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  • Why does R sometimes stop displaying output?

    - by Winston C. Yang
    Sometimes R stops displaying output. I type the number 1, followed by the return key, and nothing appears. This situation occurred after I pressed the "STOP" icon in the window, which is for stopping long calculations. I'm using R 2.11.0 on a Mac. Does pressing "STOP" cause R to stop displaying output? How do I get R to display output again?

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  • django sort by manytomany relationship

    - by Marconi
    I have the following model: class Service(models.Model): ratings = models.ManyToManyField(User) Now if I wanna get all the service with ratings sorted in descending order I did something: services_list = Service.objects.filter(ratings__gt=0).distinct() services_list = list(services_list) services_list.sort(key=lambda service: service.ratings.all().count(), reverse=True) As you can see its a three step process and I don't feel right about this. Anybody who knows a better way to do this?

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  • Can someone explain how this works?

    - by Dan Howard
    Key in the first three digits of your phone number (NOT the Area code...) Multiply by 80 Add 1 Multiply by 250 Add to this the last 4 digits of your phone number Add to this the last 4 digits of your phone number again. Subtract 250 Divide number by 2 Do you recognize the answer??

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  • Wordpress post query php custom field conditional

    - by Andy
    Here's the situation: In wordpress I'm trying to reset a post WP_Query so that I can rewrite the post link based on whether or not a custom field exists in the post. I'm trying to give the post a NEW link in the custom field. All I've managed to do here is kill the link entirely. Any and all help is greatly appreciated, I'm pretty green to php. Here's my WP_Query: <?php $recentPosts = new WP_Query(); $recentPosts->query('showposts=3'); ?> <?php while ($recentPosts->have_posts()) : $recentPosts->the_post(); ?> <div <?php post_class() ?> id="post-<?php the_ID(); ?>"> <?php $attribute = the_title_attribute(); $title = the_title(); $key = 'NewPostLink'; $newLink = get_post_meta( $post->ID, $key, TRUE ); if ($newLink != '') { $theLink = get_permalink ($post->ID ); if (has_post_thumbnail()) { $image = get_the_post_thumbnail( $post->ID ); echo '<div class="thumbnailbox"><div class="thumbnail"><a href="'.$theLink.'">'.$image.'</a></div></div>'; echo '<h2><a href="'.$theLink.'" rel="bookmark" title="Permanent Link to '.$attribute.'">'.$title.'</a></h2>'; } else { echo '<h2><a href="'.$theLink.'" rel="bookmark" title="Permanent Link to '.$attribute.'">'.$title.'</a></h2>'; } } else { $theLink = $newLink; if (has_post_thumbnail()) { $image = get_the_post_thumbnail( $post->ID ); echo '<div class="thumbnailbox"><div class="thumbnail"><a href="'.$theLink.'">'.$image.'</a></div></div>'; echo '<h2><a href="'.$theLink.'" rel="bookmark" title="Permanent Link to '.$attribute.'">'.$title.'</a></h2>'; } else { echo '<h2><a href="'.$theLink.'" rel="bookmark" title="Permanent Link to '.$attribute.'">'.$title.'</a></h2>'; } } ?> <small><?php the_time('F jS, Y') ?></small> <div class="entry"> <?php the_excerpt(); ?> </div> </div> <?php endwhile; ?>

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  • What's the best way to aggregate the boolean values of a Python dictionary?

    - by Thierry Lam
    For the following Python dictionary: dict = { 'stackoverflow': True, 'superuser': False, 'serverfault': False, 'meta': True, } I want to aggregate the boolean values above into the following boolean expression: dict['stackoverflow'] and dict['superuser'] and dict['serverfault'] and dict['meta'] The above should return me False. I'm using keys with known names above but I want it to work so that there can be an infinite number of unknown key names.

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  • what means subject in certificate?

    - by George2
    Hi guys, The related link is this MSDN article. I am always confused about the term "subject", for example, sk option "Specifies the subject's key container location", sr option "Specifies the subject's certificate store location". What exactly mean subject? The certificate owner? The certificate issuer (e.g. the root CA which issues the certificate)? Or something else? regards, George

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  • How to use Linq To Sql to get Users who has less than 2 photos?

