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  • How to generate graphs and statistics from SQLAlchemy tables [Python]?

    - by Az
    Hi all, After running a bunch of simulations I'm going to be outputting the results into a table created using SQLAlchemy. I plan to use this data to generatw statistics - mean and variance being key. These, in turn, will be used to generate some graphs - histograms/line graphs, pie-charts and box-and-whisker plots specifically. I'm aware of the Python graphing libraries like matplotlib. The thing is, I'm not sure how to have this integrate with the information contained within the database tables. Any suggestions on how to make these two play with each other? The main problem is that I'm not sure how to supply the information as "data sets" to the graphing library. Thanks in advance.

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  • Reading value of cookie using curl in php

    - by james
    Hello, Im using Firefox 3.5.9. When i visit a url , it sets a cookie on my computer.I can see this cookie in Firefox by going to Tools-Options-Privacy,then clicking on 'Remove Individual Cookies'. There is a folder called xyz,which contains a cookie named JSessionId and which has some Content value . If i use curl in my php code to navigate to that website,is there a way i can read the Content value of that cookie programmatically ? . Some sample code would be really appreciated. Thank You

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  • CALayer: callback when animation ends?

    - by carloe
    Hi All, I have been running into some issues with animating multiple CALayers at the same time, and was hoping someone could point me in the right direction. My app contains an array of CALayer. The position of each layer is set to (previousLayer.position.y + previousLayer.bounds.height), which basically lays them out similar to a table. I then have a method that, every-time it is called, adds a new layer to the stack and sets its Y position is set to 0. The Y positions of all other layers in the array are then offset by the height of the new layer (essentially pushing all old layers down). What I am having problems with is preventing the adding of new layers until the previous animation has completed. Is there a way to tell when an implicit animation has finished? Or alternatively, if I use CABasicAnimation and animationDidFinish, is there a way to tell which object finished animating when animationDidFinish is called?

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  • WPF style problem with custom control and textbox-derived class

    - by Martin
    I had the following situation: main application has app.xaml, which sets the style for TextBox controls a custom control is implemented in a separate DLL, and uses several TextBox controls The main application's TextBox style is applied to the custom control's TextBox controls. Cool! My problem comes in because I need to use a class derived from TextBox in the custom control. Now the main app's TextBox style is no longer applied. Can the custom control DLL have something like "app.xaml" where I can set the style for all my derived TextBox controls? Or can the main application somehow set the style for all TextBox-derived classes? Thanks!

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  • how to get day name in datetime in python

    - by gadss
    how can I get the day name (such as : Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, and Sunday) in datetime in python?... here is my code in my handlers.py from django.utils.xmlutils import SimplerXMLGenerator from piston.handler import BaseHandler from booking.models import * from django.db.models import * from piston.utils import rc, require_mime, require_extended, validate import datetime class BookingHandler(BaseHandler): allowed_method = ('GET', 'POST', 'PUT', 'DELETE') fields = ('id', 'date_select', 'product_name', 'quantity', 'price','totalcost', 'first_name', 'last_name', 'contact', 'product') model = Booking def read(self, request, id, date_select): if not self.has_model(): return rc.NOT_IMPLEMENTED try: prod = Product.objects.get(id=id) prod_quantity = prod.quantity merge = [] checkDateExist = Booking.objects.filter(date_select=date_select) if checkDateExist.exists(): entered_date = Booking.objects.values('date_select').distinct('date_select').filter(date_select=date_select)[0]['date_select'] else: entered_date = datetime.datetime.strptime(date_select, '%Y-%m-%d') entered_date = entered_date.date() delta = datetime.timedelta(days=3) target_date = entered_date - delta day = 1 for x in range(0,7): delta = datetime.timedelta(days=x+day) new_date = target_date + delta maximumProdQuantity = prod.quantity quantityReserve = Booking.objects.filter(date_select=new_date, product=prod).aggregate(Sum('quantity'))['quantity__sum'] if quantityReserve == None: quantityReserve = 0 quantityAvailable = prod_quantity - quantityReserve data1 = {'maximum_guest': maximumProdQuantity, 'available': quantityAvailable, 'date': new_date} merge.append(data1) return merge except self.model.DoesNotExist: return rc.NOT_HERE in my code: this line sets the date: for x in range(0,7): delta = datetime.timedelta(days=x+day) new_date = target_date + delta

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  • function to find common rows between more than two data frames in R

    - by biohazard
    I have 4 data frames, and would like to find the rows whose values in a certain column do not exist in any of the other data frames. I wrote this function: #function to test presence of $Name in 3 other datasets common <- function(a, b, c, d) { is.B <- is.numeric(a$Name %in% b$Name) == 1 is.C <- is.numeric(a$Name %in% c$Name) == 1 is.D <- is.numeric(a$Name %in% d$Name) == 1 t <- as.numeric(is.B & is.C & is.D) t } However, the output is always t = 0. This means that it tells me that there are no unique rows in any data sets, even though the datas frames have very different numbers of rows. Since there are no duplicate rows in any of the data frames, I should be getting t = 1 for at least some rows in the biggest dataset. Can someone figure out what I got wrong?

