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  • Looking for trustworthy JPEG batch converter/resizer

    - by Simon_Weaver
    I have a batch of PNG files that I need to convert to JPEG. I'm looking for a free trustworthy utility that will give me the most optimal possible JPEGs. I've found some paid utilities and i HAVE Photoshop, but I want something dedicated that is made for the task and I dont want to accidentally download spy ware. I'm really surprised not to find this question already on StackOverflow, but please point me in the direction of any similar questions if they exist.

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  • NodeJS + Express: res.redirect('back'); with params

    - by Ilya Rusanen
    I have register form on every page of my website. During registration some error may occur. After cathing error, I have to return user to previous page, showing some error tips. The problem is I dont know from which page user performs registration. That's why I use res.redirect('back');. However, I cant just redirect user back, I have to show him whats wrong. Thats why I have to pass some parameter. But res.redirect('back', (reg_error:'username')}) can not be used directly 'cause res.redirect() doesn't support parameters. How can I render prevous page with some parameter? Thanks!

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  • how to get a part of a video

    - by George2
    Hello everyone, I am using VSTS 2008 + C# + .Net 3.5 on Windows 7. I want to use Expression Encoder 3 to get a part of a video (original video in wmv format), in more details, in more details, I want to get the beginning 30 seconds of video (and save the 30-second video into another wmv file), and want to get the last 30 seconds of video (and save the 30-second video into another wmv file). Any reference code? I did not find MSDN provides too much reference sample code. thanks in advance, George

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  • Json object merge with unqiue id

    - by Hitu
    I have multiple json Objects json1 = [ {'category_id':1,'name':'test1' }, {'category_id':1,'name':'test2' }, {'category_id':1,'name':'test3' }, {'category_id':2,'name':'test2' }, {'category_id':3,'name':'test1' } ]; json2 = [{'category_id':1,'type':'test1'}]; json3 = [ {'category_id':1,'color':'black'}, {'category_id':2,'color':'black'}, {'category_id':3,'color':'white'} ]; I am expecting output like this final = [ {'category_id':1,'name':'test1','type':'test`','color':'black' }, {'category_id':1,'name':'test2','type':'test`','color':'black' }, {'category_id':1,'name':'test3','type':'test`','color':'black' }, {'category_id':2,'name':'test2','color':'black' }, {'category_id':3,'name':'test1','color':'white' } ]; As i have long json object. Looping is good idea or not ? Does there is any inbuilt function for doing the same.

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  • Nodejs: Change working directory when running node bin script

    - by user2433617
    I am trying to change the working directory when my nodejs script is run from a bin script. So simplified I have something like: #!/usr/bin/env node process.cd('/Users') When I then run this command like ./bin/nodefile it exits but stays in the same directory it started in. I have also tried shelljs, What is the best way to do this? I understand it's working but it's just in a separate process. Thanks.

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  • Upload an image from JSON with rails

    - by Dougui
    I have an application created with PhoneGap and Backbone. I upload a file as JSon and my server receive data like this : data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/... I'm trying to write the file like this : File.open("#{Rails.root}/public/images/#{self.id}.jpg", "w+") do |f| f.write(data) end It's not working and I don't know what to do. When I'm trying to open the file I have this message "Not a JPEG file: starts with 0x64 0x61". Do you have a solution?

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  • How to reference {{outlet}} in Ember.CollectionView's itemView

    - by ceed
    I am new to ember and ran into a problem and could not find an answer online. I have a collectionView App.MyView = Ember.CollectionView.extend({ itemViewClass: 'App.MyViewItem', contentBinding: 'controller' }); and the itemViewClass App.MyViewItem = Ember.View.extend({ templateName: 'mytemplate' }); the template looks like that: <div {{action 'select' view.content}}>{{view.content.name}}</div> {{outlet detail}} </div> This produces the content list just fine. In the controller, I have an action: select: function(evt){ this.transitionToRoute('item', evt); } What I want to do is to transition to a nested route when selecting the item (which works fine) and also load more data of the selected item into {{outlet detail}}. While I can load the content of the "item" route into an outlet of e.g. application.hbs, I don't know how to reference the outlet of the selected collectionView item so that the detailed contents are displayed within the existing view. I tried to use: this.render('item', { outlet: 'detail', into: '????' }); within the item Route, but I don't know how to reference the collectionview item template. Maybe there's also a much easier way of loading more data from an item in the item's view (while changing the route at the same time). Any help would be appreciated.