    - by Mike108
    The scenario is I want to get the users who has less than 2 photos. There are two table: [Users] (UserId, UserName) [UserPhotos] (PhotoId, PhotoName, UserId) UserId is a Foreign Key but I do not want to use association like user.Photos. A user may have none photo in the [UserPhotos] table. How to use Linq To Sql to get List<User> who has less than 2 photos?

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  • How to use java property files?

    - by Click Upvote
    So I have a list of key/value pairs of configuration values I want to store as java property files, and later load and iterate through. Questions: Do I need to store the file in the same package as the class which will load them, or is there any specific location where it should be placed? Does the file need to end in any specific extension or is .txt ok? How can I load the file in the code And how can I iterate through the values inside?

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  • Improving Javascript Load Times - Concatenation vs Many + Cache

    - by El Yobo
    I'm wondering which of the following is going to result in better performance for a page which loads a large amount of javascript (jQuery + jQuery UI + various other javascript files). I have gone through most of the YSlow and Google Page Speed stuff, but am left wondering about a particular detail. A key thing for me here is that the site I'm working on is not on the public net; it's a business to business platform where almost all users are repeat visitors (and therefore with caches of the data, which is something that YSlow assumes will not be the case for a large number of visitors). First up, the standard approach recommended by tools such as YSlow is to concatenate it, compress it, and serve it up in a single file loaded at the end of your page. This approach sounds reasonably effective, but I think that a key part of the reasoning here is to improve performance for users without cached data. The system I currently have is something like this * All javascript files are compressed and loaded at the bottom of the page * All javascript files have far future cache expiration dates, so will remain (for most users) in the cache for a long time * Pages only load the javascript files that they require, rather than loading one monolithic file, most of which will not be required Now, my understanding is that, if the cache expiration date for a javascript file has not been reached, then the cached version is used immediately; there is no HTTP request sent at to the server at all. If this is correct, I would assume that having multiple tags is not causing any performance penalty, as I'm still not having any additional requests on most pages (recalling from above that almost all users have populated caches). In addition to this, not loading the JS means that the browser doesn't have to interpret or execute all this additional code which it isn't going to need; as a B2B application, most of our users are unfortunately stuck with IE6 and its painfully slow JS engine. Another benefit is that, when code changes, only the affected files need to be fetched again, rather than the whole set (granted, it would only need to be fetched once, so this is not so much of a benefit). I'm also looking at using LabJS to allow for parallel loading of the JS when it's not cached. So, what do people think is a better approach? In a similar vein, what do you think about a similar approach to CSS - is monolithic better?

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  • Losing context from JQuery post with ASP.Net MVC

    - by Dan
    I have a JQuery dialog box on a page that calls something like this: $.post("/MyController/MyAction", { myKey: key} //... And this successfully gets here: [HttpPost] public ActionResult MyAction(int myKey) { //do some stuff return RedirectToAction("AnotherAction"); } The problem is that the RedirectToAction has no effect on the webbrowser. I am guessing this is because the JQuery post is kinda on a different 'tread' so it doesn't know where to send the response? How do I get the browser to load the new response?

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  • ValidatorResources not found in application

    - by jojolapin
    I had been told to deploy a *.war file within tomcat and this application should be working fine. But for an unknown reason all I get is: System Exception: javax.servlet.jsp.JspException: ValidatorResources not found in application scope under key "org.apache.commons.validator.VALIDATOR_RESOURCES" I know that this application has been developed with STRUTS and I can obtain the source. But as I am not a specialist in this field, I come to ask for some help. Could you tell me what file could generate this exception please?

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  • numpy array mapping and take average

    - by user566653
    Dear all, I have three array value = np.array ([1, 3, 3, 5, 5, 7, 3]) index = np.array ([1, 1, 3, 3, 6, 6, 6]) data = np.array ([1, 2, 3, 4, 5, 6]) and want to take average for item of "value" by array "index", and assign a new array with value of "data", such as [2, nan, 4, nan, nan, 5] first value is the average of 1st and 2nd of "value" second value is nan because there is not any key in "index" third value is the average of 3rd and 4th of "value" ... Thanks for your help!!! Regards, Roy

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  • Perl, convert hash to array

    - by Mike
    If I have a hash in Perl that contains complete and sequential integer mappings (ie, all keys from from 0 to n are mapped to something), is there a means of converting this to an Array? I know I could iterate over the key/value pairs and place them into a new array, but something tells me there should be a built-in means of doing this.