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  • performing a javascript event without triggering that event handler

    - by bento
    In my latest code, I have an event handler for a focus on a textarea. When the user clicks on the textarea, that event-handler is triggered which sets some other DOM states based on the selected textarea. However, elsewhere in my program I want to programmatically set the focus of the textarea without triggering that event handler. I know Backbone, for instance, has a way to silently perform an action. My only pseudo-solution is to temporarily set a variable: var silence = true; And then, in my event handler, only perform the logic if silence is false. The handler is still triggered, but the logic doesn't run. Does anyone else know of better strategies for this?

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  • Font choices in International scenarios: multilingual vs unicode

    - by TravisO
    I have a website that will eventually display multiple languages. I notice the common fonts used in web CSS (ex: Arial, Verdana, Times New Roman, Tahoma) and even the newer Vista/Office 2007/VS2008 fonts (Calibri,Cambria, Candara, Corbel, etc) are significantly larger (~350K) than your average (US only?) TTF font (~50k) so these fonts contain most/all the major character sets that common languages (Spanish, French, German, etc) use. My question is, would somebody confirm that these fonts listed above are acceptable for international use of the major (let's say top 8) spoken languages? If so, then I'm guessing the only purpose of unicode fonts; such "Arial Unicode" (a massive 22mb) is only for dealing with extremely niche dialog, eastern glyphs (Chinese, Japanese) and dead languages? I'm just looking for some confirmation from developers that have their desktop apps/web apps rendering multiple languages and have a visual confirmation, I'm already in the 99% sure bin but you know what they say about assumption.

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  • Overriding the admin Media class

    - by shacker
    Given an admin media class that sets up a rich text editor, like: class TutorialAdmin(admin.ModelAdmin): fields... class Media: js = ['/paths/to/tinymce.js',] I would like the ability to selectively override js depending on a field value in the model it references. I've added a "use_editor" boolean to the Tutorial model. The question is, how can I detect whether the current instance has that bool set? I'd like to end up with something like: class Media: if self.use_editor: js = ['/path/to/tinymce.js',] else: js = '' Ideas? Thanks.

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  • Which set(s) of video lectures for computer science?

    - by SebKom
    As most of you know a couple of top universities (MIT, Stanford, etc) around the world are now publishing videos of their lectures online. I am advancing to the third and final year of my computer science degree this September and I was thinking about spending some time during the summer to watch a couple of lectures, in order to improve my understanding of algorithms, complexity, programming, software engineering, etc. Now I don't have infinite time to spend so I can't watch all of the lectures from all of the universities so I was wondering if you could suggest me which sets to watch from each one (something like "Algorithms from MIT", "Programming from Yale", etc).

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  • jQuery animation if load() returns something different...

    - by Dan LaManna
    setInterval(function() { var prevTopArticle = $("#toparticles table:first").html(); $("#toparticles").load("myurloffeed.com/topfeed", function() { alternateBG(); var newTopArticle = $("#toparticles table:first").html(); if (prevTopArticle!=newTopArticle) { $("#toparticles table:first").effect("highlight", {color:"#faffc4"}, 2000); } }); }, 8000); So it sets the current first table item to a variable, loads the toparticles div with the tables off the url, and if they are different it will perform the highlight effect, however it does the highlight effect anyway, completely unsure why it isn't working.

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  • Looking for framework for plotting scientific data: 2d/3d ...

    - by Ivan
    I need to visualize some scientific calculations. I generally prefer reusing code if there is already a good available instead of inventing wheels each time, that's why I am asking. I need a C# code to draw charts (just outputting a bitmap is ok) of 2d (y=f(x)) and 3d (z=f(x,y)) digital data sets (where any axis can be float, int or datetime), sometimes combined. If I go here and click 3D in the navigation bar on the left, there I can see what I need. But the cheapest version costs $759 there, looks scary for a hobby project of an east-european student :-(

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  • jQuery resetting value of form input when hidden

    - by RyanP13
    Hi, I am trying to clear the value attribute of an 'Other' form input when it is hidden from the user like so: // hide 'Other' inputs to start $('.jOther').hide(); // event listener on all select drop downs with class of jTitle $("select.jTitle").change(function(){ //set the select value var $titleVal = $(this).val(); if($titleVal != 'Other') { $(this).parent().find('.jOther').hide(); $(this).parent().find('input.jOther').attr("value", ""); } else { $(this).parent().find('.jOther').show(); } // Sets a cookie with named after the title field's ID attribute var $titleId = $(this).attr('id'); $.cookies.set('cpqb' + $titleId, $titleVal); }); It doesn't seem to be working and i have tried the following to no avail as well: $(this).parent().find('input.jOther').val(""); I have managed to alter other attributes in this way, such as the name, maxlength etc. Any ideas?