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  • Specify a OneWay Binding in HandleBars - Ember

    - by Miguel Madero
    Is there a way to Specify a OneWay Binding in HandleBars? bind-attr always calls Ember.bind, which always create a two way binding. This seems to be the case for elements that don't even change: <img {{bind-attr class=":class-name-to-always-apply"}}> But even in cases where the element could change, we might have reasons to update it manually (e.g. performance or we don't want to change it on textChanged, but do it manually)

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  • NSInvalidArgumentException – App terminates while i'm trying to copy a captured video to documents f

    - by ChrNis
    I'd like to try the wisdom of the crowds..because i'm frustrated right now. Thanks in advance. So here is my code: - (void)imagePickerController:(UIImagePickerController *)ipc didFinishPickingMediaWithInfo:(NSDictionary *)info{ NSLog(@"info: %@",info); NSString *newFilename = [NSString stringWithFormat:@"%@/%@.mov", [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"], [NSString stringWithFormat:@"%d", (long)[[NSDate date] timeIntervalSince1970]]]; NSLog(@"newFilename: %@",newFilename); NSFileManager *filemgr = [NSFileManager defaultManager]; NSError *err; if ([filemgr copyItemAtPath:[info objectForKey:@"UIImagePickerControllerMediaURL"] toPath:newFilename error:&err] == YES) NSLog (@"Move successful"); else NSLog (@"Move failed"); and this is the log: 2010-05-16 18:19:01.975 erlkoenig[7099:307] info: { UIImagePickerControllerMediaType = "public.movie"; UIImagePickerControllerMediaURL = "file://localhost/private/var/mobile/Applications/BE25F9B5-2D08-4B59-8B62-D04DF7BB7E5B/tmp/-Tmp-/capture-T0x108cb0.tmp.8M81HU/capturedvideo.MOV"; } newFilename: /var/mobile/Applications/BE25F9B5-2D08-4B59-8B62-D04DF7BB7E5B/Documents/1274026741.mov [NSURL fileSystemRepresentation]: unrecognized selector sent to instance 0x1c1f90 *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSURL fileSystemRepresentation]: unrecognized selector sent to instance 0x1c1f90

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  • With custom binding for Masonry how would I resize the container appropriately

    - by BigDubb
    Based on the suggestion give here, and the information given here on how to make a custom bindingHandler for a forEach, I decided to attempt to write my own custom binding for a forEach and Masonry. Because the elements are added on the fly the redrawing and moving around of elements to fill the space doesn't occur. So, this functionality needed to be moved after the elements have been rendered or called after each item has been added. Here is my bindingHandler ko.bindingHandlers.masonry = { init: function (element, valueAccessor, allBindingsAccessor) { var $element = $(element), originalContent = $element.html(); $element.data("original-content", originalContent); //var msnry = new Masonry($element); return { controlsDescendantBindings: true } }, update: function (element, valueAccessor, allBindingsAccessor) { var value = ko.utils.unwrapObservable(valueAccessor()), //get the list of items items = value.items(), //get a jQuery reference to the element $element = $(element), //get the current content of the element elementContent = $element.data("original-content"); $element.html(""); var container = $element[0]; var msnry = new Masonry(container); for (var index = 0; index < items.length; index++) { (function () { //get the list of items var item = ko.utils.unwrapObservable(items[index]), $childElement = $(elementContent); ko.applyBindings(item, $childElement[0]); //add the child to the parent $element.append($childElement); msnry.appended($childElement[0]); })(); msnry.layout(); msnry.bindResize(); } } }; and the HTML implementing the handler. <div id="criteriaContainer" data-bind="masonry: { items: SearchItems.Items }"> <div class="searchCriterion control-group"> <label class="control-label" data-bind="text: Description"></label> <div class="controls"> <input type="hidden" data-bind="value: Value, select2: { minimumInputLength: 3, queryUri: SearchUri(), placeholder: Placeholder(), allowClear: true }" style="width: 450px"> </div> <p data-bind="text: Value"></p> </div> </div> When this shows up on the page It stacks all if the elements rendered via the append method right on top of each other. You can see in my bindingHandler I am calling bindResize as well as layout(), neither of which seem to be having any effect. Here's a screenshot of what it looks like in the UI.