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  • Maven site deploy authentication error with scp

    - by Navi
    I get Auth fail error when running mvn -X site:deploy. org.apache.maven.wagon.authentication.AuthenticationException: Cannot connect. Reason: Auth fail It seems that the correct private key is used and I can scp files normally to the project site directory using scp on Ubuntu. What can be causing this?

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  • Where to store Android preference keys?

    - by pixel
    When I create preference activity I define all preferences in xml file. Every preference has a key defined in this xml. But when I access preference I write: SharedPreferences appPreferences = PreferenceManager.getDefaultSharedPreferences(this); boolean foo_value = appPreferences.getBoolean("foo_key_defined_in_xml", false); Is there any way to avoid acessing "foo_key_defined_in_xml" in hard-coded way? Maybe there is a possibility to access it in R style way?

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  • Why does VerticalScrollBarVisibility not work in a style in Silverlight?

    - by Edward Tanguay
    VerticalScrollBarVisibility works when I define it inline like this: <UserControl x:Class="TestScrollBar.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"> <UserControl.Resources> <Style TargetType="TextBox" x:Key="EditListContainerContentMultiLineTwoColumn"> <Setter Property="AcceptsReturn" Value="True"/> <Setter Property="Width" Value="400"/> <Setter Property="Height" Value="300"/> <Setter Property="IsReadOnly" Value="False"/> <Setter Property="Margin" Value="0 0 0 20"/> <Setter Property="HorizontalAlignment" Value="Left"/> <Setter Property="TextWrapping" Value="Wrap" /> </Style> </UserControl.Resources> <Grid x:Name="LayoutRoot" Background="White" Margin="10"> <StackPanel HorizontalAlignment="Left"> <TextBox Text="this is a test" Style="{StaticResource EditListContainerContentMultiLineTwoColumn}" VerticalScrollBarVisibility="Auto" /> </StackPanel> </Grid> </UserControl> But when I put VerticalScrollBarVisibility in a style, it shows me a blank screen: <UserControl x:Class="TestScrollBar.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"> <UserControl.Resources> <Style TargetType="TextBox" x:Key="EditListContainerContentMultiLineTwoColumn"> <Setter Property="VerticalScrollBarVisibility" Value="Auto"/> <Setter Property="AcceptsReturn" Value="True"/> <Setter Property="Width" Value="400"/> <Setter Property="Height" Value="300"/> <Setter Property="IsReadOnly" Value="False"/> <Setter Property="Margin" Value="0 0 0 20"/> <Setter Property="HorizontalAlignment" Value="Left"/> <Setter Property="TextWrapping" Value="Wrap" /> </Style> </UserControl.Resources> <Grid x:Name="LayoutRoot" Background="White" Margin="10"> <StackPanel HorizontalAlignment="Left"> <TextBox Text="this is a test" Style="{StaticResource EditListContainerContentMultiLineTwoColumn}" /> </StackPanel> </Grid> </UserControl> In WPF it works works fine. How can I get VerticalScrollBarVisibility to work in a style?

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  • How to specify blob type in MS Access?

    - by Firat
    How to specify blob type in MS Access? I have office 2007 installed. I am using jdbc, but this should not matter for the SQL query I am passing. Tried to pass a length to it, or FILE type, did not help. CREATE TABLE mytable ( [integer] INTEGER not null, [string] VARCHAR (255), [datetime] DATETIME, [boolean] BIT, [char] CHAR, [short] SHORT, [double] DOUBLE, [float] FLOAT, [long] LONG, [blob] BLOB, // does not work Primary Key ([integer]) )

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  • Spring custom error message

    - by Ale
    I want to set a custom error message via @Controller, there is something like Struts saveMessages(...) in spring? for example: ActionErrors actionErrors = new ActionErrors(); actionErrors.add("error", new ActionMessage("error.missing.key", messageResources.getMessage("label.username"), messageResources.getMessage("label.password"))); saveErrors(request, actionErrors);

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