I'm searching for a way to create complex/simple graph using Perl.
The known modules/applications I've checked are: GraphViz, Graph-Easy, aiSee etc.
Each way I walked, new problems appeared.
If my need is to create graph dependencies that
can be edited live
have a directed compass mode
work fine and are readable with massive data use
can be used through the terminal to convert from input format (GDL etc.) to output format (PNG, BMP, HTML etc.) –
what are the various applications that can handle all of these requests?
This question is a follow-up of How can I convert connection data lines to block of schemes using Perl?.
Thanks,
YoDar.
It might be an overkill for your application, but you might also want to look into PerlMagik.
Related
I've been playing around with making a draftjs plugin that lets the user paste in mixed text&image content from websites and have images auto-uploaded to the server. I've quickly come to the realization that it's not easy, simply because of how many different sites use different kinds of counter-measures for copy/pasting images. Standard image tags in page content are no problem - easily grab the src and handle the file upload from the url. However, many sites use all kinds of trickery to make this a pain. For example, some will only serve small thumbnails, requiring a GET request on the image with a hash key in order to retrieve a larger version. Others somehow seem to corrupt the image so that it's unreadable by the time it's been retrieved. Others still play with weird embed tags to mess with draftjs' image blocks.
But then I open up a Google Docs file, and find that when I copy any images into that from a website, there's never any troubles whatsoever. All the problematic websites that I'm finding myself having to write specific methods for retrieving from seem to be handled by Google Docs with ease.
Am I using completely the wrong approach by trying to retrieve images from a url? Does Google use a far superior approach (yes, I presume) - in which case, does anyone have any idea what that approach might be?
Is there a way to mass convert an image? We're experimenting with replacing imagemagick and taking the load off of our servers -- I've got a version working that just loops through the sizes and calls convert on the original image, making 23 copies of differing styles (sizes and crops). However, if the user leaves the page before all the conversions are done, the script stops and I end up missing a bunch of image styles.
Is there a good way to get around this with Filepicker.io? I'd really like to be able to just pass a list of options to the convert method and have it complete in the background.
Thanks in advance,
- Jeff
The best way to do this is either using the /convert endpoint to do on-the-fly conversion (https://developers.filepicker.io/docs/web/#fpurl-images) or to do a POST to our rest endpoint to create the converted images and store them in S3 via a server-side call
I have a Word document(some template format) where it containing some placeholders for the data to be filled in and there are several Word documents like this which lies in some directory. When data comes I will be choosing different templates (based on some criteria) and fill the data and the documents have to be converted to PDF format.
I have been investigating Apache POI for this. If anyone has a good suggestion, it would be much appreciated.
As mbeckish mentioned you should indicate how you are going to run/automate this. For example is it one-off, run by hand or part of another program (and if so what programming languages do you use)?
If you are trying to automate it JODReports and Docmosis are tools that can use templates like you require and can produce PDF. JODReports is free. Docmosis is not but has several APIs. Please note I work for the company that develops Docmosis.
Hope that helps.
I've just uploaded this presentation, which presents three approaches for doing this.
Why not use any of existing PDF virtual printers?
any recommendations for saving four strings into an own file format that is read by the application and can be shared?
In my app, you will be able to enter some text in some boxes and the app shows a view with an background image and those strings. Now, I am already able to save this as a picture, but I actually want to save it to an own file format so that you can save different files that can be modified afterwards as well or even exchanged via email and opened from another iphone with the app.
Now, I wrote the code for accessing the documents folder of the app, as well as saving and deleting. Thing is, i dont know how to store those strings in a file (perhaps in a xml?) and read them easily afterwards from my application.