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  • Zend Framework: how to remove rendered views in the controller?

    - by takpar
    i want to render one of these sets of views: head body-$id1 foot OR head body-$id2 foot which set exsists. i do it like this: try { $this->render("head"); $this->render("body-$id1"); $this->render("foot"); } catch (Exception $e) { $this->render("head"); $this->render("body-$id2"); $this->render("foot"); } but it causes the head view be rendered twice if body-$id1 does not exists. do you have a better solution? in another saying, may i check the existance of body-$id1 before rendering it?

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  • How do I programmatically set property of control in aspx file ?

    - by Thomas Wanner
    This may be a very dumb question but I can't seem to get it working. I use at many places the following syntax for dynamically binding a property of a control in aspx file to the resource entry, e.g. <SomeFunnyControl Text="<%$ Resources : ResClass, ResEntry %>" /> I want to do a similar thing with a class containing some constants, something like <SomeFunnyControl Text="<%= MyConstantsClass.MyStringConstant %>" /> But this doesn't seem to work, it simply sets the text to the exact expression without evaluating it. I am using ASP.NET 3.5 btw. I have tried the databinding approach but I get an HttpParseException saying Databinding expressions are only supported on objects that have a DataBinding event.

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  • match 'article' in url RewriteRule

    - by daniel Crabbe
    hello there. building a site which has content for each section. urls range from; /work/ /work/print/ /work/print/folders etc. however, at any point a user can click on an article so; /work/article/1066 /work/print/article/1066 /work/print/folders/article/1066 using .htaccess i need to detect when there is 'article' in the url and set some different variables. RewriteRule ^([a-zA-Z0-9\-]+)/([a-zA-Z0-9\-]+)/([a-zA-Z0-9\-]+)/([a-zA-Z0-9\-]+)/$ sets index.php?level1=$1&level2=$2&level3=$3&level4=$4 but if 'article/([0-9-]+)' is in the url, say /work/print/article/1066 return index.php?level1=$1&level2=$2&articleID=1066 basically the amount of levels will always be different but i'd like to return those as needed. another example would /work/print/folder/archive/article/1066 return index.php?level1=$1&level2=$2&level3=$3&level4=$4&articleID=1066 any help appreciated! Dan

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  • Use matching value of a RegExp to name the output file.

    - by fx42
    I have this file "file.txt" which I want to split into many smaller ones. Each line of the file has an id field which looks like "id:1" for a line belonging to id 1. For each id in the file, I like to create a file named idid.txt and put all lines that belong to this id in that file. My brute force bash script solution reads as follows. count=1 while [ $count -lt 19945 ] do cat file.txt | grep "id:$count " >> ./sets/id$count.txt count='expr $count + 1' done Now this is very inefficient as I have do read through the file about 20.000 times. Is there a way to do the same operation with only one pass through the file? - What I'm probably asking for is a way to use the value that matches for a regular expression to name the associated output file.

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  • Ruby on Rails: building a model with an attribute not in the database?

    - by randombits
    I have a model that sets one of its attributes based off of a form parameter that a user submits. The model is a child resource to a parent resource Home. A hypothetical example is the following: A class Person has an age attribute. The user submits a birthdate as an HTTP POST parameter and from that, I need to derive the age of the user. So I'd do something like this: @home.people.build(:name => params[:name], :birthdate => params[:birthdate]) Rails would barf on that for obvious reasons, complaining it doesn't know what the attribute birthdate is. What's the proper way of going about this? Is it possible to use the build constructor with the supplied solution so that my foreign key relations are also setup properly? If not, what's a better way to work around this problem?

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  • User Crontab + Python + Random wallpapers = Not working?