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  • MATLAB: How do I get 3D coordiantes from a user-click?

    - by Tim
    I'm using Matlab to create a small chess game for one of my courses this semester. The thing I'm having trouble with is having the user be able to select one of the chess pieces. To simplify things, I'm making it so that the user selects a piece by clicking on the square that the chess piece resides on rather than clicking the piece itself (which I assume would be much more difficult). I know how to get the x and y coordinates of the view-port, but how do I transform these coordinates into 3-space coordinates? I know that there are multiple x,y,z coordinates associated with each view-port coordinate, but I'm only interested in the x,y,z coordinate where z = 0 (since the board itself is in the x,y plane that intersects the z axis where z = 0). Thanks!

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  • How to detect invalid route and trigger function in Backbone.Controller

    - by tomodian
    Is there any method to detect invalid (or undefined) route and trigger 404 page in Backbone.Controller? I've defined routes in my Controller like this, but it didn't work. class MyController extends Backbone.Controller routes: "method_a": "methodA" "method_b": "methodB" "*undefined": "show404Error" # when access to /#method_a methodA: -> console.log "this page exists" # when access to /#method_b methodB: -> console.log "this also exists" # when access to /#some_invalid_hash_fragment_for_malicious_attack show404Error: -> console.log "sorry, this page does not exist"

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  • Expressjs route param as variable in main app

    - by MoDFoX
    For my app I have two route set up, app.get('/', routes.index); app.get('/:name', routes.index); I would like it to be so that if I don't specify a param, say just go to appurl.com (localhost:3000), it would load a default user, but if I do specify a param(localhost:3000/user), use that as the variable "username" in the following function (placed after my routes). (function getUser(){ var body = '', username = 'WillsonSM', options = { host: 'ws.audioscrobbler.com', port: 80, path: '/2.0/?method=user.gettopartists&user=' + username + '&format=json&limit=20&api_key=APIKEYGOESHERE' }; require('http').request(options, function(res) { res.setEncoding('utf8'); res.on('data', function(chunk) { body += chunk; }); res.on('end', function() { body = JSON.parse(body); artists = body.topartists.artist; }); }).end(); })(); Along with this I have my route set up like so: exports.index = function(req, res){ res.render('index', { title: 'LasTube' }); username = req.params.name; console.log(username); }; unfortunately setting username there to req.params.name does not seem to be accessible from the main app function. My question is: How can I set expressjs/nodejs to use the parameter set via /name when available, and just use a default - in this example "WillsonSM" if not available. I've tried taking "username" out of the main app, and just leaving it in the function, but username becomes undefined, as it is inaccessible from the route, and the app will not run. I can spit out "username" via the routes console.log, so assigning it there is not an issue, but as I am new to expressjs, I am unaware of how I should go about doing this. I have tried all I can think of and find from looking around the internet. Also, if there is a better way of doing this, or I am doing something wrong, please let me know. If I've left out any information, just throw in a comment and I'll try to address it.