For the exchanging part, I found that link which would be a nice feature indeed: http://iosdevelopertips.com/cocoa/launching-your-own-application-via-a-custom-url-scheme.html
Parsing xml seems not that difficult (never done it before): http://ipad.about.com/od/iPad-App-Dev/a/How-To-Parse-Xml-Files-In-Xcode-Objective-C.htm
If it's only a small bit of infomation then the easiest way to store your data in a file would be using a plist - there's a good tutorial here - http://www.icodeblog.com/2009/02/14/loading-data-from-plist-files/
In addition to the plist, you could also do the following approaches:
1) simplest - open a file in your documents directory, write the 4 strings (using whatever delimiter/end of string marker is useful - carriage return?) and overwrite them each time through. (i.e. it's your file, you can format it how you like)
2) mildly harder - use Apple's NSArchive to pack and unpack the strings.
3) possible overkill - store them directly in a SQLite database
4) major overkill - store them in CoreData.
Of course, the "overkill" options also provide you with extra features which may be of use if your app functionality extends beyond what you've outlined.
By sharing, I would think that simple copy and paste might be enough, but there's also sending it via email, or tripping another app's URL scheme to make it open it and sending the strings as part of the URL. You'd have to know that the other app would be able to interpret your strings as part of the URL, so you might have to write it yourself.
Okay guys I found that very nice method in the NSString documentation:
–writeToFile:atomically:encoding:error:
I think I am gonna separate my strings by /n and save them to a .txt. When I am gonna read the file afterwards, i am getting the string, divide it to substrings. That will do it, I guess.
One last question: Is it possible to replace the content of my file so that I won't need to create a new file every time i want to change something?
Thanks!
I am using the SIMPLE RSS reading example found at http://theappleblog.com/2008/08/04/tutorial-build-a-simple-rss-reader-for-iphone/
It uses parseXML to load the RSS feeds.
Here is the problem I am having. For the following RSS feed example, I am having trouble getting it to load the feed. Comes up with an error that it cannot connect. However on my Mac RSS Reader it works fine, so I know the link is good.
Any ideas on why it cannot load this particular feed but it can load others fine?
http://www.okstate.com/rss.dbml?db_oem_id=200&media=news
Thanks.
I've just released an open source RSS/Atom Parser for iPhone and hopefully it might be of some use.
I'd love to hear your thoughts on it too!
In my experience, HTML markup causes an RSS parser to fail in most cases. I've experienced a problem like this with a lot of parser classes I've come across (in search of the ultimate one, which I didn't find)
My guess is that entities such as
's
are responsible for your crash. That was usually the case with my crashes. This also lead to my decision to create a 'proxy server' to pre-parse the XML before sending it to the iPhone (which gives me the advantage of caching, scaling, and some other stuff). I do believe there are solid solutions out there, but is always difficult writing a parser for so many RSS implementations.
P.S: W3C validates this feed as 'valid', so it really is 'our' problem..
Your problem could lie with:
Unicode characters (i.e. I see some o's with two dots above them in the feed)
The code you have doesn't respect CDATA sections correctly
To find out which is the case, save the feed file to your local disk and load it via your code to make sure the error happens.
Do a binary search on the file to find out if a particular RSS entry is causing the problem (i.e. remove all but the first rss entry and see if the problem exists. If it does, then the problem is there, if it doesn't put half the rss entries back in the file and repeat)
I've been experiencing a similar issue. I haven't yet pinned down the answer, but I've noticed that RSS 2 tends to parse more successfully than the rest.
There are many RSS feeds that contain invalid XML, usually because they were hacked together on the server side using HTML templates by somebody who didn't understand XML. I've seen improperly escaped (or non-escaped) HTML post contents, missing close tags, badly nested tags, and so on.
If you want to be able to parse arbitrary feeds, you have to clean up bad XML. The usual way is to use the "htmlTidy" library, which is included in the OS. This can clean up XML as well as HTML.
This example you're following uses NSXMLParser -- I have no idea why. It's a lower-level API and it doesn't support tidying. I would suggest using NSXMLDocument instead. There's a flag in that API that will tell it to use tidy when parsing the XML. This API also returns you the XML as a handy tree of elements that's easy to work with.