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• Java image with double value pixel

  - by marionmaiden

  Actually I'm working with BufferedImages, that provide me pixel values in int type. Do you know a Java object to represent an image that the pixel value in double or float type?

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• Converting Numpy Lstsq residual value to R^2

  - by whatnick

  I am performing a least squares regression as below (univariate). I would like to express the significance of the result in terms of R^2. Numpy returns a value of unscaled residual, what would be a sensible way of normalizing this. field_clean,back_clean = rid_zeros(backscatter,field_data) num_vals = len(field_clean) x = field_clean[:,row:row+1] y = 10*log10(back_clean) A = hstack([x, ones((num_vals,1))]) soln = lstsq(A, y ) m, c = soln [0] residues = soln [1] print residues

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• what data type should I use for storing small decimal value

  - by sean717

  hi, what data type should I use to store small decimal value? Ranging from -50.00 to 50.00? Thanks,

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• Getting the old value of a asp.net control on postback

  - by D3no

  I want to be able to find the old value of a asp.net control (textbox, checkbox etc) without relying on events (e.g. OnTextChange event). Something like "someTextboxControl.OldText" would be perfect! I imagine that it is stored in the viewstate and need to somehow get at it via a custom control. Any ideas?

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• Dynamic Grand-total with lists and multi-value parameters

  - by deeg

  Basically I've created a list that subtotals according to the group. I then created a multi-value parameter that allows the user to choose which group is shown in the report. How can I get the grand total to reflect the parameter since its currently outside of the list?

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• MSBuild find value in file

  - by zachary

  So I run my task with ccnet and my task creates files. What is the best way to read the file and identify if there is a certain value in it from msbuild??

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• comparing Session value problem in php.

  - by aamir Fayyaz

  if ($_SESSION['user_email']!=$_SESSION['ship_user_email']) { $to= $_SESSION['ship_user_email']; mail($to,$subject,$mail_html,$headers); } there is problem in comparing values of both session. value is different but code not working.

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• Getting the selected option value in jQuery

  - by misha-moroshko

  I would like to print the selected values of all selects using jQuery. I did it like this, but I feel that there is a nicer way to write the same. Am I right ? $("select").each(function() { alert(this.options[this.selectedIndex].value); });

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• Inserting a null value into the database.

  - by J Harley

  Good Morning, Say I have an insert statement: Insert INTO tblTest (fieldOne,FieldTwo,fieldThree) VALUES ('valueOne','valueTwo','null') This statement doesn't seem to want to insert a null value into the database... I have also tried to insert the word "nothing". Has anyone any ideas how to make this work? I am using SQL server 2005.

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• using the selected value of a drop down before form submission

  - by aeonsleo

  Hi, i am using a dropdown in php which asks for user_category before creating the user. Upon selection of the category further text boxes are to be created dynamically depending upon the selection. I know how to get the selected value from $_POST but here i need it befor form submission.Pls help

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• Get The value of text Field while form submit in php

  - by Ramesh

  how to get the value of input box while submitting the form in php i need the url like this www.example.com/te/?a=test&firstname=blabla <form action="te/?a=test" method="post"> <input type="text" name="firstname" /> <input type="submit" name="button" /> </form>

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• PHP function, return by value or by reference?

  - by Andree

  Hi there! When I use return statement in PHP, will the result be returned by value or by reference? Thanks! Andree.

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• JavaScript function to validate an integer value

  - by Psyche

  Hello, I'm building a shopping cart and I would like to use a JavaScript function to validate user input when entering the quantity value in the quantity text input. I would like to allow the entering of integer values only (no floats, no other characters). I know that I can apply this function using onKeyUp event and also I found isNaN() function, but it returns true even for floats (which is not ok). Can you guys help me out with this one? Thanks.

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• F# how to return have value a tuple or null

  - by mamu

  let retVal = if reader.Read() then (reader.GetString(0), getBytesData reader 1, reader.GetDateTime(2)) else null F# don't allow null to returned How can i have value return as a tuple or a null?

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• JDT ASTParser to get the value of a string field

  - by Yasko

  Is there a way to use jdt ASTParser to get the value of a String field declared in a java file. Actually what I need is to resolve any possible dependencies from other classes e.g. public String str = "somethig"+SomeTherClass.SOMETHING_ELSE.

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• Jquery return value

  - by Anton

  I used a code: jQuery.fn.MyFunction = function(){ return this.each(function() { attributes = "test"; return attributes; });} But when I call var1 = $(this).MyFunction();alert(var1); I got an [object], but not the "test". How to allow jquery plugin return a some value?

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• return value of main() in windows

  - by sisis

  In Linux, the return value of the main function is stored in $?, and can be shown using echo $?. Is there something equivalent in Windows?

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• Getting rows which include a value with MySQL

  - by sundowatch

  I have a MySQL query which gets including some vars like that: messages TABLE receiver cols user1 rows : 1,3,5 user2 rows : 2,3 user3 rows : 1,4 I want to get rows which includes '3' value. So I will get 'user1' and 'user2'. I tried that but naturally it doesn't work. mysql_query("SELECT * FROM messages WHERE receiver='3'"); How can I do this?

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• How to get the textbox value in php?

  - by Nitz

  On my page. i have one textbox and one button. -- on the button click event. -- one function will be called. Now, How to get that value of textbox and store in php variable? this should be done in that function which we will call on button click.

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• jquery change not working incase of dynamic value change

  - by Binay

  In jQuery how can I track onchange event if the value of textbox is changing dynamically from some other event. I tried this but its not working: $("#txtbox").change(function(){ alert("change"); });

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• How to retrieve query string value from URL value stored in a variable?

  - by user187580

  Hello, $url = 'http://www.domain.com/file.php?dir=r&hl=100,200&ord=3&key=a+b+c'; If it were a url I could get value of hl by, say, $_GET['hl']. but how do I retrieve the same from $url string. Thanks.

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• getting rows which including a value with mysql

  - by sundowatch

  I have a mysq query which gets including some vars like that: messages TABLE receiver cols user1 rows : 1,3,5 user2 rows : 2,3 user3 rows : 1,4 I want to get rows which includes '3' value. So I will get 'user1' and 'user2'. I tried that but naturally it doesn't work. mysql_query("SELECT * FROM messages WHERE receiver='3'"); How can I do this?

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• NULL value in :conditions =>

  - by Horace Ho

  Contract.all(:conditions => ['voided == ?', 0]).size => 364 Contract.all(:conditions => ['voided != ?', 0]).size => 8 Contract.all.size => 441 the 3 numbers does not added up (364 + 8 != 441). What's the proper way write the :conditions to count the rows which the voided column value is NULL or equal to zero?

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• declare field without initial value in php?

  - by Charles

  I don't want to give an initial value. I want to set these later using the set method class Duck { var int id; var set = Array(); } Any idea how to declare without getting error?

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• Convert date/time string value to .NET DateTime

  - by stighy

  Hi guys, i've this string example value: Sun, 09 May 2010 11:16:35 +0200 I've to insert it into MySql Date/Time field. How can i convert it into .NET format (or Mysql format), so i can make my INSERT INTO mydate='2010-05-09 11:16:35' ? Thank you !

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