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  • R data frame select by global variable

    - by Matt
    I'm not sure how to do this without getting an error. Here is a simplified example of my problem. Say I have this data frame DF a b c d 1 2 3 4 2 3 4 5 3 4 5 6 Then I have a variable x <- min(c(1,2,3)) Now I want do do the following y <- DF[a == x] But when I try to refer to some variable like "x" I get an error because R is looking for a column "x" in my data frame. I get the "undefined columns selected" error How can I do what I am trying to do in R?

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  • How to select and hide all but first 5 elements in a HTML file (DOM)

    - by Zhen
    I am attempting to use coffeescript/jQuery to do the following: 1) Retrieve all the 'topics' displayed in the html (seen below) 2) Hide all the topics from display except for the first 5 listed. I tried to do the following but is not working //Retrieve the entire list of and hide all but the first 5 topics in the list $(".topics .topic")[5..-1].hide() Can someone advise me on how I can correctly retrieve the list of topics from the HTML document and subsequently hide ALL but the first 5 topics?

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  • select specify row using Jquery

    - by Yongwei Xing
    Hi all I have a HTML table like below: ColA ColB ColC ColD ColE ColF Checked AAAA BBBB CCCC DDDD EEEE Unchecked AAAA BBBB CCCC DDDD EEEE Checked AAAA BBBB CCCC DDDD EEEE Checked AAAA BBBB CCCC DDDD EEEE Unchecked AAAA BBBB CCCC DDDD EEEE Checked AAAA BBBB CCCC DDDD EEEE Checked AAAA BBBB CCCC DDDD EEEE ColA is a Check box. I want to get the ColD value of all rows whose ColA is Checked. I want to use the jquery to do it. Does anyone meet it before? Best Regards,

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  • Select a row having a column with max value - On a date range

    - by Abhi
    Excuse me for posting a similar question. Please consider this: date value 18/5/2010, 1 pm 40 18/5/2010, 2 pm 20 18/5/2010, 3 pm 60 18/5/2010, 4 pm 30 18/5/2010, 5 pm 60 18/5/2010, 6 pm 25 19/5/2010, 6 pm 300 19/5/2010, 6 pm 450 19/5/2010, 6 pm 375 20/5/2010, 6 pm 250 20/5/2010, 6 pm 310 The query is to get the date and value for each day such that the value obtained for that day is max. If the max value is repeated on that day, the lowest time stamp is selected. The result should be like: 18/5/2010, 3 pm 60 19/5/2010, 6 pm 450 20/5/2010, 6 pm 310 The query should take in a date range like the one given below and find results for that range in the above fashion: where date = to_date('26/03/2010','DD/MM/YYYY') AND date < to_date('27/03/2010','DD/MM/YYYY')

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  • On select show multiple divs?

    - by chaser7016
    Hi I am trying when a user chooses an airline from dropdown seen here that two additional drop downs appear for departing airport and arrival airport. I have coded it to work when one chooses American Airlines from drop down, but I need different departing and arrival airports to appear for the various a user may choose. Anyone know how that can be done? thanks

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  • Select distinct users with referrals

    - by Mark
    I have a bunch of Users. Since Django doesn't really let me extend the default User model, they each have Profiles. The Profiles have a referred_by field (a FK to User). I'm trying to get a list of Users with = 1 referral. Here's what I've got so far Profile.objects.filter(referred_by__isnull=False).values_list('referred_by', flat=True) Which gives me a list of IDs of the users who have referrals... but I need it to be distinct, and I want the User object, not their ID. Or better yet, it would be nice if it could return the number of referrals a user has. Any ideas?

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  • Generic version control strategy for select table data within a heavily normalized database

    - by leppie
    Hi Sorry for the long winded title, but the requirement/problem is rather specific. With reference to the following sample (but very simplified) structure (in psuedo SQL), I hope to explain it a bit better. TABLE StructureName { Id GUID PK, Name varchar(50) NOT NULL } TABLE Structure { Id GUID PK, ParentId GUID (FK to Structure), NameId GUID (FK to StructureName) NOT NULL } TABLE Something { Id GUID PK, RootStructureId GUID (FK to Structure) NOT NULL } As one can see, Structure is a simple tree structure (not worried about ordering of children for the problem). StructureName is a simplification of a translation system. Finally 'Something' is simply something referencing the tree's root structure. This is just one of many tables that need to be versioned, but this one serves as a good example for most cases. There is a requirement to version to any changes to the name and/or the tree 'layout' of the Structure table. Previous versions should always be available. There seems to be a few possibilities to tackle this issue, like copying the entire structure, but most approaches causes one to 'loose' referential integrity. Example if one followed this approach, one would have to make a duplicate of the 'Something' record, given that the root structure will be a new record, and have a new ID. Other avenues of possible solutions are looking into how Wiki's handle this or go a lot further and look how proper version control systems work. Currently, I feel a bit clueless how to proceed on this in a generic way. Any ideas will be greatly appreciated. Thanks leppie

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  • Sql select rows containing part of string.