    - by Andrew Bolster
    I have a python script that correctly sets the desktop wallpaper via gconf to a random picture in a given folder. I then have the following entry in my crontab * * * * * python /home/bolster/bin/change-background.py And syslog correctly reports execution Apr 26 14:11:01 bolster-desktop CRON[9751]: (bolster) CMD (python /home/bolster/bin/change-background.py) Apr 26 14:12:01 bolster-desktop CRON[9836]: (bolster) CMD (python /home/bolster/bin/change-background.py) Apr 26 14:13:01 bolster-desktop CRON[9860]: (bolster) CMD (python /home/bolster/bin/change-background.py) Apr 26 14:14:01 bolster-desktop CRON[9905]: (bolster) CMD (python /home/bolster/bin/change-background.py) Apr 26 14:15:01 bolster-desktop CRON[9948]: (bolster) CMD (python /home/bolster/bin/change-background.py) Apr 26 14:16:01 bolster-desktop CRON[9983]: (bolster) CMD (python /home/bolster/bin/change-background.py) But no desktopy changey, Any ideas?

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  • Why does jQuery do this in its constructor function implementation?

    - by mattcodes
    If we look at the latest jQuery source at http://code.jquery.com/jquery-latest.js we see the following: var jQuery = function( selector, context ) { // The jQuery object is actually just the init constructor 'enhanced' return new jQuery.fn.init( selector, context ); } My understanding of the new keyword in Javascript is essentially JavaScript passes the function an empty object {} and the function sets stuff on it via this.blah. Also from my understanding new differs from .call/.apply etc.. in that the return object also has the prototype set to that of the function. So the return value should have a prototype that the same as jQuery.prototype.init.prototype (or jQuery.fn.init.prototype). However from what I see its prototype is set to jQuery.prototype thus all the commands available to work on the set. Why is this? What am I missing in my understanding?

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  • What's the best way to match a query to a set of keywords?

    - by Ryan Detzel
    Pretty much what you would assume Google does. Advertisers come in and big on keywords, lets say "ipod", "ipod nano", "ipod 60GB", "used ipod", etc. Then we have a query, "I want to buy an ipod nano" or "best place to buy used ipods" what kind of algorithms and systems are used to match those queries to the keyword set. I would imagine that some of those keyword sets are huge, 100k keywords made up of one or more actual words. on top of that queries can be 1-n words as well. Any thoughts, links to wikipedia I can start reading? From what I know already I would use some stemmed hash in disk(CDB?) and a bloom filter to check to see if I should even go to disk.

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  • Access VBA: How to test if recordSet is empty? isNull?

    - by Shubham
    How can you test if a record set is empty? Dim temp_rst1 As Recordset Dim temp_rst2 As Recordset Set temp_rst1 = db.OpenRecordset("SELECT * FROM ORDER_DATA WHERE SKUS_ORDERED = '" & curSKU1 & "' AND [ORDER] = " & curOrder) Set temp_rst2 = db.OpenRecordset("SELECT * FROM ORDER_DATA WHERE SKUS_ORDERED = '" & curSKU2 & "' AND [ORDER] = " & curOrder) If IsNull(temp_rst1) Or IsNull(temp_rst2) Then MsgBox "null" I'm opening up a couple of record sets based on a select statement. If there are no records, will IsNull return true?

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  • One big call vs. multiple smaller TSQL calls

    - by BrokeMyLegBiking
    I have a ADO.NET/TSQL performance question. We have two options in our application: 1) One big database call with multiple result sets, then in code step through each result set and populate my objects. This results in one round trip to the database. 2) Multiple small database calls. There is much more code reuse with Option 2 which is an advantage of that option. But I would like to get some input on what the performance cost is. Are two small round trips twice as slow as one big round trip to the database, or is it just a small, say 10% performance loss? We are using C# 3.5 and Sql Server 2008 with stored procedures and ADO.NET.

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  • Can I show a single country (masked out) in GoogleMaps?

    - by NIclas Lindbegr
    Hello! Is it possible to mask away neighbor countries in GoogleMap? In my case I just want to show Sweden on one view. On a second view just Norway, Denmark etc etc... I know it is possible to draw polygon lines and fill them accordingly on to Maps API. Problem is that or the result sets get huge or the lines get very rough etc... Would be nice if GoogleMaps could deliver a country at the time without neighbors. Does anyone know about a good coordinate database with country borders? Best best regards, Niclas

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  • What is annotations and how do it actually works for frameworks like Spring ?

    - by Rachel
    I am new to Spring and now a days I hear a lot about Spring Framework. I have two sets of very specific questions: Set No. 1: What are annotations in general ? How does annotations works specifically with Spring framework ? Can annotations be used outside Spring Framework or are they Framework specific ? Set No. 2: What module of Spring Framework is widely used in Industry ? I think it is Spring MVC but why it is the most used module, if am correct or correct me on this ? I am newbie to Spring and so feel free to edit this questions to make more sense.

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