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  • Add inputs to more than one row in a structure array in matlab

    - by ZaZu
    Hi there, I would like to know how can I get certain inputs and put them in more than one row in the structure ... I basically want a structure that updates one input per row in ever loop. The loop is looped 30 times, so I want to have 30 rows and 2 columns ( x and y columns) I have this code : For N=1:30 . . . Binary = bwlabel(blacknwhite); s = regionprops(Binary,'centroid'); centroids = cat(1, s.Centroid); hold(imgca,'on') plot(imgca,centroids(1,1), centroids(1,2),'r*') . . . end I dont think this does what I want ... only the first row is updated in my loop .. So how can I create this structure ? If you want more info please tell me and I will update it right away. Thanks !

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  • Filter design for audio signal.

    - by beanyblue
    What I am trying to do is simple. I have a few .wav files. I want to remove noise and filter out specific frequencies. I don't have matlab and I intend to write my own code for all the filters. Right now, I have a way to read the .wav file and dump out the structure into a text file. My questions are the following: Can I directly apply the digital filters on this sampled data?{ ie, can I directly do a convolution between my input samples and h(n) for the filter function that i choose?). How do I choose the number of coefficients for the Window function? I have octave, so if someone can point me to anything that gives me some idea on how to process the .wav file using octave, that would be great too. I want to be able to filter out the frequency and then listen to the sound again. Is this possible with octave? I'm just a beginner with these kinds of things, so please bear with me if my questions are too naive. Any help will be great.

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  • send name="" in jquery javascript?

    - by Azzyh
    Hello So i have this: yes: <input type="radio" value="Y" id="SCvoteY" name="vote"></input> no: <input type="radio" id="SCvoteN" value="N" name="vote"> </input> How do i write that it should transfer name="vote" data ? #vote doesnt work, .vote either (guess it cause thats for class and ID) but what about name then? function DoSCInsert(){ $("#SCres").html("please wait.."); var nocache = '0'; var data = { fID : $("#fID").val(), vote : $("#vote").val(), comment: $("#comment").val(), nocache: nocache }; $.get('insertSC.php', data, onSCInsertComplete); } And how do i shorten this, ive heard that you can you a function in jquery called serialize to pass strings but can you(if you know how) show example by this script how to pass it like this one does?

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  • How can I extract a range of lines from a text file on unix?

    - by Adam J. Forster
    I have a ~23000 line sql dump containing several databases worth of data. I need to extract a certain section of this file (i.e. the data for a single database) and place it in a new file. I know both the start and end line numbers of the data that I want. Does anyone know a unix command (or series of commands) to extract all lines from a file between say line 16224 and 16482 and then redirect them into a new file?

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  • generating thumbnail image for video

    - by George2
    Hello everyone, I am using VSTS 2008 + C# + .Net 3.5 on Windows 7. I want to use Expression Encoder 3 to generate thumbnail image for video (wmv format) every 30 seconds -- e.g. for a 5 minutes video, there will be 10 thumbnails which reflects video at the time of 0 second, 30 second, 1 minute, 1 minute and 30 seconds, etc. Any reference code? thanks in advance, George

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  • How to integrate camera image into physics engine?

    - by Pedro
    I recently came across this and would like to implement something similar. The basic approach is clear: I have to threshold the image and check if a virtual object collides with the remaining foreground. Instead of implementing the physics myself, I'd like use an engine like Box2D. But how do I integrate the thresholded image into the physics engine so it is possible to interact with virtual objects?

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  • Why closed contours are guaranteed here?

    - by user198729
    Quoted from here: BW = edge(I,'zerocross',thresh,h) specifies the zero-cross method, using the filter h. thresh is the sensitivity threshold; if the argument is empty ([]), edge chooses the sensitivity threshold automatically. If you specify a threshold of 0, the output image has closed contours, because it includes all the zero crossings in the input image. I don't understand it,can someone elaborate?

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