction suffix tree ?? I am trying to find some definitions but nothing Could you help me please to understand ? Thanks in … |
| | Hi, I use matlab for image processing. I have compressed some images and I would like to find the mse (mean square error) My code is : [CODE] main.m [MseRose4] = MseCompute(Rose,indexedRose4); [/CODE] [CODE] MseCompute.m function [MSE] = MseCompute(image1,image2) MSE = sum( sum((image1 - image2).^2)); MSE = MSE/(size(image1, 1)* size(image2, … |
| | Hi all, I would like to make a method that replace from a string the character k with x if the number of characters k is bigger than the x number, and the opposite replace. My code is : [CODE] class Replacing_class { public static String changeString(String str) { char … |
| | Hi, I am newbe in matlab and I am trying to make a program about hough transform in a picture. Unfortunately something is wrong so the result is a white picture. My code is attached. Thanking you in advance |
| | Hi, I want to make a game that I saw in internet but via applet code (and with move counter). The game is [URL="http://leepoint.net/notes-java/examples/games/slidepuzzle/slidepuzzle.html"]http://leepoint.net/notes-java/examples/games/slidepuzzle/slidepuzzle.html[/URL] Could someone help me please ???  |
| | Hi, I am trying to do an exercise on weka. I open file iris.arrf from data folder of weka and I made a clustering with Cobweb algorithm (cluster mode useing training set and then classes to cluster evaluation). When I use training test I take as output a tree with … |
| | Hi, I do a homework about image filtering. I have to make some comparisons between my images. So I decided to use subplot function. My code is [CODE]subplot(3,2,[1 3 5]) imshow(a); hold off subplot(3,2,2) imshow(b); hold off subplot(3,2,4) imshow(c); hold off subplot(3,2,6) imshow(d); hold off saveas(gcf,'compare'); [/CODE] After that I … |
| | Hi, I am trying to learn creating my exceptions in java. My classes are : [CODE] public class Test { public static void main(String args[]) { Test et = new Test(); int x1=5; int x2=0; try { et.printResults(x1, x2); } catch (DivideByZeroException dbz) { System.out.println(dbz.toString()); dbz.printStackTrace(); } finally { System.out.println("The … |
| | Hi, I am trying to learn exceptions using "throws". So , my code is [CODE]public class A { public static void main(String args[]) { A a = new A(); int x1; int x2; x1 = 7; x2 = 0; a.printer(x1, x2); } void printer(int x1, int x2) throws ArithmeticException{ System.out.println("Add: … |
| | Hi, I am trying to write to a .txt file an integer but the characters I see when I open the file are strange. Could you tell me what happens ?? [CODE] import java.io.*; public class A { public static int readInt() { byte b[] = new byte[16]; String str; … |
| | Hi all, I want to generate 100 numbers (-1 , 0 , 1), which follows uniform distribution, in matlab. How can I do it ?? And another question If I would like to generate a normal distribution with mean value 0.5 and variance 4 , is there function ?? Thanks … |
| | Hi all, I have to make a function which take as parameter two arrays and merge in one new. For example int array1[][] = {{1 , 2, 3, 4}, {2, 3, 4, 5}}; int array2[][] = {{5 , 6, 7, 8}, {6, 7, 8, 9}}; To take as result arraynew[][] …  |
| | Hi, I am trying to install an open source erp but I don't know how. It is a greek erp called Putheus. [URL="http://www.snigel.gr/pytheus/wiki/PInstall"]http://www.snigel.gr/pytheus/wiki/PInstall[/URL] Could someone help me with some screenshots. Please PS : I am working with windows |
| | Hi, I have to implement in C an distibuted algorithm, which counts the number of processes in a full-connected network when happens f byzantine faults. Could you help me with the algorithm ? Only a basic idea! I don't want the implementation. I am looking in web and I found … |
| | Hi, I would like to make two icons in my page so as to click on them and increase or decrease the font size of paragraph. The problem I have is that I want to change the size only for a paragraph. My paragraph's text is from a database. So …  |
| | Hi, I am student and I have to make an exercise about open source erp's. To be more specific I have to explain how an open source erp works. Does anyone know online open source erp's ? Can I download it ?? Thanks a lot |
| | Hi, I want to make a program that reads a string. But I would like to read only characters, neither numbers nor special characters(@,#$%^&*()!). Also, no spaces between characters. [CODE] #include <stdio.h> #include <string.h> char *enter_a_string(int maxcharacters) { char *ptr; int len; printf("Enter string : "); char array[50]; do{ scanf("%s",array); … |
| | Hi, I would like to make a database with users. But I take errors in the function Could someone help me please? My code is : [CODE]typedef struct user user; int id2=0; struct user { char name[20]; char last[20]; int id; }; int function(user* users, int id, char name[], char … |
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