    - by Maxim
    Hello! I want to write a comparation procedure (t-sql) for site seo. I have a table with field 'url' (nvarchar()) that contain a part of site url's. Ex: 'mysyte.com/?id=2'. Also this table for each url contains metadata, that i need to extract. The main problem is that full url on site looks like 'mysyte.com/?id=2&region=0&page=1', and i just need to ignore everething, except url in table: I mean: 'mysyte.com/?id=2' = is a part of 'mysyte.com/?id=2&region=0&page=1'

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  • Jquery Select Problem

    - by oraclee
    Hi; Jquery Code: $("[id$=mytable] tr").click(function() { alert($(this).html()); }); Html: <table id="mytable"> <tr> <td class="locked">1</td> <td>2</td> <td>3</td> </tr> <tr> <td class="locked">a</td> <td>b</td> <td>c</td> </tr> </table> i need only "td class='locked'" click return this click: <td class="locked">1</td> output: <tr> <td class="locked">1</td> <td>2</td> <td>3</td> </tr>

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  • select all values from a dimension for which there are facts in all other dimensions

    - by ideasculptor
    I've tried to simplify for the purposes of asking this question. Hopefully, this will be comprehensible. Basically, I have a fact table with a time dimension, another dimension, and a hierarchical dimension. For the purposes of the question, let's assume the hierarchical dimension is zip code and state. The other dimension is just descriptive. Let's call it 'customer' Let's assume there are 50 customers. I need to find the set of states for which there is at least one zip code in which EVERY customer has at least one fact row for each day in the time dimension. If a zip code has only 49 customers, I don't care about it. If even one of the 50 customers doesn't have a value for even 1 day in a zip code, I don't care about it. Finally, I also need to know which zip codes qualified the state for selection. Note, there is no requirement that every zip code have a full data set - only that at least one zip code does. I don't mind making multiple queries and doing some processing on the client side. This is a dataset that only needs to be generated once per day and can be cached. I don't even see a particularly clean way to do it with multiple queries short of simply brute-force iteration, and there are a heck of a lot of 'zip codes' in the data set (not actually zip codes, but the there are approximately 100,000 entries in the lower level of the hierarchy and several hundred in the top level, so zipcode-state is a reasonable analogy)

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  • HTML tag to select Flash-player plugin to play flv

    - by Microkernel
    Hi all, If I have .flv files on my server at some location like http://www.example.com/archive/test.flv. In HTML page how can I tell the browser to use Flash player to play this video like youtube videos are played. Can someone tell me how to do this? Regards, Microkernel PS: I am noober than noob in web dev, so please give some code snippet or answers that beginners like me can understand. Thank you

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  • select attribute mysql

    - by Viet Tran
    I have there mysql table: **product (id,name)** 1 Samsung 2 Toshiba 3 Sony **attribute (id,name,parentid)** 1 Size 0 2 19" 1 3 17" 1 4 15" 1 5 Color 0 6 White 1 7 Black 2 **attribute2product (id,productid,attributeid)** 1 1 2 2 1 6 3 2 2 4 2 7 5 3 3 6 3 7 And listed them like: Size -- 19" (2 product(s)) -- 17" (1 product) -- 15" (0 product) Color -- White (1 product) -- Black (2 product(s)) Please help me to filter product, eg: when I choose the Size 19" (that product id 1 and 2 have), this will display: Size -- 19" Color -- White (1 product) -- Black (1 product) Thanks,

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  • how to select database content foreach month ?

    - by mehdi
    i have table named visits in my database like this : id ip action_date|time_stamp i use this code to store site visits /* Hits table has an auto-incrementing id and an ip field */ // Grab client IP $ip = $this->input->ip_address(); // Check for previous visits $query = $this->db->get_where('visits', array('ip' => $ip), 1, 0); $query = $query->row_array(); if (count($query) < 1 ) { // Never visited - add $this->db->insert('visits', array('ip' => $ip) ); } it's working nice . but my client need to know how many visits they have in month . how can i do that ? tanks .

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  • Jquery First Column Select Problem

    - by oraclee
    Hi all; Jquery Code: $("[id$=gridvv] tr").filter(function() { return $('td', this).length && !$('table', this).length }).click(function() { Alert('test'); }); i need "td = .locked" click <table> <tr> <td class="locked">Blabla<td> <td>test1</td> <td>test2</td> </tr> </table>

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  • How to select elements from a set that are children of another element

    - by Tatu Ulmanen
    Hi, The title is a bit confusing but here's what I'm after: I have a set of elements containing all the h3 elements in a page. In jQuery terms: var mySet = $('h3'). I also have an div element var myContainer = $('div#foo') I need to find all items in the set mySet that are children of myContainer. Any ideas? I bet there's some magical one liner for this but I cannot think of any. I'd rather not loop through every element in the set manually and use .closest(myContainer) or something like that to determine the relationship. Note that in my scenario, I cannot use a new selector like $('div#foo h3') (that would be too easy) as I don't have access to the actual selector values. So it has to be dynamic.

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  • How to select the most recent set of dated records from a mysql table

    - by Ken
    I am storing the response to various rpc calls in a mysql table with the following fields: Table: rpc_responses timestamp (date) method (varchar) id (varchar) response (mediumtext) PRIMARY KEY(timestamp,method,id) What is the best method of selecting the most recent responses for all existing combinations of method and id? For each date there can only be one response for a given method/id. Not all call combinations are necessarily present for a given date. There are dozens of methods, thousands of ids and at least 356 different dates Sample data: timestamp method id response 2009-01-10 getThud 16 "....." 2009-01-10 getFoo 12 "....." 2009-01-10 getBar 12 "....." 2009-01-11 getFoo 12 "....." 2009-01-11 getBar 16 "....." Desired result: 2009-01-10 getThud 16 "....." 2009-01-10 getBar 12 "....." 2009-01-11 getFoo 12 "....." 2009-01-11 getBar 16 "....." (I don't think this is the same question - it won't give me the most recent response)

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  • Javascript terminates after trying to select data from an object passed to a function

    - by Silmaril89
    Here is my javascript: $(document).ready(function(){ var queries = getUrlVars(); $.get("mail3.php", { listid: queries["listid"], mindex: queries["mindex"] }, showData, 'html'); }); function showData(data) { var response = $(data).find("#mailing").html(); if (response == null) { $("#results").html("<h3>Server didn't respond, try again.</h3>"); } else if (response.length) { var old = $("#results").html(); old = old + "<br /><h3>" + response + "</h3>"; $("#results").html(old); var words = response.split(' '); words[2] = words[2] * 1; words[4] = words[4] * 1; if (words[2] < words[4]) { var queries = getUrlVars(); $.get("mail3.php", { listid: queries["listid"], mindex: words[2] }, function(data){showData(data);}, 'html'); } else { var done = $(data).find("#done").html(); old = old + "<br />" + done; $("#results").html(old); } } else { $("#results").html("<h3>Server responded with an empty reply, try again.</h3>"); } } function getUrlVars() { var vars = [], hash; var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&'); for (var i = 0; i < hashes.length; i++) { hash = hashes[i].split('='); vars.push(hash[0]); vars[hash[0]] = hash[1]; } return vars; } After the first line in showData: var response = $(data).find("#mailing").html(); the javascript stops. If I put an alert before it, the alert pops up, after it, it doesn't pop up. There must be something wrong with using $(data), but why? Any ideas would be appreciated.

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  • How to implement "select sum()" in Grails

    - by xain
    I have a relationship like this: class E { string name hasMany = [me:ME] } class M { float price } class ME { E e M m int quantity } And I'd hate to iterate to achieve this: "obtain the sum of the quantity in ME times the price of the corresponding M for a given E". Any hints on how to implement it using GORM/HQL ? Thanks in advance

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  • How to select ancestor based on ancestor's attribute

    - by kman
    I am new to this, so please bear with me... I need to very simply modify content based on a template match: topic/body/section/title This template match works fine. However, I need this to only happen if the topic element has a title element with the value of "Preface". Can someone please help with the code? Here is the code: <topic> <title>Preface</title> <body> <p>This publication was written for...</p> <section> <title>Publication Information/Version</title> I need to be able to modify section/title only when the text of topci/title = "Preface". make sense?

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  • Select distinct values from multiple columns

    - by nuhusky2003
    I had a table (Some_Table) with two columns: A B ------------------- 1 test 2 test 3 test1 4 test1 i would like to return DISTINCT values for column B and it's associated value in column A (first in distinct set), so something like this: A B ----------- 1 test 3 test1 What is the sql?

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